CN1652239B - Method for providing special information of program recorded on high-density CD medium - Google Patents
Method for providing special information of program recorded on high-density CD medium Download PDFInfo
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- CN1652239B CN1652239B CN2005100082036A CN200510008203A CN1652239B CN 1652239 B CN1652239 B CN 1652239B CN 2005100082036 A CN2005100082036 A CN 2005100082036A CN 200510008203 A CN200510008203 A CN 200510008203A CN 1652239 B CN1652239 B CN 1652239B
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Abstract
The present invention relates to a method for providing data flow and program special information (PSI) necessary for selecting, separating and decoding the data flow of digital TV set and its equipment. When the PSI is transferred into digital TV set, said invention adopts the following steps: measuring time duration of PSI, creating the time information of measured time duration leading transmission time of first TP belonging to dataflow, converting PSI into at least one TP in which the created time information is added, and before data flow TP transferring converted PST TP, so PSI provided together with digital data flow can be used for selecting and decoding the data flow recorded on the medium on the digital TV set, and do not lose data.
Description
The application be submitted on May 21st, 2002, application number is 00815977.7, name is called the dividing an application of application for a patent for invention of " method that is recorded in the program specific information on the high-density CD medium is provided ".
Technical field
The present invention relates to as digital television provides the data stream that reads from the information recording carrier of high-density digital general CD (HDVD) and so on, and digital television carries out the method and apparatus of the necessary program specific information of selection, separation and decode operation (PSI) of digit data stream.
Background technology
Recently, enlarge gradually its impact for representing the digital television that the high quality image that carried by digital TV broadcast signal develops.The digital TV broadcast signal that is received by digital television not only comprises digital video and voice data, also comprises being interrupted the PSI that inserts, so that the much information about broadcast program to be provided.PSI is also referred to as PSIP (performance system information protocol) sometimes.
Digital television is selected a channel, and the PSI that arrives with reference to discontinuous reception is the separation of the digital stream of selected channel and be decoded as pictures and sounds.
Simultaneously, as shown in Figure 1, the high density compact disc equipment that is used for regeneration HDVD (its record standard also under discussion) of developing is connected to digital television by IEEE 1394 standards.Yet when from compact disk equipment 100 receptions and demonstrating data stream, digital television 200 still needs PSI, to select data stream and representing that the control selected data flows.
Therefore, when the mpeg format data stream of compact disk equipment 100 regenerative recordings on HDVD, and when sending to the digital television 200 that the digital interface by IEEE1394 standard and so on connects, it must be for using transport stream (TS, transmission grouping (TP) formation by 188 byte longs) digital television 200 of form provides PSI, PSI can comprise Program Association Table (PAT), Program Map Table (PMT), conditional access table (CAT) etc., as shown in Figure 2.
In order as digital TV broadcast signal, to provide the PSI that is interrupted or periodically is used for recorded data stream for digital television, can the data recorded area of HDVD shown in Figure 3 ' disperse among the AREA 1 ' and repeatedly record PSI, and and data stream sequentially recover together and transmit the PSI that repeats to write.
Yet, if disperse and repeatedly record PSI at the data recorded area of CD, can greatly reduce real data, i.e. the posting field of video and/or audio data, this causes the reduction of video disc recording efficient.
In addition, even moved the regeneration point at the keyboard commands according to the user, recovered data receiver after perhaps the digital interface of IEEE 1394 standards and so on resets, before receiving the PSI that is recovered by the PSI of dispersed record in data recorded area by permanent order, digital television can not represent received data stream.Because before the PSI that receives for data stream, digital television can not select data stream to be decoded as actual image and/or sound, in video and/or audio frequency, have inevitably discontinuous, perhaps temporary blank screen.
Simultaneously, digital television is included in PCR (timer reference of programs) among the TP according to interruption and decides and when decode and represent the TP that receives, and therefore, if PCR is discontinuous, mistake can occur when decoding and represent received TP.Therefore, for the fault that prevents that this type of is possible, when PSI being converted to TP and be inserted among the TS of real data, the PCR that the temporal information of PSI must and comprise in containing the continuous T P of real data keeps continuity.
Summary of the invention
The digital television that connects the purpose of this invention is to provide a kind of PSI supplying method, so that can stably represent video image and/or sound.
Another object of the present invention provides a kind of PSI recording method and recording medium, so that digital television can stably represent video image and/or sound.
Another object of the present invention provides a kind of information recording/reproducing apparatus, so that the digital television that connects can stably represent video image and/or sound.
According to the present invention, provide a kind of when under transport stream format data transmission during to the equipment that connects, for the equipment that connects provides the method for program specific information, may further comprise the steps: (a) reading out data from the recording medium; (b) when initial data transfer will be carried out, before the data that transmission is read, transmit the transmission grouping of at least one program specific information.
According to the present invention, a kind of equipment that program specific information is provided for the equipment that connects when regeneration writes on data on the recording medium is provided, comprising: pick-up (32) is used for reading the signal that is recorded on the recording medium; Signal processor (33,34), the signal that reads for the treatment of described pick-up (32) is therefrom to obtain to comprise at least the numerical data of real data; Multiplexer (35) is used for described program specific information and is undertaken multiplexed by the real data that described signal processor (33,34) obtains; Controller unit (37) is used for when will carrying out initial data transfer by this controller unit, before the described real data of transmission, creates and transmit the transmission grouping of at least one program specific information by multiplexer (35).
According to the present invention, also provide a kind of on recording medium and the data stream method of recorded program specific information together, comprising: (a) receive digital stream; (b) from received digital stream, select program specific information, and the digital stream of the program specific information that has been selected at the data recorded area of recording medium record; (c) program specific information of separating is write on other recording areas outside the data recorded area.
Device according to PSI supplying method of the present invention and the described method of realization is characterized in that, when the beginning transmitting data stream, before transmitting data stream, their transmit the TP that is made of PSI.
Device according to PSI supplying method of the present invention and the described method of realization, it is characterized in that, when transmission PSI, they measure the time span of PSI waiting for transmission, before the transmission time of first TP of data stream, time span creation-time information by measuring is converted to the TP that at least one writes institute's creation-time information with PSI, and transmits the PSI TP of conversion before data stream TP.
According to of the present invention a kind of when with the transport stream TS form data transmission during to the equipment that connected, for the equipment that connects provides the method for program specific information PSI, may further comprise the steps: (a) reading out data from the recording medium; (b) at least one transmission grouping TP of transmission data streams read; And (c) in following situation, PSI being inserted into data TP, described situation comprises: when changing the regeneration program; Transmitting data stream for the first time; Carried out long rail and jumped, wherein very large variation has occured in the reproduction position on the recording medium; When connection device is started shooting, receive order by digital interface; In digital interface bus reset occurs perhaps.
According to of the present invention a kind of when with the transport stream TS form data transmission during to the equipment that connected, for the equipment that connects provides the device of program specific information PSI, this device comprises: reading unit is used for reading in the data that record on the recording medium; And control module, being used for transmitting at least one transmission grouping TP of the data that read, and in following situation, PSI being inserted among the data TP, described situation comprises: when changing the regeneration program; Transmitting data stream for the first time; Carried out long rail and jumped, wherein very large variation has occured in the reproduction position on the recording medium; When connection device is started shooting, receive order by digital interface; In digital interface bus reset occurs perhaps.
Because according to the device of PSI supplying method of the present invention and the described method of realization, digital television can make its local clock and the temporal information that writes among the PSI TP that receives keep then after synchronization, PSI TP being made an explanation synchronously.Afterwards, it can continuous logarithmic separates and decodes according to stream TP, and does not lose any TP.Therefore, even PSI provides for digital television is additional, the temporal information and the data stream that write among the TP of continuous P SI still can guarantee the continuity of time, may be by the discontinuous possible loss of data that causes of time thereby fundamentally avoided.
