JPS631267A - Recorder - Google Patents

Abstract

PURPOSE:To perform the smooth and quick reproduction of a series of sound signals or their corresponding video signals in a prescribed transmitting order, by producing a sequence data table to designate the order of reproduction of those sound signals recorded to a recording medium and their corresponding video signals and recording these signals to each prescribed recording track. CONSTITUTION:A user or an operator operates a keyboard input device 50 to supply the sequence data to set the transmitting order for blocks of sound and video signal in a reproduction mode of a disk D and then to write the sequence data to a table memory 38 for production of a sequence data table. The data on a control data table and the sequence data table produced in the memory 38 are recorded on an at least a single track CT of a prescribed position on the disk D. In a reproduction mode the sequence control data recorded to the track CT are reproduced before reproduction of the sound and video signals.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Industrial field of application B0 Summary of the invention C3 Prior art 1 Problems to be solved by the invention E0 Means for solving the problems F1 Effects G. Embodiment G-1 An embodiment of the recording device G -2 Example of Reproducing Apparatus H8 Effects of the Invention A, Industrial Field of Application The present invention relates to a recording apparatus capable of recording and forming audio signal recording tracks and video signal recording tracks in a mixed manner on the same recording medium.

B1 Summary of the Invention The present invention provides a recording device capable of recording audio signals and video signals onto multiple recording tracks of the same recording medium, in which a series of temporally continuous audio signals is recorded across multiple tracks. Recording is possible, and an information signal including a recording track number for the audio signal of the series and a video track number on which the corresponding video signal is recorded is recorded on at least the audio track, and the audio signal and video signal of the series are recorded. Sequence data that specifies the sending order of the blocks is programmed in advance is written into the table memory, and this written sequence data is recorded on a predetermined recording track on the recording medium. This system is designed to smoothly and quickly reproduce a series of audio signals and corresponding video signals in a predetermined order specified by the user.

C9 Prior Art The present applicant has previously proposed, for example, in Japanese Patent Laid-Open No. 58-218004, a so-called electronic still camera for recording still images that can also record audio.

On a disc recorded by such an electronic still camera with an audio recording function, video signal tracks and audio signal tracks coexist. There are two types of recording formats for audio signals: one that ends with a single track, and one that spans multiple tracks, and there are also cases where there is a video signal corresponding to the audio signal and cases where there is no video signal. This information is recorded in the control data recording area i3 in the audio signal track. In other words, if consecutive audio signals are recorded across multiple tracks, the number (or address) of the first track
and the following track number (address) are recorded in the control data recording area, and if corresponding video No. 13 exists, the number (address) of that video track is recorded in the control data recording area. recorded in

D1 Problem to be Solved by the Invention By the way, as mentioned above, for a disc on which video signals and audio signals are recorded using an electronic still camera with an audio recording function, it is possible to arbitrarily specify a desired order regardless of the recording order. When playing back or dubbing a series of audio signals and a video signal corresponding to this audio signal, it is necessary to specify the series of audio signals and the video signal corresponding to this audio signal one by one. The operation for specifying the sending order of the above-mentioned series of signals requires a lot of effort and time.

Therefore, the present invention has been made in view of the above-mentioned conventional situation, and it is possible to arbitrarily programmatically specify the transmission order of a series of audio signals and corresponding video signals recorded on a disk, thereby smoothly and quickly transmitting them. An object of the present invention is to provide a recording device with a novel configuration that records sequence data on a recording medium so that sequence data can be reproduced.

Means for Solving the E0 Problem In order to solve the above-mentioned problem, the present invention provides a recording apparatus capable of recording at least an audio signal recording track and a video signal recording track in a mixed manner on the same recording medium. , at least the audio signal recording track includes an information signal including a recording track number for a temporally continuous audio signal recorded across a plurality of tracks and a recording track number for a video signal corresponding to the audio signal. record and
A table memory is provided for storing sequence data for preprogramming and specifying each track number data of the information signal and the sending order of a series of audio signal and video signal blocks, and the sequence data in the table memory is provided. is recorded on a predetermined recording track on the recording medium.

F2 action In the recording device according to the present invention, a data table is formed on the table memory using sequence data specifying the playback order of a series of audio signals recorded on a recording medium and blocks of video signals corresponding to the audio signals. , the sequence data is recorded on a predetermined recording track on the recording medium.

