JPH03230688A - Video image printing system equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a video image printing system device suitable for reliably printing out a desired image among images recorded on a videotape without failure. Regarding.

(Prior Art) Traditionally, a video tape recorder is connected to a commercially available video image printing device (so-called video printer).
When an image that you want to make a hard copy of appears on the screen while looking at the screen, you operate the copy button on the video printing device to print out the desired image from among the images recorded on the videotape. ing.

(Problems to be Solved by the Invention) However, with the conventional video image printing device, the copying time is as long as 60 seconds, and video tapes often record moving images; If the timing of pressing the copy button is even slightly off, you will not be able to get the desired image on the hard copy, and often you will not be able to reliably print out the desired image from the videotape, resulting in However, there are cases where the printout operation has to be repeated, which is inconvenient due to the long copying time.

Therefore, the purpose of the present invention is 1. To provide a video image printing system device suitable for surely printing out an image desired for hard copy without failure.

(Means for Achieving the Object) In order to achieve the above object, a video image printing system device according to claim 1 of the present invention is provided for both recording and reproduction, which is capable of performing after-recording on a recorded videotape. a video tape recorder; a vertical synchronization signal separation circuit for separating a vertical synchronization signal included in the playback video signal when a playback video signal is input; and a designation switch for specifying an image desired to be printed as a hard copy. and a vertical synchronization signal separated by the vertical synchronization signal separation circuit, which is a vertical synchronization signal used when moving from an image to the next image for which a hard copy is desired, and the specified switch, and a hard copy is desired. and a copy timing signal generator for recording a copy timing signal on an audio recording band of a videotape in association with an image to be recorded.

In order to achieve the above object, the video image printing system device according to claim 2 of the present invention includes a video tape recorder for both recording and playback, which is capable of performing after-recording on a recorded video tape, and a playback video signal. has a vertical synchronization signal separation circuit for separating a vertical synchronization signal contained in the input and played video signal, and a designation switch for designating an image desired to be hard-copied; Based on the vertical synchronization signal separated by the signal separation circuit, which is used when moving from an image for which a hard copy is desired to the next image, and the specified switch, a hard copy is associated with the desired image, and the videotape is recorded. a copy timing signal generator for recording a copy timing signal on an audio recording band; a copy timing detector for detecting a copy timing signal recorded on the video tape and outputting a copy timing signal; a one-frame memory for storing a reproduced video signal obtained by reproducing a videotape for each frame, and for freezing the reproduced video signal corresponding to an image desired to be hard-copied based on the copy timing signal; - a video image printing device that receives the reproduced video signal stored in the frame memory and starts hard copying based on a copy timing signal recorded on the videotape. .

(Operation) The video image printing system device according to the present invention first associates a hard copy with a desired image and records a copy signal on the audio recording band of the videotape.

Next, the videotape on which the copy timing signal has been recorded is played back, and the image desired to be hard-copied is frozen (turned into a still image) in one frame memory based on the copy timing signal, and at the same time, the frozen playback video signal is is input to the image printing apparatus, and the copying operation of the image printing apparatus is started.

(Example) Hereinafter, an example of a video image printing system apparatus according to the present invention will be described with reference to the drawings.

In the first wI, l is a video tape recorder having both recording and reproducing functions, and 2 is a copy timing signal generator for specifying a hard copy image.

The video tape recorder 1 has a switch 3 for performing after-recording on the audio recording band of the already recorded video tape. When performing after-recording, for example, set a recorded video cassette (not shown) in the video tape recorder 1, connect an audio device to the audio input terminal 4 (or connect it to the microphone input terminal (not shown) Connect the microphone), and when the screen you want to perform after recording appears during playback, press the pause button, turn on switch 3 to enter the after recording state, and record the audio etc. on the video tape as shown in Figure 2. 5 is recorded in the PCM recording band (voice recording band) 6. Since this after recording is well known, a detailed explanation thereof will be omitted. In addition, in Figure 2, 6
' is a video track, and there are also video tape recorders that can perform after-recording in addition to PCM recording band 6.

The copy timing signal generator 2 includes a vertical synchronization signal separation circuit 7, flip-flops FF+, FF2, and FF3, as well as a Q switch, an AND circuit, and an oscillation circuit, which will be described later. The vertical synchronization signal separation circuit 7 is connected to the video signal output terminal 8 of the video tape recorder 1, and receives the video signal Vi shown in FIG. 1113 (a). The vertical synchronizing signal separation circuit 7 separates the vertical synchronizing signal VD and outputs the third vertical synchronizing signal VD.
As shown in Figure (b), it has a function of outputting a glock pulse VD' based on the vertical synchronization signal VD.

An input terminal D1 of the flip-flop FF+ is connected to a movable contact 10 of a Q switch 9 as a designation switch for designating an image desired to be hard-copied. This Q
The switch 8 is of the self-resetting type. Movable contact 10
is grounded via a resistor SIR, and a power supply voltage VDD is applied to a fixed contact 11 of the Q switch 9. Clock pulse VD' is applied to flip-flops FF+, FF2, F
The signals are input to clock input terminals CL+, Cu2, and CLs of Fs, respectively.

The output terminal Q1 of the flip-flop FF is connected to the input terminal D2 of the flip-flop FF2.

The output terminal Q2 of the flip-flop FF2 is connected to the input terminal D3 of the flip-flop FFs and one input terminal 13 of the AND circuit 12. The non-inverting output terminal Qs of the flip-flop FF3 is the low input terminal 14 of the AND circuit 12.
It is connected to the. The AND circuit 12 functions as the first gate G+. Flip-flop FF1, FF2, FF
3, when the input terminals D1, D2, and D3 are at H level, and there is a clock input to the clock input terminals CLl, Cu2, and CLll, the output terminal Q1% Q2,
The output state of Qs (and non-inverting output terminal 7: L11σ2, i:h) is inverted.

The output terminal 15 of the AND circuit 1z is connected to one input terminal 17 of the AND circuit 16. An oscillation circuit 19 is connected to the low input terminal 18 of the AND circuit 16. The output terminal 20 of the AND circuit 16 is connected to the audio input terminal 4 here. The AND circuit 16 functions as a second gate, and the 0 oscillation circuit 19 plays a role of generating a Q signal as a copy timing signal. Here, the oscillation frequency of this oscillation circuit 19 is 10 KHz. This Q signal is a freeze signal (still image instruction signal) that will be described later.
This signal is used as a start signal and is recorded in the PCM recording band 6 shown in Figure 2.
Writing to the CM recording band 6 will be explained with reference to circuit operation.

It is assumed that a video cassette is set in the video tape recorder 1 and that the video tape recorder 1 is playing back a video image. Suppose that in this state, you are looking at the screen and waiting for a screen on which you would like to make a hard copy to appear. Here, it is assumed that the image indicated by the symbol in FIG. 3(a) is a one-frame image for which a hard copy is desired.

In the initial state, the outputs of the output terminals Ql and Q2 of the flip-flops FF+ and FF2 are at L level, and the output of the non-inverting output terminal 3 of the flip-flops FFs is at H level.

Immediately after this image K appears on the screen, that is, before the image moves from the first field image to the second field image, when the Q switch 9 is turned on (see Fig. 3 (c)).
, the H level is input to the input terminal D1 of the flip-flop FF+, and the input terminal D1 maintains the H level. In addition,
The on duration of the second Q switch 9 is longer than the generation interval (approximately 1/60 second) of the vertical synchronization signal VD.

While the second Q switch 9 is turned on, a clock pulse V D + ' based on the vertical synchronization signal VD between the first field and the second field of the reproduced video signal for which hard copy is desired is applied to the clock input terminal CL+. is input. As a result, the output of the output terminal Q1 of the flip-flop FF+ changes from the L level to the H level as shown in FIG.
level. Output terminal Q1 of flip-flop FF+
When the output of the flip-flop FF2 goes to H level, the input terminal of flip-flop FF2 goes from L level to H level.

Therefore, the input terminal D2 holds the H level, and the clock pulse VD2' based on the vertical synchronization signal VD between the second field of the desired image and the first field of the next image is applied to the clock input terminal. When input to L2, the output of the output terminal Q2 changes from L level R1 to H REPJ as shown in FIG. 3(E). On the other hand, the flip-flop FF+ goes to the L level from the clock signal (when the pulse V D2' is input to the clock input terminal CL+, the output power τH of the output terminal Q1). Further, its input terminal D1φ also changes from H level to L level. Therefore, the flip-flop FF+ returns to its initial state when the vertical synchronizing signal VD corresponding to the first field of the next image is input to the input terminal D1.

By the way, the output of the output terminal 15 of the AND circuit 12 &
The third output is generated by the non-inverting output terminal port 3 of flip-flop FF3.
As shown in the figure (f), the H level is maintained, so
When the output of the output terminal Q2 of the flip-flop FFe goes from L level to H level, it becomes L as shown in FIG.
level to H level. As a result, the AND circuit 16 starts outputting the Q signal toward the audio input terminal 4. Therefore, recording of the Q signal meaning a copy timing signal is started on the PCM recording band 6 of the video tape 5. In other words, the Q signal corresponding to the image for which a hard copy is desired can be accurately written at a predetermined timing in association with the image for which a hard copy is desired.

Next, a clock pulse VD3' based on the vertical synchronization signal VD between the first field and the second field of the next image is generated.
is input to clock input terminals CL+, CLa, and CLa of flip-flops FF+, FFe, and FFs. Since the flip-flop FF+ has returned to its original state, its state will not change unless the Q switch 9 is turned on. Since the input terminal D2 of the flip-flop FF2 maintains the H level, the clock pulse V D s ' When input to the clock input terminal CL2, the output of the output terminal Q2 changes from the H level to the L level. As a result, flip-flop FF2 returns to its initial state.

On the other hand, the output of the non-inverting output terminal Q3 of the flip-flop FFs changes from the H level to the L level. Therefore, the output of the output terminal 15 of the AND circuit 12 changes from H level to L level. Therefore, the AND circuit 16 outputs the Q to the PCM recording band 6.
Stop writing signals. Therefore, the Q signal will be written to the PCM recording band 6 during the first field of the image following the image for which hard copy is desired (see Fig. 3).
(see h)).

Note that when the clock pulse V Da ' based on the vertical synchronizing signal VD when moving from the next image to the next image is input to the clock input terminal CLa of the flip-flop FFa, the non-inverting output terminal σ3 of the flip-flop FFa is input to the clock input terminal CLa of the flip-flop FFa. changes from L level to H level, and flip-flop FF3
returns to its initial state. This allows videotape 5
Writing of the Q signal to is completed.

In this embodiment, the hardcopy timing signal generator 2
Although the adapter device is formed separately from the video tape recorder 1, it can also be built into the video tape recorder 1.

Next, the case of hard copying will be explained with reference to FIGS. 4 and 5.

In FIG. 4, 21 is the copy timing signal detection amount;
22 is a video image printing device. The copy timing detection 1!21 is here formed separately from the video tape recorder 1 like the copy timing signal generation amount 2, but is formed integrally with the video tape recorder 1 or the video image printing device 22. The video tape recorder 1 may not be used for both recording and playback purposes, but may be used only for playback purposes.

Copy timing signal detection lI21 is Q signal detection circuit 2
3 and one frame memory 24. The video image printing device 22 includes a video signal input terminal 25 and a start signal input terminal 26. The Q signal detection circuit 23 is connected to the audio output terminal 27 of the video tape recorder 1. Further, the video signal output terminal 8 of the video tape recorder 1 is connected to the video signal input terminal 28 of the one frame memory 24. - The reproduced video output of the frame memory 24 is input to the video signal input terminal 25, and the Q signal detected by the Q signal detection circuit 23 is input to the one frame memory 24 and the start signal input terminal 26.

Therefore, when a video cassette is set in the video tape recorder 1 and put into playback mode, the image K desired to be hard-copied is stored in the one-frame memory 24 at a predetermined time as shown in FIG. 5(a). - Immediately after the image desired to be hard-copied is stored in the frame memory 24 and immediately before moving to the next image, the Q signal detection circuit 23
The Q signal is detected by (see Figure 5 (b)), -
The frame memory 24 is configured based on this Q signal as shown in FIG.
As shown in FIG.
starts hard copying based on the Q signal. Therefore, the image K stored as a still image in the -frame memory 24 can be printed out without failure.

Therefore, according to this embodiment, as long as the copy timing signal generation 82 is provided, the commercially available expensive It is possible to print out a desired image in hard copy without purchasing a video image printing device (effect) Since the present invention is constructed as described above, it is possible to reliably print out an image desired to be printed out in hard copy without failure. This has the advantage that it is suitable for

[Brief explanation of drawings]

Fig. 1 is a circuit diagram when a copy timing signal is written using the video image printing system device according to the present invention, Fig. 2 is a schematic diagram of a videotape, and Fig. 3 shows the operation of the circuit shown in Fig. 1. A timing chart for explanation; FIG. 4 is a circuit diagram when a copy timing signal is read out and a hard copy is made using the video image printing system device according to the present invention; FIG. 5 is an operation of the circuit shown in FIG. 4. Here is a timing chart to explain. 1... Video tape recorder 2... Copy timing signal generation amount 5... Video tape 6... PCM recording band (audio recording band) 7... Vertical synchronization signal separation circuit 9... Q switch ( Designation switch) 22...Video image printing device 23...Q signal detection amount 24...-Frame memory VD...Vertical synchronization signal Fig. 4

Claims (2)

[Claims] (1) A video tape recorder for both recording and playback that can perform after-recording on a recorded video tape, and a vertical recorder that receives a playback video signal and separates the vertical synchronization signal included in the playback video signal. It has a synchronization signal separation circuit and a designation switch for specifying an image for which a hard copy is desired, and the vertical synchronization signal separated by the vertical synchronization signal separation circuit is used to select the next one from the image for which a hard copy is desired. a copy timing signal generator for recording a copy timing signal in an audio recording band of a videotape in association with a desired image in a hard copy based on a vertical synchronization signal when moving to an image and the specified switch; Image printing system equipment. (2) A video tape recorder for both recording and playback that can perform after-recording on a recorded video tape, and a vertical recorder that receives a playback video signal and separates the vertical synchronization signal included in the playback video signal. It has a synchronization signal separation circuit and a designation switch for specifying an image for which a hard copy is desired, and the vertical synchronization signal separated by the vertical synchronization signal separation circuit is used to select the next one from the image for which a hard copy is desired. a copy timing signal generator for recording a copy timing signal in an audio recording band of a videotape in association with a desired image in a hard copy based on a vertical synchronization signal when moving to an image and the specified switch; a copy timing detector that detects a copy timing signal that is being displayed and outputs the copy timing signal; and a copy timing detector that stores one frame of a reproduced video signal obtained by playing back a video tape on which the copy timing signal is recorded. and a one-frame memory that freezes the reproduced video signal corresponding to the image desired to be hard-copied based on the copy timing signal; and the reproduced video signal stored in the one-frame memory is input, and the reproduced video signal is inputted to the video tape. A video image printing system apparatus comprising: a video image printing apparatus that starts hard copying based on a recorded copy timing signal.