Description of drawings
Accompanying drawing helps to understand better the present invention, has shown the preferred embodiments of the present invention, and explains together principle of the present invention with instructions.In the accompanying drawing:
What Fig. 1 showed is optical disk reproducing apparatus connected to one another and digital television;
What Fig. 2 showed is the several message units that consist of program specific information (PSI);
What Fig. 3 showed is the recording areas and the content that will record thereon of optical disc recording medium;
Fig. 4 shows is according to the recording areas of optical disc recording medium of the present invention and will records thereon content;
Fig. 5 shows is the PSI general information that concentrates on all PSI in the district of recording medium for management;
What Fig. 6 showed is the compact disk equipment block diagram that realization provides the method for data stream and PSI according to the present invention;
What Fig. 7 showed is the format sample that is transferred to the stream of the digital television that connects.Embodiment
In order to understand better the present invention, in connection with accompanying drawing preferred embodiment is described now.
Fig. 4 is the subregion HDVD that can support according to PSI transmission method of the present invention.
HDVD among Fig. 4 has two recording areas ' AREA 1 ' and ' AREA 2 ', ' AREA1 ' be used for by stream object unit use such as video/or the real data of voice data, and ' the management information that AREA 2 ' is used for such as navigation data, navigation data is used for control regeneration and represents the SOBU of the record that consists of flow object (SOB), and SOB is usually corresponding to single program or continuous recording digital stream part from the beginning to the end.
As shown in Figure 4, all PSI (will offer the digital television by the digital interface connection of IEEE1394 and so on, in order to select data stream from Disc player, and the stream of selecting decoded) ' among the AREA 2 ', therefore there not be to reduce the data recorded area ' memory capacity of AREA 1 ' for the video and/or audio data without the concentrated management information recording areas that writes on that repeats.
Be all PSI of centralized recording, the step below order is carried out.
At first, with reference to Fig. 2, from the digital TV broadcast signal that receives, detect and isolate above-mentioned parts such as comprising PAT, PMT, CAT, and insert discontinuously PSI in the digital TV broadcast signal.Each isolated PSI is processed into the digital stream of the record format that is suitable for writing HDVD, simultaneously, each isolated PSI is compared with the PSI that detects previously, whether new to confirm isolated PSI, in other words, isolated PSI comprises the data different from front PSI.If isolated PSI is new, then write in order the management information area ' among the AREA 2 ' that can write HDVD.
After writing each PSI, create the PSI write and each link information between the SOB, and append to each and write among the PSI.Link information comprises the starting and ending time of corresponding SOB.
When processing each PSI, except PAT, PMT and CAT information, can also add be used for the control information that the difference of the data stream that recording medium provides represents to PSI, and some fields that can replace PSI, to represent better record data stream rather than broadcast data stream.
What Fig. 5 showed concentrates the PSI general information that writes on HDVD ' AREA 2 ' all PSI of district for usually management.As shown in Figure 5, add the PCR offset field that is labeled as ' PCR_offset ' to the PSI general information.TP time span with each useful load that comprises PSI is filled in the PCR offset field, like this, the transmission time (perhaps PCR) that first TP that belongs to PSI TP has than first TP of data stream TP (will transmit after PSI TP) has shifted to an earlier date the temporal information that writes on the time span in ' PCR_offset ' field.
For example, if hypothesis writes the PCR offset field with 500, the transmission time ' TT1 ' (perhaps PCR) of following first TP that comprises part PSI that data stream TP is arranged to have first TP of data stream deducts the temporal information after 500, i.e. ' TT1-500 '.If before transmitting data stream twice the transmission PSI, transmit PSI first TP have temporal information ' TT1-500 * 2 ', and first TP of second transmission PSI has temporal information ' TT1-500 * 1 ', in general, if PSI is provided N time, then first TP of PSI of the M time transmission has temporal information ' TT1-500 * (N-M+1) '.
Therefore, the temporal information that is included among PSI TP or the TP is continuous with PSI TP data stream TP afterwards usually in time, thereby digital television can make its local clock synchronous with the temporal information maintenance among one or more TP that writes on the PSI that received before data stream TP, after synchronization, the PSI TP that receives is decoded and explains.Afterwards, its can to data stream TP carry out continuous separate from and decoding, and can not lose any TP.
Fig. 6 shows is the block scheme of realizing the compact disk equipment of the HDVD player and so on according to the method that data stream and PSI be provided of the present invention.
In the compact disk equipment 300 such as Fig. 6 configuration, microcomputer 37 realizes providing the operation of PSI for digital television 200, and the data stream of described PSI and current regeneration is associated.For this reason, when the direct input keyboard order of user, when perhaps receiving packet command from the digital television 200 that connects by IEEE 1394, perhaps when bus reset had appearred in IEEE 1394, it at first ' read PSI from the management information recording areas the AREA 2 '.Then, digital television 200 makes an explanation to the PSI that received before data stream by IEEE 1394 buses, and data stream is selected and is decoded based on the explanation of PSI.The below introduces this operation in detail.
Fig. 7 is the format sample that is transferred to the stream of the digital television that connects.Be the PSI in the transmission diagram 7 and data stream, microcomputer 37 checks whether playback of data changes to next SOB when regeneration HDVD 31.If changed to (N+1) individual SOB from N SOB, microcomputer 37 is from ' AREA reads the relevant PSI with (N+1) individual SOB the 2 ' district, and the PSI that reads delivered to TS multiplexer 35, if necessary, its PSI with input is converted into a TP or a plurality of TP (being called ' TP group ').TS multiplexer 35 is under the control of microcomputer 37, and before first TP that belongs to (N+1) individual SOB, TP or TP after the transmission conversion organize.
Preferably repeat to provide PSI TP or TP group once more than, to avoid possible mistake in transmission and/or when receiving.Example among Fig. 7 is an example, has namely carried out the PSI transmission before of five secondary data stream, and by a plurality of TP (that is, TP group) carrying PSI.
Be five transmission PSI, microcomputer 37 reads the PCR offset field of PSI general information and transmission time information, perhaps write on the PCR among first TP of (N+1) individual SOB, then, its use off-set value and the transmission time (perhaps PCR) of reading are calculated each temporal information that each PSI TP organizes first TP.
If transmission time information or the PCR that writes on first TP of (N+1) individual SOB are ' PCR1 ', obtaining five temporal informations in the result of calculation of slave microcomputer 37 is ' PCR1-(PCR_offset * 5) ', ' PCR1-(PCR_offset * 4) ', ' PCR1-(PCR_offset * 3) ', ' PCR1-(PCR_offset * 2) ', ' PCR1-(PCR_offset * 1) '.Five temporal informations that obtain are since time ' PCR1-(PCR_offset * 5) ', and sequential write is in first TP of each PSI.
Because same PSI is provided for several times, even first is all lost fully with second PSI, and carry out synchronously with the temporal information of first TP of the 3rd the PSI internal clocking to digital television, acquisition is about the information of data stream the explanation of the TP of the 4th and the 5th PSI that also can receive from success.Therefore, digital television can select to follow the data stream of PSI TP, and the data stream of selecting is separated and decodes based on the explanation of PSI.
Except when changing the regeneration program, when namely beginning to regenerate next SOB, in the different situations, before data stream, also provide PSI for digital television below:
A) transmitting data stream for the first time;
B) carried out long rail under user's keyboard input request and jumped, wherein very large variation has occured in the reproduction position on the recording medium;
C) when digital television 200 start that is connected with compact disk equipment 300 by IEEE 1394 standards or when changing channel, receive order by the microcomputer 37 of compact disk equipment 300 by its digital interface;
D) connecting interface between compact disk equipment 300 and the digital television 200 is reset;
In the above embodiment of the present invention, HDVD is used as recording medium.Yet the present invention need not videograph/regenerating unit that any modifications and variations also can be applicable to magnetic recording media, and wherein video content record is in digit data stream.
If recording medium is different from the above-mentioned HDVD that comprises PSI, do not have PSI, regenerating unit can oneself create PSI, and before the stream of regenerated data PSI is being transferred to digital television as mentioned above.
For example, if the CD of compact disk equipment is the traditional DVD with PSI among insertion Fig. 6, microcomputer 37 creates one or more TP of PSI, this can utilize the basic PSI relevant information of pre-save in storer 38 that digit data stream is decomposed into Audio and Video stream, and inserts the temporal information that is obtained by above-mentioned Time Calculation method in PSI TP or TP.When the transmitting data stream first time, perhaps when receiving when being connected the digital television that connects or changing the relevant order of the event of its channel, the PSI TP that comprises temporal information that creates was offered the digital television of connection before stream of regenerated data.
Claims (9)
- One kind when with the transport stream TS form data transmission during to the equipment that connected, for the equipment that connects provides the method for program specific information PSI, may further comprise the steps:(a) reading out data from the recording medium;(b) at least one transmission grouping TP of transmission data streams read; And(c) in following situation PSI is inserted into data TP, described situation comprises: when changing the regeneration program; Transmitting data stream for the first time; Carried out long rail and jumped, wherein very large variation has occured in the reproduction position on the recording medium; When connection device is started shooting, receive order by digital interface; In digital interface bus reset occurs perhaps.
- 2. method according to claim 1, wherein, described step (c) may further comprise the steps:(c1) time span of the described PSI of measurement;(c2) creation-time information, this temporal information has taken the lead measured time span than the transmission time of first data TP that will be transmitted after the transmission that is interrupted described data TP;(c3) temporal information that creates is added into the TP that is changed by described PSI; And(c4) before described first data TP of transmission, this PSI TP that includes temporal information is transferred to the equipment of this connection.
- 3. method according to claim 2, wherein, this time span is written into and minute is used in the management information area that administrative institute states PSI.
- 4. method according to claim 1, wherein, described step (c) created at least two TP that comprise described PSI before comprising this first TP of data, and transmitted whole PSI TP that create.
- One kind when with the transport stream TS form data transmission during to the equipment that connected, for the equipment that connects provides the device of program specific information PSI, this device comprises:Reading unit is used for reading in the data that record on the recording medium; AndControl module is used for transmitting at least one transmission grouping TP of the data that read, and in following situation PSI is inserted among the data TP, and described situation comprises: when changing the regeneration program; Transmitting data stream for the first time; Carried out long rail and jumped, wherein very large variation has occured in the reproduction position on the recording medium; When connection device is started shooting, receive order by digital interface; In digital interface bus reset occurs perhaps.
- 6. device according to claim 5, wherein, described control module at the described PSI TP of transmission to the equipment that connects, fill in the time information in by the TP of described PSI conversion, this temporal information takes the lead the transmission time of first TP that will be transmitted after the transmission that is interrupted described data TP.
- 7. device according to claim 5, wherein, described control module is at least two TP that comprise described PSI of transmission before the described data TP of transmission.
- 8. device according to claim 5, wherein, described control module creates described PSI based on information pre-recorded on described recording medium.
- 9. device according to claim 5, wherein, described control module creates described PSI based on the information that is write in advance on the information storage medium except described recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100082036A CN1652239B (en) | 2000-11-22 | 2000-11-22 | Method for providing special information of program recorded on high-density CD medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100082036A CN1652239B (en) | 2000-11-22 | 2000-11-22 | Method for providing special information of program recorded on high-density CD medium |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008159777A Division CN1197365C (en) | 2000-11-22 | 2000-11-22 | Method for providing program specific information recorded on high density disc medium |
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| Publication Number | Publication Date |
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| CN1652239A CN1652239A (en) | 2005-08-10 |
| CN1652239B true CN1652239B (en) | 2013-03-20 |
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| CN2005100082036A Expired - Fee Related CN1652239B (en) | 2000-11-22 | 2000-11-22 | Method for providing special information of program recorded on high-density CD medium |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000231758A (en) * | 1999-02-10 | 2000-08-22 | Toshiba Corp | Data storage device, recording method of ciphered data and recording medium |
| CN1271235A (en) * | 1999-02-23 | 2000-10-25 | 佳能株式会社 | Recording and reproducing device |
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2000
- 2000-11-22 CN CN2005100082036A patent/CN1652239B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000231758A (en) * | 1999-02-10 | 2000-08-22 | Toshiba Corp | Data storage device, recording method of ciphered data and recording medium |
| CN1271235A (en) * | 1999-02-23 | 2000-10-25 | 佳能株式会社 | Recording and reproducing device |
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| CN1652239A (en) | 2005-08-10 |
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