JPH03148978A - Picture-recorded contents confirmation system for video image reproducing device - Google Patents

Abstract

PURPOSE:To quickly execute preparation work for confirming a picture-recorded program by writing a still picture video image outputted from a reproducing part in a video field memory circuit at the time of a write mode, and simultaneously, reading the above-mentioned still picture video image at the time of a read mode. CONSTITUTION:When the write mode is set up by a memory control circuit 7, the video field memory circuit 4 A/D-converts the still picture video signal of one field portion, and writes it in the first storage area of a first memory chip. At the time of the confirmation of picture-recorded contents, the memory control signal S7 of the read mode is outputted to the memory control circuit 7. Thus, a device is set in the reed mode, and the still picture data of the first storage area is read out of a memory chip corresponding to a cassette number. Then, after being D/A-converted, it is outputted to a video signal output circuit 3 as the still picture video signal. Accordingly, each head scene can be displayed at real time on a display device.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to the content (program) recorded on a videotape.
The present invention relates to a recording content confirmation system in a video playback device for confirming what kind of content is recorded.

<Prior art> When checking the recorded content of a videotape using a conventional video playback device, the videotape cassette is loaded into a deck, and the playback image is displayed on a display device at high speed while being checked by fast-forwarding or rewinding. There is.

However, each time you want to check the recorded content, you have to fast-forward or rewind it, which takes a very long time. It had become something of a nuisance.

One possible method for solving this inconvenience is to use an automatic cue function.

This automatic cueing function consists of: ■ preparatory work of writing a cueing signal, ■ automatic stopping upon detecting the cueing signal, and ■
Normal regeneration is based on three processes.

During playback or recording, write a cue signal to the videotape at the point you want to check later (generally the title section, which is the beginning of each program), and when checking the recorded program, When performing fast-forward playback or rewind playback in automatic cueing mode, the running of the tape is stopped when the cueing signal is detected. By playing back from that point, you can check the TJ video program. The tape automatically stops at the cue signal, so there is no need to keep looking at the screen to confirm.

Problems to be Solved by the Invention> However, in order to write a cue signal in preparation for checking a recorded program, it is necessary to set the playback mode to normal playback mode. After locating the first scene, it is necessary to switch to normal playback mode, and if a large number of cue signals are written, the mode must be switched many times, which is very time-consuming.

In addition, the tape must be run in order to find the beginning, and this also takes a considerable amount of time.

The present invention was devised in response to these circumstances, and aims to quickly perform preparation work for checking recorded programs, and to read out the leading scene in real time during actual checking. shall be.

<Means for Solving the Problems> In order to achieve the above object, the present invention has the following configuration.

That is, the recorded content confirmation system in the video playback device of the present invention has a video field memory circuit with a storage capacity for multiple fields, and a playback circuit that is in the high-speed playback mode by operating the memory key in the write mode. a reproduction ill-in circuit that switches over time to a still image reproduction mode; and a reproduction ill-in circuit that writes a still image outputted from the reproduction circuit to the video field memory circuit by operating the memory key in a write mode; The present invention is characterized by comprising a memory I control circuit that reads out still images written in the video field memory circuit from the video field memory circuit by operating a memory key.

Effect〉 The effects of the above configuration of the present invention are as follows.

0 In the writing mode of this system, when the playback circuit is in high-speed playback mode and the playback video is being played back at high speed on the display device, when the first scene of a program that you want to check later is displayed, press the memory key. operate. Then, by the action of the playback control circuit, the playback circuit switches from the high-speed playback mode to the still image playback mode for a certain period of time, and the memory control circuit enters the write mode, and the still image image at that time is written into the video field memory circuit. After a certain period of time has elapsed, the reproducing circuit returns to high-speed reproducing mode again. Then, while playing back at high speed on the display device, programs that you want to check later are displayed one after another.If you operate the memory key each time the first scene of each program appears, you can see a still image corresponding to the first scene of each program. Images are sequentially written into the video field memory circuit.

In this way, it is possible to automatically switch the playback circuit to still image playback mode, which is necessary for writing the first scene of each program you want to check, by operating the memory key while watching the screen during high-speed playback. I'll come.

0 When the memory key is operated in the read mode of this system, the memory control circuit becomes ready for reading.
The still image of the first scene written in the video field memory circuit is read out and displayed on the display device. Each time you operate a memory key,
Still images of the first scene of the next program are read out and displayed one after another on the display device. Therefore, it is possible to check what kind of program has been recorded on the videotape, but the video field Since the still image of the first scene is written in the memory circuit, the written still image is independent from the videotape. In other words, reading and displaying still images are performed in real time at the same time as the memory key is operated, without running the video tape.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing the electrical configuration of a recorded content confirmation system in a video playback device.

