MXPA01000911A - Transmission method, transmission device, and transmission system - Google Patents

Abstract

Good transmission of audio data in various formats is realized. When data in units of a predetermined data length is transmitted in a predetermined format between devices connected through a predetermined transmission channel, label data representing the type of the transmitted audio data is placed at the beginning of the data of a predetermined data length, sub-label data is placed after the label data if required, and data accompanying the audio data is placed. Therefore the audio data type can be easily identified by the data receiving device.

Description

"TRANSMISSION METHOD, TRANSMISSION APPARATUS AND TRANSMISSION SYSTEM" TECHNICAL FIELD The present invention relates to an apparatus for transmission and a transmission method to be used to transmit audio data from various systems to a 1394 IEEE system busbar (The Institute of Electrical and Electronics Engineers), for example, and a transmission system to which this transmission system is applied.

ANTECEDENTS OF THE TECHNIQUE A transmission method and an apparatus for transmission wherein a plurality of AV devices are connected via a network using a bus line of the IEEE 1394 system, and practical data and audio data that are transmitted between the aforementioned devices. In the case of the bus line of the IEEE 1394 system, an isochronous transfer channel is available to transmit the data of a large capacity such as a video data and an audio data and a channel of - - Asynchronous transfer to transmit data such as control commands so that this data can be transmitted in the mixed state. The details of a format for transmitting the audio data (music data) by the bus line of the IEEE 1394 system is disclosed in the [Audio and Music Data Transmission Protocol]. This [Audio and Music Data Transmission Protocol] was opened in the TRADE ASSOCIATION 1394 (COMMERCIAL ASSOCIATION). The conventional audio data prescribed in such a way that it must be transmitted in accordance with the aforementioned format is only the general digital audio data where a sampling frequency is a coasting frequency such as a constant frequency of 44.1 kHz and a 16-bit or 24-bit sample. On the other hand, a variety of new digital audio data formats have been proposed that are capable of greatly improving the tone quality of the reproduced sounds. Several types of multichannel audio data formats capable of reproducing the audio data of the multichannel through two channels have been proposed. Therefore, there is a large number of digital audio data formats. The bar line of the IEEE 1394 system mentioned above, however, can not take into account the transmission of audio data of this new format. Therefore, it is difficult to transmit these | audio data in accordance with the present format. When an audio data is transmitted, there is a demand that not only the audio data itself but also the data accompanied with the copy control information or the like should be transmitted. The transmission of this concomitant data is not taken into consideration depending on a format of the data of audio transmitted. Therefore, certain countermeasures must be taken.

COMPENDIUM OF THE INVENTION An object of the present invention is to provide a transmission method, an apparatus for transmission and a transmission system in which the audio data of various formats can be transmitted successfully by a transmission line such as a bus bar line. According to the first invention, in a transmission method of transmitting the data having a predetermined data length as a unit between the devices to transmit the data through a line of predetermined transmission by a predetermined format, the data of the label indicating a data system of the transmitted audio stream is É ^ k locates in a starting portion of the data that has a predetermined data length as a unit, the data of The audio stream of the system indicated by the tag data is located at an interval behind the data of the tag and the data is transmitted. With the aforementioned provision, an audio data system can be judged by the data of the tag located in the The starting portion of each data and therefore the audio data of various systems can be successfully transmitted by an appropriate means such as a bus line. According to the second invention, in the According to the method of transmission of the first invention, the data concomitant with the data of the audio stream of the system indicated by the data of the label is located at a time after the data of the label and the data of the audio stream of a system indicated by the data of the label that is located in a remaining interval. With the aforementioned arrangement, the data concomitant with the audio data can also be transmitted simultaneously, and therefore, a receiving side can execute the control satisfactorily based on the data concomitant.

According to the third invention, in the transmission method of the present invention, the located audio current data is a one-bit system audio current data or the data resulting from compressing the current data. With the aforementioned arrangement, the data of the audio stream of the one-bit system or the data resulting from compressing the current data can be transmitted satisfactorily at the same time that the concomitant audio data is being transmitted. According to the fourth invention, in the transmission method of the first invention, the predetermined format is a format that complies with the protocol for transmitting the data in an isoncrono transfer mode through a transmission line, and a plurality of data having a predetermined data length as a unit are located in a range after a head prescribed by the protocol. With the aforementioned arrangement, the audio stream data of various kinds of systems can be transmitted successfully using an appropriate means such as a bus line of a system for transmitting data in an isochronous transfer mode. According to the fifth invention, in the transmission method of the fourth invention, this sub-label data is located in a range after the label and the data concomitant with the data of the audio stream of a system indicated by the tag data is located at an interval behind the sub-tag data in the data of a part of the unit within a plurality of data having a predetermined data length as a unit, and the data of the audio stream of a system indicated by the label data is placed in a range after the data label in the data of a remaining unit. With the aforementioned arrangement, the auxiliary data can also be transmitted by a data structure almost similar to that of the audio data and the audio data and the auxiliary data can be successfully transmitted as a data located within a unit package. According to the sixth invention, in the transmission method of the fifth invention, the data of the audio current located is a data of the audio current of the one-bit system or the data resulting from compressing the data of the current . With the aforementioned arrangement, the data of the audio stream of the u bit system or the data resulting from compressing the data of the current can be transmitted satisfactorily.

According to the seventh invention, in the method of transmitting the fifth invention, the data of fl} audio stream placed is the data of the audio stream of the DVD audio system. With the provision above, the data of the audio stream of the DVD audio system can be transmitted successfully. According to the eighth invention, in a transmission method for transmitting the data having a predetermined cato length as a unit among the devices to transmit the data through a predetermined transmission line by means of a predetermined format, the data of the label that indicates that the data is the data that results from compressing the digital audio data is placed in a starting position of the data having a predetermined data length as a unit as the transmitted data, this sub-label data indicating the compression system is located in a range after the data 20 of the label, the data of the audio stream compressed by a compression system indicated by the data of the sub-label is located in an interval behind the data of the sub-label and the data is transmitted. With the above mentioned provision, when the data resulting from compressing the digital audio data is transmitted, a transmission of this data can be judged fl) by the data of the label located in the starting portion of each data, the compression system I also know can judge by the data of the sub-label after the data of the label in the data resulting from compressing the digital audio data can be transmitted successfully by means of a transmission line of a ^ Default format, regardless of the system I 10 compression. According to the ninth invention, in the transmission method of the eighth invention, the predetermined format is a format that complies with a protocol for transmitting the data in a transfer mode Isochronous by a transmission line, and a plurality of data having a predetermined data length as a unit are located in a range after a head prescribed by the protocol. With the aforementioned provision, the data that The result of compressing the digital audio data can be successfully transmitted using the transmission line of the system which data is transmitted in the isochronous transfer mode. In accordance with the tenth invention, the method of the ninth invention, the label or sub-label indicating that the data is an auxiliary data is located in the data of a part of the unit of a fl) plurality of data having a predetermined data length and the data concomitant with the data of the audio stream is located in an interval behind the label or sub-label, indicating that the data is the auxiliary data. With the aforementioned provision, the auxiliary data can also be transmitted by means of a ^^ data structure almost similar to that of the data of audio. According to the eleventh invention, there is provided an apparatus for transmission consisting of an audio data input means for obtaining the data of the audio stream of a predetermined system, the generating means of the transmission data wherein the data obtained by the audio data input means is divided into data having a predetermined data length and the transmission data of a predetermined format is obtained by locating the data of the label indicating a data system transmitted in a split portion of each divided data, and the transmission means for transmitting the transmission data generated by the transmission generating means to a predetermined transmission line.

With the aforementioned arrangement, an audio data system can be judged by the data of the tag located in the starting position of each unit of data fl transmitted from the apparatus for transmission to the transmission line so that the data audio from 5 various systems can be transmitted to the transmission line. According to the twelfth invention, in the transmission apparatus of the eleventh invention, the data concomitant with the data of the audio stream of # 10 a system indicated by the tag data is located in a predetermined interval after the tag data, and the data of the audio stream of a system indicated by the tag data is placed in a remaining interval as the Transmission data generated by the transmission generating medium. With the aforementioned arrangement, the data concomitant with the audio data can also be transmitted simultaneously, and an apparatus for transmission can be obtained in which a receiving side can be satisfactorily controlled based on the concomitant data. According to the thirteenth invention, in the transmission device of the invention twelfth, the data of the audio current located in the transmission data generated by the data generating means of Transmission is a one-bit system audio stream data or data that results from compressing the current data. In the aforementioned arrangement, the data of the audio stream of the one-bit system or the data • which results from compressing the data of the current can be successfully transmitted from this transmission apparatus while the data concomitant with the audio data is being transmitted simultaneously. In accordance with the fourteenth invention, in the transmission apparatus of the eleventh invention, the The predetermined format generated by the transmission data generator means is a format that complies with a protocol for transmitting the data in an isochronous transfer mode by means of a transmission line, and a plurality of data having a data length as a unit are located in a range after a head prescribed by the protocol. With the aforementioned arrangement, a transmission data device capable of satisfactorily transmitting the data of the audio stream of several systems using the transmission line of the system to transmit the data in the isochronous transfer mode. In accordance with the fifteenth invention, in the transmission apparatus of the fourteenth invention, the The sub-label is located at an interval after the label and the data concomitant with the data of the audio stream of a system indicated by the tag data is located fl) in an interval behind the sub-label in the data of a part of the unit within a plurality of data having a predetermined data length as a unit located by the transmission data generating means, and the data of the audio stream of a system indicated by the data of the label is located in a range after the label in the unit data remaining. With the previously mentioned arrangement, the auxiliary data can also be transmitted by a data structure almost similar to that of the audio data. Therefore, an apparatus for transmission capable of transmitting the audio data and the auxiliary data is obtained as the data located inside the package of a unit. According to the sixteenth invention, in the transmission apparatus of the fifteenth invention, the data of the audio stream obtained by means of the input of the audio data and which is located by means of the The transmission data generator means is a data of the audio stream of the one-bit system or the data resulting from compressing the data of the current. With the aforementioned arrangement, a transmission apparatus capable of transmitting the data of the audio current of the one-bit system or the data resulting from compressing the data of the current is obtained. fl) In accordance with the seventeenth invention, in the transmission apparatus of the fifteenth invention, the data of the audio stream obtained by the audio data input means and which is located by means of the transmission data generator means is the data of the audio current of the DVD audio system. With the aforementioned arrangement, an apparatus is obtained ^ < 10 for transmission capable of satisfactorily transmitting the data of the audio stream of the DVD audio system. According to the eighteenth invention, a transmission apparatus is provided consisting of an audio data input means to obtain the data that results from compressing the digital audio data, a transmission data generating means in which the data obtained by means of the audio data input means is divided into data having a predetermined data length and the transmission data of a Format The default is obtained by locating the data of the label indicating that the data transmitted is the data that results from compressing the digital audio data and the data from the sub-label indicating the compression system in a split portion of each divided data, and - 1 the transmission means for transmitting the transmission data generated by the transmission data generating means to a predetermined transmission line. With the aforementioned provision, when the data that results from compressing the digital audio data is transmitted, the transmission of this data can be judged based on the data of the label located in the starting position of each data and the compression system as well. it can be judged based on the data of the sub-label after the data of the label. Therefore, an apparatus for transmission capable of satisfactorily transmitting the data resulting from compressing the digital audio data by a transmission line of a predetermined format, independently of the compression system, is obtained. According to the nineteenth invention, in the transmission apparatus of the eighteenth invention, the predetermined format generated by the transmission data generating means is a format that complies with a protocol for transmitting the data in an isochronous transfer mode through a transmission line. A plurality of data comprising the data of the tag, the data of the sub-tag and the audio data are placed in a range after a head prescribed by the protocol. With the aforementioned arrangement, a transmission apparatus capable of transmitting satisfactorily the data fl) resulting from compressing the digital audio data is obtained, using a transmission line of a system to transmit the data in the isochronous transfer mode. According to the twentieth invention, in the transmission apparatus of the invention nineteenth, the label indicating that the data is an auxiliary data is located in a starting portion in the concomitant data 10 with the digital audio data that is located in an interval behind the data of the label indicating that the data is an auxiliary data in the data of a part of a plurality of data located by the transmission data generating means. With the previously mentioned arrangement 15, an apparatus for transmission capable of transmitting the auxiliary data is obtained by means of the data structure almost similar to that of the audio data. According to the twenty-first invention, an apparatus for transmission is provided consisting of a receiving means for receiving the data transmitted through a predetermined transmission line, an identification means for establishing the data received by the means of transmission. reception to a data that has a predetermined data length as a unit and that identifies the data of the tag located in a starting portion of each unit and an audio data processing means for judging a system of the data of the audio stream located in a range after the data of the tag based on the results identified from the identification means and that carries out the processing of the audio data based on the results judged. With the aforementioned provision, the audio data system can be judged by the data of the tag located in the starting portion of each unit of the received data. According to the twenty-second invention, in the transmission apparatus of the twenty-first invention, the identification means also identifies the data concomitant with the data of the audio stream and located in a predetermined interval after the data of the label . With the aforementioned provision, the data concomitant with the audio data can be received simultaneously and the audio data received based on the concomitant data can be processed appropriately. According to the twenty-third invention, in the apparatus for transmission of the twenty-second invention, it is judged on the basis of the identified results of the identification means that the data of the audio stream received is an audio current data. of the system of a bit of the data that results from - - compress the data of the current. With the aforementioned provision, the data of the audio stream or the AV data that results from compressing the data of the current can be received at the same time that the data is received concomitant with the audio data. According to the twenty-fourth invention, in the apparatus for transmitting the twenty-first invention, the identification means identifies the data of the audio stream of the data comprising a plurality data having a predetermined data length as a unit in the interval following a head prescribed by a protocol to transmit the data in the isochronous transfer mode, by means of a transmission line. With the aforementioned provision, makes it possible to satisfactorily receive and process the data of the audio stream of the different systems using the transmission line of the system where the data is transmitted in the isochronous transfer mode. In accordance with the twenty-fifth invention, in the transmission apparatus of the twenty-fourth invention, the identification means identifies the data of the sub-label of the interval that follows the data label as a part of the unit in which it is located in a plurality of data that have a length of data predetermined, as a unit. When the means of - identification identifies the data of the sub-label, the data concomitant with the data of the audio stream is detected from the data of an interval behind the data of the sub-label. With the aforementioned arrangement, the auxiliary data can also be received by a data structure almost similar to that of the audio data so that the audio data and the auxiliary data can be received as data within the package of a unit. According to the twenty-sixth invention, in the apparatus for transmission of the twenty-fifth invention, it is identified by means of identification based on the label data or the data of the sub-label that a data of the audio stream in the one bit system with the data that results from compressing the current data. With the aforementioned arrangement, the data of the audio stream of the system of a bit of the data resulting from compressing the data of the current can be received satisfactorily. According to the twenty-seventh invention, in the apparatus for transmission of the twenty-fifth invention, it is identified by means of identification based on the data of the label or the data of the sub-label in which the data of the audio stream of the DVD system. With the aforementioned arrangement, the data of the audio stream of the DVD audio system can be satisfactorily received. According to the twenty-eighth invention, an apparatus for transmission is provided consisting of a receiving means for receiving the data transmitted through a predetermined transmission line, an identification means for establishing the data received by the receiving means. towards the data that has a predetermined data length with a unit and that identifies the label data and the data of the sub-label located in a starting position of each unit, And the audio data processing means for judging a compression system of the audio stream data located in a range after the tag data based on the identified result of the sub-tag data from the identification means that process the a.udio data based on the judged system. With the aforementioned provision, when the data resulting from compressing the digital audio data is received, it can be judged based on the data of the tag located in the starting portion of each data that the data is the compressed data, it can also be to judge a compression system based on the data of the sub-label after the data of the label, and the data that results from compressing the digital audio data can be satisfactorily received and fl) processed independently of the compression system. According to the twenty-ninth invention, 5 in a transmission system in which the data having a predetermined data length with a unit is transmitted between a first device and a second device to transmit the data through a line of data. predetermined transmission by a predetermined format ^ 10, this transmission system includes an audio data input means to obtain the data of the audio stream of a predetermined system, a means of generation of transmission data in 15 where the data obtained by means of the input of the audio data it is divided into data having a predetermined data length and a transmission data of a predetermined format is obtained by locating the data of the label indicating ur. data system transmitted in a split portion 20 of each divided data, and the transmission means for transmitting the transmission data generated by a transmission data generating means to a transmission line as the first device, and includes a means of receiving to receive the data transmitted through a transmission line, an identification means for establishing the data received by the reception means to the data having a predetermined data length as a unit and identifying the data of the label located in a starting portion of each unit, and an audio data processing means for judging a system of the audio stream data located in a range after the tag data based on the identified results of the identification means and it processes the audio data based on the judged system, like the second device. With the aforementioned arrangement, the audio data system can be judged based on the data of the tag located in the starting portion of the data of each unit transmitted by the transmission line. Therefore, it becomes possible to transmit the audio data of different systems through a transmission line. According to the thirtieth invention, in the transmission system of the twenty-ninth invention, the generating means of the transmission data of the first device locates the data of the sub-label and the data concomitant with the data of the audio stream. of the tag data, and - the identification means of the second device detects the data concomitant with the data of the flfc audio stream if it identifies the sub-label. With the aforementioned provision, the concomitant data with The data of the audio stream can be transmitted successfully.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a functional diagram showing an example of a system-wide arrangement in accordance with one embodiment of the present invention. Figure 2 is a functional diagram showing an example of an arrangement of an audio reproduction apparatus. Figure 3 is a functional diagram showing an example of an arrangement of an audio amplifier apparatus; Figure 4 is an explanatory diagram showing an example of a frame structure prescribed by the IEEE 1394 system. Figure 5 is an explanatory diagram showing an example of a direction space structure of a CRS architecture.

