CN1158177A - Various recording/reproduction modes in recording/reproducing a digital information signal and at least one digital auxiliary signal - Google Patents
Various recording/reproduction modes in recording/reproducing a digital information signal and at least one digital auxiliary signal Download PDFInfo
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- CN1158177A CN1158177A CN 96190496 CN96190496A CN1158177A CN 1158177 A CN1158177 A CN 1158177A CN 96190496 CN96190496 CN 96190496 CN 96190496 A CN96190496 A CN 96190496A CN 1158177 A CN1158177 A CN 1158177A
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- track portion
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- digital information
- information signal
- signal
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1201—Formatting, e.g. arrangement of data block or words on the record carriers on tapes
- G11B20/1207—Formatting, e.g. arrangement of data block or words on the record carriers on tapes with transverse tracks only
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
- G11B15/087—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing recorded signals
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/036—Insert-editing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/107—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating tapes
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
- G11B27/3063—Subcodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
- H04N9/8211—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being a sound signal
- H04N9/8216—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being a sound signal using time division multiplex
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/032—Electronic editing of digitised analogue information signals, e.g. audio or video signals on tapes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/782—Television signal recording using magnetic recording on tape
- H04N5/7824—Television signal recording using magnetic recording on tape with rotating magnetic heads
- H04N5/7826—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape
- H04N5/78263—Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape for recording on tracks inclined relative to the direction of movement of the tape
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
An apparatus for recording a digital information signal in slant tracks on a longitudinal magnetic record carrier (10) is described. The apparatus is capable of recording a digital information signal and at least one digital auxiliary signal in a track. The apparatus comprises an input terminal (1) for receiving the digital information signal and an input terminal (2) for receiving the at least one digital auxiliary signal. Channel encoding means (6) are present for carrying out a channel encoding step on the digital information signal so as to obtain a channel encoded digital information signal. Writing means (8) are present for writing the channel encoded digital information signal and the digital auxiliary signal in a track. The apparatus is adapted to function in a first recording mode in which said channel encoded digital information signal is recorded in a first track portion (TP1) of the tracks and a second recording mode in which the apparatus is adapted to record the channel encoded digital information signal in a second track portion (TP2) of the tracks and the at least one digital auxiliary signal in a third track portion (TP3) in the tracks. The second and third track portions ly within said first track portions (TP1). More specifically, the second and third track portion in the track are separated by an edit gap, and the total length of the second and third track portion and the edit gap equal the length (L1) of the first track portion.
Description
The present invention relates to the equipment of digital information signal recording in the inclined track of longitudinal magnetic recording carrier, this equipment comprises:
One input end of-reception digital information signal,
One channel coding device is carried out the chnnel coding step to this digital information signal, with acquisition chnnel coding digital information signal,
-write device writes this chnnel coding digital information signal first track portion of magnetic track.The invention still further relates to the equipment that reproduces digital information signal from the inclined track of longitudinal magnetic recording carrier, this digital information signal is recorded in the magnetic track by the form with chnnel coding, and this equipment comprises
-read apparatus, from the first track portion read channel coding digital information signal of magnetic track,
-channel code translator is carried out the channel decoding step to this chnnel coding digital information signal, with the duplicate of acquisition digital information signal,
-output terminal of this duplicate of digital information signal is provided.
US Patent specification 5142421, it is the document D1 in the pertinent literature table that can find in the back, discloses the recording unit of above definition.
This known equipment with the data compression mode the digital information signal recording of digital video signal form in a part of magnetic track.Again digital audio and video signals is recorded in the other parts of magnetic track.For the present invention, the order that each several part appears in the magnetic track is not correlated with.
The purpose of this invention is to provide more general recording unit and reproducer.For this purpose, this recording unit has the advantages that to carry out work according to first recording mode and second recording mode, described chnnel coding digital information signal is recorded in first recording mode in described first track portion of magnetic track, this equipment is recorded in the chnnel coding digital information signal recording in the 3rd track portion of magnetic track in second track portion of magnetic track and digitally assisting signal in second recording mode, the second and the 3rd track portion is positioned at described first track portion, this equipment comprises second input end that is used to receive this digitally assisting signal, and this write device also is suitable for chnnel coding digital information signal and digitally assisting signal are write the described second and the 3rd track portion respectively.
This reproducer has the advantages that to carry out work according to first playback system and second playback system, described first track portion from magnetic track in first playback system reproduces described chnnel coding digital information signal, this equipment reproduces the chnnel coding digital information signal and reproduces digitally assisting signal from the 3rd track portion of magnetic track from second track portion of magnetic track in second playback system, the second and the 3rd track portion is positioned at described first track portion, this read apparatus also is suitable for respectively from the described second and the 3rd track portion read channel coding digital information signal and digitally assisting signal, and this equipment comprises second output terminal that this digitally assisting signal is provided.
Digital information signal can be the mpeg encoded information signal.The mpeg encoded information signal comprises transfer data packets, and these transfer data packets can occur in the serial data stream of the MPEG transport stream that is received brokenly.
The ISO/IEC 13.818 international standard part 1s of formulating on November 13rd, 1994 " system " (the document D2 in the pertinent literature table) comprise the explanation for the transfer system that transmits mpeg information signal, this mpeg information signal can comprise the digital video signal of data compression and the digital audio and video signals of corresponding data compression, so that broadcast or transmit by cable network.The mpeg information signal of transfer data packets form respectively comprises the information of 188 bytes.
Packet in the MPEG serial data stream also comprises a kind of information except that " system information ", that is: a part of vision signal or a part of sound signal or a part of data-signal.A plurality of vision signals and/or a plurality of sound signal and/or a plurality of data-signal can utilize the transfer data packets in the MPEG serial data stream to transmit.Packet also comprises only vision signal of utilizing that the MPEG serial data stream transmits or only sound signal or the only information of a data-signal.
Digitally assisting signal can be digital audio and video signals or digital data signal.In first recording mode, have only digital information signal to be recorded in first track portion of magnetic track.In second recording mode, not only digital information signal but also digitally assisting signal all " simultaneously " be recorded in this first track portion.
If equipment only has first and second recording modes, it just can also have such characteristics: promptly the second of magnetic track and the 3rd track portion is separated by an edit gap, and the total length of the second and the 3rd track portion and this edit gap is substantially equal to the length of first track portion.Specifically, this equipment is characterised in that: the 3rd track portion is positioned at before second track portion of magnetic track, and when the longitudinal direction of magnetic track was watched, the beginning of the beginning of the 3rd track portion that obtains in second recording mode and first track portion that obtains in first recording mode was basically at same position.
It all is possible advantage that equipment of the present invention has at least two kinds of recording modes.In first recording mode, equipment can be used to mpeg information stream is recorded in first track portion.Second recording mode can be used to write down the digital information signal than low bitrate.This digital information signal also can be a mpeg information signal, but quantity of information is lacked than the quantity of information of the mpeg information that writes down in first recording mode.The digital information signal that is recorded in second recording mode in second track portion can be the mpeg information signal that includes only video packets of data, and packets of audio data has been recorded in the 3rd track portion.So just can edit the audio-frequency information that is recorded in the 3rd track portion.
Equipment of the present invention has such advantage, promptly can also use signal processor memory, when carrying out signal Processing, digital information signal in first track portion needing the sort signal processor storage to being recorded in, it is enough big, can processing and information signal and auxiliary signal, so that in second recording mode, they are recorded in the second and the 3rd track portion.In addition, first track portion in first recording mode and the beginning of the 3rd track portion in second recording mode have such advantage in this fact of same position basically, promptly for these two kinds of recording modes, when when the longitudinal direction of magnetic track is watched, the first synchrodata word will appear at same position basically, so just simplified reproduction period synchronously, and therefore simplified reading of in two kinds of playback systems data.Also have,, just can edit the 3rd track portion more reliably in case determined the position of the 3rd track portion beginning rightly.
