JPH0636532A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To confirm video recording contents and remaining time of plural tapes and to easily search a program desired to watch. CONSTITUTION:A tape number is recorded to each tape 13 to be recorded, and a storage area for each tape number is set in a memory 5, and then the tape number, time codes showing a video recording starting point and ending point of each video recording program and subcodes for a title, a genre, started time and a video recording channel, etc., are stored in each individual storage area in the memory 5. At the time of reproducing, when the tape number recorded in the tape 13 is read out, the subcodes are read out of the storage area corresponding to this tape number in the memory 5, and the contents of these subcodes are displayed in a screen by using a character generating circuit 4 and a character display control circuit 1. When a desired program is specified with this display screen, the time code of starting video recording of this program is detected from the subcodes in the memory 5, and based on this, an automatic program searching operation is control by a system control circuit 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus for managing contents recorded on a plurality of magnetic tapes and facilitating retrieval thereof.

[0002]

2. Description of the Related Art Conventionally, a magnetic recording / reproducing apparatus (hereinafter referred to as VTR
A magnetic tape (hereinafter, simply referred to as a tape) on which a video signal, an audio signal, etc. are recorded by the above is generally attached to an index label in which the recorded contents are written by hand to manage the tape cassette. .

Further, some tapes have a plurality of programs recorded therein, so that a desired program can be quickly reproduced by utilizing a cue signal. That is, the user checks the index label to see which program is the program he / she wants to watch, and inputs the numerical value into the VTR.
Counts the number of cueing signals while fast-forwarding or rewinding, and plays the tape when the count value corresponding to the input numerical value is reached. An example of such a cueing system is VISS (VHS Index Search).
h System) and the like are well known.

[0004]

However, in such a method, it is necessary to remember on which tape the program desired to be watched is recorded, and the previous program is erased to record a new program. In that case, the index label had to be rewritten or replaced, which was a troublesome procedure.

Therefore, in order to facilitate the retrieval of the contents of the tape, it has been proposed to apply the concept of a directory used in a floppy disk or the like (for example, Japanese Patent Laid-Open No. 64-13278). This proposal is for directory information (program number, program name, start address, end address, input source,
Information necessary for searching date, time, required time, recording mode, comment, etc., which will be referred to as "subcode" below) is recorded in the subcode area on the tape, and the tape is ejected. The position (the position where the latest directory information is recorded) is stored in the VTR so that the user can easily retrieve the latest recorded contents of the tape at any time. However, in this example, it is not considered to watch the recorded contents of a plurality of tapes at the same time, and it is necessary to remember which tape the program desired to watch is recorded.

On the other hand, if the recorded contents of a plurality of tapes are V
A VTR has been put on the market which is stored in the TR and is capable of displaying a program list and automatically playing back to the beginning. To do this, stick the number label with the barcode printed on the tape,
The VTR reads the bar code from the number label to recognize the tape number when the tape is mounted.

According to this, it becomes possible to easily search for a plurality of tapes, but the recorded contents of this VTR are
Only for tapes recorded in TR,
It is not valid for a tape recorded by another VTR, and if the VTR body is changed due to replacement of the VTR or the like, all stored contents will be invalid. There is also a drawback that an extra mechanism or circuit for reading the barcode is required.

An object of the present invention is to provide a magnetic recording / reproducing apparatus which solves such a problem and enables the recorded contents of the tape to be searched immediately and easily.

Another object of the present invention is to provide a magnetic recording / reproducing apparatus capable of preventing the loss of the data of the recorded contents of the tape once set.

[0010]

In order to achieve the above object, the present invention provides means for recording and reproducing a tape number on a magnetic tape, and data for indicating the recorded contents of a plurality of magnetic tapes. Storage means for storing in the area set corresponding to the above, and means for reading and displaying the data of the recorded contents from the area of the storage means corresponding to the tape number.

Further, the present invention further comprises means for recording the above-mentioned recorded content data on a magnetic tape, means for reproducing the recorded content data from the magnetic tape, and the reproduced recorded content data described above. Means for storing in a predetermined area of the storage means.

[0012]

A tape number is assigned to each of a plurality of magnetic tapes and recorded on each magnetic tape, and data indicating the recorded contents of the magnetic tape for each tape number is stored in the storage means. By reading the tape number from the tape, the data indicating the recorded contents of the magnetic tape is read from the storage means and displayed on the display device. Therefore, the content recorded on each magnetic tape can be immediately known. Moreover, since the tape number recorded on the magnetic tape is used, the reproducing means provided in the VTR can be used as a means for reading this tape number, and a special number label or bar code can be read. No mechanism or circuit is required.