As shown in the figure, the reproduction fJ [1 circuit l is the reproduction key K
1. 2. to search key. A playback control signal 31 is output to the playback circuit 2 based on each operation signal of 3 to the rewind key or 4 to the stop key, and a still image playback control signal S8 input by the operation of 6 to the memory key is sent to the playback circuit 2. is configured to print. The reproducing circuit 2 is configured to perform a reproducing operation, a search operation, a rewinding operation, or a stop according to each operation signal indicated by the inputted reproducing control signal Sl, and perform a still image reproducing operation according to the still image reproducing control signal S8. During playback and search operations, the reproduced video signal S2 is output to the video signal output circuit 3 and the video field memory circuit 4, and in the tape running state, the counter information signal S3 is output to the counter circuit 5. It is composed of

The counter circuit 5 performs a counter operation based on the input counter information signal S3, displays the count value on a display section (not shown), and outputs a count value signal S4 to the count value/cassette number memory circuit 6. is configured to do so. Further, this counter circuit 5 is configured to reset the count value by inputting a counter reset signal S5 outputted by operating the counter reset key 5. The counter reset key 5 is configured to output a memory operation start preparation signal S6 to the memory control circuit 7 for setting the memory control circuit 7 to a write mode by its operation. A memory key 6 outputs a memory control signal S7 specifying write mode or read mode to the memory control circuit 7, and also outputs a still image playback operation control signal S.
8 to the reproduction control circuit l.

The cassette number key 7 is a set of a plurality of numerical keys, and the cassette number signal S9 is memorized and sent to the control circuit 7 by key operation corresponding to the cassette number arbitrarily determined by the user for each videotape cassette. The count value/cassette number memory circuit 6 is configured to output the count value/cassette number memory circuit 6.

The memory 114 control circuit 7 counts (a/cassette number, The memory control circuit 7 is configured to output the still image video signal S2 from the reproduction circuit 2 to the video field memory circuit 4 in the write mode. In addition to controlling the A/D conversion and writing, the count value indicated by the count value signal S4 from the counter circuit 5 and the cassette number one signal S input from 7 to the cassette number one key
It is configured to perform control to write the cassette number indicated by 9 into the count value/cassette number memory circuit 6. In addition, in the read mode, a cassette number signal S9 is output to the memory control circuit 7, and the still image video data of the corresponding cassette number is D/A converted and read out as a still image video signal S2''. At the same time, a cassette number signal S9 is sent to the count value/cassette number memory circuit 6.
is output, and control is performed to read out a generated signal SIG of the corresponding cassette number, count value, and storage area number.

The video field memory circuit 4 is! It has a large number of memory chips into which still image video signals S2 are written in field units.

The character generator circuit 8 generates each character signal 311 of the input count value, cassette number, and storage area number, and a blanking signal S12 for synthesizing each of these character signals Sll into a still M video signal S2''. , and are configured to output these to the video signal output circuit 3.The video signal output circuit 3 outputs the reproduced video signal S2 or the still image video signal 32 from the reproduction circuit 2 to the video output terminal 9, A composite video signal 3 that is synthesized with the still image video signal 32'' from the video field memory circuit 4, the character signal 511 from the character generator circuit 8, and the blanking signal S12.
13 to the video output terminal 9. The video output terminal 9 is connected to a display device (not shown).
Brown if) is now connected.

Next, the operation of the recorded content confirmation system in the video playback apparatus of this embodiment will be explained.

[11 Storing still images of the first scene of each program ■ Load the videotape cassette you want to know what kind of program is being recorded into the deck.

By repeatedly pressing 5 on the counter reset key, a counter reset signal S5 is output to the counter circuit 5, and the count value of the counter circuit 5 is reset to zero (00#00 minute OO selection), and the memory control circuit 7 Outputs the memory operation start preparation signal S6 to prepare for setting the memory control signal 57 to the write mode when the memory key 6 is operated later, and also outputs the memory operation start preparation signal S6 to the video field memory circuit 4 and the count value/cassette. Prepare to designate the first storage area as the first writing area in each of the number memory circuits 6. Also, by pressing the counter reset key 5, the memory 1m1
11 Set the circuit 7 to write mode.

0 The index of the cassette loaded first has the number of that cassette attached in advance. The cassette number is memorized as the cassette number signal S9 by operation 7 in the cassette number key.
It is manually input to the control circuit 7 and stored in the built-in register.

0 By operating the playback key Kl, the playback control signal St instructing the playback operation is output from the playback control circuit 1 to the playback circuit 2, and the playback video signal S2 in the normal playback mode played from the videotape by the playback circuit 2 is output. is output to the video signal output circuit 3, and after being amplified by the video signal output circuit 3, the video is reproduced by a display device (not shown) via the video output terminal 9.

0 During this video playback, if you operate the search key 2, the playback control circuit l will instruct the search operation.
＃lI? The 11I signal S1 is output to the reproduction circuit IR2, and the reproduced video signal S2 in the high-speed reproduction mode is reproduced at high speed on the display device in the same manner as described above.

These reproduced video signals S2 are also output to the video field memory circuit 4, but since there is no write command from the memory control circuit 7, no writing is performed.

0 During this time, a counter information signal s3 corresponding to the running distance of the tape is outputted from the reproduction circuit 2 to the counter circuit 5, and the count value counted by the counter circuit 5 is displayed on a display section (not shown). This display is performed with a running time corresponding to the tape running amount. Moreover, the count value signal S4 is the count value/cassette number.
It is also output to the memory circuit 11i6, but since there is no write command from the memory circuit t41B circuit 7, no writing is performed.

Users can watch the video being played back at high speed on a display device and record it on videotape! ! When the memory key KG is operated at the timing when the first scene of the first program being displayed (mainly the title of that program) is displayed, the still image reproduction f4 control signal S8 is output to the reproduction Ma11 circuit l. , a memory control signal S7 of a write command is output to the memory control circuit 7. The playback iiIN control circuit 1 transfers the input still image playback control signal S8 to the playback circuit 2, and the playback circuit 2 is set to the still image playback mode for a certain period of time, and the still image at the timing when the memory key 6 is operated. The video signal 32 is sent to the video signal output circuit 3. The image is outputted via the video output terminal 9 and displayed as a still image on a display device.

At the same time, a memory control signal S7 for a write command is output from the memory w control circuit 7, and the video field memory circuit 4 and the count value/cassette number memory circuit 6
and is set to write mode. Then, the video field memory circuit 4 A/D converts the still image video signal 32 for l fields to the first
Write to the th storage area.

In addition, the counter information signal S3 does not change during the still image playback mode, but the counter information signal S3 at that point
3 is counted by the counter circuit 5, and the count value signal S4 is sent to the count value/cassette number memory circuit 6.
It is output to .

The count value/cassette number memory circuit 6 associates the count value indicated by the count value signal S4 with the cassette number stored in the internal register of the memory 1118 circuit 7 according to the setting of the write mode, and stores the first one. write to the first storage area of the memory location.

■ The still image playback mode for a certain period of time is canceled and returns to high-speed playback mode. Hereafter, repeat the operations from ■ to ■, that is, set 6 to the memory key at each timing when the first scene of the i-th (i=2.3...) program recorded on the videotape is displayed. By operating, the A/D conversion data of the still image video signal S2 of the scene is sequentially written to the i-th storage area of the first memory chip of the video field memory circuit 4, and the count value at that time is written to the cassette. The data is sequentially written in the i-th storage area of the first memory location of the count value/cassette number memory circuit 6 in association with the number.

When the writing process as described above is completed for one video tape cassette, the same writing process is performed for the next tape cassette.
For one cassette, still image data of the first scene of each program and a count value associated with the cassette number are written into the video field memory circuit 4 and the count value/cassette number memory circuit 6.

As described above, it is possible to write the still image video signal S2, etc. in preparation for checking the recorded program in the high-speed playback mode, and in the high-speed playback mode without changing the mode. Even if there are many initial scenes that need to be done, the preparation work can be carried out very efficiently.

Note that in the above explanation, writing was performed in high-speed playback mode, but even in normal playback mode, the still image video signal S2
etc. can be written.

[111 Confirmation of Recorded Content■ It is assumed that the playback circuit 2 has been stopped by pressing the stop key 4. In this state, the cassette number of the video tape cassette whose recorded contents are to be confirmed is inputted into the memory control circuit 7 by operating the cassette number key 7. The tape cassette may be removed from the deck, another tape cassette may be loaded in the deck, or the tape may be rewound (not played).

[Co., Ltd.] When confirming the recorded content, the counter reset key is not pressed to 5, but this sets the memory control circuit 7 to the read mode.

Then, by operating the memory key 6, a memory control signal S for the read mode is sent to the memory control circuit 7.
Outputs 7. As a result, the video field memory circuit 4 and the count value/cassette number memory circuit 6 are set to the read mode. Then, in the video field memory circuit 4, the still image data (the first leading scene of the corresponding tape cassette) in the first storage area from among the memory chips corresponding to the cassette number is read out and D/A converted. Later, still image video signal S
2'' to the video signal output circuit 3.

At the same time, count value/cassette number memory circuit 6
At , the count value of the first storage area from among the memory locations corresponding to the cassette number and the generation signal SlO of the corresponding cassette number and the number of the storage area are read out and output to the character generator circuit 8.

The character generator circuit 8 receives each character signal 311 of the inputted currant value, cassette number, and storage area number, and these character signals Stt.
A blanking signal S12 for deleting the signal portion of the still image video signal 32'' corresponding to the location to be displayed on the screen of the display device is output to the video signal output circuit 3.

0 The video signal output circuit 3 outputs a manually generated still image video signal 8.
2″ and count value 5 cassette number.

Each character signal Sll of the storage area number and the blanking signal 512 are synthesized. As a result, the blanking signal 312 portion is deleted from the still image video signal 82'', and each character signal Sl
l will be inserted. Then, this composite video signal S13 is outputted to the display device via the video output terminal 9 and displayed on the screen, and the display of this composite video signal S13 is performed in real time almost at the same time as the memory key 6 is operated. .

An example of this screen is shown in Figure 2. This screen displays a still image of the first scene of the first program recorded on the videotape cassette corresponding to the selected cassette number, and a time display format. A count (direct number), cassette number, and storage area number are displayed, and by looking at this screen, the user can roughly know what kind of program is the first program on the tape cassette.

0 By repeatedly pressing 6 on the memory key,
Through the same operation as above, the still image of the first scene of the first (i=2゜3...) program recorded on the same videotape cassette, the corresponding count value, and the cassette The number and memory area number are displayed on the screen. By operating the memory keys 6 one after another in this way, it becomes possible to get an idea of the approximate contents of all the programs recorded on that tape cassette.

For the second and subsequent programs, by memorizing the count value in the index of the tape cassette, it can be effectively used later when searching for the beginning of the program.

Incidentally, since the display of the first scene of each program can be performed even when the videotape is being rewound (however, it is not being played back), it is possible to start cueing quickly.

As described above, when checking a recorded program, there is no need to run the videotape at all, and the still image video signal 82'' is read out from the video field memory circuit 4 every time the memory key is operated, and each leading scene is displayed. It can be displayed on the device in real time.

In the above embodiment, the character signals 511 of the count value, cassette number, and storage area number are combined with the read still image video signal 82'' and displayed on the display device. One or two of the number and storage area number may be omitted, or all of them may be omitted.

<Effect of the invention> According to the present invention, the following effects are achieved.

In other words, switching the playback circuit to the still image playback mode necessary for writing the still image of the first scene of each program you want to check, and writing the still image to the video field memory circuit during high-speed playback. This can be done automatically by operating the memory keys while looking at the screen, and there is no need to switch to normal playback mode each time you write, so you can quickly prepare for checking the recorded content.

Moreover, since the still image video of the first scene of each program is written to the video field memory circuit, the written still image video can be made independent of the videotape, and the still image video that is written to the video field memory circuit can be made independent of the video tape. Both still images of the first scene can be read out simply by operating the memory key without running the videotape. Therefore, it is possible to confirm what kind of program is recorded on the videotape in real time at the same time as the memory key is operated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the electrical configuration of a recorded content confirmation system in a video playback device according to an embodiment of the present invention;
FIG. 2 is a diagram showing the screen display state of the display device. l...Reproduction control circuit, 2...-Reproduction circuit, 4...-Video field memory circuit, 7...Memory control circuit, K
6...Memory key

Claims (1)

[Claims] (1) A video field memory circuit with a storage capacity for multiple fields, and a playback control circuit that switches the playback circuit in high-speed playback mode to still image playback mode for a certain period of time by operating a memory key in write mode. , by operating the memory key in a write mode, the still image output from the playback circuit is written into the video field memory circuit, and by operating the memory key in a read mode, the still image video output from the video field memory circuit is written into the video field memory circuit. What is claimed is: 1. A recording content confirmation system for a video playback device, comprising: a memory control circuit for reading out still image video stored in the video playback device.