In another embodiment, this equipment has can be according to first recording mode, the characteristics that second recording mode and at least one the 3rd recording mode are carried out work, described chnnel coding digital information signal is recorded in first recording mode in described first track portion of magnetic track, this equipment is recorded in the chnnel coding digital information signal recording in described the 3rd track portion of magnetic track in described second track portion of magnetic track and first digitally assisting signal in second recording mode, the second and the 3rd track portion is positioned at described first track portion, this equipment in the 3rd recording mode the chnnel coding digital information signal recording in described second track portion of magnetic track, described first digitally assisting signal is recorded in described the 3rd track portion of magnetic track, and at least the second digitally assisting signal is recorded in the 4th track portion of magnetic track, second, third and fourth track portion is positioned at described first track portion, this equipment comprises the 3rd input end that is used to receive this second digitally assisting signal at least, and this write device also is suitable for the chnnel coding digital information signal, first and second digitally assisting signals write described second respectively, third and fourth track portion.So just realized two or more auxiliary signals are carried out record with digital information signal.These auxiliary signals can be the sound signals of two or more voice.When original sound signal being recorded in the 3rd track portion and being recorded in the people's who sings Karaoke song in the 4th track portion according to edit mode, the 3rd recording mode can also be played Karaoka.
The characteristics of reproducer are limited by the claim of describing this reproducer.
Should be pointed out that document D3 in the pertinent literature table, be that the 10th chapter of the works " art of DAB " of John Watkinson has been described 8 millimeters video systems.The equipment of 8 millimeters video type has dual mode.In first mode, analog video signal is recorded in first track portion of magnetic track, and the pcm audio signal is recorded in second track portion of magnetic track.In second recording mode, first track portion also can be used to write down the pcm audio signal.In this so-called " only audio frequency mode ", make six records along the direction that replaces, form six different Time Compression audio data section of each 36 degree.But have only a sound signal to be recorded.
To come into plain view to these and other characteristic of the present invention referring to the embodiment that in the following drawings explanation, describes, in the accompanying drawing:
Fig. 1 represents an embodiment of recording unit,
Three kinds of track formats that recording unit obtained of Fig. 2 presentation graphs 1 at (a) and (b) with (c), and
Fig. 3 represents an embodiment of reproducer.
Fig. 1 represents the schematic circuit diagram of recording unit of the present invention.This recording unit comprises first input end 1 that receives digital information signal and second input end 2 that receives digitally assisting signal.First input end 1 is connected with the first input end 7 of traffic pilot 4.Second input end 2 is connected with second input end 9 of traffic pilot 4.The output terminal of traffic pilot 4 is connected with the input end of channel encoder 6.The output terminal of channel encoder 6 is connected with the input end of record cell 8.The chnnel coding information of utilizing rotary head device 12 well-known in the art that chnnel coding unit 6 is provided is recorded in the inclined track (not shown) of magnetic recording medium 10.Provide CPU (central processing unit) 14 to control the operation of this recording unit.This processor unit 14 has the input end 16 that receive mode is selected control signal.The switch (not shown) that this mode selects signal can utilize the user to start produces.The output terminal of processor 14 is connected with the control input end 18 of traffic pilot unit 4.Because the control of 14 pairs of traffic pilot unit 4 of processing unit is relevant with the following invention that will describe, so will only describe to this control function.
As mentioned above, the digital information signal that offers terminal 1 can be the mpeg encoded information signal.The record of this mpeg encoded information signal is to be that the U.S. Patent application the 08/225 No. 193 (the document D4 in the pertinent literature table) and date of application on April 8th, 94 (PHN 14.818) is the theme of the U.S. Patent application No. 08/253535 (the document D5 in the pertinent literature table) on June 3rd, 94 (PHA 21.886) date of application of previous application.Digitally assisting signal can be (n additional) digital audio and video signals or a digital data signal.