Further, since data indicating the recorded contents is recorded on each magnetic tape and can be read out and stored in the storage means, even if the data in the storage means is lost or cannot be used, new correct data is obtained. Can be held in the storage means.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing an embodiment of a magnetic recording / reproducing apparatus according to the present invention, in which 1 is a character display control circuit, 2 is a video signal processing circuit, 3 is a recording / reproduction control circuit, 4 is a character signal generating circuit, 5 is a memory, 6 is an information signal processing circuit, 7 is an information signal generation / discrimination circuit, 8 is a system control circuit, 9 is an operating unit, 10 and 11 are rotary magnetic heads, 12 is a rotary cylinder, 13 is a magnetic tape, 14 Is a video signal input terminal, and 15 is a video signal output terminal.

In the figure, an operation unit 9 is for performing operations of the VTR, instructing screen display, inputting character titles, etc., and includes a recording key, a reproduction key, a fast forward key, a rewind key, a stop key, an eject key. (Tape cassette removal)
Various keys such as keys, number keys, character keys, and list display keys are provided. The information signal generation / discrimination circuit 7 communicates information with the system control circuit 8,
Date, time, day of week, time code indicating position on tape, cue signal, reception channel number (that is, recording channel number) of built-in tuner (not shown), recording mode (standard / long time), title character , Genre,
A subcode such as the remaining tape time is generated, and the data sent from the information signal processing circuit 6 is discriminated to generate and output the required subcode. Further, the information signal generation / discrimination circuit 7 also reads the subcode of the tape number stored in the memory 5 and automatically sets a new tape number. The character signal generation circuit 4 generates a character signal for the subcode synchronized with the video signal. The character display control circuit 1 is a switch circuit having a built-in monochromatic video signal generation circuit, and selects either the video signal output, the character signal output, or the superimposed signal output. The memory 5 stores a subcode for each of the plurality of tapes. The system control circuit 8 records a control signal (not shown) necessary for the VTR to perform an operation corresponding to a key operation of the operating unit 9 and a servo circuit (not shown) for controlling the rotation phase of the rotary cylinder 12 or the like. Reproduction control circuit 3,
In addition to supplying to other parts, it also controls the built-in tuner and calculates the remaining tape time.

Next, the operation of this embodiment will be described. First, at the time of recording, as indicated by the solid line arrow, the video signal input from the input terminal 14 is the character display control circuit 1
Is supplied to the video signal processing circuit 2 via. In the video signal processing circuit 2, the video signal is separated into a luminance signal and a color signal, the luminance signal is subjected to processing such as emphasis and FM modulation, and the color signal is subjected to processing such as frequency conversion. The luminance signal and the color signal are recombined to form a modulated video signal. This modulated video signal is supplied to the recording / reproduction control circuit 3. On the other hand, the above-mentioned sub-code is generated from the information signal generation / discrimination circuit 7, and the sub-code is further modulated by the information signal processing circuit 6 to which the error detection code and the synchronization signal are added to become a modulated information signal. After that, it is supplied to the recording / reproducing control circuit 3. In the recording / reproducing control circuit 3, the modulation information signal is inserted into the modulated video signal, supplied to the rotary magnetic heads 10 and 11 on the rotary cylinder 12, and recorded on the magnetic tape 13.

The subcode output from the information signal generating / determining circuit 7 is stored in the memory 5 and
The character signal is also supplied to the character signal generation circuit 4 to generate a character signal corresponding to the subcode, and the character signal is supplied from the output terminal 15 to the display device (not shown) via the character display control circuit 1 to display necessary information. Is done.

Next, the reproducing operation of this embodiment will be described. In this case, the signal reproduced from the magnetic tape 13 by the rotary magnetic heads 10 and 11 is supplied to the recording / reproduction control circuit 3 and separated into a reproduction modulation video signal and a reproduction modulation information signal, as indicated by the broken line arrow. Then, the reproduction modulated video signal is supplied to the video signal processing circuit 2, and the reproduction modulation information signal is supplied to the information signal processing circuit 6. Video signal processing circuit 2
In this case, the reproduction modulation information signal is separated into a luminance signal and a color signal, the luminance signal is subjected to processing such as FM demodulation and de-emphasis, and the color signal is subjected to processing such as frequency conversion. The signal is re-synthesized to form a video signal. Further, in the information signal processing circuit 6, the reproduced modulation information signal is subjected to processing such as demodulation and error detection, and is output as an information signal. This information signal is supplied to the information signal generation / discrimination circuit 7, and various sub coats are discriminated. Then, subcodes to be displayed on the screen, such as time code, date, and time, are supplied to the character signal generation circuit 4 and converted into a character signal, and the character display control circuit 1 superimposes them on the video signal from the video signal processing circuit 2. It is superimposed and supplied from the output terminal 15 to a display device (not shown).

Further, when the sub-code to be stored, which is discriminated by the information signal generation / discrimination circuit 7, is supplied to and stored in the memory 5, and the information signal reproduced during the fast forward or rewind operation is the cue signal. The data corresponding to this cueing signal is sent to the system control 8 and the magnetic tape 1
3 is stopped, or the running state of normal reproduction is set.

FIG. 2 shows an outline of the recording format on the magnetic tape 13. Reference numeral 20 is a PCM audio recording area, 21 is a subcode recording area, and 22 is a video / FM audio recording area.

In the figure, each track is provided with a PCM audio recording area 20 for recording a PCM audio signal and a video / FM audio recording area 22 for recording the above-mentioned modulated video signal and FM audio signal. A subcode recording area 21 is provided between the PCM audio recording area 20 and the video / FM audio recording area 22. The information signal is coded, and CRCC (Cyclic Redundancy C
After a code for error detection called a "heck code" and a synchronizing signal are added, it is modulated by a modulation method called a bi-phase mark to become the above-mentioned modulation information signal, which is recorded in the sub-code recording area 21. Such an error detection and modulation method is almost the same as that of the 8-bit PCM audio signal of 8 mm VTR, and since it is described in many documents, its details are omitted here.

As described above, the subcode recording area 21 has P
Since the CM audio recording area 20 and the video / FM audio recording area 22 are independent of each other, after-recording of an information signal of a subcode (additional recording of subcode, rewriting, etc.) is performed independently of a video signal and an audio signal. be able to.

FIG. 3 is a block diagram showing a specific example of the character display control circuit 1 in FIG. 1, in which 23 is a blue back signal (a video signal of one color of blue) generating circuit, 24 is a white level generating circuit, and 25 is. Gate circuits, 26 to 29 are changeover switches, and 30 and 31 are input terminals.

In the figure, the changeover switches 26 to 29 are controlled by the system control circuit 8 as follows. That is, the changeover switch 26 is changed over to the R side at the time of recording and the P side at the time of reproduction, and the changeover switch 27 is set to the a side when the video signal 16 is not input or when it is desired to display only characters, and in other cases. Can be switched to the b side respectively. Further, the changeover switch 28 is changed over to the d side when the character signal 17 is “H” (high level) and to the c side when the character signal 17 is “L” (low level).
Is switched to the f side when the character signal is inserted in the video signal recorded on the magnetic tape 13 and to the e side when not inserted.

Therefore, the video signal Vr to be recorded is input from the input terminal 14, and the reproduced video signal Vp supplied from the video signal processing circuit 2 of FIG. 1 is input from the input terminal 30, but these video signals are not input. At this time, the changeover switch 27 is closed to the side a, and the blueback signal Bb output from the blueback signal generation circuit 23 is supplied from the output terminal 15 to the display device (not shown) via the changeover switches 27 and 28. As a result, the display device displays a single-color blue screen. This state is a state in which neither power is turned on nor recording or reproduction.

In this state, the operating section 9 (FIG. 1)
The contents of the information input from the operation unit 9 and the contents represented by the sub-codes stored in the memory 5 (FIG. 1) can be displayed as a list by the operation of. The discrimination circuit 7 generates such a subcode. This sub-code is converted by the character generation circuit 4 (FIG. 1) into a character signal CS as a binarized signal whose signal portion is, for example, "H", and is input from the input terminal 31 to the character display control circuit 1 and the gate circuit. It is supplied to the changeover switch 28 via 25. The changeover switch 28 is
During the "L" period of the character signal CS, the character signal CS is closed to the c side, and the blue back signal Bb from the blue back signal generation circuit 23 is generated.
Is selected, but d is selected in the signal period of "H" of the character signal CS.
The white level signal W from the white level generation circuit 24.
S is selected and supplied from the output terminal 15 to the display device. As a result, the display device is supplied with a signal obtained by superimposing the white level signal WS on the blue background signal Bb, and a screen in which white level characters are superimposed with blue as the background is displayed. The gate circuit 25
Gates the character signal CS when the character display is unnecessary so that the changeover switch 28 does not switch to the d side.

During recording, the changeover switch 26 is closed to the R side, the changeover switch 27 is closed to the b side, and the changeover switch 29 is closed to the e side. The video signal Vr is input from the input terminal 14, and the changeover switches 26 and 27 are input. , 29 to the video signal processing circuit 2 of FIG. 1 and the output terminal 15 to the display device for monitoring during recording.

When a desired subcode is generated from the information signal generation / discrimination circuit 7 by the operation of the operation unit 9 during this recording, the system control circuit 8 is switched by the subcode generation instruction operation of the operation unit 9. 29 is switched to the f side. As a result, the input video signal Vr is supplied to the video signal processing circuit 2 through the changeover switches 26, 27, 28, 29. At this time, when the character signal CS is supplied via the gate circuit 25, At the signal portion of "H", the changeover switch 28 is switched to the d side, and the white level signal WS from the white level generation circuit 24 is selected instead of the video signal Vr. Therefore, the character signal CS is superimposed on the video signal Vr as the white level signal WS, and the video signal is recorded on the magnetic tape 13 and supplied to the display device from the output terminal 15 to display the display. The device displays a screen in which white characters representing the contents of the subcode are superimposed on the image formed by the video signal Vr.

Next, the operation of this embodiment will be described. First, here, the V which this embodiment just purchased
TR, and the unused magnetic tape 13 is used for this.

In FIG. 4, first, when the VTR is powered on, the system control circuit 8 controls the changeover switch 27 of the character display control circuit 1 and sends a command to the information signal generating / determining circuit 7 to cause the memory 5 to operate. The subcode within is read and an instruction is displayed to display a list of the contents (all list) (step 401). However, in this case, since the VTR has just been purchased and nothing is recorded in the memory 5, the display device only displays the blue screen as described above, and in that state. Wait for the insertion of the tape cassette (step 403).

When the tape cassette is inserted and detected, the VTR rewinds the tape 13 slightly (for about 1 second), and then puts it in the reproduction mode for about 1 second, and the subcode recording area 21 of the track is sub-recorded. Although the code is to be reproduced (step 404), since nothing is recorded on the tape 13, the tape number cannot be read from the tape 13 (step 405).
Therefore, the system control circuit 8 uses the tape 13
Set the tape number to "1" (step 41
8), a storage area (hereinafter referred to as M1 area) corresponding to the tape number "1" is secured in the memory 5. Further, in this M1 area, sub storage areas (M1-1, M1-2, ...
…) Is secured. The system control circuit 8 further detects the tape thickness, the number of revolutions of the take-up reel and the supply reel during the reading period of the sub recording area 21 of this track, and calculates the type (recordable time) of the tape 13 from these. Then, the result is stored in the M1 area set in the memory 5 (step 419).

For detecting the tape thickness, for example, in the case of 8 mm VTR, a portion (hole) showing the tape thickness in the tape cassette itself.
Is provided, it can be carried out by the presence or absence of this hole. When the VHS type tape cassette or the like does not have such a display portion, a changeover switch for designating the tape thickness is provided in the operation section 9, and the user operates the switch to designate the tape thickness. May be.

The above operation is carried out in an extremely short period of about 2 to 3 seconds, and after this operation, the process proceeds to step 411 of the next recording process. When an unused tape 13 is used, it is usually used for recording. Therefore, when an unused tape cassette is inserted,
The above operation is always performed and the process proceeds to step 411. Next, step 411 of this recording process will be described with reference to FIG.

When such an unused tape cassette is inserted, the user performs an operation of instructing the receiving channel to be recorded and an operation of instructing recording on the operation unit 9, but before that,
Information indicating the title, genre, etc. of the program to be recorded can be input from the operation unit 9.

In FIG. 5, if information such as the title and genre of the program to be recorded is input by the user operating the operation unit 9 (step 501), the system control circuit 8 causes the information signal generating / determining circuit. 7 is made to create a subcode for this, and is stored in the M1-1 area in the M1 area of the memory 5 (step 50
2) If there is no such operation, the process waits for a recording channel instruction operation or a recording instruction operation (step 503).
First, as a sequence, there is a recording channel instructing operation and then a recording instructing operation. When the recording channel instructing operation is performed, the system control circuit 8 responds to this operation by designating the built-in tuner. If the recording mode is set and the recording instruction operation is performed next (step 503),
The system control circuit 8 sends predetermined data to the information signal generation / discrimination circuit 7 to generate subcodes such as date, time, day of the week, time code and recording channel at the start of recording, and these are generated by M1 of the memory 5. M in the area
After recording in the 1-1 area, recording is started (step 504). During the recording operation, the information signal generating / determining circuit 7 generates a time code indicating the tape number "1" set on the tape 13 and a sequential tape position for information signal processing. Circuit 6,
Rotating magnetic heads 10, 1 via the recording / reproducing control circuit 3
1 is supplied to the sub-code area 21 of the track formed on the tape 13 (step 505).

When the recording is ended by the user's operation of the operation section 9, the system control circuit 8 sends an instruction to the information signal generation / discrimination circuit 7 to set the time code recorded at the recording end position on the tape 13. M of memory 5
It is stored in the M1-1 area in one area (step 5
07), the recording time and the remaining tape amount are calculated, and the information signal generation / discrimination circuit 7 sets the recording time to M in the memory 5.
The tape remaining amount is similarly stored in the M1-1 area in areas 1-1, respectively (step 508), and the tape 13 is stopped (step 509). As a result, the subcode of this program is stored in the memory 5. The recording time is obtained by subtracting the recording start time from the recording end time, and the tape remaining amount is obtained by subtracting the recording time from the recordable time depending on the tape type.

Thereafter, if there is no instruction for list display, recording, or ejecting by the operation of the operation unit 9 by the user, FIG.
The operations of steps 414, 415, and 416 are repeatedly waited, and if there is an instruction to record the next new program during this waiting, the process proceeds from step 415 to step 411, and the recording process described in FIG. 5 is performed again. Is performed. In this recording processing operation, the subcodes of the title, genre, program start time, date, day of the week, program start position (time code), program end position (time code), recording channel, and recording time are in the M1-2 area of the memory 5. Memorized in. Hereinafter, the subcodes that are recorded each time a program is newly recorded are M1-3 area, M1-4 area of the memory 5,
Sequential sub storage areas are stored in association with respective programs, such as M1-5 area, ....

In this way, a predetermined program is recorded on the unused tape 13 and ejected (step 41).
6) After that, when another unused tape 13 is used again, the above operation is performed again from step 401, and the recording process shown in FIG. 5 is performed in recording process step 411. In this case, Has a tape number set to "2", which is recorded on the tape 13, and accordingly, the M2 area, the M2-1 area, and the M2-2 area in the memory 5 are recorded.
.. are reserved, and the subcodes of the program recorded on the tape 13 are stored in these areas.
After that, each time an unused tape is used, the tape number increases to “3”, “4”, ... And these are recorded on the tape, and at each time, the memory 5 stores a storage area and a sub storage. Areas are secured, and the subcodes of the programs recorded on the respective tapes are stored in these areas.

As a result, the tape numbers are recorded in the order in which they are used on all the tapes used for the first time in this VTR, and the subcode of the program recorded for each tape is stored in the memory 5. The tape number is stored as an index.

Next, the case of recording a program on the tape 13 on which this VRT has already been used will be described. Even in this case, starting from step 401, the user can use the tape 13
2 is inserted (step 403), the subcode recording area 21 of the track shown in FIG. 2 is read for this tape 13 (step 404). In this case, the tape number is read. That is, the reproduction signal from the sub-code recording area 21 is supplied to the information signal generating / determining circuit 7 through the recording / reproducing control circuit 3 and the information signal processing circuit 6 shown in FIG. 1, where the tape number is discriminated. It
Then, the subcode is read from the storage area or the sub storage area of the memory 5 corresponding to the tape number and displayed as a list on the display device, as described in FIG. 1 (step 406).

An example of this displayed list is shown in FIG. 6 with the tape number "5". Here, three programs have already been recorded, and the tape remaining amount is SP (standard recording).
It shows that it is 45 minutes in the mode and 90 minutes in the LP (long-time recording) mode. This makes it possible to determine whether or not the desired program can be recorded on this tape. Further, here, the user inputs a title when recording the first and second programs, and records the third program without inputting a title. In this example, when the title is not input, the data representing the recording channel is automatically stored in the memory 5 at the time of recording. Therefore, the recording channel number (8CH) is set in the third program. Is displayed.

If the sub data is to be updated (for example, the title of the third program is added in FIG. 6), the list shown in FIG. 6 is displayed.
The user may input new data using the operation unit 9 and give an instruction to update it (step 407). As a result, the information signal generation / discrimination circuit 7 creates a subcode based on this input data, and the desired subcode is rewritten in the memory 5 (step 408). By the rewriting of this subcode, the display content on the display device also changes.

Next, when the user designates a recording start position and performs a recording instruction operation, the system control circuit 8 determines whether the tape 13 should be fast-forwarded from the designated recording start position and the current position. Determine if it should be returned,
Cueing at the designated position is performed (step 410). After that, the process moves to the above recording process (step 411).

Next, the case of reproducing the recorded tape 13 will be described. Also in this case, the above step 40
The operations 1, 402, 403, 404, 405, 406 are performed, and a list as shown in FIG. 6 is displayed. When the user specifies a program to be watched and gives an instruction for reproduction, steps 407, 409, 412 to 41
Proceed to the reproduction processing operation of 3.

This reproduction processing operation will be described with reference to FIG.
First, when a desired program is specified from the display list as shown in FIG. 6, the time code recorded at the recording start position of this program is searched for (step 70).
1) Then, reproduction is started from that position (step 702). After that, when the time code recorded at the recording end position of this program is detected (step 70)
3), the tape 13 is stopped (step 704), and the reproduction processing operation (step 412) ends. If there is no instruction to display the list (step 414), step 4
Proceed to step 15 and proceed to the above processing.

Of course, when it is desired to reproduce another program recorded on this tape, a reproduction process (step 413)
After the above, the user may perform a list display instruction operation (step 414) using the operation unit 9. As a result, the process returns to step 406 again and the above operation is performed.

Here, the remaining time of the tape 13 will be described. When the tape 13 on which the tape number is recorded is inserted, the information signal generation / discrimination circuit 7 recognizes this tape number, and based on this tape number, the type of the tape 13 from the memory 5, the remaining amount of the tape 13 and each program. Recording time data of
Read out together with other data such as date and program start time. Then, when a new program is recorded on the tape 13 or the recorded program is erased, the amount of the tape 13 to be added or subtracted is calculated by the same calculation as described above, and the tapes used so far are calculated. The new tape remaining time is calculated by adding / subtracting the obtained tape amount to the 13 remaining amount, and the data of the tape remaining time of the memory 5 is rewritten to the data of the new tape remaining. As a result, the memory 5 always stores the latest data of the remaining amount of the tape 13.

Next, the cueing of the designated position will be described. Subcode area 21 of recorded portion of tape 13
The time code is always recorded on the disc, and the information signal generating / discriminating circuit 7 operates in modes such as reproduction, search, fast forward and rewind.
Position of the tape 13 can be recognized. When the program to be searched for is designated by the time code, the information signal generating / determining circuit 7 reads the time code at the start position and the end position of each program from the designated sub storage area of the memory 5. Then, the time code value at the recording start position of the program to be cued is compared with the current time code value, and the mode such as rewinding or fast-forwarding is determined according to the size relationship, and the system A command is sent to the control circuit 8. Then, rewinding or fast-forwarding is performed, but when the time code value at the recording start position of the designated program to be cued matches the current time code value, the cuing is completed and the tape 13 Stop or start playback.

Next, the function of displaying the contents of the plurality of tapes 13 will be described. When the user gives an instruction to display a list by operating the operation unit 9 (step 40 in FIG. 4).
1), the VTR first displays a screen showing a list display method as shown in FIG. 8 and requests the user to input the display method. In this display, if the "tape list" is selected, the information signal generation / discrimination circuit 7 reads the tape numbers corresponding to all the storage areas secured in the memory 5, and as shown in FIG. All tape numbers are displayed as a tape 13 list. When the user sees this and specifies the desired tape number, the contents of the tape 13 as shown in FIG. 6 are displayed for this tape number. Then, when the user operates the operation unit 9 to specify "order of recording date and time", the information signal generating / determining circuit 7 reads out the dates of all programs stored in the memory 5 and compares them.
As shown in FIG. 10, the program list is displayed in order from the program with the latest date. The program list may be displayed in another order such as “by genre” or “in alphabetical order”.

As described above, in this embodiment, the tape 13
When is inserted, the subcode recorded on the tape 13 is automatically read, the tape number is recognized, and a list of programs as shown in FIG. 6 is displayed.
You can immediately know what is recorded on the, you can easily know the program you want to play and the program you want to delete when it is no longer needed, and you can easily know what kind of program is recorded on the tape. it can.

Since the remaining time of the tape 13 is displayed, it is necessary to judge whether the program to be recorded can be recorded or whether the recording mode should be the standard / long time mode. You can

Further, it is possible to perform automatic cueing reproduction by designating a displayed program, and cueing by designating a recording location.

Furthermore, since the contents of a plurality of tapes 13 are stored in the memory 5, the program list of different tapes 13 can be displayed in a short time, and in the order of recording date and time, in the order of Japanese syllabary, etc.
The screen can be displayed as shown in FIG. 10 in a format that is easy to search, and since the tape number is recorded in the subcode area 21 of the tape 13, a conventional circuit for reading the bar code is not required. It is unnecessary.

FIG. 11 is a reproduction processing step 4 in FIG.
13 is a flowchart showing another specific example of FIG.
The same reference numerals are given to the steps corresponding to.

This processing differs from the processing shown in FIG.
This is to add a process (1101) of adding a reproduction mark. This reproduction mark is information indicating that the program has been reproduced, and this information "reproduced" is also stored in the memory 5. FIG. 12 shows a list display by subcodes for this tape when such a reproduction mark is added.
Shown in. In the figure, the mark * is a reproduction mark, which indicates that the third program has been reproduced. This allows you to easily distinguish between programs you have seen and programs you have not seen,
This is convenient, for example, when the recorded tape 13 is not intended to be permanently stored (when a program is viewed once, it is erased and a new program is recorded).

13 and 14 are flowcharts showing another specific example of the operation of this embodiment. This specific example is different from the operation shown in FIG. 4 in that the subcode area 21 of the track of the tape 13 is recorded with date, time, day of week, cue signal, channel, recording mode, tape 13
The data representing the type, title, and genre is recorded together with the tape number and the time code (step 411 '), and when the tape is inserted, such data can be read and stored in the memory 5. That is, (1301, 1302) is added.

First, the recording process (step 411 ') in FIG. 13 will be described. This process is basically the same as the process shown in FIG. 5, except that step 50 in FIG.
5 is different from the process shown in FIG. 5 in that a different step 505 ′ is performed instead of the process of FIG. That is, similarly to the processing shown in FIG. 5, the processing of steps 501 to 504 is performed,
When recording the date, time, day of the week, subcodes such as time code and recording channel in the memory 5,
Next, the process proceeds to step 505 ', and after the recording is started, for example, 1
Subcode area 21 of each track of tape 13 for 0 seconds
The cue signal is recorded on the tape 13, and from the start of recording to the end of recording, the date, time, day of the week, recording channel, recording mode, 13 types of tape, title, genre, tape number, time code, and tape 13 are recorded. It is recorded in the subcode area 21 of each track (step 50).
5 '). The subsequent processing is the same as in FIG.

The tape 13 on which such a subcode is recorded is basically subjected to the processing shown in FIG. 4, but this tape 13 is inserted (step 403). Is read (step 404), and it is judged whether or not there is a tape number (step 405).
Data reading processing is instructed by the operation unit 9 (step 1
301), and shifts to the data reading process (step 130).
2). If this instruction is not given, as in FIG. 5, step 40
Go to 5.

Now, the data reading process of step 1302 will be described with reference to FIG. First, when the above-mentioned data reading process is instructed, a storage area or a sub storage area for the tape number detected in the memory 5 is set. Then, the tape 13 is rewound to the beginning (step 150
1) After that, while the subcode is reproduced from each track, the fast-forwarding is performed until the above-mentioned cue signal is reproduced and detected (steps 1503 and 1504). If this is not detected even at the end of the tape, the remaining tape amount is calculated, this is stored in the set sub storage area of the memory 5 (step 1505), and the tape 13 is stopped (step 1506). Go to step 405.

When the cueing signal is detected during fast-forwarding of the tape 13 (step 1503), it is recognized as the recording start point of the program, and the time code recorded in the subcode recording area 21 at that position, The date and time data is read and stored in the above-mentioned set storage area of the memory 5 (step 1507). Then, after that, the day of the week, the channel, the recording mode, and the tape 1 recorded in the subcode recording area 21 until the next cueing signal is detected.
Data of three types, titles, and genres is read out and stored in the sub storage area set in the memory 5 (step 1508). When the next cue signal is detected (step 1509), this is recognized as the end point of the program and the start point of the next program, and the time code of this end point is detected for the programs detected so far. It is stored in the set sub storage area of the memory 5 as an end point, and the recording time of the program is calculated from the data of the time of the start point and the end point, and the set sub of the memory 5 is set. It is stored in the storage area (step 1510). Then, for the program recorded next, steps 1507 and 15
The processing of 08 is performed. Hereinafter, this operation is performed every time the cueing signal is detected.

After the processing of step 1508, when the cue signal is not detected (step 1509), a series of processing of steps 1509, 1511 and 1513 is repeated, and thereafter, when the subcode is not detected and a predetermined time or more elapses. At step 1511, the program is recognized as the end point of the program, and the last detected time code is set as the time code of the end point of the program detected so far and stored in the corresponding sub recording area of the memory 5. At the same time, the recording time of this program is calculated from the data of the start point and the end point, and is stored in the sub storage area set in the memory 5 (step 1512). And
Steps 1503 and 1504 are repeated until the end of the tape is reached, and the process proceeds to steps 1505 and 1506, as shown in FIG.
Go to step 406 of. It should be noted that when the subcode is no longer detected but the tape end is detected within the above-described predetermined time (step 1513), it is recognized that the program has ended in this case as well, and the process similarly proceeds to step 1512.

When a storage area or sub storage area is already set in the memory 5 for the tape number of the inserted tape and sub codes are stored in them, that is, when the inserted tape is If the VTR is used for recording, step 150 in FIG.
In 5, 5, 1507, 1508, 1510, and 1512, the data is rewritten in the memory 5.

As described above, according to this example, the main data recorded in the subcode area 21 of the tape 13 is recorded.
Since the data required for displaying the list can be read out and calculated and stored in the memory 5, even if the data in the memory 5 cannot be used due to a VTR failure or replacement, or a similar function. Even when the tape 13 recorded by a VTR having a record (capable of subcode recording) is reproduced, the data usable in the memory 5 can be stored.
It becomes possible to display the list as shown in FIG. 6 and FIG. 10 and to set the same condition as the recording of the desired program such as the beginning of the desired program.

There is also a case where some of the already recorded programs are recorded by other VTRs. Even in such a case, by performing the data reading process (step 1302), the data for the program recorded in another VTR is also registered in the memory 5 and can be handled in the same manner.

[0065]

As described above, according to the present invention,
When the tape 13 is inserted, the subcode recorded on the tape 13 is automatically read, the tape number is recognized, and the list of recorded programs is displayed. You can know immediately.

Since the remaining time of the tape 13 is displayed, it is determined whether the program to be recorded can be recorded or whether the recording mode should be the standard / long time mode. be able to.

Further, it is possible to specify the displayed program for automatic cue playback, and to specify a recording location to cue the location.

Furthermore, since the contents of a plurality of tapes 13 are stored, the program list of different tapes 13 can be displayed on the screen in a short time and in a format that is easy to search, such as recording date / time order or Japanese syllabary order. Since the tape number is recorded on the tape 13, a circuit or the like for reading the bar code as in the conventional case is unnecessary.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a magnetic recording / reproducing apparatus according to the present invention.

FIG. 2 is a schematic diagram showing a recording pattern of tracks on the tape in FIG.

3 is a block diagram showing a specific example of a character display control circuit in FIG.

FIG. 4 is a flowchart showing a specific example of the operation of the embodiment shown in FIG.

5 is a flowchart showing details of recording processing step 411 in FIG.

6 is a diagram showing an example of a list display screen for inserted tapes displayed in list display step 406 in FIG.

FIG. 7 is a flowchart showing details of a reproduction processing step 413 in FIG.

8 is a diagram showing an example of one content displayed by an all list display step 401 in FIG.

FIG. 9 is a diagram showing an example of other contents displayed by the all list display step 401 in FIG.

FIG. 10 is a diagram showing an example of still another content displayed by the all list display step 401 in FIG.

11 is a flowchart showing details of another example of the reproduction processing step 413 in FIG.

12 is a diagram showing an example of contents displayed by a list display step 406 in FIG. 4 with respect to the tape subjected to the reproduction processing step 413 in FIG.

13 is a flowchart showing another operation of the embodiment shown in FIG.
It is a chart.

FIG. 14 is a flowchart showing details of recording processing step 411 'in FIG.

FIG. 15 is a data read processing step 1 in FIG.
3 is a flowchart showing the details of 302.

[Explanation of symbols]

 1 Character display control circuit 2 Video signal processing circuit 3 Recording / reproduction control circuit 4 Character signal generation circuit 5 Memory 6 Information signal processing circuit 7 Information signal generation / discrimination circuit 8 System control circuit 9 Operating unit 10, 11 Rotating magnetic head 12 Rotating cylinder 13 Magnetic tape 21 Subcode recording area

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nao Horiuchi 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture

Claims (6)

[Claims] 1. A magnetic recording / reproducing apparatus capable of recording and reproducing a video signal and information for retrieval on a magnetic tape, a means for recording and reproducing a tape number on the magnetic tape, and a plurality of means. Storage means for storing data indicating the recorded content of the magnetic tape in an area set corresponding to the tape number; and means for reading and displaying the data of the recorded content from the area corresponding to the tape number of the storage means A magnetic recording / reproducing apparatus comprising: 2. The magnetic recording / reproducing apparatus according to claim 1, wherein the data of the recorded contents can be displayed in the order of recorded dates. 3. The magnetic recording / reproducing apparatus according to claim 1, wherein the fact that the program recorded on the magnetic tape is reproduced is stored in the storage means and is displayed on the display means. 4. The magnetic recording / reproducing apparatus according to claim 1, wherein the recordable time of the magnetic tape is calculated, stored in the storage means, and read out and displayed. 5. The magnetic device according to claim 1, wherein the time code of the start position of the recordable portion of the magnetic tape is stored in the storage means, and the recordable portion is automatically searched for. Recording / playback device. 6. The recording medium according to claim 1, wherein the recording content data is recorded on the magnetic tape, the recording content data is reproduced from the magnetic tape, and the reproduced recording content data is reproduced. A magnetic recording / reproducing apparatus having means for storing in a predetermined area of the storage means.