Figure 6 is an explanatory diagram showing examples of positions, names and operations of the main CRSs. Figure 7 is an explanatory diagram showing an example of an arrangement of a plug control register. Figure 8 is an explanatory diagram showing the examples of arrangements of oMPR, oPCR, iMPR, iPCR. Figure 9 is an explanatory diagram showing an example of a relationship between plugs, plug control registers and transmission channels. Figure 10 is an explanatory diagram showing an arrangement of a packet of the isochronous transfer mode. Figure 11 is an explanatory diagram showing an example of an arrangement of a transmission data head in accordance with an embodiment of the present invention. Figure 12 is an explanatory diagram showing an example of a transmission data arrangement in accordance with an embodiment of the present invention.

Figure 13 is an explanatory diagram showing an example of the compliance tag data flk with one embodiment of the present invention. Figure 14 is an explanatory diagram that shows an example of a data arrangement used when an audio stream data of the one-bit system is transmitted in accordance with an embodiment of the present invention. _ Figure 15 is an explanatory diagram that II 10 shows an example of an auxiliary data arrangement used when an audio stream data of the one-bit system is transmitted in accordance with an embodiment of the present invention. Figure 16 is an explanatory diagram that shows an example of an arrangement of all the data used when the data of the audio stream of the one-bit system is transmitted in accordance with an embodiment of the present invention. Figure 17 is an explanatory diagram showing an example of a data arrangement used when a compressed audio data is transmitted in accordance with an embodiment of the present invention. Figure 18 is an explanatory diagram showing an example of an auxiliary data arrangement used when the compressed audio data is transmitted in accordance with an embodiment of the present invention. flfc Figure 19 is an explanatory diagram showing an example of an arrangement of all the data used 5 when the compressed audio data is transmitted. Figure 20 is an explanatory diagram showing an example of an auxiliary data arrangement used when the DVD audio data is transmitted in accordance with an embodiment of the present invention. Figure 21 is an explanatory diagram showing an example of an arrangement of all the data used when the DVD audio data is transmitted in accordance with one embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in accordance with the present invention will now be described with reference to the accompanying drawings. First, an example of an arrangement of a network system to which the present invention can be applied will be described with reference to Figure 1. This network system includes a plurality of devices connected thereto through the bus of the data in series of the IEEE 1394 system that will service a - - digital communication control collective bar (this busbar will be referred to below simply as a "busbar"). Figure 1 shows an example in which two AV devices 100, 200 are connected through a busbar 1. The devices connected to the busbar 1 are those that include terminals through which they connect to the busbar of the IEEE system 1394, respectively. Here, an audio reproducing apparatus 100 capable of reproducing a digital audio disc (optical disc) called a compact disc (CD) and an audio amplifying device 200, capable of sending the digital audio data transmitted from the audio device. audio playback 100 connects to the busbar 1. The audio playback apparatus 100 includes a disc playback section 11, a controller 12 for controlling :: the disc playback of this disc playback section 11 and a section Transmission processing 13 for transmitting the digital audio data reproduced by the disk reproduction section 11 to the bus 1. This transmission processing section 13 carries out the transmission processing under the control of the controller 12. The disks which can be reproduced by the audio reproduction apparatus 100 in accordance with this mode, are not limited to the compact disc (CD) of the or regular above cited, and a super-audio CD (which will be referred to below as an "SACD") in which it can be played where a higher quality sound is recorded. Specifically, on the regular CD, the digital audio data is recorded wherein a sampling frequency Fs of about 44.1 kHz and a sample is formed of 16 bits per channel. On the other hand, the audio data registered in SACD is the data of an audio current data of the one-bit system of the DSD system (Direct Current Digital) where a sampling frequency is a very high frequency (e.g., frequency that is 64 times as high as the sampling frequency Fs of the regular CD). The data of this DSD system is registered in SACD as the data encoded by compression through a coding system called a DST (Direct Current Transfer) system, which is a system without any loss. As the SACD, a disc having a two-layer structure is available which includes not only a recording layer of the high tone quality audio data compressed by the aforementioned DST system but also an audio data recording layer of the Regular CD - The audio amplification apparatus 200 includes a controller 21 for controlling the operation within this device, a transmission processing section 22 for receiving and processing the data transmitted by the bus bar 1 and an output processing section of the receiver. 23 audio to perform processing such as demodulation, analog conversion and amplification in the audio data received in the transmission processing section 22, and analog audio signals sent from the audio output processing section 23 are supplied to the 2-channel loudspeaker apparatus 24L, 24R from which the analog audio signals emanate. In this case, the audio output processing section 23 is configured in such a way that it can convert the digital audio data reproduced from the regular CD into analog audio signals, demodulate the audio data, compressed by the DST system as the aforementioned SACD, and convert the demodulated audio data into analog audio signals. Figure 2 is a functional diagram showing an example of the audio reproduction apparatus 100 in particular. An optical pickup apparatus 102 reads the data from a disk (optical disk) 101 and a playback processing section 303 performs the processing of reproduction in the data read in this manner to provide a reproduced digital audio data. This reproduced audio data is supplied to a digital-to-analog flk converter 104, where it is converted into 2-channel analog audio signals. The analog audio signals 5 converted in this way are processed in an analog manner such as an amplification process by the analog processing section 105 and then sent from the analog output terminals (not shown) to the outside. This audio reproduction apparatus further includes an interface section 109 for connection to the busbar of the IEEE 1394 system. Therefore, the audio data reproduced from the disk 101 can be supplied from the processing section of the device. reproduction 103 to the interface section 109 and thus transmitted to the bus side of the IEEE 1394 system. The reproduction processing in the audio reproduction apparatus 100 and the transmission processing through the interface section 109 are carried out under the control of a central processing unit (CPU) 106. A memory 107 serving as a RAM for the work area is connected to the CPU 106. The operation information from a button 108 located in the operation board is supplied to the CPU 106 which can control the operation in response to the operating information. Further, when the interface section fl) 109 receives the data to control the operation of this device through the bus of the IEEE 5 1394 system, the received data is supplied to the CPU 106 so that the CPU L06 can carry out the control of the corresponding operation. The disc reproduction section 11 in the audio reproduction apparatus 100 shown in Figure 1 corresponds to the section of , such as the optical pick-up device 102 and the playback processing section 103. The controller 12 corresponds to the CPU 106, and the transmission processing section 13 corresponds to the interface section 109. Figure 3 is a functional diagram showing an example of the audio amplification apparatus 200, in particular. The audio amplification apparatus 200 includes therein a selection section 201 and the selection section 201 selects the admitted audio data. The Selection section 201 can be supplied with audio signals from a plurality of systems from the outside. When a supported signal is an analog signal, this admitted analog signal is converted into a digital data by an analog-to-digital converter 202 and supplies and is selected by the selection section 201. The audio data received in the interface section 215 connected to the busbar line of the fl) IEEE 1394 system may also be supplied to and selected by the selection section 201. A central processing unit 211 controls the selection of the selection section 201 based on the operation of a button 213, which will be described later, or something similar. The audio data selected by the section of The selection 201 is supplied to a signal processing section 203, where it is processed in a manner suitable for audio reproduction. For example, the appropriate processing for audio reproduction is an adjustment of tone quality, reverb processing or similar. The audio data processed by the signal processing section 203 is supplied to a digital-to-analog converter 204, where it is converted into analog audio signals. Analog audio signals converted in this way are supplied to an analog processing section 205, where they are processed in an analog processing manner such as being amplified to drive the loudspeakers. The processed audio signals are supplied to the loudspeaker 24L, 24R connected in this audio amplification apparatus 200. Even when only the two loudspeakers are connected to the audio amplifier apparatus as an example, when the multi-channel audio data is reproduced, the loudspeaker apparatus, which channel number 5 corresponds to the audio data of multiple channels can be converted into the audio amplifier apparatus. When there is a channel used exclusively to reproduce an audio signal that has a low frequency, a loudspeaker device called a super-coil speaker capable of reproduce audio signals that have low frequencies can be connected with the audio amplifier apparatus. The audio data processed by the signal processing section 203 can be transmitted through the interface section 215 to the bus bar line of the IEEE 1394 system. The audio processing in the audio amplifier apparatus 200 and the transmission processing through the interface section 209 are carried out under the control of the central processing unit (CPU) 211. A memory 212 serving as a RAM for the work area is connected to the CPU 211. The operation information from a button 213 placed on an operation board is supplied to the CPU 211 which controls the operation corresponding to the operation information or operation. The current state such as the selected state of the supported signal and the adjusted state of the tone quality may be presented in the form of fl) characters and graphic symbols by the presentation section 214 connected to the CPU 211. In addition when the section is of interface 209 receives the data to control the operation of this device through the busbar of the IEEE 1394 system, the received data is supplied to the CPU 211 and the CPU 211 can control the ^^ corresponding operation. The controller 21 in the apparatus w 10 audio amplifier 200 shown in Figure 1 corresponds to the CPU 211, the audio output processing section 23 corresponds to the circuits such as the selection section 201 and the signal processing section 203, and the processing section of Transmission 23 corresponds to the interface section 209. The respective devices 100, 200 connected to the busbar 1 are referred to as a "unit". With the controls prescribed by the general specification of the AV / C Digital Interface Control Unit (AV / C command) AV / C Command Transaction Device, one device can control another device by reading and writing the information stored in the respective units. The respective units (devices 100, 200) connected to bus 1 are called "nodes" (nodule) in the network. The node IDs are graded to the respective units, and a data transmission source and a destination for data reception in the network can be specified by the ID node. If it is detected that a new device is connected to the busbar 1 or 5 that a device connects or is disconnected from the busbar, then a reset of the busbar occurs and processing to adjust the ID node again must be carried out. Correspondingly, when readjustment of the busbar occurs, the apparatus of the 10 IDs towards the respective devices can be changed. Next, the manner in which the data is transmitted through the busbar 1 of the IEEE 1394 system with which the data are connected will be described. respective devices 100, 200. Figure 4 is a diagram showing a data transmission cycle structure of a device connected through IEEE 1394. In accordance with IEEE 1394, the data is divided into packets and transmitted in a time division manner based on a cycle of a duration of 125 microseconds. This cycle is created by a cycle initiation signal supplied from a nodule that has a cycle master function (any device connected to the bar colectoira). An isochronous packet secures a band necessary for transmission (which is referred to as a "band" even when it is a unit of time) from the beginning of all cycles. Correspondingly, in the isochronous transmission, the transmission of the data can be ensured within a constant time. However, if a transmission error occurs, then the data will be lost because this data transmission cycle structure has no mechanism to protect the transmission error data. In the asynchronous transmission where a nodule, which secures a bus as a result of arbitration at a time that is not used in the isochronous transmission of each cycle, transmits the asicrono packet, even when reliable transmission is assured using knowledge and retry, it can not become constant a regulation of transmission time. When a predetermined node transfers the data in the isochronous transfer mode, this node has to correspond to the isochronous function. At least one of the nodes corresponding to the isochronous function has to have a cycle master function. In addition, at least one of the nodes connected to the IEEE 1394 serial bus must have an isochronous resource manager function. IEEE 1394 is based on a CSR architecture (Control Record and Current Status) which has a 64 bit address space prescribed by ISO / IEC 13213. Figure 5 is a diagram to which reference will be made to fl) explaining a structure of the address space of the architecture of CSR The 16 bits of high order represent a nodule ID indicative of a nodule in each IEEE 1394, and the remaining 48 bits are used to designate an address space providing each nodule. The 16 high-order bits are separated into 10 bits of a bar ID ^ collector and 6 bits of a physical ID (the ID node in a critical sense). The values in which all the bits go to 1 are to be used for a special purpose and therefore, 1023 busbars and 63 nodes can be designated. The ID node must be graduated again when the bus bar reset occurs. The readjustment of the busbar occurs when the arrangement of the connector device is changed with the busbar 1. For example, when any of the devices connected to the busbar is disconnected or when the new device is connected to the busbar 1, it is to carry out the readjustment of the busbar. A space prescribed by 20 bits of high order d < * The address space of 256 terabytes prescribed by 48 bits of low order is separated into an initial registration space to be used as a singular record to the CSR of 2048 byte, a singular record to IEEE 1394 or similar, a private space and an initial memory space. A space prescribed by 28 bits of low order f) are to be used as a configuration ROM (read-only memory configuration), a space of 5 initial unit for singular use towards a node and plug control register (PCRs) if A space prescribed by the 20 bits of high order is the initial registration space. ^^ Figure 6 is a diagram to which reference will be made to explain the displaced addresses, names and operation or operation of the main CSRs. The displacement in Figure 6 indicates a displaced address of FFFFFOOOOOOOh (numbers with an h representing a hexadecimal notation) of which begins the initial registration space. An available bandwidth register (Bandwidth Available Register) having a shift 220h represents a band that can be assigned to isochronous communication, and only a nodule value that is being operated as an isochronous resource manager becomes effective. Specifically, even when this node includes a CSR shown in Figure 5, only the available bandwidth record of the isochronous resource manager becomes effective. In other words, only the Isochronous resource manager includes the available bandwidth registry considerably. The available bandwidth record retains a maximum fl) value when the band is not allocated to the isochronous communication and its value decreases each time the band is assigns a. Isochronous communication. A channel available register of the offsets 224h to 228h has bits corresponding respectively to the channel numbers from channel 0 to ^^ channel 63. If the bit is 0, then this shows that the corresponding channel 10 has already been assigned. Only the available node channel record that is being operated as the isochronous resource manager is effective. Referring again to Figure 5, a Conferencing ROM based on a general ROM format (read only memorial) is placed in the addresses 200h to 400h within the space of the initial record. The bus information block, the root directory and the unit directory are placed in the ROM of configuration. An ID number indicative of the vendor of the devices is stored in a company ID within the information block of the busbar. A unique ID that is unique to the device is stored in an ID of the integrated circuit.

In order to control the input and output of the device through the interface, the node includes a fl) PCR (Plug Control Register), prescribed by IEC 1833, in the 900h to 9FFh directions within the space of the initial unit shown in Figure 5. This is a support of a concept of a plug to form a signal channel similar to an analog interface from a logical point of view. Figure 7 is a diagram to ^^ which will be referred to to explain the disposition of w 10 PCR. The PCR includes an oPCR (Output Plug Control Register) that expresses an output plug and an iPCR (Input Plug Control Register) that expresses an input plug. The PCR also includes the oMPR (Output Master Plug Register) registers and ÍMPT (Input Master Plug Registration) indicating the information of the appropriate output jack or input jack for each device. Each device may not include a plurality of oMPRs and iMPRs but may include a plurality of oPCRs and iPCRs that correspond to the individual plugs depending on a device capacity. The PCR shown in Figure 7 includes 31 oPCRs and the iPCRs. The flow of the isochronous data can be controlled by operating the registers corresponding to these plugs.

Figure 8 is a diagram showing the provisions of oMPR, oPCR, iMPR and iPCR. The fl) Figure 8A shows the layout of the oMPR, Figure 8B shows the layout of the oPCR, Figure 8C shows the iMPR arrangement and Figure 8D shows the disposition of the iPCR, respectively. A code indicative of a maximum transfer rate of the isochronous data that the device can transmit or receive is stored in the capacity of the 2-bit data rate on the MSB side of the oMPR and of iMPR. A base of the oMPR broadcast channel prescribes the channel number to be used with the broadcast output. The number of output plugs of the device, that is, the value indicative of the number of 15 oPCRs is stored in the number of the 5-bit output sockets on the LSB side of the oMPR. The number of the input plugs of the device, that is, the value indicative of the number of iPCRs, is stored in the number of the 5-bit input plugs on the LSB side of the 20 iMPR. A main extended field and an auxiliary extended field are the areas defined for future extension. On the online device in the oPCR MSB and the iPCR shows the state in which the plug is in use. Specifically, if its value is 1, then it is indicated that the plug is in line. If its value is 0, then it indicates that the plug is out of line. A value of the diffusion connection counter of the oPCR and iPCR fl) expresses whether the broadcast connection (1) exists or not (0). A value that is a tip-to-tip connection counter that has a 6 bit width of the oPCR and the iPCR expresses the tip-to-tip connection number of the plug. The point-to-point connection (a so-called p-to-p connection) is a connection used to transmit the data between a nodule ^ specified and another specified node. I! 10 A value of a channel number having a 6-bit width of the oPCR and the iPCR expresses the number of the isochronous channel to which the plug is connected. A value of a data rate that has a 2-bit width of the oPCR expresses an actual transmission speed of the packets of the isochronous data which is output from the socket. A code stored in a higher ID that has a 4 bit width of the oPCR expresses a bandwidth of the upper ID of the isochronous communication. A value of a cost-effective load that has a 10 bit width of the oPCR expresses a maximum value of the data contained in the isochronous packets the plug can be handled. Figure 9 is a diagram showing a relationship between the plug, the control register of the plug and the isochronous channel. The connected devices with the busbar of the IEEE 1394 system are shown as AV 71 to 73 devices. The isochronous data whose channel was designated by oPCR [1] from oPCR [0] to oPCR [2] in fl) where the transmission speed and the number of oPCRs are prescribed by oMPR of the AV 73 device, transmits to channel number 1 of the IEEE 1394 serial bus. Based on the transmission speed of the input channel number 1 and the iPCR [0] of the iPCR [0] and the iPCR [1] where the speed of transmission and the ^^ Number of iPCRs are prescribed by iMPR of the device AV 71, the AV 71 device reads the isochronous data transmitted to channel number 1 of the IEEE 1394 serial bus. In a similar manner, the AV 72 transmits the isochronous data to the channel number 2 designated by the oPCR [0] , and the AV 71 device reads the isochronous data from channel number 2 designated by the iPCR [1]. In this way, the data is transmitted between the devices connected to the IEEE 1394 serial bus. 20 Next, a data arrangement used when the audio data of a high tone quality compressed by the DST system and reproduced of SACD by the audio reproduction apparatus 100 is transmitted through the IEEE 1394 serial bus above cited to the audio amplifier apparatus 200 and reproduced from the loudspeakers 24L, 24R connected to the amplifier apparatus 200 will be described f) with reference to Figure 10 and the following sheets of drawings. When the audio data is transmitted through the bus 1, the isochronous packet, which has been described so far with reference to Figure 4, is transmitted using an arbitrary channel in the isochronous transfer mode. Figure 10 is a diagram that shows an arrangement of an isochronous packet of a unit. A head of the isochronous packet of a quadruple interval is located in a starting portion, a head CRC (Cyclic Redundancy Check) that serves as an error detection code for a head. is located in the next quad interval and the next interval is adjusted to the data field. A data CRC that serves as an error detection code for the data is placed in the last quadruple interval. A 32-bit quad is formed (that is, 8 bits (4), and the data is transmitted to the unit of a quadruple. When the audio data is transmitted during the interval of the data field, a CIP (Common Isochronous Package) head is placed in the range of 2 quadruples, and the audio data or the like is placed in the interval remaining. The CIP head is a head indicative of a data attribute and has a disposition shown in FIG.

Figure 11. This portion of the CIP head has a f) disposition common to that used when the other data such as a video data is transmitted in the mode of fundamentally isochronous transfer. The data located in the CIP head shown in Figure 11 will be described. A 6-bit SID is a source node ID (Source node ID) and shows a nodule ID that transmits the packets. A DBS 8 bit is a data block size (Data Block Size) and shows a size of a divided data block. A 2-bit FN is a fraction number (Fraction Number) and shows a fraction number in which a source packet is divided into blocks of data. A 3-bit QPC is a quad pillow account (Quad Pad Account) and shows the number of quadruples that are added to divide the data into the unit of the package. A one-bit SPH is a source pack header (Source Pack Head) and shows whether the packet header source is added or not to the data. An 8 bit DBC is a data block account (Data Block Account) and is used as a continuous counter of the data block to detect a drop of a packet or the like. A 6-bit FMT is a format ID (Format ID) and shows a data format of a package.

The 24 bits after FMT fit an FDF (Format dependent field) which is a field that depends fl) of the format where SYT (Synchronization Time) is the synchronization data that is located at 16 bits.

The SYT is the field that is used to insert the time information to be used for synchronization in order to synchronize the data when the data is transmitted and received. The unit of time is based, for example, on a cycle counter. The null data is located in the reserved interval. In the case of this modality, the data in the FMT interval shows that the data is an audio data (music data). The data in the FDF interval shows a format that prescribes the audio data. Here, the data in the FDF interval 15 shows that it is an audio data prescribed by any format of the formats prescribed by the AM824 system. The following data of this portion of the CIP head has an arrangement in which the 32-bit data 20 (1 quadruple) shown in Figure 12 is repeated a predetermined number of times. A first 8 bit interval within this 32 bit data is assigned to the tag data [LABEL], and the audio data or the like is located at a 24 bit interval after the [LABEL] tag. 25 When the audio data of the regular CD is transmitted, the audio data of a sample is located using 16 bits of these 24 bits. fl) In the case of this modality, the label data [LABEL] is defined as shown in Figure 13. The 8-bit label data value is shown by a two-digit hexadecimal notation (a value indicated by adding h). As the meanings defined herein, the following are defined. A value that falls within a scale of "OOh" 10 to "3Fh" shows that the data is a digital audio data [Conformation IEC60958] that is defined by the IEC60958 standard. A value that falls within a range of "40" to "4Fh" shows that the dalto is a linear audio data of 15 multibit. A value that falls within a scale of "50h" to "57h" shows that the data is a one-bit system audio stream data [One Bit Audio Current] and that is the audio data [Single] that is not processed. 20 A value that falls within a scale of "58h" to "5Fh" shows that the data is a one-bit system audio stream data and that it is the [Encoded] audio data that has already been processed.

A value that falls within the "80h" scale to »« I3Th, "" shows that the data is the MIDI data [MIDI Conformation]. A value that falls within a range of "88h" to "8Fh" shows that the data is a time code and a sample account normalized by SMPTE (Society of Film and Television Engineers). A value that falls within a range of "COh" to "EFh" shows that the data is an auxiliary data [Auxiliary Data]. Other values are reserved. A value that falls within a range of "48h" to "4Fh" of the linear audio data of the multibit that falls within the range of "40h" to "4Fh" can be used to show that the data is from the audio data called DVD audio which is a class of multiple bit linear audio data. This audio DVD is a system used to record the audio data using an optical disc called DVD (Digital Video Disc or Digital Versatile Disc). The values are not limited to the aforementioned values shown in Figure 13 and other values can be defined as well. Figure 14 shows an example of a data arrangement used when a given value of the audio stream data of the one-bit system [Audio One Bit Current] is located on the tag data [LABEL]. An 8-bit data located in the starting portion of the data where a 32-bit fl) unit is formed as described is the tag data. When the value indicating [One Bit Audio Current] is 5 located by the 8 bit tag data, the data concomitant with the transmitted audio data (the audio data of the one bit system) is located in the 8 bit interval following this tag data as the sub ID of the audio data (Sub ID of the Audio Data) . In particular, the audio data sub-ID comprises a 1-bit check flag (Validity Flag), a 1-bit processed flag (Processed Flag) indicating whether or not the data is the audio data reproduced from a medium and which is not processed and the channel number 15 data of? bit (Channel number). This channel number data is used to indicate the channel number of the transmitted data when an apparatus of the audio data consists of a plurality of channels. When the audio data consists of 2 channels, for example, the data of the 20 channel number indicates 1 channel or 2 channels. The remaining 3 channels of the sub-IE1 of the audio data are reserved indefinitely. A 16-bit interval that follows is sub-ID of the audio data is assigned to a range in which it is located the audio stream data of the one-bit system. A data of the audio stream of the one-bit system of the present is the audio stream data fl) compressed by the DST system, reproduced from SACD. When the data of the audio stream of this system is transmitted, the auxiliary data must be transmitted. Figure 15 shows an arrangement of a block for transmitting the auxiliary data. Specifically, a value indicating the auxiliary data [Auxiliary Data] is located on the first 8 bit label data within 32 bits of a II 10 unit. An 8-bit interval following this tag data is assigned to a sub-tag data interval. The data related to the DST system which is the compression system of the audio data transmitted during this moment is placed in the sub-label interval. The data of audio information is placed in the remaining 16 bit interval. To be specific, the data related to a sampling frequency of the audio data is placed using 2 bits. The data of the attribute of a lane that serves as a copy control data (copy control) related to the data) is placed using 4 bits. The data of the channel (number of the channel that indicates the data) that constitutes the audio data is located using 3 bits. The data related to the number of channels of the loudspeaker is placed using 5 channels. The remaining 2 channels are reserved in a way indefinite.

The data related to the number of loudspeaker channels indicates that the data is, for example, the data f) of audio reproduced as stereophonic sounds of the channel 2, the audio data reproduced when the loudspeakers are located through the 5 channels prescribed by the ITU standard or the audio data reproduced when the loudspeakers are located through totally 6 channels of the normal ITU, channel 5 + LFE channel (exclusive low frequency channel). ^ 10 Figure 16 shows an arrangement used when the audio data of the DST system is converted into packets of isochronous transfer in actual practice by forming the aforementioned data. Specifically, after data of the head shown in Figure 11 is has located, the data shown in Figure 14, that is, the label data of the value indicative of the data of the audio stream of the one-bit system, the data of the sub ID of the audio data and the audio data of the DST system in the remaining 16 bit interval are continuously located a predetermined number of times in response to the ability of a packet to thereby transmit the audio data of a predetermined amount. The data shown in Figure 15, that is, the label data of the value indicative of the auxiliary data, the sub-label data related to the audio data of the DST system and the data of the audio information are located at least in the last 4 byte data, for example. fl) When the package having the arrangement shown in Figure 16 is transmitted from the audio playback apparatus 100, for example, through the busbar 1 to the audio amplifier apparatus 200, the audio data of the system DST of the reproduced format of the disc (or data resulting from the processing of the audio data of this format) can be transmitted to the m 10 audio amplifier apparatus 200 still in the form of digital data, processed to be sent by the audio amplifier apparatus 200 and emanating from the loudspeaker 24L, 24R connected to the amplification apparatus. In this case, since the data assembled in this way in packets as described above, the data of the audio stream of the one-bit system (data of the DST system) can be judged by the tag data, the details related to the data of the audio stream of the one bit system can be judged by the sub-ID of the audio data or the auxiliary data so that the audio output processing section 23 of the audio amplifier apparatus 200 which is the device on the side that received this data, can properly judge the processing status of the data (demodulation of DST system data, etc.). fl) Processing to convert the data into packets on the side of the audio playback device 100 is carried out by the transmission processing section 13 (Figure 1) to generate the data to be transmitted to bus 1, for example. The processing in which the respective data located in the ^ Packages are identified by the appliance side I 10 audio amplifier 200 and the respective data are extracted from the packets, is carried out by the transmission processing section 22 (Figure 1), for example. Even when the data on the label shows the data of the audio stream of the one-bit system and the audio data of the DST system that is transmitted in the example described so far, a value can be used indicating the non-linear PCM data [Non-Linear PCM] within the tag data shown in Figure 13 as the data of the label and the similar audio data can be transmitted. An example of a data arrangement used in this case will be described below. Figure 17 is a diagram showing an example of a unit data layout (32 bits) of this case. First, the data of the 8-bit label in the starting portion shows a non-linear PCM data [Nonlinear PCM]. A next 8-bit interval is assigned to a fl) sub-tag data interval, and the data related to the non-linear PCM compression system (DST system 5 indicating the data) is located by the sub-tag data. The data of the audio stream of one bit of the DST system is located in the remaining 16 bit interval. Here, as the data of the audio stream of a bit of the DST system, two data are located, each of which is form of 8 bits. Figure 18 shows an auxiliary data arrangement. Specifically, an auxiliary data that indicates the value (Auxiliary Data) is located by means of the tag data of 8 bit of departure of 32 bits of a unit.

The data such as a format that is related to the data is located in an 8-bit sub-tag data interval that follows this tag data and the different auxiliary data types are in the remaining 16 bit range. Figure 19 shows an example in which prepares an isochronous transfer packet using the data shown in Figures 17, 18 in actual practice. Also in this case, a large number of data blocks in which the audio data is located are located successively in response to the capacity of the data that can be transmitted through a package.

When the transmission data is carried out as described above and the data of the audio stream of a bit of the DST system is discriminated using the data of the label indicating the PCM data not linear and the data of the sub-label indicating the system DST, the data can be transmitted satisfactorily through collector hole 1 in a similar way to the case of the data arrangement shown in Figure 16. In the ^ case of this example, since the data of the label w 10 shows that the data is only the non-linear PCM data encoded by compression and the sub-label shows the details of the format of its compression system, as long as the data of the sub-label can be dealt with with the aforementioned compression system, the present The invention is capable of being carried out with the audio data (PCM data) compressed by any compression system. Next, the way in which the DVD audio data reproduced from the optical disc called DVD is transmitted by similar packages will be described, of course. This DVD audio data can be converted into the audio of multiple channels and the data of the main channel (2 channels) can become the data of a high quality such as the data that has a frequency of sampling of 96 kHz.

Figure 20 shows a data arrangement of a quadruple (32 bits) used when the Auxiliary (Auxiliary Data) data for the DVD audio is transmitted. In the case of DVD audio, two auxiliary data classes of the 5 data are prescribed (it is assumed to be the first auxiliary data) shown in Figure 20A and the data (which is supposed to be the second auxiliary data) shown in the Figure 20B. In the case of the first auxiliary data shown in Figure 20A, the data of the label [LABEL] ("DOh" in this example) indicating the 8-bit auxiliary data is located and a code ("Olh" in this example) to identify the first auxiliary data is located in the successive sub-label. In the intervals following the sub-label, it is: á located the scale control data 8-bit dynamics, a 4-bit downmix code, 1-bit emphasis flag, 1-bit downmix mode, and 1-bit code validity. The last bit is reserved. In the case of the second auxiliary data shown in Figure 20B, the auxiliary data is located indicating the 8-bit label data [LABEL] ("DOh" in this example) and a code ("02h" in this example) to indicate that the second auxiliary data is located at the next sub-label. In the intervals after the sub-label, the 4-bit data [Fs2] is located to identify a sampling frequency of the audio data or the like, a type of 4-bit GSM signals indicating a channel arrangement fl), a 5-bit channel layout [Channel assignment] indicating a channel assignment and a parity of the channel frame of 1 bit. The last 2 bits are reserved. Figure 21 shows the state in which the auxiliary data of the DVD audio having the aforementioned arrangement is located in the data blocks. This example assumes that the data of a certain data block [m] and the data of the next data block [m + l] are located in the isochronous packet of a unit. The first auxiliary data shown in Figure 20A is placed in the first quadruple interval and the second auxiliary data shown in Figure 20B is placed in the next interval of fourfold Then an audio data of a predetermined number is placed (interval of 6-quadruples). As the audio data, a sample word of 24 bit of a sample having a sampling frequency of 96 kHz is located at the interval of 2 quadruples that follows an 8 bit label ("48h" in this example). An 8-bit label ("4Eh" in this example) is followed by a 20-bit sample word from a sample that has a sampling frequency of 48 kHz located in the 4-quad range. The data The audio of the 6-quadruple interval is constituted by the audio data of the channels of which they are different from each other, for example. The audio data that fl) has the sampling frequency of 96 kHz and the audio data that has the sampling frequency of 48 kHz is can discriminate from each other by tag data. In the quadruple range where the sample word whose sample is formed of 20 bits, the null data, for example, is located in the remaining 4-bit interval. The arrangement described so far is repeated during each data block. When the DVD audio data is transmitted through the bus line, since the data of the label is located in each unit and the data of the sub-label is located in the interval of the auxiliary data in order to indicate the type of auxiliary data, the data concomitant with the transmitted DVD audio data can also be transmitted at the same time. Therefore, the side that received this data becomes capable of learning easily the details of the received DVD audio data. Although each package arrangement shown in Figure 16, Figure 19, and Figure 21 show an example, the present invention is not limited to the aforementioned arrangement. For example, while Since the auxiliary data is located at the end of a packet in the examples shown in FIGS. 16, 19, the auxiliary data can be located at other intervals. In addition, fl) the package can be carried out without an auxiliary data. Even though the transmitted audio data is the audio data of the DST system reproduced from SACD or the DVD audio data reproduced from DVD, the present invention is not limited thereto, and may be applied to the case in which other audio data encoded in a similar manner is transmitted. For example, the audio data of the system DST reproduced from SACD can be transmitted under the condition that the audio stream data label of the one-bit system [Audio One Bit Current]] is located in the one-bit system audio stream data that was demodulated towards the state in which the data of the audio stream of the one-bit system is not compressed. Even when the audio data reproduced from the disc playback device connected to the bus line of the IEEE 1394 system is transmitted to the amplifier apparatus in the aforementioned embodiment, the present invention is not limited to the same and applies to the case in which the audio data that was admitted (data admitted containing the data obtained by reproduction, etc.) to the AV device that gives service as another audio input section that is transmitted through a transmission line such as a bus line from one predetermined system to another fl) device. Regarding the format of the bar line collector which is the transmission line, it is unnecessary to say that the data transmission line of a system other than the bus line of the IEEE 1394 format can also be applied to the present invention. In this _ case, the bus line of the line of The transmission to carry out the transmission of the data is not always limited to a connected bus bar line and the present invention can also be applied to the case in which the data having a similar arrangement is transmitted through a transmission line. for transmit the data through the radio waves. For example, the data arrangement according to the present invention can also be applied to the case in which the audio data converted into packets by a similar data structure is transmitted between a plurality of devices using a radio transmission line of a standard called "Bluetooth" (Blue tooth).

Claims (30)

- - CLAIMS

1. In a transmission method of transmitting the data having a predetermined data length as a unit between the devices for transmitting the data through a predetermined transmission line by a predetermined format, the transmission method comprises the steps of: locating the tag data indicating a data system of the audio stream transmitted in a starting portion of the data having the predetermined data length as a unit; and locate the data of the audio stream of the system in an interval behind the data of the label and transmit the resulting data.

2. A transmission method according to claim 1, wherein the data concomitant with the data of the audio stream of the system is located at a predetermined interval after the data of the label and the data of the audio stream of the system it is located in the remaining interval.

3. A transmission method according to claim 2, wherein the data of the audio stream located is an audio current data of the one-bit system or the data resulting from compressing the current data.

4. A transmission method according to claim 1, wherein the predetermined format is a format that complies with a protocol for transmitting the data in an isochronous transfer mode through the transmission line and a plurality of data having The length of the predetermined data as a unit is located at an interval following a head prescribed by the protocol.

A transmission method according to claim 4, wherein the data of the sub-tag is located in a range after the tag and the data concomitant with the data of the audio stream of the system is located in a range which follows the data of the sub-label in the data as a part of the unit of the plurality of data having the predetermined data length as a unit, and the data of the audio stream of the system is located in a range that Follow the label on the data of the remaining unit.

6. A transmission method according to claim 5, wherein the data of the audio stream located is an audio current data of the one-bit system or the data resulting from compressing the current data.

7. A transmission method according to claim 5, wherein the located audio stream data is an audio stream data of the DVD audio system.

8. In a transmission method in which the data having a predetermined data length as a unit is transmitted between the devices to transmit the data through a predetermined transmission line by a predetermined format, the transmission method comprises the steps of: locating the data of the tag indicating that the transmitted data is the data that results from compressing the digital audio data in a starting portion of the data that has the length of the predetermined data as a unit; locate the sub-label data indicating the compression system at an interval that follows its label data; and locating the data of the compressed audio stream by means of the compression system indicated by the data of the sub-label in a following interval of the data of the sub-label and transmitting the resulting data.

9. A transmission method according to claim 8, wherein the predetermined format is a format that complies with a protocol for transmitting the data in an isochronous transfer mode through the transmission line, and a plurality of the data. that have a length of the data as a unit are located at a fl) interval that follows a prescribed head by means of a protocol.

10. A transmission method according to claim 9, wherein the label or sub-label indicating that the data is an auxiliary data is located in the data of a part of a unit of the plurality of data that has the predetermined data length and the data 10 concomitant with the data of the audio stream is located in an interval behind the label or the sub-label indicating that the data is an auxiliary data.

11. A transmission apparatus comprising: an audio data input means for obtaining the data of the audio stream of a predetermined system; a transmission data generating means in which the data obtained by means of the input data of the audio data is divided into a data having a predetermined length of data and the transmission data having a predetermined format is obtained by locating the data of label indicating a system of the data transmitted in a split portion of each divided data; and a transmission means for transmitting the transmission data 25 generated by the generating means of the transmission data to a predetermined transmission line .. fl)

12. A transmission apparatus according to claim 11, wherein the concomitant data the 5 data of the audio stream of the system is located in a predetermined interval following the data of the label and the data of the audio current of the system is located in the remaining interval as the transmission data generated by means of the data generating means of transmission.

13. A transmission device according to claim 12, wherein the data of the audio current located in the transmission data generated by the transmission data generating means is a data of the audio current of the system of a transmission system. bit or the data that 15 results from the compression of the current data.

14. A transmission apparatus according to claim 11, wherein a predetermined format generated by the transmission data generating means is a format that complies with a protocol for transmitting the data. Data in an isochronous transfer mode through the transmission line and a plurality of data having the predetermined data length as a unit are located in a range following a head prescribed by the protocol.

15. A transmission apparatus according to claim 14, wherein the sub-tag is located fl) in a range that follows the tag and the data concomitant with the data of the audio stream of the system is located in an interval behind the sub-label in the data of a part of a unit of a plurality of data having a predetermined data length as a unit located by the generating means of the transmission data, and the data of the audio stream of the system is located in an interval that follows the label in the data of the remaining unit.

16. A transmission apparatus according to claim 15, wherein the current data of The audio obtained by means of the input of the audio data and which is located by means of the generating means of the transmission data is a data of audio current of the system of a bit of the data that results from compressing the data of the current.

17. A transmission device according to claim 15, wherein the data of the audio current obtained by means of the audio data input means and which is located by means of the generating means of the transmission data is the data of the audio stream of a 25 DVD audio system.

18. A transmission apparatus comprising: an audio data input means for obtaining the data resulting from the compression of the digital audio data; 5 a transmission data generating means in which the data obtained by means of the input data of the audio data is divided into data having a predetermined data length and the transmission data that has a ^ z default format is obtained by locating the data of the 10 a label indicating that the transmitted data is the data resulting from compressing the digital audio data and the sub-label data indicating the compression system in a split portion of each divided data; and the transmission means for transmitting the transmission data 15 generated by the generating means of the transmission data to a predetermined transmission line.

19. A transmitting apparatus according to claim 18, wherein a predetermined format generated by the transmission data generator means 20 is a format that complies with a protocol for transmitting the data in an isochronous transfer mode through the transmission line and a plurality of data comprising the data of the label, the data of the sub-label and the audio data are located in a range that follows a head prescribed by the protocol. fl)

20. A transmission apparatus according to claim 19, wherein the label indicating that 5 the data is an auxiliary data is located in a starting portion and the data concomitant with the digital audio data is located in an interval behind the data of the label indicating that the data is the auxiliary data in the data of a part of a plurality of data located through the medium 10 transmission data generator.

21. A transmission apparatus comprising: a receiving means for receiving the data transmitted through a predetermined transmission line; 15 an identification means for adjusting the data received by the receiving means to a data having a predetermined data length as a unit and identifying the data of the tag located in the starting portion of each unit; and an audio data processing means for judging a data system of the audio stream located in the interval following the tag data based on the identified results of the identification means and carrying out the processing of the data of the audio data. audio based on 25 the system judged.

22. A transmission apparatus according to claim 21, wherein the identification means fl) identifies the data concomitant with the data of the audio stream located in a predetermined interval following the data of the label.

23. A transmission apparatus according to claim 22, wherein it is judged based on the identified results of the identification means that the data of the received audio stream is a data of 10 one-bit system audio stream or data resulting from the compression of the current data.

24. A transmission apparatus according to claim 21, wherein the identification means identifies the data of the plurality of data that has the 15 predetermined data length as a unit during a range following a head prescribed by a protocol where the data is transferred in the isochronous transfer mode through the transmission line.

25. A transmission apparatus according to claim 24, wherein the identification means identifies the data of the sub-tag located in a range following the data label of a part of a unit of the plurality of data. which have the predetermined data length, such as a unit and detects the data concomitant with the data of the audio stream of the data located in an interval behind the sub-label if the data of the sub-label is identified. fl)

26. A transmission apparatus according to claim 25, wherein the identification means 5 identifies, based on the data of the label or the data of the sub-label that a data of the audio stream of the system of u bit or the data that results from the compression of the current data is received. ^ z

27. A transmitting apparatus in accordance with w 10 claim 25, wherein the identification means identifies, based on the data of the tag or the sub-tag data, that the data of the audio stream of the DVD audio system.

28. A transmission apparatus comprising: a receiving means for receiving the data transmitted through a predetermined transmission line; means of identification for adjusting the data received by the receiving means to a data that has a 20 predetermined data length as a unit and identifying the data of the label located in a starting portion of each unit and the data of the sub-label located after the data of the label; and an audio data processing means for 25 judging a compression system of the audio current data based on the identified results of the sub-label data by means of the identification means and carrying out the processing of the audio data based on the judging system of compression.

29. In a transmission system to transmit the data having a predetermined data length as a unit between a first device and a second device, to transmit the data through a line ^^ of predetermined transmission by a predetermined w 10 format, and the transmission system comprises: an audio data input means for obtaining a data of the audio stream of a predetermined system; a transmission data generator medium in Wherein the data obtained by means of the input of the audio data is divided into a data having a predetermined data length and a transmission data of a predetermined format is obtained by locating the indicator system of the data of the transmitted data label in 20 a split portion of each divided data; and a transmission means for transmitting the transmission data generated by the transmission data generating means to the transmission line as the first device; and a receiving means for receiving the data transmitted through the transmission line; fl) an identification means for adjusting the data received by the receiving means to a data having a predetermined data length as a unit and identifying the data of the tag located in a starting portion of each unit; and the audio data processing means to identify a data system of the audio stream II 10 located in a range after the tag data based on the identified results of the identification means and carrying out the processing of the audio data based on the system judged as the second device.

30. A transmission system according to claim 29, wherein the generating means of the transmission data of the first device locates the data of the sub-label and the data concomitant with the data of the audio stream in addition to the data of the tag and the aforementioned identification means of the second device detect the data concomitant with the data of the audio stream if the identification means identifies the sub-tag.