Equipment shown in Figure 1 has first mode of operation of being selected by the user, and this equipment can be the digital information recording that offers input end 1 on record carrier 10 in this mode.4 pairs of control signals that offer input end 18 of traffic pilot respond, and only the information signal that utilizes its first input end 7 to receive are sent to its output terminal.The formed track format of recording operation of (a) expression first recording mode of Fig. 2.The left end of magnetic track shown in Figure 2 is the beginning of magnetic track, and the right-hand member of magnetic track is the latter end of magnetic track.Magnetic track in Fig. 2 (a) comprises some track portions.Track portion shown in the G1 is the preamble track portion.This preamble track portion comprises can be made when reproducing afterwards with the blocked particular code word of reproduction electronic circuit in the reproducer of describing.Document D6 in the pertinent literature table has carried out describing completely to the example of preamble track portion.
After the track portion G1 is track portion " SUB ".This track portion comprises sub-code information, for example absolute and/or relative time information and contents table, and they all are well-known in the prior art.Be edit gap G2 then, it can comprise with the preamble track portion in the identical coded word of coded word.After the edit gap G2 is track portion TP1 (first track portion), and the digital information signal that offers input end 1 can be stored among this track portion TP1 after having been carried out chnnel coding by scrambler 6.Digital information signal is carried out chnnel coding be well known in the art, so do not need to further specify.The last track portion of magnetic track is back timing track part G3, it can comprise with preamble part G1 in the identical coded word of coded word.Track portion TP1 has the length L 1 of regulation, can represent this length L 1 with the byte number among the track portion TP1 that is stored in magnetic track.
Equipment shown in Figure 1 has at least can be by second mode of operation of user's selection.This equipment can be recorded in numerical information that offers input end 1 and the auxiliary signal that offers terminal 2 on the record carrier 10 in first mode of operation.The control signal that offers input end 18 is responded, and traffic pilot 4 alternately sends information signal that utilizes its first input end 7 to receive and the auxiliary signal that offers its input end 9 to its output terminal now.The formed track format of recording operation of (b) expression second recording mode of Fig. 2.Magnetic track in Fig. 2 (b) comprises some track portions.The track portion of representing with G1 is the preamble track portion that comprises the particular code word as mentioned above equally.
After the track portion G1 is track portion " SUB " and edit gap G2 equally.Be provided with track portion TP3 (the 3rd track portion) then and replace track portion TP1, at this moment auxiliary signal also is to be stored in after having carried out chnnel coding among this track portion TP3.Be edit gap G4 then, it can comprise with the preamble track portion in the identical coded word of coded word.After the edit gap G4 is track portion TP2 (second track portion), and the digital information signal that offers input end 1 can be stored among this track portion TP2 after having been carried out chnnel coding by scrambler 6.The last track portion of magnetic track is back timing track part G3 equally.Track portion TP2, G4 that represents with byte number and the pattern length of TP3 equal the length L 1 of the track portion TP1 among (a) of Fig. 2.
Equipment shown in Figure 1 can also have can be by the 3rd mode of operation of user's selection.This equipment can be recorded in (see figure 1) on the record carrier 10 to the numerical information that offers input end 1, second digitally assisting signal that offers first digitally assisting signal of terminal 2 and offer additional input end 3 in this mode of operation.The control signal that offers input end 18 is responded, and traffic pilot 4 alternately sends the information signal that utilizes its first input end 7 to receive, second auxiliary signal that offers first auxiliary signal of its input end 9 and offer its input end 11 to its output terminal now.The formed track format of recording operation of (c) expression the 3rd recording mode of Fig. 2.Magnetic track in Fig. 2 (c) comprises some track portions.The track portion of representing with G1 is the preamble track portion that comprises the particular code word as mentioned above equally.
After the track portion G1 is track portion SUB and G2.Be track portion TP3 (the 3rd track portion) then, at this moment the first auxiliary signal AUX1 is stored in after having carried out chnnel coding among this track portion TP3.Being edit gap G4 then equally, is track portion TP4 now after it, and at this moment the second auxiliary signal AUX2 is recorded in after having carried out chnnel coding among this track portion TP4.After the track portion TP4 is edit gap G5, and it can comprise the coded word that also is stored in other edit gap equally.The back of this edit gap G5 is track portion TP2 ' (second track portion), and the digital information signal that offers input end 1 can be stored among this track portion TP2 ' after having been carried out chnnel coding by scrambler 6.The last track portion of magnetic track is back timing track part G3 equally.The pattern length of track portion TP2 ', TP3, G4, TP4 and the G5 that represents with byte number equals the length L 1 of the track portion TP1 among (a) of Fig. 2.
Fig. 3 represents to be used to reproduce the embodiment by the reproducer of the information of the equipment records of Fig. 1 on record carrier 10.This equipment comprises the reproduction units 30 spiral scan type, that be used for reading from the magnetic track of record carrier 10 this information.The output terminal of this unit 30 is connected with the input end of channel decoding unit 32, and this channel decoding unit 32 has the output terminal that is connected with the input end of demultiplexer 34.This demultiplexer 34 has signal input end 36 and first and second output terminals 38 and 40.Output terminal 38 is connected with 44 with output terminal 42 respectively with 40.This equipment also has CPU (central processing unit) 46, and it has for example to be used to receive selects the mode of signal to select input end 48 by the mode that is produced by the switch (not shown) of the user of this equipment startup.Control signal is produced by this processing unit 46 and offers output terminal 50, and this output terminal is connected with the signal input end 36 of demultiplexer 34.
Equipment shown in Figure 3 has first mode of operation of being selected by the user, and this equipment can reproduce the numerical information that is recorded on this record carrier from record carrier in this mode shown in Fig. 2 (a).34 pairs of control signals that offer input end 36 of demultiplexer respond, and only the information signal that utilizes its input end 33 to receive are sent to its output terminal 38.
Equipment shown in Figure 3 has at least can be by second mode of operation of user's selection.This equipment can reproduce in this mode of operation according to digital information signal and the auxiliary signal of format record on record carrier shown in Fig. 2 (b).The control signal that offers input end 36 is responded, and demultiplexer 34 sends this information signal to its first output terminal 38 now, and this auxiliary signal is sent to its output terminal 40.
Equipment shown in Figure 3 can also have can be by the 3rd mode of operation of user's selection.This equipment can reproduce in this mode of operation according to digital information signal and first and second digitally assisting signals of the format record shown in Fig. 2 (c) on record carrier.The control signal that offers input end 36 is responded, and demultiplexer 34 sends this information signal to its first output terminal 38 now, and this first auxiliary signal is sent to its output terminal 40, and this second auxiliary signal is sent to its output terminal 43.
Should be pointed out that the control signal of selecting record or playback system is not that must be produced by the user can not.Recording unit can be determined the bit rate of the digital information signal that received.When bit rate was low, equipment can determine to switch to second recording mode, if bit rate is higher, just decision switches to first recording mode.Another kind may be that the information that recording unit receives can comprise control signal, only the information signal that is received is marked as digital information signal, needs first recording mode, perhaps the information that is received is marked as to comprise digital information signal and auxiliary signal.
In addition, the control signal of the recording mode that recording unit can also adopt showing is inserted in the information that is recorded on the record carrier and goes, as is recorded in the sub-code information in the track portion of representing with SUB.
Reproducer can determine that in the same way any record carrier is reproduced.Be that record carrier is the record carrier that meets the form shown in (a) of Fig. 2, still meet (b) of Fig. 2 or (c) shown in the record carrier of form.Perhaps, reproducer can detect and be inserted into the control signal of going in the signal that is recorded, for example is recorded among the subcode track portion SUB.
Pertinent literature
(D1) United States Patent (USP) 5142421 (PHN 13.537)
(D2) ISO/IEC 13.818 international standards, part 1 " system ", on November 13rd, 1994.
(D3) " art of DAB " the 10th chapter, J.Watkinson work,, Focal publishing house in 1988.
(D4) No. 08/225193, U.S. Patent application, applies on April 8th, 94.
(D5) U.S. Patent application 08.253 535, June 3 94 year applying date (PHA21.886)
(D6) European application 492.704 (PHN 13.546)
Claims (10)
1. the equipment of digital information signal recording in the inclined track of longitudinal magnetic recording carrier, this equipment comprises:
One input end of-reception digital information signal,
-channel coding device is carried out the chnnel coding step to this digital information signal, with acquisition chnnel coding digital information signal,
-write device, this chnnel coding digital information signal is write first track portion of magnetic track, this equipment is characterised in that: it can carry out work according to first recording mode and second recording mode, described chnnel coding digital information signal is recorded in first recording mode in described first track portion of magnetic track, this equipment is recorded in the chnnel coding digital information signal recording in the 3rd track portion of magnetic track in second track portion of magnetic track and digitally assisting signal in second recording mode, the second and the 3rd track portion is positioned at described first track portion, this equipment comprises second input end that is used to receive this digitally assisting signal, and this write device also is suitable for chnnel coding digital information signal and digitally assisting signal are write the described second and the 3rd track portion respectively.
2. the equipment of claim 1 is characterized in that the second and the 3rd track portion of magnetic track is separated by an edit gap, is that also the total length of the second and the 3rd track portion and this edit gap is substantially equal to the length of first track portion.
3. claim 1 or 2 equipment, it is characterized in that the 3rd track portion is positioned at before second track portion of magnetic track, be also that when when the longitudinal direction of magnetic track is watched the beginning of the beginning of the 3rd track portion that obtains and first track portion that obtains is basically at same position in first recording mode in second recording mode.
4. the equipment of claim 1, it is characterized in that this equipment can be according to first recording mode, second recording mode and at least one the 3rd recording mode are carried out work, described chnnel coding digital information signal is recorded in first recording mode in described first track portion of magnetic track, this equipment is recorded in the chnnel coding digital information signal recording in described the 3rd track portion of magnetic track in described second track portion of magnetic track and first digitally assisting signal in second recording mode, the second and the 3rd track portion is positioned at described first track portion, this equipment in the 3rd recording mode the chnnel coding digital information signal recording in described second track portion of magnetic track, described first digitally assisting signal is recorded in described the 3rd track portion of magnetic track, and at least second digitally assisting signal is recorded in the 4th track portion of magnetic track, second, third and fourth track portion is positioned at described first track portion, this equipment comprises that at least one is used to receive the 3rd input end of this second digitally assisting signal, and this write device also is suitable for the chnnel coding digital information signal, first and second digitally assisting signals write described second respectively, third and fourth track portion.
5. the equipment of claim 4 is characterized in that second, third and the 4th track portion of magnetic track separated by an edit gap, is that also total length of second, third and the 4th track portion and these edit gaps is substantially equal to the length of first track portion.
6. reproduce the equipment of digital information signal from the inclined track of longitudinal magnetic recording carrier, this digital information signal is recorded in the magnetic track by the form with chnnel coding, and this equipment comprises:
-read apparatus, from the first track portion read channel coding digital information signal of magnetic track,
-channel code translator is carried out the channel decoding step to this chnnel coding digital information signal, obtaining the duplicate of this digital information signal,
-output terminal of this duplicate of this digital information signal is provided, this equipment is characterised in that: it can carry out work according to first playback system and second playback system, described first track portion from magnetic track in first playback system reproduces described chnnel coding digital information signal, this equipment reproduces the chnnel coding digital information signal and reproduces digitally assisting signal from the 3rd track portion of magnetic track from second track portion of magnetic track in second playback system, the second and the 3rd track portion is positioned at described first track portion, this read apparatus also is suitable for respectively from the described second and the 3rd track portion read channel coding digital information signal and digitally assisting signal, and this equipment comprises second output terminal that digitally assisting signal is provided.
7. the equipment of claim 6 is characterized in that the second and the 3rd track portion of magnetic track is separated by an edit gap, is that also the total length of the second and the 3rd track portion and this edit gap is substantially equal to the length of first track portion.
8. claim 6 or 7 equipment, it is characterized in that the 3rd track portion is located at before second track portion of magnetic track of the record carrier that uses in second playback system, be also that when when the longitudinal direction of magnetic track is watched the beginning of the beginning of the 3rd track portion and first track portion of the magnetic track of the record carrier that uses is basically at same position in first playback system.
9. the equipment of claim 6, it is characterized in that this equipment can be according to first playback system, second playback system and at least one the 3rd playback system carry out work, described first track portion from magnetic track in first playback system reproduces described chnnel coding digital information signal, this equipment reproduces the chnnel coding digital information signal and reproduces first digitally assisting signal from described the 3rd track portion of magnetic track from described second track portion of magnetic track in second playback system, the second and the 3rd track portion is positioned at described first track portion, this equipment described second track portion from magnetic track in the 3rd playback system reproduces channel-encoded data compressed digital information signal, reproduce described first digitally assisting signal from described the 3rd track portion of magnetic track, and reproduce at least the second digitally assisting signal from the 4th track portion of magnetic track, second, third and fourth track portion is positioned at described first track portion, this write device also is suitable for respectively from described second, the third and fourth track portion read channel coding digital information signal and first and second digitally assisting signals, this equipment comprise that at least one is used to provide the 3rd output terminal of second digitally assisting signal.
10. the equipment of claim 9 is characterized in that second, third and the 4th track portion of magnetic track separated by an edit gap, is that also total length of second, third and the 4th track portion and these edit gaps is substantially equal to the length of first track portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95200847 | 1995-04-04 | ||
| EP95200847.2 | 1995-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1158177A true CN1158177A (en) | 1997-08-27 |
Family
ID=8220166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96190496 Pending CN1158177A (en) | 1995-04-04 | 1996-03-13 | Various recording/reproduction modes in recording/reproducing a digital information signal and at least one digital auxiliary signal |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0764326A2 (en) |
| JP (1) | JPH10501947A (en) |
| CN (1) | CN1158177A (en) |
| TW (1) | TW412731B (en) |
| WO (1) | WO1996031879A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6078448A (en) * | 1997-01-21 | 2000-06-20 | U.S. Philips Corporation | Recording of subcode signals in slant tracks on a record carrier |
| TW417089B (en) * | 1998-02-11 | 2001-01-01 | Koninkl Philips Electronics Nv | Reproduction of a digital information signal in a trick play reproduction mode |
| KR100385049B1 (en) * | 2001-01-17 | 2003-05-23 | 삼성전자주식회사 | Digital magnetic recorder/player capable of recording/playing a plurality of sorts of audio data and a recording/playing method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2220521B (en) * | 1988-06-07 | 1993-04-28 | Mitsubishi Electric Corp | Digital signal recording method a digital video tape recorder and a recorded tape |
| NL9002772A (en) * | 1990-09-21 | 1992-04-16 | Philips Nv | DEVICE FOR RECORDING A DIGITAL INFORMATION SIGNAL IN A RECORD CARRIER. |
| NL9002839A (en) * | 1990-12-21 | 1992-07-16 | Philips Nv | DEVICE FOR RECORDING "CLOCK RUN-IN" CODE WORDS AT THE BEGINNING OF A TRACK ON A MAGNETIC RECORD CARRIER. |
| US5579183A (en) * | 1994-04-08 | 1996-11-26 | U.S. Philips Corporation | Recording and reproducing an MPEG information signal on/from a record carrier |
-
1996
- 1996-03-13 CN CN 96190496 patent/CN1158177A/en active Pending
- 1996-03-13 WO PCT/IB1996/000208 patent/WO1996031879A2/en not_active Application Discontinuation
- 1996-03-13 EP EP96904220A patent/EP0764326A2/en not_active Withdrawn
- 1996-03-13 JP JP8530137A patent/JPH10501947A/en active Pending
- 1996-03-20 TW TW85103360A patent/TW412731B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996031879A3 (en) | 1997-01-03 |
| TW412731B (en) | 2000-11-21 |
| EP0764326A2 (en) | 1997-03-26 |
| JPH10501947A (en) | 1998-02-17 |
| WO1996031879A2 (en) | 1996-10-10 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |