CN1220801A - Recording of trick play signals on record carrier - Google Patents

Recording of trick play signals on record carrier Download PDF

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Publication number
CN1220801A
CN1220801A CN199898800366A CN98800366A CN1220801A CN 1220801 A CN1220801 A CN 1220801A CN 199898800366 A CN199898800366 A CN 199898800366A CN 98800366 A CN98800366 A CN 98800366A CN 1220801 A CN1220801 A CN 1220801A
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CN
China
Prior art keywords
synchronization blocks
play
special play
signal
trick play
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Pending
Application number
CN199898800366A
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Chinese (zh)
Inventor
A·M·A·赖克尔特
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Koninklijke Philips NV
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Koninklijke Philips Electronics NV
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Publication of CN1220801A publication Critical patent/CN1220801A/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
    • G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks
    • G11B5/00865—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks for transducing on more than one segment simultaneously
    • 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
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G11B15/125—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams conditioned by the operating function of the apparatus
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/4673—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating
    • G11B15/4675—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating with provision for information tracking
    • G11B15/4676—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating with provision for information tracking using signals recorded in tracks disposed in parallel with the scanning direction
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/4673—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating
    • G11B15/4675—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating with provision for information tracking
    • G11B15/4676—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating with provision for information tracking using signals recorded in tracks disposed in parallel with the scanning direction
    • G11B15/4677—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the tape while the head is rotating with provision for information tracking using signals recorded in tracks disposed in parallel with the scanning direction using auxiliary signals, i.e. pilot signals
    • 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
    • G11B20/1208—Formatting, e.g. arrangement of data block or words on the record carriers on tapes with transverse tracks only for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
    • 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
    • G11B20/1209—Formatting, e.g. arrangement of data block or words on the record carriers on tapes with transverse tracks only for discontinuous data, e.g. digital information signals, computer programme data
    • 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
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
    • G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
    • G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
    • G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • 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
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate
    • 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
    • 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
    • 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
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • 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
    • H04N9/8227—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 at least another television signal

Abstract

A format for the recording of trick play signals is proposed in which trick play segments comprising sync blocks of information of a trick play signal are recorded in groups of p successive tracks. At least first and second trick play signals are recorded on the record carrier. The first trick play signal is meant for reproduction in a reproduction apparatus at a reproduction speed n1 times the recording speed with which the trick play signal are recorded on the record carrier. The second trick play signal is meant for reproduction in the said reproduction apparatus at a reproduction speed n2 times the recording speed. Both trick play signals are recorded such that upon reproduction at said speed n1 times the recording speed m1 sync blocks of information of the first trick play signal and m1 sync blocks of the second trick play signal are read from the record carrier during one revolution of the head drum in the reproduction apparatus.

Description

Recording of trick play signal on record carrier
The present invention relates to a kind of device that is used for inclined plane record first and second digital information signals on magnetic recording medium, this device comprises
The input unit of first, second digital information signal of-reception,
-first, second digital signal is processed into the signal processing apparatus of first, second stunt (trick) play signal that is fit to be recorded in the track respectively,
-write first with the writing speed of record carrier, second trick play signal so that obtain is arranged in the write device of special play-back section of the ad-hoc location of described track, write device comprises first and second write heads that are positioned on the rotary head drum at least, the gap of first stature has the first party parallactic angle, the gap of second stature has the second party parallactic angle that is different from the first party parallactic angle, first digital information signal is used to make replay device to reset to equal writing speed n1 special play-back playback speed doubly, second digital information signal is used to make above-mentioned replay device to reset to equal writing speed n2 special play-back playback speed doubly, here, n1 and n2 are unequal mutually and are to be not equal to 0 and 1 integer.A kind of like this tape deck from WO 95/28061 (pertinent literature tabulation document 4) as can be known.
What existing device adopted is the form of digital video recorder, is used for recording digital video signals.Digital video signal can be the vision signal of mpeg encoded form, and wherein the packets of information of digital video signal is organized into continuous mpeg coded video signal data stream.Except this mpeg coded video signal, can also be in the track of recording medium recording of trick play signal.This trick play signal can be identical with vision signal, but record carrier (special play-back) speed playback to be different from the nominal playback speed.Usually, independent digital stream is recorded on the record carrier as trick play signal, makes it possible to reset with such trick play speed.Trick play signal can obtain from the mpeg coded video signal, as extract the I frame from the mpeg coded video signal.
Yet this trick play signal is not certain and the mpeg coded video signal has certain relation, may be a kind of diverse signal.But identical with the mode of the vision signal of mpeg encoded, continuous trick play signal data flow has comprised the packets of information of trick play signal.
Above mentioned file description the message segment of a large amount of trick play signals is recorded in the track of record carrier.The message segment of specific trick play signal is arranged in the ad-hoc location of track, so that can be with corresponding special play-back playback speed playback trick play signal.
The objective of the invention is to propose a kind of improved tape deck, be used for a large amount of trick play signals being recorded in record carrier according to specific form.
According to tape deck of the present invention, it is characterized in that first, second trick play signal comprises first respectively, the synchronous information block of second digital information signal, and write device is fit to the synchronization blocks of first trick play signal is write in the first special play-back section, the synchronization blocks of second trick play signal is write in the second special play-back section, thereby in replay device, can with n1 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of magnetic drum, from the first special play-back section, read m1 sync section of first trick play signal, and make with n2 doubly to the trick play speed playback time of writing speed, can in a rotation period process of rotary head drum, from the second special play-back section, read m1 sync section of second trick play signal, this replay device has the reading device that reads the first and second special play-back sections, reading device comprises first and second read heads that are positioned on the rotary head drum at least, the azimuth in the first read head gap and above-mentioned first party parallactic angle are basic identical, the azimuth in the second read head gap and above-mentioned second party parallactic angle are basic identical, here, m1 is the integer greater than 1.(v=+4x?en?v=-4x,v=+12x?en?v=-12x,v=+24x?en?v=-24x)。
The present invention is based on following understanding, promptly utilize this mode, can read the identical sync section of quantity with at least two kinds of different special play-back replay modes, for example speed is greater than writing speed, the special play-back replay mode that moves forward and backward.The invention enables and to take other method,,, promptly determine the position of special play-back section best along the scan line of read head as resetting very reliably with the special play-back replay mode so that obtain other various advantages.Can obtain best reliability, prevent trail-and-error and lose synchronization blocks.In addition, can realize surveying best the subcode information that the subcode zone stores.
After the embodiment of describing in reference to following description of drawings, these and other aspect of the present invention will be illustrated.In description of drawings,
Fig. 1 is one group of track format (wherein P equals 48) in the P track, and in the first special play-back replay mode walking path of two reproducing heads on record carrier, here the speed of record carrier be datum speed+4 times,
Fig. 1 a is in the track groups of 48 tracks ,+4 times of special play-back sections under the replay mode of datum speed,
Fig. 2 is the content of a track on the record carrier,
Fig. 3 is identical with the form of Fig. 1, is the walking path of two reproducing heads on record carrier in the second special play-back replay mode, and the speed of record carrier is-4 times of datum speed here,
Fig. 3 a is in the track groups of 48 tracks ,-4 times of special play-back sections under the replay mode of datum speed,
Fig. 4 is identical with the form of Fig. 1, is the walking path of two reproducing heads on record carrier in the 3rd special play-back replay mode, here the speed of record carrier be datum speed+12 times,
Fig. 4 a is in the track groups of 48 tracks ,+12 times of special play-back sections under the replay mode of datum speed,
Fig. 5 is identical with the form of Fig. 1, is the walking path of two reproducing heads on record carrier in the 4th special play-back replay mode, and the speed of record carrier is-12 times of datum speed here,
Fig. 5 a is in the track groups of 48 tracks ,-12 times of special play-back sections under the replay mode of datum speed,
Fig. 6 is identical with the form of Fig. 1, is the walking path of two reproducing heads on record carrier in the 5th special play-back replay mode, here the speed of record carrier be datum speed+24 times,
Fig. 6 a is in the track groups of 48 tracks ,+24 times of special play-back sections under the replay mode of datum speed,
Fig. 7 is identical with the form of Fig. 1, is the walking path of two reproducing heads on record carrier in the 6th special play-back replay mode, and the speed of record carrier is-24 times of datum speed here,
Fig. 7 a is in the track groups of 48 tracks ,-24 times of special play-back sections under the replay mode of datum speed,
Fig. 8 is the form of synchronization blocks,
Fig. 9 is the form of the datagram header part in Fig. 8 synchronization blocks,
Figure 10 is two continuous synchronization blocks that wherein stored a MPEG bag,
Figure 11 is the content of MPEG bag datagram header in first pieces of two continuous synchronization blocks of Figure 10, and this MPEG bag datagram header comprises two time tags,
Figure 12 is the content of MPEG bag datagram header in two continuous special play-back synchronization blocks of Figure 10, and this MPEG bag datagram header comprises the time tag of the bag of the special play-back data flow that MPEG wraps,
Figure 13 is an embodiment according to tape deck of the present invention,
Figure 14 is an embodiment of the time mark generator in Figure 13 device, and
Figure 15 is an embodiment of replay device.
Fig. 1 shows the track format that is recorded in the track on the record carrier 1.These tracks write down with the inclination angle certain with respect to vertical one-tenth of record carrier.Yet in Fig. 1, for clarity sake, track is expressed as the angle with vertical quadrature of record carrier 1.The distinguishable p of a going out group that continuous track constitutes on record carrier 1.Fig. 1 shows the such group that is made of p continuous track, and in this example, p equals 48.In the recording/reproducing process, the track among Fig. 1 by from bottom to top, direction from left to right is by Writing/Reading.
The group that 48 continuous tracks have been arranged can be with following numeral as trick play speed: 2x, 3x, 4x, 6x, 8x, 12x and 24x.Two minimum trick play speed need a large amount of special play-back data.In addition, the preferential selection is the trick play speed of integer multiple each other.Trick play speed is not that 4x, 12x, 24x are exactly 6x, 12x, 24x as a result.Below, the situation that trick play speed is set to 4x, 12x, 24x and inverted speed thereof further is discussed.
Fig. 2 shows the form of a track.This track is by from left to right direction record with read among the figure.In this example, the length of each rail portion is represented with the quantity of main synchronization blocks among Fig. 2, and the length of main synchronization blocks is 112 bytes here, and each byte has 8.
At first, the clock insertion portion 2 of record expression " edge " is two synchronous block lengths of master in this example.Next be guide's part 3 of 3 synchronous block lengths of master.The back of guide's part 3 is subcode signal recording sections 4, and length is 4 main synchronization blocks.Subcode signal recording section 4 is used for writing down therein subcode signal.Subcode signal can comprise absolute and/or relative time information and contents table.
And then be exactly 5, one 3 synchronous block lengths of master of rearmounted part of 3 synchronous block lengths of master below, with the edit gap 6 of " IBG " expression, and one be guide's part 7 of 1 synchronous block length of master in this example.Next be exactly an auxiliary signal recording section 8, with " AUX " expression, length is 23 main synchronization blocks.Auxiliary signal recording section 8 is used to write down auxiliary signal, gives an example, as text data.Auxiliary signal recording section 8 back be exactly length be the rearmounted part 9 of 2 main synchronization blocks, with " IBG " expression, length is the edit gap 10 of 3 main synchronization blocks, and guide's part 11 that length is 1 main synchronization blocks.Next be that length is 307 main synchronization blocks with the information signal recording part 12 of " main-data area " expression.Information signal recording part 12 is used for digital-information recording signal therein.Digital information signal can be digital video signal and/or digital audio and video signals, and this signal can be encoded into mpeg information signal.In addition, can comprise the special play-back data in the information signal recording part 12.Void is want information signal recording part 12 is divided into two parts, and length is the 12a of first of 277 main synchronization blocks and the second portion 12b of 30 synchronization blocks.Second portion 12b comprises the external ECC parity information.
Information signal recording part 12 back are rearmounted part 13 and another " edge " parts of two synchronous block lengths of master, and its length is irrelevant, but illusory in this example be 2 synchronous block lengths of master.Like this, this track comprises 356 synchronization blocks altogether.
Should be understood that, in view of in another kind of logging mode, do not write down auxiliary signal in the track, and recording section 8, comprise that part 9,10,11 is added in the information signal recording part 12 and has been full of main information, but without any the special play-back data, therefore, auxiliary signal recording section 8 is optional.
Get back to Fig. 1, the content of the 12a of first of descriptor signal record part 12.Fig. 1 shows the track that utilizes first and second write heads record at least.The gap of first stature has the first party parallactic angle, and the gap of second stature has the second party parallactic angle that is different from the first party parallactic angle.Utilizing the track of first write head record to represent to the oblique line in the upper right corner with the lower left corner from figure, utilize the track of second write head record to represent to the oblique line in the upper left corner with the lower right corner from figure, is 20 circle referring to label among Fig. 1.
The first information signal that may comprise the packets of information of mpeg transport stream is recorded in the track, more particularly, is recorded in the information signal recording part 12 of track.In an embodiment of tape deck, this device is the digital VTR form of helical scan type, first information signal can be for being recorded in " normal play " data in the track, be used for replay device with the identical record carrier speed playback of record carrier speed in the recording process.This speed is defined as nominal record carrier speed.First information signal is included in the main synchronization blocks defined above.
In addition, second information signal is recorded in the particular segment of track.These sections are with label 22.i (+4) expression in Fig. 1, and i from 1 to 22 here.Second information signal is used for resetting at replay device with the playback speed that is four times in the nominal playback speed forward.Second information signal can be and the irrelevant information signal of the first information signal of introducing above.Second information signal also may have certain relation with first information signal, because second information signal is the trick play signal that is four times in the nominal playback speed, in order to (video) signal that obtains to reset, this signal is the copy of first (video) signal of playback, but it is reset forward to be four times in datum speed.
Fig. 1 a shows the group that 48 tracks identical with Fig. 1 constitute, yet, only show 12 section 22.i (+4) among Fig. 1 a.The orbit number of first track in the group of illusory 48 tracks is that the orbit number of last track in track 0 and the track groups is a track 47, and these sections just are recorded in the track that orbit number is 2+n.8 and 5+n.8 so, and n is from 0 to 5 integer here.
Fig. 1 also shows four scan lines 24.1,24.2,26.1 and 26.2.Double-head arrow scan line 24.1,24.2 shows in two rotation periods of magnetic drum, has stature track route on record carrier under the pattern that is four times in the nominal playback speed of first party parallactic angle.Single arrow scan line 26.1 and 26.2 shows in these two rotation periods of magnetic drum, has another stature track route on record carrier under the pattern that is four times in the nominal playback speed of second party parallactic angle.As can be seen from Figure 1, a stature reads wherein that i is the special play-back section 22.i (+4) of odd number, and another stature reads then wherein that i is even number special play-back section 22.i (+4).
In this example, each special play-back section 22.i (+4) is (m 1/ 2=) 50 synchronous block lengths of master.In these 50 main synchronization blocks of a section, the information content of 45 synchronization blocks is about being stored in the trick play signal in these synchronization blocks, and these synchronization blocks may comprise " void " synchronization blocks, and this will illustrate afterwards.Other five synchronization blocks in the section comprise carries out the parity information that obtains in the step of ECC coding to special play-back information.Like this, in each rotation period of magnetic drum, in a replay mode that is four times in datum speed, 100 synchronous information blocks of second information signal comprise 10 10 synchronization blocks that contain parity information, are read out from record carrier.
Main synchronization blocks in giving track is from 0, it is first synchronization blocks open numbering in the auxiliary record zone of track, until 305, when being last synchronization blocks of regional 12a of track, synchronization blocks (i is an even number) among the section 22.i (+4) is the synchronization blocks of numbering from 87 to 136 (containing) in the track, here, the synchronization blocks of numbering from 132 to 136 (containing) is the synchronization blocks that comprises parity information.In addition, the synchronization blocks (i is an odd number) among the section 22.i (+4) is the synchronization blocks of numbering from 206 to 255 (containing) in the track, and here, the synchronization blocks of numbering from 251 to 255 (containing) is also for comprising the synchronization blocks of parity information.Here should be pointed out that the special play-back synchronization blocks to be called " synchronization blocks numbering " herein, these numberings with after this identical special play-back synchronization blocks is called and is expressed as " special play-back synchronization blocks numbering " difference.
Fig. 1 a further shows some the track lower edge of track groups that is arranged in 48 tracks and constitutes, the part that is numbered 22.13 (+4) to 22.18 (+4).In this example, these parts can read with one of two statures under the replay mode of datum speed at+4 times, and this head has the first party parallactic angle.When shown in position when comprising the subcode signal recording section, also may be+4 times of information that under the replay mode of datum speed, read in the subcode signal recording section.
Fig. 3 shows the 3rd information signal in the particular segment that is recorded in track.Represent these sections with label 28.i (4) among Fig. 3, i from 1 to 24 here.The 3rd information signal is used for resetting at replay device with the playback speed that is four times in the nominal playback speed backward.The 3rd information signal may for the irrelevant information signal of above-mentioned first and/or second information signal.In view of the 3rd information signal is the trick play signal that is four times in the broadcast of nominal playback speed with negative, in order to obtain (video) signal of resetting, the 3rd information signal also may be relevant with first information signal, this signal is the copy of first (video) signal after resetting, but it is with the negative speed playback that is four times in datum speed (oppositely).
Fig. 3 a shows identical with Fig. 3 track groups that is made of 48 tracks, yet Fig. 3 a only shows 24 section 28.i (4).First track in the track groups that illusory 48 tracks constitute be numbered track 0, last track be numbered track 47, these sections just are recorded in the track that orbit number is 1+n.8,3+n.8,4+n.8 and 6+n.8 so, and n is the integer of from 0 to 5 (containing) here.
Fig. 3 also shows 4 scan lines 30.1,30.2,32.1,32.2.Double-head arrow scan line 30.1,30.2 shows in two rotation periods of magnetic drum, and the stature with first party parallactic angle is being born the track route on record carrier under the pattern that is four times in the nominal playback speed.Single arrow scan line 32.1 and 32.2 shows in these two rotation periods of magnetic drum, and another stature with second party parallactic angle is being born the track route on record carrier under the pattern that is four times in the nominal playback speed.As can be seen from Figure 3, one stature reads special play-back section 28.i (4), wherein i equals 3,4,7,8,11,12,15,16,19,20,23 and 24, another stature then reads special play-back section 28.j (4), and wherein j equals 1,2,5,6,9,10,13,14,17,18,21 and 22.
Each special play-back section 28.i (4) is 25 synchronous block length (m of master 1/ 4).The special play-back section of playing with negative four times trick play speed or comprise that 22 information contents are synchronization blocks and three the parity information synchronization blocks about being stored in the trick play signal in these synchronization blocks comprises that perhaps 23 information contents are synchronization blocks and two the parity information synchronization blocks about being stored in the trick play signal in these synchronization blocks.The parity information that is stored in the synchronization blocks that comprises parity information also obtains when trick play signal is carried out the ECC coding step.
Can resemble and realize the negative special play-back section that is four times in the nominal playback speed the example that the following describes.When giving main synchronization blocks from 0, it is first synchronization blocks open numbering in the auxiliary record zone of track, until 305, when being last synchronization blocks of regional 12a of track, synchronization blocks among the section 28.i (4), wherein i equals 2,6,10,14,18 and 22, is the synchronization blocks of numbering from 51 to 75 (containing) in the track, and being numbered 74 and 75 synchronization blocks here is the synchronization blocks that comprises parity information.In addition, the synchronization blocks in section 28.j (4), wherein j equals 4,8,12,16,20 and 24, and for being numbered the synchronization blocks of 122 to 146 (containing) in the track, wherein being numbered 145,146 synchronization blocks is the synchronization blocks that comprises parity information.Synchronization blocks in section 28.k (4), wherein k equals 1,5,9,13,17 and 21, and for being numbered the synchronization blocks of 194 to 218 (containing) in the track, wherein being numbered 216,217,218 synchronization blocks is the synchronization blocks that comprises parity information.In addition, the synchronization blocks of section in 28.1 (4), wherein 1 equals 3,7,11,15,19 and 23, and for being numbered the synchronization blocks of 265 to 289 (containing) in the track, wherein being numbered 287,288,289 synchronization blocks is the synchronization blocks that comprises parity information.
Like this, negative being four times in the replay mode of datum speed, in each rotation period of magnetic drum, read 100 synchronizing signal pieces (2 * 22+2 * 23+10 synchronization blocks) of the 3rd information signal from record carrier.This quantity with the special play-back synchronization blocks of four times of speed under the replay mode of datum speed is identical.
Fig. 3 a also show some tracks that are arranged in the track groups that 48 tracks constitute lower edge, be numbered the part of 28.25 (4) to 28.29 (4).In this example, the position of these positions for being read with the negative replay mode that is four times in datum speed by one of two statures, this head has the first party parallactic angle.When shown in position when comprising the subcode signal recording section, might be still read information in the subcode information recording section with the negative replay mode that is four times in datum speed.
Fig. 4 shows the 4th information signal in the particular segment that is recorded in track.These sections are with numbering 34.i (+12) expression among Fig. 4, and wherein i is from 1 to 16.The 4th information signal is used for resetting with 12 times of playback speeds to the nominal playback speed forward at replay device.The 4th information signal may for the irrelevant information signal of above-mentioned the first and/or second and/or the 3rd information signal.In view of the 4th information signal is forward with 12 times of trick play signals of playing to the nominal playback speed, in order to obtain (video) signal of resetting, the 4th information signal also may be relevant with first information signal, this signal is the copy of first (video) signal after resetting, but it is reset to datum speed (forward) with 12 times.
Fig. 4 a shows identical with Fig. 4 track groups that is made of 48 tracks, yet Fig. 4 a only shows 16 section 34.i (+12).The orbit number of first track in the track groups of illusory 48 tracks is that the orbit number of last track in track 0 and the track groups is a track 47, these sections just are recorded in the track that orbit number is 3+n.2 and 14+n.2 and 38+n.2 so, and n is the integer of from 0 to 3 (containing) here.
Fig. 4 also shows 4 scan lines 36.1,36.2,37.1,37.2.Double-head arrow scan line 37.1,37.2 shows in two rotation periods of magnetic drum, and the stature with first party parallactic angle is at 12 times of track routes on record carrier under the pattern of nominal playback speed.Single arrow scan line 36.1 and 36.2 shows in these two rotation periods of magnetic drum, and another stature with second party parallactic angle is at 12 times of track routes on record carrier under the pattern of nominal playback speed.As can be seen from Figure 4, a stature reads special play-back section 34.i (+12), and wherein i equals 1 to 4 (containing) and 9 to 12 (containing), and another stature then reads special play-back section 34.j (+12), and wherein j equals 5 to 8 (containing) and 13 to 16 (containing).
The length of the special play-back section 34.i (+12) that has is ((m 2-4) 22 main synchronization blocks/8=), the length of the special play-back section 34.i (+12) that has is ((m 2+ 12) 24 main synchronization blocks/8=).Length is that the special play-back section of 22 synchronization blocks comprises 11 information contents and is stored in the information-related synchronization blocks of special play-back in these synchronization blocks, and each piece repetition in 11 synchronization blocks and this 11 synchronization blocks in addition.Length is that the special play-back section of 24 synchronization blocks comprises 12 information contents and is stored in the information-related synchronization blocks of special play-back in these synchronization blocks, and each piece repetition in 12 synchronization blocks and this 12 synchronization blocks in addition.
Can resemble realize the example that the following describes+12 times to the special play-back section of nominal playback speed.When giving main synchronization blocks once more from 0, it is first synchronization blocks open numbering in the auxiliary record zone of track, until 305, when being last synchronization blocks of regional 12a of track, special play-back synchronization blocks in section 34.1 (+12) and 34.9 (+12) is the synchronization blocks of numbering from 76 to 99 (containing) in the track, is numbered the repetition of the synchronization blocks of 88 to 99 (containing) for the synchronization blocks of numbering 76 to 87 (containing) here.In addition, the special play-back synchronization blocks in section 34.2 (+12) and 34.10 (+12) is the synchronization blocks of numbering 141 to 162 (containing), is numbered the repetition of the synchronization blocks of 152 to 162 (containing) for the synchronization blocks of numbering 141 to 151 (containing) here.Special play-back synchronization blocks in section 34.3 (+12) and 34.11 (+12) is the synchronization blocks of numbering 206 to 227 (containing), is numbered the repetition of the synchronization blocks of 217 to 227 (containing) for the synchronization blocks of numbering 206 to 216 (containing) here.In addition, the special play-back synchronization blocks in section 34.4 (+12) and 34.12 (+12) is the synchronization blocks of numbering 271 to 292 (containing), is numbered the repetition of the synchronization blocks of 282 to 292 (containing) for the synchronization blocks of numbering 271 to 281 (containing) here.
Special play-back synchronization blocks in section 34.5 (+12) and 34.13 (+12) is the synchronization blocks of numbering 44 to 67 in the track, and the synchronization blocks of numbering 56 to 67 (containing) here is the repetition of the synchronization blocks of 44 to 55 (containing).In addition, the special play-back synchronization blocks in section 34.6 (+12) and 34.14 (+12) is the synchronization blocks of numbering 109 to 130 in the track, and the synchronization blocks of numbering 120 to 130 (containing) here is the repetition of the synchronization blocks of 109 to 119 (containing).Special play-back synchronization blocks in section 34.7 (+12) and 34.15 (+12) is the synchronization blocks of numbering 174 to 195 (containing) in the track, and the synchronization blocks of numbering 185 to 195 (containing) here is the repetition of the synchronization blocks of 174 to 184 (containing).In addition, the special play-back synchronization blocks in section 34.8 (+12) and 34.16 (+12) is the synchronization blocks of numbering 239 to 260 (containing) in the track, and the synchronization blocks of numbering 250 to 260 (containing) here is the repetition of the synchronization blocks of 239 to 249 (containing).
Like this, one+12 times in the replay mode of datum speed, in each rotation period of magnetic drum, read 180 synchronizing signal pieces (6 * 22+2 * 24 synchronization blocks) of the 4th information signal from record carrier.
Fig. 4 a also show some tracks that are arranged in the track groups that 48 tracks constitute lower edge, be numbered the part of 34.17 (+12) and 34.18 (+12).In this example, these positions are can be by one of two statures with+12 times of positions of reading to the replay mode of datum speed, and this head has the first party parallactic angle.When shown in position when comprising the subcode signal recording section, might be still read information in the subcode information recording section with+12 times of replay modes to datum speed.
Fig. 5 shows the 5th information signal in the particular segment that is recorded in track.These sections are with numbering 40.i (12) expression among Fig. 5, and wherein i is from 1 to 18.The 5th information signal is used for resetting with negative 12 times of playback speeds to nominal playback speed (promptly backward) at replay device.The 5th information signal may for the irrelevant information signal of above-mentioned the first and/or second and/or the 3rd and/or the 4th information signal.In view of the 5th information signal is with negative 12 times of trick play signals of playing to the nominal playback speed, in order to obtain (video) signal of resetting, the 5th information signal also may be relevant with first information signal, this signal is the copy of first (video) signal after resetting, but it is reset to datum speed (backward) with 12 times.
Fig. 5 a shows identical with Fig. 5 track groups that is made of 48 tracks, yet Fig. 5 a only shows 18 section 40.i (12).The orbit number of first track in the track groups of illusory 48 tracks is that the orbit number of last track in track 0 and the track groups is a track 47, these sections just are recorded in the track that orbit number is 3+n.2 and 27+n.2 (wherein n is from 1 to 3 integer) and orbit number is 14+n.2 and 38+n.2 (n is the integer of from 0 to 4 (containing)) here so.
Fig. 5 only further shows two scan lines 42 and 44.Double-head arrow scan line 42 shows in a rotation period of magnetic drum, and the stature with first party parallactic angle is at-12 times of track routes on record carrier under the pattern of nominal playback speed.Single arrow scan line 44 shows in this rotation period of magnetic drum, and another stature with second party parallactic angle is at-12 times of track routes on record carrier under the pattern of nominal playback speed.As can be seen from Figure 5, a stature reads special play-back section 40.i (12), and wherein i equals 5 to 9 (containing) (with 14 to 18 (containing)), and another stature then reads special play-back section 40.j (12), and wherein j equals 1 to 4 (containing) and 10 to 13 (containing)
Each special play-back section 40.i (12) is 20 synchronous block lengths of master, here each special play-back section comprises 10 synchronization blocks with information content information-related with being stored in special play-back in these synchronization blocks, each piece repetition in other 10 synchronization blocks and this 10 synchronization blocks.
Can resemble and realize-12 times of special play-back sections the example that the following describes to the nominal playback speed.When giving main synchronization blocks once more from 0, it is first synchronization blocks open numbering in the auxiliary record zone 8 of track, until 305, when being last synchronization blocks of regional 12a of track, synchronization blocks in section 40.5 (12) and 40.14 (12) is the synchronization blocks of numbering from 30 to 49 (containing) in the track, is numbered the repetition of the synchronization blocks of 40 to 49 (containing) for the synchronization blocks of numbering 30 to 39 (containing) here.In addition, the synchronization blocks in section 40.1 (12) and 40.10 (12) is the synchronization blocks of numbering 57 to 76 (containing), is numbered the repetition of the synchronization blocks of 67 to 76 (containing) for the synchronization blocks of numbering 67 to 56 (containing) here.Synchronization blocks in section 40.6 (12) and 40.15 (12) is the synchronization blocks of numbering 85 to 104 (containing), is numbered the repetition of the synchronization blocks of 95 to 104 (containing) for the synchronization blocks of numbering 85 to 94 (containing) here.In addition, the synchronization blocks in section 40.2 (12) and 40.11 (12) is the synchronization blocks of numbering 112 to 131 (containing), is numbered the repetition of the synchronization blocks of 122 to 131 (containing) for the synchronization blocks of numbering 112 to 121 (containing) here.
Synchronization blocks in section 40.7 (12) and 40.16 (12) is the synchronization blocks of numbering 139 to 158 (containing), is numbered the repetition of the synchronization blocks of 149 to 158 (containing) for the synchronization blocks of numbering 139 to 148 (containing) here.In addition, the synchronization blocks in section 40.3 (12) and 40.12 (12) is the synchronization blocks of numbering 167 to 186 (containing), is numbered the repetition of the synchronization blocks of 177 to 186 (containing) for the synchronization blocks of numbering 167 to 176 (containing) here.Synchronization blocks in section 40.8 (12) and 40.17 (12) is the synchronization blocks of numbering 194 to 213 (containing), is numbered the repetition of the synchronization blocks of 204 to 213 (containing) for the synchronization blocks of numbering 194 to 203 (containing) here.In addition, the synchronization blocks in section 40.4 (12) and 40.13 (12) is the synchronization blocks of numbering 222 to 241 (containing), is numbered the repetition of the synchronization blocks of 232 to 241 (containing) for the synchronization blocks of numbering 222 to 231 (containing) here.At last, the synchronization blocks in section 40.9 (12) and 40.18 (12) is the synchronization blocks of numbering 249 to 268 (containing), is numbered the repetition of the synchronization blocks of 259 to 268 (containing) for the synchronization blocks of numbering 249 to 258 (containing) here.
Like this, one-12 times in the replay mode of datum speed, in each rotation period of magnetic drum, read 180 synchronizing signal pieces (9 * 20 synchronization blocks) of the 5th information signal from record carrier.This quantity with the synchronization blocks of+12 times of speed playback patterns is identical.
Fig. 5 a also show some tracks that are arranged in the track groups that 48 tracks constitute lower edge, be numbered the part of 40.19 (12) and 40.20 (12).In this example, these positions are can be by one of two statures with-12 times of positions of reading to the replay mode of datum speed, and this head has the first party parallactic angle.When shown in position when comprising the subcode signal recording section, might be still read information in the subcode information recording section with-12 times of replay modes to datum speed.
Fig. 6 shows the 6th information signal in the particular segment that is recorded in track.These sections are with numbering 48.i (+24) expression among Fig. 6, and wherein i is from 1 to 18.The 6th information signal is used for resetting in the playback speed of nominal playback speed with+24 times (promptly forward) at replay device.The 6th information signal may for the irrelevant information signal of above-mentioned the first and/or second and/or the 3rd and/or the 4th and/or the 5th information signal.In view of the 6th information signal is the trick play signal of playing to the nominal playback speed with+24 times, in order to obtain (video) signal of resetting, the 6th information signal also may be relevant with first information signal, this signal is the copy of first (video) signal after resetting, but it is reset to datum speed with+24 times.
Fig. 6 a shows identical with Fig. 6 track groups that is made of 48 tracks, yet Fig. 6 a only shows 18 section 48.i (+24).The orbit number of first track in the track groups of illusory 48 tracks is that the orbit number of last track in track 0 and the track groups is a track 47, these sections just are recorded in the track that orbit number is 4+n.2 and 27+n.2 so, and n is the integer of from 0 to 8 (containing) here.
Fig. 6 further shows two scan lines 50 and 51.Double-head arrow scan line 50 shows in a rotation period of magnetic drum, and the stature with first party parallactic angle is at+24 times of track routes on record carrier under the pattern of nominal playback speed.Single arrow scan line 51 shows in this rotation period of magnetic drum, and another stature with second party parallactic angle is at+24 times of track routes on record carrier under the pattern of nominal playback speed.As can be seen from Figure 6, a stature reads special play-back section 48.i (+24), and wherein i equaled for 1 to 9 (containing), and another stature then reads special play-back section 48.j (+24), and wherein j equaled for 10 to 18 (containing).
Each special play-back section 48.i (+24) is 15 synchronous block lengths of master, and each section comprises 5 synchronization blocks with information content information-related with being stored in special play-back in these synchronization blocks here, and each all repeats these 5 synchronization blocks twice.
Can resemble realize the example that the following describes+24 times to the special play-back section of nominal playback speed.When giving main synchronization blocks once more from 0, it is first synchronization blocks open numbering in the auxiliary record zone 8 of track, until 305, when being last synchronization blocks of regional 12a of track, synchronization blocks in section 48.10 (+24) is the synchronization blocks of numbering from 29 to 43 (containing) in the track, is numbered the repetition of the synchronization blocks of 34 to 38 (containing) and 39 to 43 (containing) for the synchronization blocks of numbering 29 to 33 (containing) here.Synchronization blocks in section 48.1 (+24) is the synchronization blocks of numbering 43 to 57 (containing), is numbered the repetition of the synchronization blocks of 48 to 52 (containing) and 53 to 57 (containing) for the synchronization blocks of numbering 43 to 47 (containing) here.Synchronization blocks in section 48.11 (+24) is the synchronization blocks of numbering 60 to 74 (containing), is numbered the repetition of the synchronization blocks of 65 to 69 (containing) and 70 to 74 (containing) for the synchronization blocks of numbering 60 to 64 (containing) here.Synchronization blocks in section 48.2 (+24) is the synchronization blocks of numbering 74 to 88 (containing), is numbered the repetition of the synchronization blocks of 79 to 83 (containing) and 84 to 88 (containing) for the synchronization blocks of numbering 74 to 78 (containing) here.Synchronization blocks in section 48.12 (+24) is the synchronization blocks of numbering 91 to 105 (containing), is numbered the repetition of the synchronization blocks of 96 to 100 (containing) and 101 to 105 (containing) for the synchronization blocks of numbering 91 to 95 (containing) here.Synchronization blocks in section 48.3 (+24) is the synchronization blocks of numbering 105 to 119 (containing), is numbered the repetition of the synchronization blocks of 110 to 114 (containing) and 115 to 119 (containing) for the synchronization blocks of numbering 105 to 109 (containing) here.In addition, the synchronization blocks in section 48.13 (+24) is the synchronization blocks of numbering 122 to 136 (containing), is numbered the repetition of the synchronization blocks of 127 to 131 (containing) and 132 to 136 (containing) for the synchronization blocks of numbering 122 to 126 (containing) here.Synchronization blocks in section 48.4 (+24) is the synchronization blocks of numbering 136 to 150 (containing), is numbered the repetition of the synchronization blocks of 141 to 145 (containing) and 146 to 150 (containing) for the synchronization blocks of numbering 136 to 140 (containing) here.
Synchronization blocks in section 48.14 (+24) is the synchronization blocks of numbering 153 to 167 (containing), is numbered the repetition of the synchronization blocks of 158 to 162 (containing) and 163 to 167 (containing) for the synchronization blocks of numbering 153 to 157 (containing) here.Synchronization blocks in section 48.5 (+24) is the synchronization blocks of numbering 167 to 181 (containing), is numbered the repetition of the synchronization blocks of 172 to 176 (containing) and 177 to 181 (containing) for the synchronization blocks of numbering 167 to 171 (containing) here.
Synchronization blocks in section 48.15 (+24) is the synchronization blocks of numbering 184 to 198 (containing), is numbered the repetition of the synchronization blocks of 189 to 193 (containing) and 194 to 198 (containing) for the synchronization blocks of numbering 184 to 188 (containing) here.Synchronization blocks in section 48.6 (+24) is the synchronization blocks of numbering 198 to 212 (containing), is numbered the repetition of the synchronization blocks of 203 to 207 (containing) and 208 to 212 (containing) for the synchronization blocks of numbering 198 to 202 (containing) here.
Synchronization blocks in section 48.16 (+24) is the synchronization blocks of numbering 215 to 229 (containing), is numbered the repetition of the synchronization blocks of 220 to 224 (containing) and 225 to 229 (containing) for the synchronization blocks of numbering 215 to 219 (containing) here.Synchronization blocks in section 48.7 (+24) is the synchronization blocks of numbering 229 to 243 (containing), is numbered the repetition of the synchronization blocks of 234 to 238 (containing) and 239 to 243 (containing) for the synchronization blocks of numbering 229 to 233 (containing) here.
Synchronization blocks in section 48.17 (+24) is the synchronization blocks of numbering 246 to 260 (containing), is numbered the repetition of the synchronization blocks of 251 to 255 (containing) and 256 to 260 (containing) for the synchronization blocks of numbering 246 to 250 (containing) here.Synchronization blocks in section 48.8 (+24) is the synchronization blocks of numbering 260 to 274 (containing), is numbered the repetition of the synchronization blocks of 265 to 269 (containing) and 270 to 274 (containing) for the synchronization blocks of numbering 260 to 264 (containing) here.
Synchronization blocks in section 48.18 (+24) is the synchronization blocks of numbering 277 to 291 (containing), is numbered the repetition of the synchronization blocks of 282 to 286 (containing) and 287 to 291 (containing) for the synchronization blocks of numbering 277 to 281 (containing) here.Synchronization blocks in section 48.9 (+24) is the synchronization blocks of numbering 291 to 305 (containing), is numbered the repetition of the synchronization blocks of 296 to 300 (containing) and 301 to 305 (containing) for the synchronization blocks of numbering 291 to 295 (containing) here.
Like this, one+24 times in the replay mode of datum speed, in each rotation period of magnetic drum, read 270 synchronizing signal pieces (18 * 15 synchronization blocks) of the 6th information signal from record carrier.
Fig. 6 a also show some tracks that are arranged in the track groups that 48 tracks constitute lower edge, be numbered the part of 48.19 (+24).In this example, this position is can be by one of two statures with+24 times of positions of reading to the replay mode of datum speed, and this head has the first party parallactic angle.When shown in position when comprising the subcode signal recording section, might be still read information in the subcode information recording section with+24 times of replay modes to datum speed.
Fig. 7 shows the 7th information signal in the particular segment that is recorded in track.These sections are with numbering 54.i (24) expression among Fig. 7, and wherein i is from 1 to 18.The 7th information signal is used for resetting (promptly backward) with-24 times of playback speeds to the nominal playback speed at replay device.The 7th information signal may for the irrelevant information signal of above-mentioned the first and/or second and/or the 3rd and/or the 4th and/or the 5th and/or the 6th information signal.In view of the 7th information signal is the trick play signal of playing to the nominal playback speed with-24 times, in order to obtain (video) signal of resetting, the 7th information signal also may be relevant with first information signal, this signal is the copy of first (video) signal after resetting, but it is reset (promptly backward) to datum speed with-24 times.
Fig. 7 a shows identical with Fig. 7 track groups that is made of 48 tracks, yet Fig. 7 a only shows 18 section 54.i (24).The orbit number of first track in the track groups of illusory 48 tracks is that the orbit number of last track in track 0 and the track groups is a track 47, and these sections just are recorded in track that orbit number is 1+n.2 and 24+n.2 and 34+n.2 (n is the integer of from 0 to 4 (containing) here) and the track 11,15,17 so.
Fig. 7 further shows two scan lines 58 and 56.Double-head arrow scan line 56 shows in a rotation period of magnetic drum, and the stature with first party parallactic angle is at-24 times of track routes on record carrier under the pattern of nominal playback speed.Single arrow scan line 58 shows in this rotation period of magnetic drum, and another stature with second party parallactic angle is at-24 times of track routes on record carrier under the pattern of nominal playback speed.As can be seen from Figure 7, a stature reads special play-back section 54.i (24), and wherein i equaled for 1 to 8 (containing), and another stature then reads special play-back section 54.j (24), and wherein j equaled for 9 to 18 (containing).
Each special play-back section 54.i (24) is 15 synchronous block lengths of master, and each section comprises 5 synchronization blocks with information content information-related with being stored in special play-back in these synchronization blocks here, and each all repeats these 5 synchronization blocks twice.
Can resemble and realize-24 times of special play-back sections the example that the following describes to the nominal playback speed.When giving main synchronization blocks once more from 0, it is first synchronization blocks open numbering in the auxiliary record zone 8 of track, until 305, when being last synchronization blocks of regional 12a of track, synchronization blocks in section 54.9 (24) is the synchronization blocks of numbering from 29 to 43 (containing) in the track, is numbered the repetition of the synchronization blocks of 34 to 38 (containing) and 39 to 43 (containing) for the synchronization blocks of numbering 29 to 33 (containing) here.Synchronization blocks in section 54.1 (+24) is the synchronization blocks of numbering 43 to 57 (containing), is numbered the repetition of the synchronization blocks of 48 to 52 (containing) and 53 to 57 (containing) for the synchronization blocks of numbering 43 to 47 (containing) here.Synchronization blocks in section 54.10 (24) is the synchronization blocks of numbering 57 to 71 (containing), is numbered the repetition of the synchronization blocks of 62 to 66 (containing) and 67 to 71 (containing) for the synchronization blocks of numbering 57 to 61 (containing) here.Synchronization blocks in section 54.2 (24) is the synchronization blocks of numbering 71 to 85 (containing), is numbered the repetition of the synchronization blocks of 76 to 80 (containing) and 81 to 85 (containing) for the synchronization blocks of numbering 71 to 75 (containing) here.Synchronization blocks in section 54.11 (24) is the synchronization blocks of numbering 86 to 100 (containing), is numbered the repetition of the synchronization blocks of 91 to 95 (containing) and 96 to 100 (containing) for the synchronization blocks of numbering 86 to 90 (containing) here.Synchronization blocks in section 54.3 (24) is the synchronization blocks of numbering 128 to 142 (containing), is numbered the repetition of the synchronization blocks of 133 to 137 (containing) and 138 to 142 (containing) for the synchronization blocks of numbering 128 to 132 (containing) here.In addition, the synchronization blocks in section 54.12 (24) is the synchronization blocks of numbering 114 to 128 (containing), is numbered the repetition of the synchronization blocks of 119 to 123 (containing) and 124 to 128 (containing) for the synchronization blocks of numbering 114 to 118 (containing) here.Synchronization blocks in section 54.4 (24) is the synchronization blocks of numbering 157 to 171 (containing), is numbered the repetition of the synchronization blocks of 162 to 166 (containing) and 167 to 171 (containing) for the synchronization blocks of numbering 157 to 161 (containing) here.
Synchronization blocks in section 54.13 (24) is the synchronization blocks of numbering 143 to 157 (containing), is numbered the repetition of the synchronization blocks of 148 to 152 (containing) and 153 to 157 (containing) for the synchronization blocks of numbering 143 to 147 (containing) here.Synchronization blocks in section 54.5 (24) is the synchronization blocks of numbering 185 to 199 (containing), is numbered the repetition of the synchronization blocks of 190 to 194 (containing) and 195 to 199 (containing) for the synchronization blocks of numbering 185 to 189 (containing) here.
Synchronization blocks in section 54.14 (24) is the synchronization blocks of numbering 171 to 185 (containing), is numbered the repetition of the synchronization blocks of 176 to 180 (containing) and 181 to 185 (containing) for the synchronization blocks of numbering 171 to 175 (containing) here.Synchronization blocks in section 54.6 (24) is the synchronization blocks of numbering 214 to 228 (containing), is numbered the repetition of the synchronization blocks of 219 to 223 (containing) and 224 to 228 (containing) for the synchronization blocks of numbering 214 to 218 (containing) here.
Synchronization blocks in section 54.15 (24) is the synchronization blocks of numbering 200 to 214 (containing), is numbered the repetition of the synchronization blocks of 205 to 209 (containing) and 210 to 214 (containing) for the synchronization blocks of numbering 200 to 204 (containing) here.Synchronization blocks in section 54.7 (24) is the synchronization blocks of numbering 242 to 256 (containing), is numbered the repetition of the synchronization blocks of 247 to 251 (containing) and 252 to 256 (containing) for the synchronization blocks of numbering 242 to 246 (containing) here.
Synchronization blocks in section 54.16 (24) is the synchronization blocks of numbering 228 to 242 (containing), is numbered the repetition of the synchronization blocks of 233 to 237 (containing) and 238 to 242 (containing) for the synchronization blocks of numbering 228 to 232 (containing) here.Synchronization blocks in section 54.8 (24) is the synchronization blocks of numbering 271 to 285 (containing), is numbered the repetition of the synchronization blocks of 276 to 280 (containing) and 281 to 285 (containing) for the synchronization blocks of numbering 271 to 275 (containing) here.
Synchronization blocks in section 54.17 (24) is the synchronization blocks of numbering 257 to 271 (containing), is numbered the repetition of the synchronization blocks of 262 to 266 (containing) and 267 to 271 (containing) for the synchronization blocks of numbering 257 to 261 (containing) here.Synchronization blocks in section 54.18 (24) is the synchronization blocks of numbering 285 to 299 (containing), is numbered the repetition of the synchronization blocks of 290 to 294 (containing) and 295 to 299 (containing) for the synchronization blocks of numbering 285 to 289 (containing) here.
Like this, at one-24 times in the replay mode of datum speed, in each rotation period of magnetic drum, read 270 synchronizing signal pieces (18 * 15 synchronization blocks) of the 7th information signal from record carrier, this synchronization blocks quantity with+24 times of fast reproduction mode is identical.
Fig. 7 a also show some tracks that are arranged in the track groups that 48 tracks constitute lower edge, be numbered the part of 54.19 (24).In this example, this position is can be by one of two statures with-24 times of positions of reading to the replay mode of datum speed, and this head has the second party parallactic angle.When shown in position when comprising the subcode signal recording section, might be still read information in the subcode information recording section with-24 times of replay modes to datum speed.
The special play-back synchronization blocks of above-mentioned various trickplay modes has their special play-back synchronization blocks numberings separately.The numbering of the special play-back synchronization blocks that therefore, will illustrate below is used for showing that with above-mentioned the numbering of the exact position of each section in track is different.
It has been generally acknowledged that:
(a)+4 times and-4 times under the trick play speed of datum speed, in 100 the special play-back synchronization blocks altogether that in each rotation period of magnetic drum, read, there are 90 synchronization blocks to comprise the information of trick play signal, have 10 synchronization blocks to comprise parity information.By the order that in a rotation period of magnetic drum, reads with the special play-back replay mode, these 90 special play-back synchronization blocks were numbered for 0 to 89 (containing), special play-back synchronization blocks 0 is the first special play-back synchronization blocks that is read by the head with first party parallactic angle here.By the order that in a rotation period of magnetic drum, is read, these 10 parity check synchronization blocks were numbered for 90 to 99 (containing), and special play-back synchronization blocks 90 is first special play-back synchronization blocks that comprise parity information that read by the head with first party parallactic angle here.
(b)+12 times and-12 times under the trick play speed of datum speed, in each rotation period of magnetic drum, read 180 special play-back synchronization blocks altogether, double 90 special play-back synchronization blocks, each special play-back section comprises in 90 special play-back synchronization blocks and these 90 special play-back synchronization blocks the duplicate of each.Still by the order that in a rotation period of magnetic drum, reads with the special play-back replay mode, these 90 special play-back synchronization blocks were numbered for 0 to 89 (containing), and special play-back synchronization blocks 0 is first special play-back synchronization blocks that is read by the head with first party parallactic angle here.
(c)+24 times and-24 times under the trick play speed of datum speed, in each rotation period of magnetic drum, read 270 special play-back synchronization blocks altogether, be three times in 90 special play-back synchronization blocks, each special play-back section comprises in 90 special play-back synchronization blocks and these 90 special play-back synchronization blocks two duplicate of each.Still by the order that in a rotation period of magnetic drum, reads with the special play-back replay mode, these 90 special play-back synchronization blocks were numbered for 0 to 89 (containing), and special play-back synchronization blocks 0 is first special play-back synchronization blocks that is read by the head with first party parallactic angle here.
The numbering problem of the special play-back synchronization blocks of first trick play signal (+4x playback speed) at first will be discussed.In the time interval that magnetic drum once rotates, in the process of resetting, have first stature scanning special play-back section, 22.5 (+4) of first party parallactic angle with the playback speed of+4 times of speed, another stature then scans special play-back section 22.6 (+4).The special play-back synchronization blocks of preceding 45 synchronization blocks of section 22.5 (+4) was numbered for 0 to 44 (containing).The special play-back synchronization blocks of preceding 45 synchronization blocks of section 22.6 (+4) was numbered for 45 to 89 (containing).
Section has 5 synchronization blocks that comprise parity information in 22.5 (+4) after 45 synchronization blocks of numbering 0 to 44 (containing), their special play-back synchronization blocks was numbered for 90 to 94 (containing), section has 5 synchronization blocks that comprise parity information in 22.6 (+4) after 45 synchronization blocks of numbering 45 to 89 (containing), their special play-back synchronization blocks was numbered for 95 to 99 (containing)
The numbering of above-mentioned special play-back synchronization blocks all is that effectively i is an odd number here to all paired section 22.i (+4) and 22.i+1 (+4).Therefore, under+4 times of replay modes, in each rotation period of magnetic drum, all repeat this special play-back synchronization blocks numbering.
Therefore, what is interesting is that in a section, the numbering of special play-back synchronization blocks is discontinuous during the border between other synchronization blocks in passing the synchronization blocks that comprises parity information and section.
The numbering problem of the special play-back synchronization blocks of second trick play signal (4x playback speed) next will be discussed.In the time interval that magnetic drum once rotates, in the process of resetting with the playback speed of-4 times of speed, have first stature scanning special play-back section 28.12 (4) and 28.11 (4) of first party parallactic angle, another stature then scans special play-back section 28.10 (4) and 28.9 (4).The special play-back synchronization blocks of preceding 23 synchronization blocks of section 28.12 (4) was numbered for 0 to 22 (containing).The special play-back synchronization blocks of preceding 22 synchronization blocks of section 28.11 (4) was numbered for 23 to 44 (containing).
The special play-back synchronization blocks of preceding 23 synchronization blocks of section 28.10 (4) was numbered for 45 to 67 (containing).The special play-back synchronization blocks of preceding 22 synchronization blocks of section 28.9 (4) was numbered for 68 to 89 (containing).
In 23 synchronization blocks back that are numbered 0 to 22 (containing) two synchronization blocks that comprise parity information are arranged in section 28.12 (4), its special play-back synchronization blocks is numbered 90 and 91.In 22 synchronization blocks back that are numbered 23 to 44 (containing) three synchronization blocks that comprise parity information are arranged in section 28.11 (4), its special play-back synchronization blocks was numbered for 92 to 94 (containing).Section has two synchronization blocks that comprise parity information in 23 synchronization blocks back that are numbered 45 to 67 (containing) in 28.10 (4), and its special play-back synchronization blocks is numbered 95 and 96.Section has three synchronization blocks that comprise parity information in 22 synchronization blocks back that are numbered 68 to 89 (containing) in 28.9 (4), and its special play-back synchronization blocks was numbered for 97 to 99 (containing).
The numbering of above-mentioned special play-back synchronization blocks all is that effectively i equals 4,8,12,16,20 and 24 here to all four section 28.i (4), 28.i-1 (4), 28.i-2 (4) and 28.i-3 (4).Therefore, under-4 times replay mode, in each rotation period of magnetic drum, all repeat this special play-back synchronization blocks numbering.
Remind once more, in a section, the numbering of special play-back synchronization blocks is discontinuous during the border between other synchronization blocks in passing the synchronization blocks that comprises parity information and section.
Why explained later is as above-mentioned, for+4x and-4x special play-back replay mode selects the such special play-back synchronization blocks and the reason of special play-back synchronization blocks numeral order.The advantage of this selection is that the special play-back data are carried out the ECC coding may become a kind of optional recording characteristic, and perhaps, if really the special play-back data are carried out the ECC coding when record, then ECC corrects may become a kind of optional reproducing characteristics.This form allows a kind of different ECC coding, the feasible special play-back synchronization blocks that for example may need when storing parity data more or less.Be positioned at the end of each section when the parity check synchronization blocks, and the numbering of parity check synchronization blocks (90 and more than) is immediately following comprising 89 special play-back synchronization blocks of " truly " information data numbering back of (0 to 89 (containing)), the numbering that comprises these special play-back synchronization blocks of " truly " data remains unchanged and can handle in replay device, do not rely on whether there is the special play-back synchronization blocks that comprises parity data, do not rely on the special play-back synchronization blocks how many existence comprises parity data yet.
The numbering of the special play-back synchronization blocks of the 3rd trick play signal (+12x playback speed) next, will be discussed.In the time interval that magnetic drum once rotates, in the process of resetting with the playback speed of+12 times of speed, have first stature scanning special play-back section 34.i (+12) of first party parallactic angle, i is from 5 to 8 here, another stature then scans special play-back section 34.j (+12), and j is from 9 to 12.The special play-back synchronization blocks of preceding 12 synchronization blocks of section 34.5 (+12) was numbered for 0 to 11 (containing).The special play-back synchronization blocks of preceding 11 synchronization blocks of section 34.6 (+12) was numbered for 12 to 22 (containing).The special play-back synchronization blocks of preceding 11 synchronization blocks of section 34.7 (+12) was numbered for 23 to 33 (containing).The special play-back synchronization blocks of preceding 11 synchronization blocks of section 34.8 (+12) was numbered for 34 to 44 (containing).
The special play-back synchronization blocks of preceding 12 synchronization blocks of section 34.9 (+12) was numbered for 45 to 56 (containing).The special play-back synchronization blocks of preceding 11 synchronization blocks of section 34.10 (+12) was numbered for 57 to 67 (containing).The special play-back synchronization blocks of preceding 11 synchronization blocks of section 34.11 (+12) was numbered for 68 to 78 (containing).The special play-back synchronization blocks of preceding 11 synchronization blocks of section 34.12 (+12) was numbered for 79 to 89 (containing).
The repetition of second group of interior first group of 11 or 12 synchronization blocks of 11 or 12 synchronization blocks sections of being respectively has the identical special play-back synchronization blocks numbering of synchronization blocks that repeats with them.
The numbering of above-mentioned special play-back synchronization blocks all is effectively to all eight section 34.i (+12), here i be from 5 to 12 and i from 13 ... 16,1 ... 4.Therefore, under the replay mode of+12 times of speed, in each rotation period of magnetic drum, all repeat 0 to 89 special play-back synchronization blocks numbering.
The numbering of the special play-back synchronization blocks of the 4th trick play signal (12x playback speed) next, will be discussed.In the time interval that magnetic drum once rotates, in the process of resetting with the playback speed of-12 times of speed, have first stature scanning special play-back section 40.i (12) of first party parallactic angle, i is from 5 to 9 here, another stature then scans special play-back section 40.j (12), and j is from 1 to 4.The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.5 (12) was numbered for 0 to 9 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.6 (12) was numbered for 10 to 19 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.7 (12) was numbered for 20 to 29 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.8 (12) was numbered for 30 to 39 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.9 (12) was numbered for 40 to 49 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.1 (12) was numbered for 50 to 59 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.2 (12) was numbered for 60 to 69 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.3 (12) was numbered for 70 to 79 (containing).The special play-back synchronization blocks of preceding 10 synchronization blocks of section 40.4 (12) was numbered for 80 to 89 (containing).
The repetition of first group of 10 synchronization blocks in second group of 10 synchronization blocks section of being in the special play-back section has the identical special play-back synchronization blocks numbering of synchronization blocks that repeats with them.
The numbering of above-mentioned special play-back synchronization blocks all is that effectively i equals 1 and 10 here to whole 9 sections from 40.i (12) to 40.i+8 (12).Therefore, under the replay mode of-12 times of speed, in each rotation period of magnetic drum, all repeat 0 to 89 special play-back synchronization blocks numbering.
The numbering of the special play-back synchronization blocks of the 5th trick play signal (+24x playback speed) next, will be discussed.In the time interval that magnetic drum once rotates, in the process of resetting with the playback speed of+24 times of speed, have first stature scanning special play-back section 48.i (+24) of first party parallactic angle, i is from 1 to 9 here, another stature then scans special play-back section 48.j (+24), and j is from 10 to 18.The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.1 (+24) was numbered for 0 to 4 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.2 (+24) was numbered for 5 to 9 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.3 (+24) was numbered for 10 to 14 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.4 (+24) was numbered for 15 to 19 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.5 (+24) was numbered for 20 to 24 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.6 (+24) was numbered for 25 to 29 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.7 (+24) was numbered for 30 to 34 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.8 (+24) was numbered for 35 to 39 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.9 (+24) was numbered for 40 to 44 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.10 (+24) was numbered for 45 to 49 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.11 (+24) was numbered for 50 to 54 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.12 (+24) was numbered for 55 to 59 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.13 (+24) was numbered for 60 to 64 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.14 (+24) was numbered for 65 to 69 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.15 (+24) was numbered for 70 to 74 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.16 (+24) was numbered for 75 to 79 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.17 (+24) was numbered for 80 to 84 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 48.18 (+24) was numbered for 85 to 89 (containing).
The repetition of first group of 5 synchronization blocks in second and the 3rd group of 5 synchronization blocks section of being in the section.Second group with the 3rd group in the special play-back synchronization blocks numbering of synchronization blocks identical with their synchronization blocks of repeating in first group.
The numbering of above-mentioned special play-back synchronization blocks all is that effectively i equals from 1 to 18 here to whole 18 section 48.i (+24) the group of forming from 48 tracks.Therefore, under the replay mode of+24 times of speed, in each rotation period of magnetic drum, all repeat 0 to 89 special play-back synchronization blocks numbering.
Next, the numbering that discussion is used for the special play-back synchronization blocks of the 6th trick play signal (24x playback speed).In the time interval that magnetic drum once rotates, in the process of resetting with the playback speed of-24 times of speed, have first stature scanning special play-back section 54.i (24) of first party parallactic angle, i is from 9 to 18 here, another stature then scans special play-back section 54.j (24), and j is from 1 to 8.The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.9 (24) was numbered for 0 to 4 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.10 (24) was numbered for 5 to 9 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.11 (24) was numbered for 10 to 14 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.12 (24) was numbered for 15 to 19 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.13 (24) was numbered for 20 to 24 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.14 (24) was numbered for 25 to 29 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.15 (24) was numbered for 30 to 34 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.16 (24) was numbered for 35 to 39 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.17 (24) was numbered for 40 to 44 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.18 (24) was numbered for 45 to 49 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.1 (24) was numbered for 50 to 54 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.2 (24) was numbered for 55 to 59 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.3 (24) was numbered for 60 to 64 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.4 (24) was numbered for 65 to 69 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.5 (24) was numbered for 70 to 74 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.6 (24) was numbered for 75 to 79 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.7 (24) was numbered for 80 to 84 (containing).The special play-back synchronization blocks of preceding 5 synchronization blocks of section 54.8 (24) was numbered for 85 to 89 (containing).
The repetition of first group of 5 synchronization blocks in second and the 3rd group of 5 synchronization blocks section of being in the section.Second group with the 3rd group in the special play-back synchronization blocks numbering of synchronization blocks identical with their synchronization blocks of repeating in first group.
The numbering of above-mentioned special play-back synchronization blocks all is that effectively i is from 1 to 18 here to whole 18 section 48.i (24) the group of forming from 48 tracks.Therefore, under the replay mode of-24 times of speed, in each rotation period of magnetic drum, all repeat 0 to 89 special play-back synchronization blocks numbering.
0 to 89 special play-back synchronization blocks numbering needs one seven count word, represents with TPSB#.One of read head with the single pass process of a kind of special play-back replay mode to record carrier in, read 55 special play-back synchronization blocks at most.Therefore, when considering that the read head that is used to reset contacts with record carrier, should use 6 count word RSB# to number, thus, when being stored in the special play-back synchronization blocks on the record carrier, just save 1 as the synchronization blocks of special play-back synchronization blocks.
Can convert 7 special play-back synchronization blocks code T PSB# to 6 numbering RSB# in order to following method:
1.1 when special play-back synchronization blocks numbering less than 50 and corresponding special play-back synchronization blocks be to write by first stature with first party parallactic angle, RSB# equals minimum 6 significance bits of TPSB#.
1.2 otherwise RSB# equals minimum 6 significance bits of (TPSB#-40).
The trickplay modes that can be adopted according to resetting in the following method converts special play-back synchronization blocks numbering again to:
2.1 when RSB# less than 50 and corresponding special play-back synchronization blocks be by first stature with first party parallactic angle write the time, minimum six significant figures of TPSB# equal RSB#.The 7th of TPSB# is taken as " 0 ".
2.2 otherwise, TPSB#=RSB#+40.
Next be a form, form shows is+special play-back synchronization blocks code T PSB# under the 4x special play-back replay mode, here, in the single pass process, head with first party parallactic angle reads the special play-back synchronization blocks that is numbered 0 to 49 (containing) and 90 to 94 (containing), and the head with second party parallactic angle then reads the special play-back synchronization blocks that is numbered 45 to 89 (containing) and 95 to 99 (containing).
????TPSB# TP data SB ' s TP parity check SB ' s
The first party parallactic angle ????0…49 ????90…94
The second party parallactic angle ????45…89 ????95…99
During conversion, as mentioned above, RSB# is as follows:
????RSB# TP data SB ' s TP parity check SB ' s
The first party parallactic angle ????0…49 ????50…54
The second party parallactic angle ????5…49 ????55…59
From second form as can be seen, the value ' 40 ' that provides according to top 1.2 formula of locating can not be higher value, in this case, the RSB# of special play-back parity check synchronization blocks will be less than 50, therefore the special play-back synchronization blocks that head read that has the first party parallactic angle will have equal synchronization blocks numbering, and this is unacceptable.In addition, the value that deducts from TPSB# can not be less than 36, because in the case, the RSB# with special play-back parity check synchronization blocks that head read of second party parallactic angle will be between 59 to 63.63 is maximums that 6 RSB word can be represented.
Next, the form of special play-back synchronization blocks will be discussed with reference to figure 8.Store in the main-data area 12 of first digital information signal at Fig. 1, the length of special play-back synchronization blocks is identical with the length of other synchronization blocks.The special play-back synchronization blocks is 112 byte longs, comprises the synchronization character of one 2 byte long, the identification division 60 with the ID sign, 61, one auxiliary bytes 62 of header portion, and the data area 64 of 104 byte longs with " auxiliary data " sign with " main header " sign.The space of data area 64 can store data and 8 parity bytes of the trick play signal (one of second to the 7th information signal) of 96 bytes.
Fig. 9 shows two bytes 70 and 71 in the main header zone 61 of Fig. 8.Although TPSB# is represented as 7 number, have only 6 in the byte 72 in main header zone 61: position b0 can be used for storing special play-back synchronization blocks code T PSB# to b5.These 6 position b0 that can be stored in byte 72 are identified as RSB# to 6 figure places of b5.
In addition, in the special play-back synchronization blocks, store the identifier of trick play speed.This trick play speed identifier can discern ± 4x, ± 12x, ± 24x.One 2 word just is enough to finish this identification.This trick play speed identifier word of 2 is stored among two the position b6 and b7 of byte 72 remainders of Fig. 9.In addition, also must in the special play-back synchronization blocks, store a direction identifier, be identified as with this speed special play-back synchronization blocks forward or backward so that will have the special play-back synchronization blocks of the trick play speed of discerning with 2 trick play speed identifier.Referring to Fig. 9, the byte 70 in 61 (see figure 8)s of main header zone can be used for storing direction identifier.More particularly, 2 word b3, b2 has comprised direction identifier, means that as 2 words ' 10 ' the special play-back synchronization blocks is used for playing forward with the speed of certain special play-back, and 2 words ' 11 ' mean that then the special play-back synchronization blocks is used for playing backward with the speed of certain special play-back.In addition, should be pointed out that b3 in the byte 70, b2=' 00 ' means that synchronization blocks is for comprising " normal play " data synchronization piece.
Normal play synchronization blocks and special play-back synchronization blocks can comprise dummy data.The data area 64 that this means these synchronization blocks comprises the information that useless trick play is play the trick play speed of synchronization blocks.As 2 word b3 of byte 70, when b2 equals ' 01 ', mean that pending synchronization blocks comprises dummy data.To the synchronization blocks of this dummy data, can't store direction identifier in the same position in the byte 70.In this case, adopt 2 b0 and the b1 of byte 70.More particularly, work as b3, when b2 equals ' 01 ' (dummy data), position b0, b1 has following implication:
B1, b0=' 00 ' means the dummy data of ' normal play '
B1, b0=' 01 ' means the dummy data of special play-back forward
B1, b0=' 10 ' means the dummy data of reverse trickplay
Obviously, other word of 2 can be selected.For example, b1, b0=' 10 ' can mean the dummy data of special play-back forward, and b1, b0=' 01 ' then can mean the dummy data of reverse trickplay.
The characteristic that another one should be discussed is the time tag of special play-back synchronization blocks.Time tag is widely known by the people on art technology.In this respect can be with reference to US 5,579,183, the document D1 in the pertinent literature tabulation, and international application W0 96/30.905, the document D2 in the pertinent literature tabulation.These document descriptions on record carrier record MPEG bag, wherein time tag is added into the MPEG bag and then the record MPEG bag of arrival.Playback time reads bag from record carrier, and extraction time indicates and is used in correct moment output packet from bag.
The MPEG bag that Figure 10 shows one 188 byte long is how to be stored in two continuous synchronization blocks, more particularly, and among the data area 64a of two continuous synchronization blocks.At first, the header 75 of the bag of 4 byte longs is stored among first the data area 64a (representing with SBn) in two synchronization blocks, then, the MPEG bag of 92 bytes is stored in the remaining part of data area 64a of synchronization blocks SBn.The mpeg data of all the other 96 bytes is stored among the data area 64a of the second synchronization blocks SBn+1.Time tag corresponding to the bag that transmits is stored in the header 75 of bag.This is presented at Figure 11.More accurately, the time tag of ' normal play ' data be 22 long, and be stored among last 22 of header 75 of bag.
22 the time tag of ' normal play ' data is divided into a TSL (time tag is low) part and a TSH (time tag height) part.TSL partly be 18 long, when the magnetic drum of device when rotating, modulus value circular flow with 225000 with 1800rpm speed, perhaps when the magnetic drum of device rotates with 1800/1.001rpm speed, the modulus value circular flow with 225225.TSH partly be 4 long, with modulus value 12 circular flows.TSL returns zero at every turn, and the value of TSH just increases by 1.
One time Blip Counting device is arranged in the tape deck of Miao Shuing afterwards.For the time tag of the MPEG bag of the information signal that generates ' normal play ', the cycle of time tag counter equals 6 rotation periods of magnetic drum.In this example, the time tag counter produces 22 time tag, and its form is that clock frequency is the count word of 27MHz.
By comprising the bag of the technical I frame that is widely known by the people in the extraction mpeg data stream and these bags being stored in the special play-back synchronization blocks, just can from mpeg data stream, obtain the special play-back information of specific trick play speed.
A kind of time tag counter may be with above-mentioned identical, is used to produce the time tag of the MPEG bag of special play-back information signal.The cycle of this time tag counter equals a rotation period of magnetic drum.In this example, this time tag counter produces 20 the count word of clock frequency 27MHz.The time tag of special play-back data still partly form by one 18 TSL (time tag is low) by (identical with the TSL part of the time tag of above-mentioned normal play) and a TSH (time tag height) part.When the magnetic drum of device rotates with 1800rpm speed, the modulus value circular flow with 225000, perhaps, and when the device magnetic drum rotates with 1800/1.001rpm speed, the modulus value circular flow with 225225.TSH partly be 2 long, with modulus value 4 circular flows.TSL returns zero at every turn, and the value of TSH just increases by 1.As a result, the cycle of TSL equals 1/4th of magnetic drum rotation period, and in a rotation period of magnetic drum, special play-back time tag counter cycle ground changes.The time tag counter is synchronous with a switching pulse, and this pulse generally all is provided in the device.
This time tag of 20 is stored in first the packet head 75 in two continuous special play-back synchronization blocks, and the MPEG bag corresponding with this time tag just is stored in these synchronization blocks, sees Figure 12.
Like this, the transmission bag that is used for being stored in two continuous special play-back synchronization blocks has a time tag, wherein stored two continuous special play-back synchronization blocks that transmit bag and had corresponding special play-back synchronization blocks numbering, this numbering is relevant with the record position of these special play-back synchronization blocks in track.
Equation below utilizing, can from add the time tag that transmits bag to, derive the nominal special play-back synchronization blocks numbering that has wherein stored two special play-back synchronization blocks that transmit bag:
NTPSB#=int[(k+n/N).90/4]
Wherein NTPSB# is a nominal special play-back synchronization blocks numbering, N is a constant, when the magnetic drum of tape deck rotates with 1800rpm speed, equal 225000, and when the device magnetic drum rotates with 1800/1.001rpm speed, just equal 225225, n equals the decimal system numerical value of TSL, and k is the decimal system numerical value of TSH.
Next, two continuous special play-back synchronization blocks are recorded in ad-hoc location in one or two track on the record carrier.The actual special play-back synchronization blocks numbering that these positions are represented corresponding to the ATPSB# that is stored in these special play-back synchronization blocks.
Difference between the nominal special play-back synchronization blocks numbering NTPSB# of the actual special play-back synchronization blocks numbering ATPSB# of special play-back synchronization blocks and this piece of derivation is as follows:
NTPSB#-45＜ATPSB#＜NTPSB+45
Utilize this method, guarantee in a rotation period of magnetic drum, comprise that the position that the special play-back synchronization blocks of part special play-back in wrapping in is recorded in the track of record carrier can be too not far away from the record position of the best, thereby needn't use too much buffer memory to store the bag of reading from record carrier at playback time.Top formula clearly illustrates that the special play-back synchronization blocks that comprises part special play-back bag is stored in the track of the track identical with nominal position or its front or back.But,,, also can guarantee that the special play-back piece retracts correct position at playback time even be recorded in the track of front or back from the angle of time.
The formula that provides above is all effective to the whole special play-back information signals that are recorded on the record carrier, here should be noted that, when ATPSB# selected less than 0 the time, this means that the special play-back synchronization blocks that the special play-back synchronization blocks is numbered ATPSB#+90 is to store in the previous rotation period of magnetic drum, and selected greater than 89 the time as ATPSB#, this means that the special play-back synchronization blocks that the special play-back synchronization blocks is numbered ATPSB#+90 is storing in a rotation period subsequently at magnetic drum.
Next, the device that is used for the helical scan type of recording of trick broadcast information on the longitudinal recording carrier is described.Figure 13 shows and comprises a tape deck of accepting the input terminal 111 of vision signal and corresponding audio signal.Vision signal and corresponding audio signal can be encoded in the transmission bag included in the MPEG continuous data stream that is widely known by the people on the art technology.Input terminal 111 is coupled to the input 112 of " normal play " processing unit 114.In addition, provide " special play-back " processing unit, input 111 also is coupled in its input 117.The corresponding input that multiplexer 122 is coupled in the output 119 and 120 of " normal play " processing unit and " special play-back " processing unit." normal play " information and " special play-back " information will be recorded in the recording section 12 of the main region of track shown in Figure 2.
Desire further to understand description about " normal play " processing unit 114 and " special play-back " processing unit 116, with reference to EP-A 702,877, the document D1 of pertinent literature tabulation.
Subcode and auxiliary signal generator 124 are used for providing the subcode signal that is stored in subcode signal recording section 4 information, and are used for providing the auxiliary signal that is stored in auxiliary signal recording section 8, referring to Fig. 2.The corresponding input of error correction coding unit 126 is coupled in the output of multiplexer 122 and generator 124.Error correction coding unit 126 can be to the step of " normal play " (video and audio frequency) information and special play-back information and executing error correction coding, thereby obtains the parity information shown in the 64b part of synchronization blocks of the 12b part of main signal posting field 12 of Fig. 2 and Fig. 8 and Figure 10.
Tape deck also comprises a generator 130, is used for adding synchronously and id information to synchronization blocks, as shown in Figure 8.In merging device 132,, the signal after merging is applied on the unit 134, composite signal is carried out channel coding here after the signal merging.This channel coding of carrying out in coding unit 134 is widely known by the people on art technology.Desire is understood the example of this channel coding, with reference to US-A 5,142,421, and the document D3 in the reference listing.
An input of r/w cell 136 is coupled in an output of channel coding unit 134, in r/w cell 136, utilization is fixed at least two recording heads 142,144 on the magnetic drum 146 of rotation, and the traffic logging that coding unit 134 is obtained is in the inclined plane of record carrier 149.Recording head 142 has different azimuth mutually with a gap of 144, make (as) azimuth of 142 track of writing in Fig. 1 for from the lower left to the upper right side, and the azimuth of 144 track of writing in Fig. 1 for from the upper left side to the lower right.In addition, can use time marker generator 147 generation time signs, utilize for normal play processing unit 114 and special play-back processing unit 116.
Microprocessor unit 148 is used to control the function of each piece, as:
-by control connection 150 control normal play signal processing pieces 114,
-by control connection 152 control trick play signal processing blocks 116,
-by control connection 154 control subcode signal and auxiliary signal generator pieces 124,
-by control connection 156 control error correction codings 126,
-by control connection 158 control synchronizing signal and ID signal generator pieces 130,
-by control connection 160 control channel encoding blocks 134,
-by the transfer rate of control connection 162 controlling recording carriers 140 and the rotation of magnetic drum 146, and
-by 164 control time of control connection marker generator 147.
Special play-back processing block 116 is fit in a kind of technical mode that is widely known by the people, and extracts the I frame information from first information signal.For produce comprise be used for+4x ,-10 special play-back synchronization blocks of the parity information of 4x trick play speed, in processing unit 116, special play-back information is carried out extra error correction coding step.In addition, for+12x ,-12x ,+24x ,-24x special play-back information signal produces the special play-back synchronization blocks that repeats.
In addition, all produce the special play-back synchronization blocks, on this meaning, for each special play-back synchronization blocks produces trick play speed identifier and direction identifier and is stored in the special play-back synchronization blocks of above-mentioned position for each special play-back information signal.And, produce special play-back synchronization blocks numbering ATPSB# in the above described manner and be stored in the special play-back synchronization blocks, and add a time tag for each bag in each special play-back information signal.
Then, special play-back synchronization blocks and in multiplexer unit 122, mix by " normal play " synchronization blocks that normal play signal processing unit 114 produces, when making in record the information in a complete track with one of the head, the feasible main-data area 12 that can create one of 48 tracks shown in Figure 1 of the order of the synchronization blocks of the synchronization blocks of normal play information and special play-back information.
Increase sub-code data and auxiliary data and the normal play data and the special play-back data of mixing are carried out error correction coding, to obtain the parity information of rail portion 12b.In addition, synchronization character and identifying information have also been added.Then, before in recording the information in track information is carried out the channel coding step.
Should be pointed out that when the group of 48 continuous tracks of record, two tracks in every group, promptly shown in Figure 1 first and last track are without any the special play-back section.This makes might realize editor, and wherein in-edit can accurately be selected in these two the residing positions of track that do not have recording of trick to play section.
After this an embodiment of time mark generator 147 will be described.Referring to WO96/30.905-A2, be document D2, as can be known for time mark generator unit 147 provides an oscillator, this oscillator is locked to the benchmark program clock (PCR) that the MPEG bag is comprised technically, and it is the count pulse of 27MHz that this oscillator provides frequency to counter.
Figure 14 shows an embodiment of the time mark generator 147 that has a 27MHz oscillator 172, and this oscillator provides the clock pulse of 27MHz to counter 174.In response, counter 174 produces " normal play " (NP) time tag with the speed of 27MHz to output 170, offers normal play processing unit 114.The clock pulse of this 27MHz also is provided for frequency divider 176, with its 4 frequency division.Value 4 is relevant with the ratio of first trick play speed (4x) and datum speed (1x).Clock pulse behind 4 frequency divisions is sent to counter 178, backward counter 180 and another frequency divider 182.Counter 178 provides special play-back (TP1) time tag for the first special play-back information signal, and this signal is+4 times of trick play signals under the playback speed of datum speed, and provides TP1 time tag by output 172a to special play-back processing unit 116.Backward counter 180 provides special play-back (TP2) time tag for the second special play-back information signal, this signal is-4 times of trick play signals under the playback speed of datum speed, and provides TP2 time tag by output 172b to special play-back processing unit 116.
Is that factor carries out frequency division and is based on following reason at frequency divider 176 with 4.Illusory NP time tag from counter 174 is made time tag to the bag that is used for first trick play signal.With 4 times of speed playbacks to datum speed the time, these bags will have 4 times of high speed.By frequency four frequency divisions with the generation time sign, in frequency divider 176, and utilize these time tags to make time tag for the bag that is used for first trick play signal, just can be in the correct timing that recovers the trick play signal bag with this trickplay modes playback time.In addition, for when resetting the trick play signal of-4 times of speed, obtaining correct timing, need generation is reverse as the order of the time tag of the function of time.This realizes by counting in reverse in backward counter 180.
Frequency divider 176 to the frequency of the clock pulse that frequency divider 182 provides in frequency divider 182 by 3 frequency divisions.Value 3 is relevant with the ratio of second trick play speed (12x) and first trick play speed (4x).Clock pulse behind 3 frequency divisions is sent to counter 184, backward counter 186 and another frequency divider 188.Counter 184 provides special play-back (TP3) time tag for the 3rd special play-back information signal, this signal is+12 times of trick play signals under the playback speed of datum speed, and provides TP3 time tag by output 172c to special play-back processing unit 116.Backward counter 186 provides special play-back (TP4) time tag for the 4th special play-back information signal, this signal is-12 times of trick play signals under the playback speed of datum speed, and provides TP4 time tag by output 172d to special play-back processing unit 116.
Frequency divider 182 to the frequency of the clock pulse that frequency divider 188 provides in frequency divider 188 by 2 frequency divisions.Value 2 is relevant with the ratio of the 3rd trick play speed (24x) and second trick play speed (12x).Clock pulse behind 2 frequency divisions is sent to counter 190 and backward counter 192.Counter 190 provides special play-back (TP5) time tag for the 5th special play-back information signal, this signal is+24 times of trick play signals under the playback speed of datum speed, and provides TP5 time tag by output 172e to special play-back processing unit 116.Backward counter 192 provides special play-back (TP6) time tag for the 6th special play-back information signal, this signal is-24 times of trick play signals under the playback speed of datum speed, and provides TP6 time tag by output 172f to special play-back processing unit 116.
Figure 15 schematically shows an embodiment of the replay device that is used for utilizing on the playback of recorded carrier 140 information that Figure 13 tape deck obtains.Replay device comprises a reading unit 250, and this unit has two read heads 252,254 at least, is used for the information of the inclined plane on the record carrier 140.The azimuth in a read head gap equals the azimuth of recording head 142, and the azimuth in another read head gap equals the azimuth of recording head 144.An input of channel coding unit 254 is coupled in an output of reading unit 250.This channel coding unit is applicable to the signal that reads being carried out the 25-24 decoding, so that 25 word converts 24 word in the data flow that will come in, as disclosed among the document D3.Next, in error correction unit 258, carry out error correction.
Error correction unit 258 is used for the parity information (see figure 2) that partly reads according to the 12b from track and is stored in the parity information (see figure 8) of the 64b part of synchronization blocks, and the information that reads from record carrier under " normal play " replay mode is carried out error correction.In the special play-back replay mode, according to the parity information in the 64b part that is stored in the special play-back synchronization blocks, only (possibility) carries out an error correction.
An input 259 of " normal play " processing unit 260 is coupled in the output of error correction unit 258.In addition, the input 261 that has of " special play-back " processing unit 262 output of also being coupled to error correction unit 258.The terminal a and the b of corresponding switch 266 is coupled in the output 264 and 265 of " normal play " processing unit 260 and " special play-back " processing unit 262 respectively, and the terminal c of switch 266 then is coupled to lead-out terminal 268.
If replay device switches to " normal play " replay mode, this means that record carrier 140 transmits with datum speed, " normal play " processing unit 260 is activated and switch 266 switches to the a-c position.If replay device is switched to " special play-back " replay mode, claim also " trait model " that this means that record carrier 140 transmits with non-datum speed, " special play-back " processing unit 262 is activated and switch 266 switches to position b-c.
For starting " special play-back " replay mode, replay device also has a tape-servo control device 270, and it produces a control signal, in order to the speed of controlling recording carrier 140.More particularly, in " special play-back " replay mode, control device 270 produces a control signal that transmits record carrier 140, make under first trickplay modes record carrier 140 speed for+4 times to nominal playback speed (according to Fig. 1), 252 according to the line among Fig. 1 24.1 and 24.2 accurately across in orbit, 254 then according to line 26.1 and 26.2 accurately across in orbit.
Under the second special play-back replay mode, the speed of record carrier be-4 times to the nominal playback speed, according to Fig. 3, control device 270 produces a control signal, make 252 according to the line among Fig. 3 30.1 and 30.2 accurately across in orbit, 254 then according to the line among Fig. 3 32.1 and 32.2 accurately across in orbit.
Under the 3rd special play-back replay mode, the speed of record carrier be+12 times to the nominal playback speed, according to Fig. 4, control device 270 produces a control signal, make 252 according to the line among Fig. 4 37.1 and 37.2 accurately across in orbit, 254 then according to the line among Fig. 4 36.1 and 36.2 accurately across in orbit.
Under the 4th special play-back replay mode, the speed of record carrier be-12 times to the nominal playback speed, according to Fig. 5, control device 270 produces a control signal, make 252 according to the line among Fig. 5 42 accurately across in orbit, 254 then according to the line 44 of Fig. 5 accurately across in orbit.
Under the 5th special play-back replay mode, the speed of record carrier be+24 times to the nominal playback speed, according to Fig. 6, control device 270 produces a control signal, make 252 according to the line among Fig. 6 50 accurately across in orbit, 254 then according to the line 51 of Fig. 6 accurately across in orbit.
Under the 6th special play-back replay mode, the speed of record carrier be-24 times to the nominal playback speed, according to Fig. 7, control device 270 produces a control signal, make 252 according to the line among Fig. 7 56 accurately across in orbit, 254 then according to the line 58 of Fig. 7 accurately across in orbit.
In view of the particular path across record carrier is selected for resetting with certain special play-back replay mode, this path is a starting point with track specific on the record carrier, and the control of the record carrier transfer rate that realizes with said method is called as: track selects to transmit control.In addition, select these paths make two read heads have at least one can the subcode information of reading and recording in the recording section 4 of track.In Fig. 1, this be by path 24.1 and 24.2 the walking heads.The head of 26.1 and 26.2 walkings can not read subcode recording section 4 by path, because its scanning is the subcode recording section of the incorrect track in azimuth.In Fig. 3, this be this be by path 30.1 and 30.2 the walking heads.The head of 32.1 and 32.2 walkings can not read subcode recording section 4 by path, because its scanning is the subcode recording section of the incorrect track in azimuth.In Fig. 4, this be this be by path 37.1 and 37.2 the walking heads.The head of 36.1 and 36.2 walkings can not read subcode recording section 4 by path, because its scanning is the subcode recording section of the incorrect track in azimuth.In Fig. 5, this be this be by path 42 the walking heads.The head of 44 walkings can not read subcode recording section 4 by path, because its scanning is the subcode recording section of the incorrect track in azimuth.In Fig. 6, this be this be by path 50 the walking heads.The head of 51 walkings can not read subcode recording section 4 by path, because its scanning is the subcode recording section of the incorrect track in azimuth.In Fig. 7, this be this be by path 58 the walking heads.The head of 56 walkings can not read subcode recording section 4 by path, because its scanning is the subcode recording section of the incorrect track in azimuth.
To explain in detail with the special play-back replay mode below and reset.In the special play-back playback procedure, in a rotation period of magnetic drum, two statures read bit string of " normal play " data and the bit string of " special play-back " data.Incomplete " normal play " data are left in the basket, and then are read as for complete " normal play " synchronization blocks, utilize their identifier that these synchronization blocks identifications (the position b3b2=00 of byte 70 sees Fig. 9) are " normal play " data, and therefore are left in the basket.
When reading synchronization blocks, if in two position b7b6 of byte 72 remainders of Fig. 9, stored a trick play speed identifier, this identifier is corresponding to interested special play-back playback speed, and direction identifier is identified as trick play speed (the position b3b2 of the byte 72 of Fig. 9 equals " 10 ") forward, so synchronization blocks just read be detected as+12 times to the special play-back synchronization blocks of the replay mode of datum speed, be stored in the special play-back processing unit 262, for further handling.
For the playback speed of+4 times of speed and-4 times of speed, in a rotation period of magnetic drum,, be used to the trick play signal that extracts from record carrier in the same rotation period of magnetic drum is carried out ECC one time from the parity data that record carrier reads.For other stunt part playback speed, the data that repeat to be used to resetting of special play-back synchronization blocks are carried out error correction.
Can be with the method for explaining above, utilize that head contacts this knowledge in the playback procedure with record carrier, number to the special play-back synchronization blocks that the RSB# the b5 derives each special play-back synchronization blocks from 6 position b0 that are stored in byte 72.After deriving special play-back synchronization blocks numbering, these numberings are used to the special play-back synchronization blocks is stored in particular memory location in the processing internal memory in the processing unit 262.
Here should be pointed out that the special play-back synchronization blocks to be stored in and handle in the internal memory, use special play-back synchronization blocks numbering more more preferred than the synchronization blocks numbering.Special play-back synchronization blocks numbering memory location direct and in the processing internal memory that stores the special play-back synchronization blocks is relevant.Adopt the synchronization blocks numbering then to need a conversion table, with the synchronization blocks numbering convert to for special play-back synchronization blocks numbering, the special play-back synchronization blocks could be stored in the tram of handling in the internal memory.Therefore, this conversion table must be stored in the replay device.Yet, such conversion table will make the recording/playback system of description can not " forward compatible ", because if in a trendy recording/playback system, selected the another kind of corresponding relation between synchronization blocks numbering and the special play-back synchronization blocks, this just make old system and the tape that obtains with old system utterly useless in new system.
In addition, by using special play-back synchronization blocks numbering, the special play-back synchronization blocks is recorded on the record carrier can has more flexibility, can be stored on the record carrier each position in the track because have the special play-back synchronization blocks of specific special play-back synchronization blocks numbering.Change this position, the synchronization blocks numbering will change.Special play-back synchronization blocks numbering is then constant, makes playback time no matter where the special play-back synchronization blocks stores in orbit, and it all will be stored in the tram of handling in the internal memory.And, do not need memory headroom to store conversion table and execution conversion.
Present extraction special play-back bag in each that just can be from two continuous special play-back synchronization blocks.The time tag of each special play-back information signal bag all is to draw from the header 75 that wraps, and sees Figure 10.
In processing unit 262, the frequency that the fiducial time that comprises in time tag that draws from each bag and the processing unit 262, the Blip Counting device produced is that the time tag of 27MHz compares.When the time tag value of bag was consistent with time tag value that fiducial time, the Blip Counting device produced, bag just was output at output 265, thereby flows in the effective MPEG transmission of output 268 acquisitions.Can comprise a mpeg decoder in the device, separate with output 286 couplings or with device.
Although describe the present invention, should understand these also non-limiting instance with reference to preferred embodiment.Therefore, for the personage of skilled, under the prerequisite of the invention field that does not deviate from the claim defined, various improvement are conspicuous.Therefore, first information signal may be the out of Memory signal beyond the video and/or audio, the number of it is believed that in full.In addition, be recorded in the special play-back section trick play signal may for the irrelevant information signal of first digital information signal.In such an embodiment, record carrier is a kind of recording medium, has a plurality of transmission channels can supply to be used for transmitting independently signal on it.
In addition, the invention reside in the combination of each novel characteristic or characteristic.
The advantage of above-mentioned recording/playback system can be summarized as follows:
1, under a special play-back replay mode, in a rotation period of magnetic drum, reads the special play-back synchronization blocks of fixed qty from record carrier: be 90 special play-back synchronization blocks in this example.
2, the form of gained makes it possible to read subcode with a special play-back replay mode.
3, in a rotation period of magnetic drum, in two scannings of two statures, there is serial data as much as possible and distinguished.
4, the special play-back section is short as far as possible, resets so that obtain reliable special play-back.
5, in the group of (p=) 48 tracks, form is repetition, can select form to realize editor, does not have special play-back information because have one in the track groups of 48 tracks at least.
6, can the section of acquisition with respect to the optimum position of the ideal scan line of reproducing head.
7, obtain best reliability, prevent the track mistake and lose the special play-back synchronization blocks
Should clearly illustrate that very much the special play-back playback speed that the present invention should not be limited to describe in the description of drawings.For example, can select forward and the trick play speed of 6x backward, 18x and 36x, combine with special play-back information in being recorded in (p=) 72 track groups.In addition, the present invention needn't only limit to the record of video data.Can imagine according to the helical scanning principle the present invention to be used for the audio recording system, wherein different audio signals is recorded in the special play-back section of various trick play speed.
Pertinent literature
D1 US 5,579,183, corresponding to EP 702,877-A2 (PHN
14.818)
D2????WO?96/30.905-A2(PHN?15.260)
D3????US-A?5,142,421(PHN?13.537)
D4????WO?95/28061(PHN?14.832)

Claims (39)

1, a kind of with the device in the inclined plane of first and second digital information signal recordings on magnetic recording medium, this device comprises:
The input unit of first, second digital information signal of-reception,
-signal processing apparatus is processed into first, second trick play signal that is fit to be recorded in the track respectively with first, second digital signal,
-write first with the writing speed of record carrier, second trick play signal so that obtain is arranged in the write device of special play-back section of the ad-hoc location of described track, write device comprises first and second write heads that are positioned at least on the rotary head drum, the gap of first stature has the first party parallactic angle, the gap of second stature has the second party parallactic angle that is different from the first party parallactic angle, first digital information signal is used to make replay device to reset to equal writing speed n1 special play-back playback speed doubly, second digital information signal is used to make above-mentioned replay device to reset to equal writing speed n2 special play-back playback speed doubly, here, n1 and n2 are unequal mutually and are not equal to 0 and 1 integer
It is characterized in that, first, second trick play signal comprises first respectively, the synchronous information block of second digital information signal, and write device is fit to the synchronization blocks of first trick play signal is write in the first special play-back section, the synchronization blocks of second trick play signal is write in the second special play-back section, thereby in replay device, can be doubly in the trick play speed playback procedure of writing speed at n1, in a rotation period of magnetic drum, from the first special play-back section, read m1 synchronization blocks of first trick play signal, and make with n2 doubly to the trick play speed playback time of writing speed, can be in a rotation period of rotary head drum, from the second special play-back section, read m1 synchronization blocks of second trick play signal, this replay device has the reading device that reads the first and second special play-back sections, reading device comprises first and second read heads that are positioned at least on the rotary head drum, the azimuth in the first read head gap and above-mentioned first party parallactic angle are basic identical, the azimuth in the second read head gap and above-mentioned second party parallactic angle are basic identical, here, m1 is the integer greater than 1.(v=+4x?en?v=-4x,v=+12x?env=-12x,v=+24x?en?v=-24x)。
2, according to the device of claim 1, it is characterized in that n2=-n1.
3, according to the device of claim 1 or 2, it is characterized in that n1=4,12, or 24.
4, device according to claim 1, it is characterized in that input unit also is fit to accept third and fourth digital information signal, signal processing apparatus also is fit to third and fourth digital information signal is processed into third and fourth trick play signal that is fit to be recorded in the track respectively, write device also is fit to write the 3rd with the writing speed of record carrier, the 4th trick play signal, so that obtain to be arranged in the special play-back section on the track ad-hoc location, the 3rd digital information signal is used to make replay device to reset to equal writing speed n3 special play-back playback speed doubly, the 4th digital information signal is used to make above-mentioned replay device to reset to equal writing speed n4 special play-back playback speed doubly, here, n3 and n4 are unequal mutually and are not equal to n1, n2,0 and 1 integer
The 3rd, the 4th trick play signal comprises the 3rd respectively, the synchronous information block of the 4th digital information signal, and write device is fit to the synchronization blocks of the 3rd trick play signal is write in the 3rd special play-back section, the synchronization blocks of the 4th trick play signal is write in the 4th special play-back section, thereby in replay device, can be doubly in the process that the trick play speed of writing speed is reset at n3, in a rotation period of magnetic drum, from the 3rd special play-back section, read m2 synchronization blocks of the 3rd trick play signal, and can with n4 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, from the 4th special play-back section, read m2 synchronization blocks of the 4th trick play signal, here, m2 is the integer greater than 1.(v=+12x?en?v=-12x,v=+24x?en?v=-24x)。
5, the device of claim 4 basis, it is characterized in that input unit also is fit to accept the 5th and the 6th digital information signal, also suitable the 5th and the 6th digital information signal is processed into respectively of signal processing apparatus is fit to be recorded in the 5th in track and the 6th trick play signal, write device also is fit to write the 5th with the writing speed of record carrier, the 6th trick play signal, so that obtain to be arranged in special play-back section on the track ad-hoc location, the 5th digital information signal is used to make replay device to reset to equal writing speed n5 special play-back playback speed doubly, the 6th digital information signal is used to make above-mentioned replay device to reset to equal writing speed n6 special play-back playback speed doubly, here, n5 and n6 are for being not equal to n1, n2, n3, n4,0 and 1 and mutual unequal integer
The 5th, the 6th trick play signal comprises the 5th respectively, the synchronous information block of the 6th digital information signal, and write device is fit to the synchronization blocks of the 5th trick play signal is write in the 5th special play-back section, the synchronization blocks of the 6th trick play signal is write in the 6th special play-back section, thereby in replay device, can be doubly in the process that the trick play speed of writing speed is reset at n5, in a rotation period of magnetic drum, from the 5th special play-back section, read m3 synchronization blocks of the 5th trick play signal, and can with n6 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, from the 6th special play-back section, read m3 synchronization blocks of the 6th trick play signal, here, m3 is the integer greater than 1.(v=+24x?en?v=-24x)。
6, according to the device of claim 4, it is characterized in that n4=-n3.
7, according to the device of claim 4 or 6, it is characterized in that n3=12.
8, according to the device of claim 5, it is characterized in that n6=-n5.
9, according to the device of claim 5 or 8, it is characterized in that n5=24.
10, according to claim 1,2 or 3 device, it is characterized in that write device is fit to the first special play-back section is write in the track, thereby can with n1 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, read one first special play-back section by first stature, read one first special play-back piece by second stature, m1 is an even number, and each all comprises m1/2 synchronization blocks of first trick play signal in these two first special play-back sections.(v=+4x)
11, according to the device of claim 10, it is characterized in that in each first special play-back section, have m4 synchronization blocks to comprise parity information in m1/2 the synchronization blocks, this m4 synchronization blocks does not have any message part of first digital information signal, and m4 is the integer greater than 1 here.(v=+4x)
12, according to the device of claim 1 or 10, it is characterized in that write device is fit to the second special play-back section is write in the track, thereby can with n2 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, read two second special play-back pieces by first stature, read two second special play-back pieces by second stature, m1 is 4 integral multiple, and each all comprises m1/4 synchronization blocks of second trick play signal in these four second special play-back sections.(v=-4x)
13, according to the device of claim 12, it is characterized in that in two sections of four second special play-back sections, there is (m4-1)/2 synchronization blocks to comprise parity information in m1/4 the synchronization blocks, this (m4-1)/2 synchronization blocks does not have any message part of second digital information signal, and, in other two sections of the second special play-back section, there is (m4+1)/2 synchronization blocks to comprise parity information in m1/2 the synchronization blocks, this (m4+1)/2 synchronization blocks does not have any message part of second digital information signal, and m4 is an odd number.(v=-4x)
14, according to the device of claim 4, it is characterized in that write device is fit to the 3rd special play-back section is write in the track, thereby can with n3 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, read eight the 3rd special play-back sections, m2 is an even number, and per six synchronization blocks that comprise (m2-4)/8 the 3rd trick play signal in these eight the 3rd special play-back sections, each all comprises the synchronization blocks of (m2+12)/8 the 3rd trick play signal in other two the 3rd special play-back sections.(v=+12x)
15,, it is characterized in that each all comprises the synchronization blocks of the 3rd trick play signal in these eight the 3rd special play-back sections, and each of these synchronization blocks of the 3rd trick play signal repeats once at least according to the device of claim 14.(v=+12x)
16, according to the device of claim 4 or 14, it is characterized in that write device is fit to the 4th special play-back section is write in the track, thereby can with n4 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, read nine the 4th special play-back sections, m2 is 9 integral multiple, and each all comprises m2/9 the 4th trick play signal synchronization blocks in these nine the 4th special play-back sections.(v=-12x)
17, according to the device of claim 16, it is characterized in that each all comprises the synchronization blocks of the 4th trick play signal in these nine the 4th special play-back sections, and these synchronization blocks of the 4th trick play signal each repeat once at least.(v=-12x)
18, according to the device of claim 5, it is characterized in that write device is fit to the 5th special play-back section is write in the track, thereby can with n5 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, read 18 the 5th special play-back sections, m3 is 18 integral multiple, and each all comprises m3/18 the 5th trick play signal synchronization blocks in these 18 the 5th special play-back sections.(v=+24x)
19, according to the device of claim 18, it is characterized in that each all comprises the synchronization blocks of the 5th trick play signal in these 18 the 5th special play-back sections, and these synchronization blocks of the 5th trick play signal each repeat once at least.(v=+24x)
20, according to the device of claim 5 or 18, it is characterized in that write device is fit to the 6th special play-back section is write in the track, thereby can with n6 doubly in the process that the trick play speed of writing speed is reset, in a rotation period of rotary head drum, read 18 the 6th special play-back sections, m3 is 18 integral multiple, and each all comprises m3/18 the 6th trick play signal synchronization blocks in these 18 the 6th special play-back sections.(v=-24x)
21, according to the device of claim 20, it is characterized in that each all comprises the synchronization blocks of the 6th trick play signal in these 18 the 6th special play-back sections, and these synchronization blocks of the 6th trick play signal each repeat once at least.(v=-24x)
22, device according to claim 13, it is characterized in that write device is fit to four second special play-back sections are write on certain position in the track, make it possible to n2 doubly to the trick play speed playback time of writing speed, in a rotation period of rotary head drum, read one of two second special play-back sections comprising (m4-1)/2 a parity information synchronization blocks by one of two read heads and comprise one of two second special play-back sections of (m4+1)/2 a parity information synchronization blocks, and can be by another another section that reads another section of two second special play-back sections that comprise (m4-1)/2 a parity information synchronization blocks and comprise two second special play-back sections of (m4+1)/2 a parity information synchronization blocks in two read heads.(V=-4x)
23, device according to claim 14, it is characterized in that write device is fit to the 3rd special play-back section is write on certain position in the track, make it possible to n3 doubly to the trick play speed playback time of writing speed, in a rotation period of rotary head drum, utilize first read head to read to comprise three sections in six the 3rd special play-back sections of (m2-4)/8 the 3rd a trick play signal synchronization blocks and comprise one of two the 3rd special play-back sections of (m2+12)/8 the 3rd a trick play signal synchronization blocks, and utilize second read head to read to comprise three sections in addition in six the 3rd special play-back sections of (m2-4)/8 the 3rd a trick play signal synchronization blocks and comprise another sections of two the 3rd special play-back sections of (m2+12)/8 the 3rd a trick play signal synchronization blocks.(v=+12x)
24, according to the device of claim 16, it is characterized in that write device is fit to nine the 4th special play-back sections are write on certain position in the track, make it possible to n4 doubly to the trick play speed playback time of writing speed, in a rotation period of rotary head drum, utilize first read head to read 5 sections in these nine the 4th special play-back sections of the 4th trick play signal, and utilize second read head to read other four sections in these nine the 4th special play-back sections of the 4th trick play signal.(v=-12x)
25, according to the device of claim 18, it is characterized in that write device is fit to 18 the 5th special play-back sections are write on certain position in the track, make it possible to n5 doubly to the trick play speed playback time of writing speed, in a rotation period of rotary head drum, utilize first read head to read 9 sections in these 18 the 5th special play-back sections of the 5th trick play signal, and utilize second read head to read other 9 sections in these 18 the 5th special play-back sections of the 5th trick play signal.(v=+24x)
26, according to the device of claim 20, it is characterized in that write device is fit to 18 the 6th special play-back sections are write on certain position in the track, make it possible to n6 doubly to the trick play speed playback time of writing speed, in a rotation period of rotary head drum, utilize first read head to read 10 sections in these 18 the 6th special play-back sections of the 6th trick play signal, and utilize second read head to read other 8 sections in these 18 the 6th special play-back sections of the 6th trick play signal.(v=-24x)
27, according to the device of claim 1, it is characterized in that m1=100.
28, according to the device of claim 4, it is characterized in that m2=180.
29, according to the device of claim 5, it is characterized in that m3=270.
30, according to the device of claim 11, it is characterized in that m4-5.
31, the device of stating according to claim 10 is characterized in that write device is fit to p/n1 the mutual first different special play-back section be write in the der group of the individual track continuously of p at every turn.(v=+4x)
32,, it is characterized in that write device is fit to 2.p/n1 the mutual second different special play-back section be write in the der group of the individual track continuously of p at every turn according to the device of claim 12.(v=-4x)
33,, it is characterized in that write device is fit to 4.p/n3 mutual the 3rd different special play-back section be write in the der group of the individual track continuously of p at every turn according to the device of claim 14.(v=+12x)
34,, it is characterized in that write device is fit to 9.p/2.n3 mutual the 4th different special play-back section be write in the der group of the individual track continuously of p at every turn according to the device of claim 16.(v=-12x)
35, the device of stating according to claim 18 is characterized in that write device is fit to 9.p/n5 mutual the 5th different special play-back section be write in the der group of the individual track continuously of p at every turn.(v=+24x)
36, the device of stating according to claim 20 is characterized in that write device is fit to 9.p/n5 mutual the 6th different special play-back section be write in the der group of the individual track continuously of p at every turn.(v=-24x)
37, according to the device of each claim in the claim 31 to 36, it is characterized in that p=48.
38, according to the record carrier that utilizes the device acquisition of stating in aforementioned arbitrary claim.
39, a kind of with the method in the inclined plane of first, second digital information signal recording on magnetic recording medium, this method comprises these steps:
-accept first, second digital information signal,
-first, second digital signal is processed into first, second trick play signal that is fit to be recorded in the track respectively,
-utilization is positioned at least the first and second write heads on the rotary head drum, writing speed with record carrier writes first, second trick play signal, so that acquisition is arranged in the special play-back section of the ad-hoc location of described track, the gap of first stature has the first party parallactic angle, the gap of second stature has the second party parallactic angle that is different from the first party parallactic angle, first digital information signal is used to make replay device to reset to equal writing speed n1 special play-back playback speed doubly, second digital information signal is used to make above-mentioned replay device to reset to equal writing speed n2 special play-back playback speed doubly, here, n1 and n2 are unequal mutually and are not equal to 0 and 1 integer
It is characterized in that first, second trick play signal comprises the synchronous information block of first, second digital information signal respectively, and write step and comprise following substep:
-synchronization blocks of first trick play signal is write in the first special play-back section in the track,
-synchronization blocks of second trick play signal is write in the second special play-back section in the track, thereby in replay device, can be doubly in the process that the trick play speed of writing speed is reset at n1, in a rotation period of magnetic drum, from the first special play-back section, read m1 synchronization blocks of first trick play signal, and make with n2 doubly to the trick play speed playback time of writing speed, can in a rotation period process of rotary head drum, from the second special play-back section, read m1 synchronization blocks of second trick play signal, this replay device has the reading device that reads the first and second special play-back sections, reading device comprises first and second read heads that are positioned on the rotary head drum at least, the azimuth in the first read head gap and above-mentioned first party parallactic angle are basic identical, the azimuth in the second read head gap and above-mentioned second party parallactic angle are basic identical, here, m1 is the integer greater than 1.(v=+4x?en?v=-4x,n=+4x?en?v=+12x)
CN199898800366A 1997-02-03 1998-01-22 Recording of trick play signals on record carrier Pending CN1220801A (en)

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EP97200278 1997-02-03
NL97200278.6 1997-02-03

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JP (1) JP2000508814A (en)
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WO2000024196A1 (en) * 1998-10-21 2000-04-27 Koninklijke Philips Electronics N.V. Reproduction device with a search-reproduction mode
TW559805B (en) * 1999-08-24 2003-11-01 Koninkl Philips Electronics Nv Recording of a trick play signal on a record carrier
KR100592671B1 (en) * 2004-10-27 2006-06-26 삼성전자주식회사 Refrigerator

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US5579183A (en) * 1994-04-08 1996-11-26 U.S. Philips Corporation Recording and reproducing an MPEG information signal on/from a record carrier
JPH09511634A (en) * 1994-04-12 1997-11-18 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ Recording and playback of trick mode video signals
DE69610052T2 (en) * 1995-03-28 2001-04-12 Koninkl Philips Electronics Nv RECORDING AND REPRODUCTION OF AN INFORMATION SIGNAL WITH PACKAGES IN THE SERIAL DATA FLOW UNREGULARLY APPLYING AS A TIME FUNCTION

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WO2018165927A1 (en) * 2017-03-15 2018-09-20 广东欧珀移动通信有限公司 Method for transmitting signal, terminal device and network device
US11057140B2 (en) 2017-03-15 2021-07-06 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method for transmitting signal, terminal device and network device
US11791923B2 (en) 2017-03-15 2023-10-17 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method for transmitting signal, terminal device and network device

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JP2000508814A (en) 2000-07-11
ID21033A (en) 1999-04-08
WO1998034230A2 (en) 1998-08-06

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