G. Embodiment G-1 An Embodiment of a Recording Apparatus FIG. 1 shows an embodiment of the present invention in which an audio signal recording track (audio track) and a video signal recording track (video track) are used as a recording medium. FIG. 2 is a block diagram showing a recording device that can record on a single disc in a mixed manner.

In FIG. 1, a video signal for one screen (for example, 1 field) to be recorded is supplied to an input terminal 1, and after being converted into a predetermined recording signal by a recording circuit 2, a pre-emphasis circuit with non-linear characteristics 3. The signal is sent to the FM modulation circuit 5 via the changeover switch 4. The FM modulation circuit 5 converts the signal into an FM signal and sends it to the magnetic head 6, where it is recorded as a video track VT on a disk D rotated by a motor M at, for example, 3600 rpm.

On the other hand, the audio signal is supplied to the input terminal 11 and passed through the A/D encoder 12 for noise reduction.
The signal is sent to the (analog/digital) conversion circuit 13. The signal converted into a digital quantity by this human/D conversion circuit 13 is written into the memory 14. Then, the signal read from the memory 14 is sent to a D/A (digital/analog) conversion circuit 15 and converted into an analog quantity 1^. At this time, a clock signal of frequency fc for sampling an audio signal in a band of 5 KHz is sent from the oscillator 21 to the A/
The signal is supplied to the D conversion circuit 13 and also to the address counter 22 that drives and controls the memory 14 . In this embodiment, the frequency t is, for example, 640 times the frequency re of the sampling clock signal.
o (=640 r c) clock signal is sent to the oscillator 23
The signal is supplied to the D/A converter 1^ circuit 15 and also to the address counter 22. Further, a predetermined portion of the disk D (for example, a disk rotation drive shaft)
A pulse signal every 1/60 second related to the rotational phase of the disk by the magnetic piece G provided in the pink amplifier is sent to the hood 2.
4 and is supplied to the timing signal generation circuit 25, and a timing signal generated by the timing signal generation circuit 25 based on this pulse signal is supplied to the address counter 22. Note that the timing signal from the timing signal generation circuit 25 is also supplied to an identification signal generation circuit 26 and an encoder 33, which will be described later. Further, a shutter button operation signal (not shown) is supplied to the timing signal generation circuit 25 from a terminal 27.

That is, the audio signal converted into a digital quantity by the A/D conversion circuit 13 in accordance with the sampling signal from the oscillator 21 is stored in the memory 14 using the sampling signal as a write clock. At this time, the audio signal is divided into 2 or 5 seconds (1 sector or l
8 are written into the memory 14 for each segment). Then, in accordance with the signal from the oscillator 23, the interpolated signal is sent to the memory at a speed 640 times faster than writing in this embodiment.
It is read from 4. In other words, a 2.5 second audio signal is compressed in time to 1/650 (2.5/640=3.9 milliseconds). This time-base compressed audio No. 13 corresponds to the audio signal AS shown in FIG. 2, which will be described later. In addition, at the time of reading, each audio signal corresponding to each sector SA, 3m, Sc, Ss on the disk opening in FIG.
Based on a pulse signal with a period of /60 seconds, the signals are read out at timings that are sequentially shifted in phase by 1/4 cycle'M (1/240 seconds) every 2.5 seconds.

As mentioned above, the audio signal read out from the memory 14 is converted into an analog quantity by the D/A conversion circuit 15.
It is supplied to the mixing circuit 16. The mixing circuit 16 also receives a start identification signal SID and an end identification signal (SID) based on the timing signal from the timing signal generation circuit 25.
No. 8 EID is supplied. Further, in the mixing circuit 16, an information signal API consisting of a control code for controlling the reproduction operation of the audio signal generated in the information signal generation circuit 32 based on a control signal from the system controller 31 is sent to the encoder 33. Supplied via. Then, each signal is formed in the mixing circuit 16, and a signal having a form as shown in FIG. 2 is formed. This FIG. 2 shows a signal for one sector, in which a start identification signal SID is placed at the front of the time-base compressed audio signal As, and an end identification signal EID is placed at the rear.

Here, the control code data of the information signal API includes at least the current track number N2, the first track number N in the case of continuous audio, and the subsequent track number N11%.
Furthermore, the number of the video track on which the corresponding video signal is recorded (corresponding track number) Nc is included, and in addition, data regarding the time compression mode, sector usage status, etc. are included as necessary. . Above track number Nt
and N is the track number N in which the first part of the series of audio signals is recorded, and the track number N that is currently being recorded, when a series of temporally continuous audio signals is recorded across multiple tracks. Each number represents the track number N7 in which a continuous portion of the audio signal is recorded.

The mixing circuit 16 in FIG. 1 outputs a signal in the sector format as shown in FIG.
The signal is sent to the FM modulation circuit 5 via the FM modulation circuit 5. The signal from the FM modulation circuit 5 is sent to the magnetic head 6, and is recorded at a rate of 4 sectors per track on the disk, as shown in FIG. That is, one audio track AT on a disc has four sectors Sa, Sm, and Sc.

S, is recorded.

Next, when recording video signals and audio signals as described above, a head position control signal from the system controller 31 is supplied to the head drive motor 36 via the head drive circuit 35. By driving and controlling the magnetic head 6, the magnetic hendroid is positioned at a track position on the disk corresponding to the current track number N, for example. Also, the above-mentioned first track number Nts and subsequent track number N at this time.

The corresponding track number Nc, etc. are stored in the table memory 3.
8 and is stored therein, for example, to create a control data table as shown to a fourth countryman.

That is, in a fourth country person showing an example of a control data table, a memory block for one track consists of 26 bits of bits b, ~bzs, and bits b, ~bzs.
Allocate 6 bins of bS to your own track number NL, and determine whether the audio signal is recorded on track 8T in bin)bi, or beat it b? This indicates whether the image (video) signal recording track is T or not. Further, the 6 bits of bits b and ~b+s are assigned to the above-mentioned first track number Nr, and the 6 bits of bits b14 to b+v are assigned to the above-mentioned subsequent track number N7, and B/) b□. ~
b□ is assigned to the corresponding track number Nc. The table memory 31 is constructed by using memory blocks of 26 bits per track for a number corresponding to all tracks on the disk (excluding the control track mentioned above), for example, 50 tracks. For example, addresses from θ to 49 are assigned to the blocks.

When recording video No. 43 or an audio signal, the track number NL currently being recorded, the AT or VT instruction bit, the first track number Nt, and the succeeding track number N for each block in order from the block with the smallest address above. , and the corresponding track number Nc are written to the corresponding bit positions, respectively.

Here, the contents of the table are shown to the fourth countryman when recording is performed on the recording tracks on the disc in the order shown in FIG. 5, for example. That is, in FIGS. 4A and 5, a single video signal is first recorded in the fifth track, and the N5 bit areas of the block with address "0" are recorded in the bit areas S, ~B, ``5''
” is written, AT focus b6 is “0”, VT bit b is rlJ, and Nt, N, and Nc are all “0”. Next, the video signal is transferred to the 6th track. In response to the recording of the corresponding audio signal on the seventh track, data regarding the track NL=7 is written in the block at address "2". In this way, the tables shown in FIG. 4 are sequentially created in accordance with the recording order shown in FIG. 5 on disk D.

Here, the contents of the table shown in FIG. 4 created as described above are read out from the table memory 38 via the system controller 31 and displayed on a monitor output device 60 such as a CRT display device. It looks like this.

In this embodiment, while referring to the control data table displayed on the monitor output device 60,
By operating the keyboard input device 50, the user or operator inputs sequence data specifying the order in which each audio number 13 and video signal block is to be sent out when playing back this disc D, and inputs the sequence data into the table memory 38. For example, it is possible to create a sequence data table as shown in FIG. 4B corresponding to the program sending order shown in FIG.

In FIG. 4B, which shows an example of a sequence data chain, the memory block for one sequence has bits b0 to b.
1. Consists of 14 pintos, bit B. -bs+ is assigned to sequence number N, focus b2ffi indicates whether or not the audio signal recording track is AT, bit b indicates whether or not the video signal recording track VT, and bits bza~ 6 bits are assigned to the reproduction track number N. In this way, in the memory block of 14 bits per sequence, the sequence data table for 50 tracks corresponding to the maximum number of sequences on the disk D, that is, all the tracks (excluding the control track) is stored in the table memory 31. created above. Note that the sequence data is assigned, for example, addresses 50 to 99 following the control data.

Each data of the control data table and sequence data table created in the table memory 14 as described above is stored in the table memory 14, for example, immediately before removing the disk D from the mounting surface or immediately before powering off. The data is read out from the memory 14 and recorded as sequence control data on at least one track (control track) CT at a predetermined position (for example, the outermost circumference side or the innermost circumference side) on the disc as shown in FIG. be done.

Here, as shown in FIG. 6, the control track CT is divided into 100 segments SG~5G99 corresponding to twice the total tracks (50 tracks) of the disk D, and 50 segments SGo~5G4q. The above control data is recorded in the segment, and Sfi<sc,
. The above sequence data is recorded in 50 segments of ~5Gqq. Each segment SGo to 5Gaq in which the above control data is recorded includes:
Starting from the synchronization signal area, N, AT, VT, corresponding to one data block of the control data table above,
N, , N, , N, data recording areas are sequentially provided. Also, each segment SGs in which the above sequence data is recorded. ~5Cvq, starting from the synchronizing signal area, there are sequentially provided recording areas for data N, AT, VT, N corresponding to one data block of the sequence data table. In this case, it may be assumed that segment SGk at address k corresponds to the block at address rkJ in the table memory 38, and data in this block is recorded in segment SGk.

When recording table data on the control track CT, the data in the table memory 38 is transferred to the system controller 31 and the (nIli signal generation circuit 32).
The system controller signal from the pre-emphasis circuit 17 is read out as a formant signal (control data signal) shown in FIG. 6 and sent to the pre-emphasis circuit 17 via the encoder 33 and the mixing circuit 16. 4 to the FM modulation circuit 5. At the same time, a head position control signal from the system controller 31 is sent to the head drive motor 36 via the head drive circuit 35, so that the position of the control track CT on the disc (
For example, the movement is controlled to the outermost track position), and a signal from the FM modulation circuit 5 is supplied to the Va-radiator 6 to perform recording on the control track CT.

When recording on an empty track (unrecorded track) of a partially recorded disk D, for example, when the disk D is installed in a recording device such as an electronic still camera, or when recording is performed from a power-off state. When switching to the standby state, etc., the reproduction block 40 reproduces at least the control track CT, the information signal detection circuit 45 reads the control data such as each track number, and the data is transferred to the table memory via the system controller 13. The read data is written to 38.

Here, the reproducing block 40 has a configuration as shown in FIG. The M demodulator 42 demodulates the FM, and the de-emphasis circuit 43 has the opposite characteristics to the pre-emphasis circuit 17 of the audio recording system, and the decoder 4 has the opposite characteristics to the encoder 33.
It has been sent to 4. The output signal from this decoder 44 is supplied to the information signal detection circuit 45 shown in FIG.

This is useful for electronic still cameras, such as types that allow the disc fr to be removed while recording is partially performed on the disc D, and types where the recorded data in the table memory 38 is erased when the power is turned off. Since the usage status or recording status of all recording tracks on the disc is always written in the table memory 38 before signal recording, track management becomes easy and recorded tracks This avoids the inconvenience of accidentally recording a new signal.

G-2. An example of a reproducing apparatus Next, when reproducing the disc D on which such recording has been performed, a reproducing apparatus as shown in FIG. 8, for example, may be used.

In FIG. 8, the system controller 24 operates the helad drive circuit 1 before reproducing the audio signal or the video signal.
08 and head drive motor 09, the magnetic helad 101 is controlled to move to the position of the control track CT, and the sequence control data recorded on this track CT is reproduced. That is, the reproduced signal from the magnetic head 101 obtained by scanning the control track CT is transmitted to each track Nt, Nt in the table by the information signal detection circuit 122 via the FM demodulation circuit 102 and the de-emphasis circuit 111.

As a data signal indicating N, , Nc, N, , N, etc.,
The data is sequentially read into the corresponding position of the table memory 31 via the system controller 24. By writing the above-mentioned control data and sequence data reproduced from the control track CT into the table memory 31, the control data table shown in FIG. A data table is created.

Then, by referring to the sequence data table on the table memory 131, the system controller 24 automatically reproduces the audio and video signals from the disk D in the transmission order preset in the program using the recording bag. The operation of the head drive circuit 108 is controlled so as to do so.

In this embodiment, the contents of the table memory 131 are read out via the system controller 124 and output to the monitor output device 1 such as a CRT display ViZ.
It is displayed at 32. Then, on the playback device side, the contents of the table memory 131 are changed by the user or operator inputting the key ρ input device 133 or the like using the iHM while referring to the table display, etc. This allows you to arbitrarily specify the order in which audio and video are played back and forth.

Here, a device is provided for restoring the video signal and audio signal of the playback device shown in FIG. This is what is being done.

That is, in FIG. 8, a signal reproduced from disk D by magnetic head 101 is supplied to FM demodulation circuit 102. In FIG. When the magnetic head 101 is scanning a video track VT on which a video signal is recorded, the demodulated signal is taken out as a video signal from an output terminal 105 via a de-emphasis circuit 103 and a reproducing circuit 104 with non-linear characteristics.

When the magnetic helad 101 is scanning a track on which an audio signal is recorded, the demodulated signal is sent to the A/D conversion circuit 1 via a de-emphasis circuit 111 with linear characteristics.
12, and is also supplied to an identification signal detection circuit 121 and an information signal detection circuit 122. The start identification signal SID and end identification signal EID detected by the identification signal detection circuit 121 are transmitted to the timing signal generation circuit 1.
Sent to 23rd. Is the start identification signal SID 1 above? ′
T? Ia (It is also sent to the i-minute detection circuit 122, and an information signal API for controlling the reproduction operation of the audio signal detected by the information signal detection circuit 122 is also sent to the timing signal generation circuit 123. The signal API and the video synchronization signal S from the synchronization separation circuit 106 are sent to the system controller 124 to control the entire child device.

The audio signal converted into a digital quantity by the A/D conversion circuit 112 is written into the memory 113. And memory 11
The signal read from 3 is sent to the D/A conversion circuit 114 and converted into an analog quantity.

Here, the frequency f is equal to that of the oscillator 23 described above.

A signal with a frequency fc that is 1/640 of the signal output from the oscillator 125 is supplied from the oscillator 127 to the D/A conversion circuit 114. It is also supplied to the address counter 126. moreover,
A timing signal based on a 1/60 second cycle pulse signal from the pickup head 128 is generated by a timing signal generation circuit 123 and supplied to the address counter 126. Then, writing is performed in response to a signal from the oscillator 127, and reading is performed at a writing speed of 1640 in accordance with a signal from the oscillator 127.

In other words, the operation is completely opposite to that during recording, and the audio signal is expanded 640 times in the time axis direction and returned to its original length. D/A whose time axis has been extended in this way
The signal from the conversion circuit 114 is taken out as a continuous audio signal from an output terminal 116 via a decoder 115 for noise reduction.

H1 Effects of the Invention As is clear from the description of the embodiments described above, the recording device according to the present invention has a sequence that specifies the playback order of a series of audio signals recorded on a recording medium and video No. 13 corresponding to this audio signal. A sequence data table is formed on the table memory and the sequence data is recorded on a predetermined recording track on the recording medium. By reading this sequence data before playback, the sequence data can be read out before playback. A series of audio signals and corresponding video signals can be smoothly and quickly reproduced in a predetermined transmission order according to the data.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a recording device according to an embodiment of the present invention, FIG. 2 is a diagram showing an audio signal recording format for one sector, and FIG. 3 is an audio track and control diagram on a disk. a plan view schematically showing a truck;
Figure 4 is a schematic diagram showing an example of a control data table inside the table memory, Figure 4B is a schematic diagram showing an example of a sequence data table inside the table memory, and Figure 5 is a schematic diagram showing an example of the sequence data table inside the table memory. FIG. 6 is a schematic diagram showing an example of the recording format of the control track; FIG. 7 is a block diagram showing an example of the playback block in FIG. 1; FIG. The figure is a block diagram showing an example of a reproducing apparatus for reproducing a disc recorded by the above recording apparatus. 6.--Magnetic head 31--System controller 32--Information signal generation circuit 35--Head drive circuit 36--Head drive motor 38--Table memory 45--Information signal detection Circuit D - Disk AT - Audio track CT - Control track Patent applicant: Sony Corporation - Agent: Patent attorney Koike Mimi Tamura Ei - Sector 7 years old - Mar - /) -17 + - Example Fig. 2 On Tinugu! 71 confirmation truck Figure 3 Figure 4 A

Claims (1)

[Claims] In a recording device capable of forming recordings by mixing at least an audio signal recording track and a video signal recording track on the same recording medium, at least the audio signal recording track includes a plurality of tracks. An information signal including a recording track number of a temporally continuous audio signal to be recorded and a recording track number of a video signal corresponding to the audio signal is recorded, and each track number data of this information signal and a series of audio signals are recorded. A table memory is provided for storing sequence data specifying a sending order of blocks of signals and video signals programmed in advance, and the sequence data in the table memory is recorded on a predetermined recording track on the recording medium. A recording device characterized by: