JPH08163480A - Video signal processing unit - Google Patents

Abstract

PURPOSE: To surely fetch a desired image by giving a trigger to a storage means, receiving only the specified number of frames so as to conduct stop control thereby setting the number of frames. CONSTITUTION: A frame memory(FM) 8 is a memory circuit for a general-purpose D-RAM and operated while being controlled by a memory control circuit 9 and a digital video signal DV is recorded in the write mode in the unit of fields. A memory space of the FM 8 is used sequentially cyclicly to record intermittently an image formed by video signals to record a newest image for the memory space at the time interval. After the trigger signal is received, when the FM 8 records the video signals by the specified number of frames, the recording of the FM 8 is stopped, then the size of the memory space before and after the timing of the trigger signal and the image depending on the specified number of frames is recorded in a form of a decomposed photograph.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal processing apparatus, and can be applied to a video printer which captures and prints a video signal and captures an image in the form of a separated photograph.

[0002]

2. Description of the Related Art Conventionally, in this type of video printer, by printing an image formed by a video signal, a desired image can be printed more easily than in the case of silver halide photography. There is.

That is, this type of video printer records a video signal output from an image pickup device, a video tape recorder or the like in a frame memory according to an input mode selected by a user. Here, for example, when the user selects the normal mode and presses a predetermined operator, the video printer uses the timing of this pressing operation as a reference,
The video signal for one frame is recorded in the frame memory. Accordingly, when the user subsequently confirms the monitor screen and presses the print operator, the video printer drives the thermal head by the image data recorded in the frame memory and prints the image recorded in the frame memory.

On the other hand, when the user presses a predetermined operator after selecting the strobe mode, the video printer intermittently frames the video signal output from the video tape recorder at a prescribed interval. Record in memory. When recording in this frame memory, the video printer records a plurality of images in the frame memory by thinning out and recording the image data. As a result, the video printer is set to the normal mode 1 when the user subsequently presses the print operator.
Instead of a single image, a plurality of images are printed on a single printing sheet and output.

[0005]

By the way, this kind of strobe mode is convenient for use in, for example, inspecting a golf swing and checking a tennis foam. That is, when checking the golf swing, in the video printer,
Image the golf fur to be inspected with a video camera,
The operator of the recording is pressed and operated in consideration of the timing at which the golf fur swings. Similarly, when confirming the form of tennis, the tennis player images the tennis player with a video camera, and the tennis player presses the operator for recording at the timing of hitting the ball.

As a result, in the video printer, a disassembled photograph of a golf swing like a stroboscopic photograph of a silver salt photograph,
It is possible to print a disassembled photograph of the tennis form.

In this case, however, in the conventional video printer, the operator of the recording is pressed and operated by intuition and experience in consideration of the timing. Eventually, the timing of the pressing is difficult and the desired image is surely captured. There was a difficult problem. That is, when inspecting a golf swing, there are cases where the moment of impact is missing, and the first half and the second half of the swing are missing. Similarly, when checking the form of tennis, the moment when the ball is hit may be missing, or the first and second half of the swing may be missing.

Further, by using this strobe mode, for example, the materials introduced by the telop in a cooking program are recorded,
Printing may be performed, and in this case as well, the first half and the second half of the telop may be missing depending on the timing of pressing the recording operator in advance.

The present invention has been made in consideration of the above points, and it is an object of the present invention to propose a video signal processing apparatus capable of surely capturing a desired image.

[0010]

In order to solve such a problem, in the present invention, the video signal is intermittently recorded at a prescribed time interval by sequentially and cyclically using the memory space, and the video signal is recorded. Storage means for recording the image formed by the signal at the previous time interval, and after the trigger signal is input,
The storage means is provided with a control means for stopping and controlling the recording operation of the storage means when the preceding video signal is recorded by a predetermined number of frames.

Further, the control means changes the previously specified number of frames in response to the operation of the operator.

Further, at this time, the control means displays the previous memory space in the form of a bar graph, and displays a marker on the bar graph or adjacent to the bar graph to respond to the operation of the previous operator. Then, the previous marker is moved on the bar graph or along the bar graph, and the previously specified number of frames is displayed according to the distance from the display position of the marker to the end of the bar graph.

Further, a printing means for printing the image recorded in the storage means is provided.

[0014]

In the storage means, the memory space is sequentially and cyclically used to intermittently record the image formed by the video signal at a predetermined time interval, so that the memory space is divided at this time interval. Only the latest image can be recorded. Therefore, after the trigger signal is input, if the previous storage means records video signals for a specified number of frames, if the recording operation of this storage means is stopped and controlled, the front and rear memory spaces The size of the image and the number of images determined by the specified number of frames can be recorded in the form of a disassembled photograph.

Thus, the prescribed number of frames can be changed in response to the operation of the operator to surely record the desired image.

The memory space is displayed in the form of a bar graph, and a marker that moves on or along the bar graph is displayed on the bar graph or adjacent to the bar graph in response to the operation of an operator. , By the above control means,
If the specified number of frames is displayed according to the distance from the display position of this marker to the end of the bar graph, the user who operates this operator can easily grasp the total number of frames and the timing of the trigger signal. it can.

Further, the decomposed photograph can be output by the printing means for printing the image recorded in the storage means.

[0018]

Embodiments of the present invention will be described in detail below with reference to the drawings.

(1) Overall Structure In FIG. 1, reference numeral 1 denotes a video printer as a whole,
In this embodiment, the golf player 3 picked up by the video camera 2
Print the image. That is, the video printer 1
The video signal SV is formed so that it can be input through the input connector 4, and in this embodiment, the video camera 2 for picking up the image of the golf player 3 is connected to the input connector 4.

The selection circuit 5 outputs the video signal SV input through the input connector 4 to the monitor device 6 connected externally, so that the video printer 1 can directly monitor the input video signal SV. It is done like this. The analog-digital conversion circuit (A / D) 7 is
The video signal SV input from the input connector 4 is converted from analog to digital on the basis of a predetermined sampling pulse, and a digital video signal DV is output.

The frame memory 8 is a general-purpose D-RAM.
It is a large-capacity memory circuit formed of (Dynamic-Random Access Memory), operates under the control of the memory control circuit 9, and records the digital video signal DV in field units in the write mode. This allows the video printer 1 to capture an image in units of fields and effectively avoid so-called double copying of an image, which is caused by an image shift between even and odd fields.

At the time of this recording, the frame memory 8 is shown in FIG.
As shown in, the capacity is selected so that an image of 32 frames in total can be recorded in a field unit, which allows continuous recording for about 0.5 seconds (1/60 [sec] x 32 frames).
The digital video signal DV can be recorded during this period, and the digital video signal DV can be recorded for about 10 seconds (20/60 [seconds] × 32 frames) by intermittently recording every 20 fields. ing.

Further, in the read mode, the frame memory 8 outputs the recorded image data to the digital-analog conversion circuit (D / A) 10 in a predetermined order, and the digital-analog conversion circuit 10 converts the image data into an analog signal. The data is converted and output to the monitor device 6 via the selection circuit 5. Thereby, in the video printer 1, the operations of the selection circuit 5 and the memory control circuit 9 are switched as necessary,
The image recorded in the frame memory 8 can be confirmed.

Further, when the video printer 1 is set to the print mode, the frame memory 8 is controlled by the memory control circuit 9 and outputs the recorded image data to the thermal head control circuit 12. Here, the thermal head control circuit 12 drives the thermal head 13 based on this image data, and print paper 14 made of thermal paper.
Print a black and white image on. As a result, the video printer 1 can switch the operations of the memory control circuit 9 and the thermal head control circuit 12 as necessary to print the recorded image.

The external synchronizing circuit 15 extracts a horizontal synchronizing signal and a vertical synchronizing signal from the video signal SV input through the input connector 4, and then generates a timing signal synchronized with the video signal SV from these signals. . As a result, in the video printer 1, the timing signal is output to the memory control circuit 9 via the selection circuit 16, and the analog-digital conversion circuit 7 is driven by this timing signal to synchronize the video signal with the timing synchronized with the video signal SV. The signal SV is converted into a digital video signal DV, and the converted digital video signal DV is recorded in the frame memory 8 in field units.

On the other hand, the internal synchronization circuit 17 divides a predetermined reference signal to generate an internal synchronization timing signal, and outputs this timing signal to the selection circuit 16. As a result, in the video printer 1, the timing signal of the internal synchronizing circuit 17 is used instead of the timing signal of the external synchronizing circuit 15 as necessary, and the digital-analog conversion circuit 1
0, the memory control circuit 9 is driven so that the memory control circuit 9 can be operated at a timing independent of the video signal SV. In the video printer 1, the operation is switched so as to operate by the internal synchronization except when recording in the frame memory 8, so that the operation can be performed even when the power of the video camera 2 or the like is cut off. There is.

The memory control circuit 9 controls the operation of the frame memory 8, switches the operation mode of the frame memory 8 according to a control command from the system control circuit 18, and switches the address to be issued to the frame memory 8. . As a result, in the video printer 1, the system control circuit 18 switches the addresses issued by the memory control circuit 9 to record, monitor, and print the digital video signal DV in various formats.

The system control circuit 18 is formed of an arithmetic processing circuit and executes a processing procedure recorded in a built-in memory circuit to respond to an operation of an operator arranged on the control panel 19 or the wired remote controller 20. Also, the whole operation is controlled in response to the output signal of the sound sensor 21.

That is, on the control panel 19, as shown in FIG. 3, operators and the like are arranged. Here, on the control panel 19, a pause operator 22, a cut operator 23, a feed operator 24, a standby operator 25, and a print operator 26 are provided next to the outlet for ejecting the print result. Will be placed.

Here, in the video printer 1, in the review mode, images of a plurality of frames captured in the frame memory 8 are sequentially and cyclically displayed at predetermined intervals on the monitor device 6, and at this time, a pause operation is performed. The child 22 is operated to switch between the temporary stop of the circulation operation and the start of the circulation operation. Further, at the time of this temporary stop, the left and right cursor operation elements 28L or 28R housed in the door 27 on the lower side of the control panel 19 are operated so that the frame can be fed forward or backward.

On the other hand, in the video printer 1, when the cutting operator 23 and the feed operator 24 are respectively operated, the print paper 14 is cut and the paper is fed again. Further, the video printer 1 is formed so that two types of images can be selected as an image capture mode: an auto memory mode (corresponding to a conventional strobe mode) and a manual memory mode, and the standby operator 25 is operated in the auto memory mode. Then, the capturing of the image in the frame memory 8 is started.

On the other hand, when the print operator 26 is pressed in this state, an image is captured immediately with reference to this timing or in the same manner as the number of frames set by the user, and then the frame memory is loaded. When the image capturing in 8 is stopped, the mode is switched to the review mode, and when the print operator 26 is subsequently pressed, the content recorded in the frame memory 8 is printed. On the other hand, in the manual memory mode, when the print operator 26 is pressed, after the image is captured in the frame memory 8,
Print the captured content as needed. It should be noted that a light emitting diode indicating that an image is being captured and a light emitting diode indicating that an image is being printed are arranged on the control panel 19 adjacent to the operator 26 for printing.

On the other hand, inside the door 27, an input switching operator 29 and a memory mode switching operator 30 are provided.
In the video printer 1, the input switching operator 29 can be operated to switch the format of the input video signal SV and the number of input channels, and the memory mode switching operator. By operating 30, the image capturing mode can be switched between the auto memory mode and the manual memory mode.

Further, inside the door 27, there are an image quality adjusting operator 31, a format setting operator 32, and a trigger operator 33, cursor operators 28L, 28R, 28U, 2
8D, and a liquid crystal display panel 34 is arranged above the control panel 19. As a result, in the video printer 1, after pressing the image quality adjusting operation element 31, the menu displayed on the liquid crystal display panel 34 is changed to the cursor operation elements 28L, 28R, 2 and 2.
8U, 28D can be selected to select an item for image quality adjustment, and subsequently, the operator 31 and the cursor operators 28L, 28R, 28U, 28D can be operated to set the adjustment amount. . Thus, the image quality of the print result can be finely adjusted as necessary.

On the other hand, in the video printer 1, after operating the format setting operator 32, the menu displayed on the liquid crystal display panel 34 is moved to the cursor operator 28L,
Select with 28R, 28U, 28D to capture images,
The display and print formats can be finely set, and similarly, the operator 33 of the trigger can be operated to finely set the image capture timing.

On the other hand, the wired remote controller 20 is
It is formed as shown in FIG. That is, the wired remote controller 20 is formed so as to be connectable to the video printer 1 via the connector 35, and has a play operator 36,
Temporary stop operator 37, frame advance operator 38L and 3
8R, standby operator 39, memory operator 40,
A print operator 41 is arranged. Here, the play operator 36 and the pause operator 37 correspond to the pause operator 22 on the control panel, and the frame advance operators 38L and 38R are cursor operators located on the control panel 19. Functions are assigned so as to correspond to the frame advance operations of 28L and 28R.

The standby operator 39 corresponds to the standby operator 25 of the control panel 19, and the memory operator 40 and the print operator 41 correspond to the print operator 26 of the control panel. There is. As a result, in the video printer 1, the wired remote controller 20 is connected as necessary, and the basic functions such as printing can be remotely controlled.

On the other hand, the sound sensor 21 collects ambient sound with a built-in microphone, and outputs a trigger when the sound rises above a specified level. As a result, in the video printer 1, the sound sensor 21 is connected to detect the hitting sound generated by the golf swing when, for example, printing the golf swing, and the desired sound is surely set based on the timing of the hitting sound. It is designed so that disassembled photographs can be printed.

The system control circuit 18 controls the entire operation by the inputs from the control panel 19, the wired remote controller 20, and the sound sensor 21, and the image of the video signal SV is displayed according to the operation mode set by the user. The image recorded in the frame memory 8 is printed according to the operation mode set by the user.

(2) System control circuit and memory control circuit When the memory mode switching operator 30 is operated, the system control circuit 18 responds to the pressing operation to sequentially switch between the manual memory mode and the automatic memory mode. The operation mode is switched alternately, and this operation mode is displayed on the liquid crystal display panel 34.

When the user selects the manual memory mode here, the system control circuit 18 sends a control command to the memory control circuit 9 to set the write mode to the frame memory 8 to the manual memory mode. In this state, when the user subsequently presses the print operator 26 or the memory operator 40, a trigger is sent to the memory control circuit 9 at the timing of this press operation, whereby the digital video signal DV for one field is sent. It is recorded in the frame memory 8.

Further, the system control circuit 18 issues a control command to the memory control circuit 9 and the thermal head control circuit 12 according to the print format selected by the user to print the recorded image, or to continue the operator 26. Alternatively, a pressing operation of 41 causes a trigger to be sent to the memory control circuit 9 to load the second image into the frame memory 8 and then print the recorded image.

As a result, in the video printer 1, after the manual memory mode is set, the operator 26 or 40
The video signal SV can be easily printed by simply pressing.

On the other hand, when the user selects the auto memory mode, the system control circuit 18 switches the operation mode to the auto memory mode. In this state, when the user opens the door 27 and operates the input switching operator 29, the number of input channels is displayed on the liquid crystal display panel 34. When the user operates the operation elements 28U and 28D to select one channel, the system control circuit 18
Switches the operation mode to the single-channel auto memory mode, but switches to the multi-channel auto memory mode when the user selects two or more channels.

Here, the single-channel auto memory mode refers to an area for 32 frames of the frame memory 8.
In the operation mode in which images are continuously captured according to the condition set by the user, the system control circuit 18 sets this condition in the memory control circuit 9 in response to the operation of the operator subsequently operated by the user.

On the other hand, in the multi-channel auto memory mode, the area of 32 frames of the frame memory 8 is divided into the number of channels set by the user (here, the maximum is 4 channels), and each of these channels is divided. This is an operation mode that captures images according to the conditions set by the user in the auto memory mode. System control circuit 1
8 sets the condition of this operation mode in the memory control circuit 9 in response to the operation of the operator subsequently operated by the user,
As a result, the video printer 1 can record up to four events separated in time as continuous photographs.

In this single channel auto memory mode, the user operates the standby operators 25, 3
When 9 is pressed, the system control circuit 18 issues a write start command to the memory control circuit 9 and sequentially and cyclically uses the memory area for 32 frames of the frame memory 8 at an interval set by the user. The digital video signal DV is recorded. As a result, the system control circuit 1
The frame memory 8 is adapted to sequentially update the frame memory 8 so that the latest 32 frames of images are always held backwards from the present time.

In this state, when the printing operation elements 26 and 41 are subsequently pressed or when the sound sensor 21 receives a trigger, the system control circuit 18 uses the timing as a reference to set the condition set by the user. Thus, a write stop command is issued to the memory control circuit 9. As a result, the video printer 1 frames the images of 32 frames before and after the timing at which the operating elements 26 and 41 are pressed or the timing at which the trigger is input from the sound sensor 21 is set as a boundary according to the condition set by the user. It is designed to be recorded and held in the memory 8.

At this time, the system control circuit 18 starts the frame memory 8 from the timing of this pressing operation or trigger.
The timing until stop control of the writing operation is changed in response to the operation of the operator, so that the video printer 1 can surely record a series of quick operations.

Note that such switching of the memory space of the frame memory 8 and switching of the interval are performed by the control code of the system control circuit 18 by the memory control circuit 9.
Switch the address issued by the memory control circuit 9
Is executed by switching the timing of the write pulse issued by.

The conditions for this series of image recording are set by the system control circuit 18 by operating the operating elements 32 and the like arranged in advance on the control panel 19 before operating the standby operating elements 25 and 39. .

That is, in this auto memory mode, when the user opens the door 27 and presses the operator 30 of the trigger, the system control circuit 18 displays a menu of interval, review speed, and position on the liquid crystal display panel 34. In this state, the user controls 2
When the 8U or 28D is operated to select the interval menu, the system control circuit 18 causes the liquid crystal display panel 3
When the display of 4 is switched to the display of the interval setting and the operator 28L or 28R is operated in this state, the time display displayed in this menu is sequentially increased or decreased.

In the video printer 1, the interval in the auto memory mode is thus set to 1/60 second to 2
The system control circuit 18 issues a control command to the memory control circuit 9 in response to the time display set in this way. Then, the memory control circuit 9 is controlled so that images are sequentially captured in the frame memory 8 at this interval.

On the other hand, when the user operates the operation element 28U or 28D to select the review speed menu, the system control circuit 18 switches the display of the liquid crystal display panel 34 to the review speed setting display, and in this state. When the operator 28L or 28R is operated, the display of the numbers displayed in this menu is sequentially increased or decreased.

In the video printer 1, the reproduction speed at the time of review is set by this, and the system control circuit 18 switches the entire operation mode to the review mode when the capture of the image in the frame memory 8 is completed. A control command is issued to the memory control circuit 9 in response to the display of the number set in this way. As a result, the system control circuit 18 reads the image recorded in the frame memory 8 at the speed selected by the user, and outputs the read image to the monitor device 6.

On the other hand, when the user operates the operation element 28U or 28D to select the menu of the trigger position, the system control circuit 18 switches the display of the liquid crystal display panel 34 to the display of the trigger position setting shown in FIG. . Here, the display of the trigger position setting shown in FIG. 5 is "POSITION:" indicating that it is a menu of the trigger position setting, and the frame memory 8
And a symbol string of arrow symbols representing the time-lapse direction. Further, in this display, as indicated by the symbol A, one of the displays of this arrow is displayed in reverse video, and the number of frames of a series of images recorded in the frame memory 8 from the timing of the trigger is displayed depending on the position of this reverse display. Has been done.

As shown in FIG. 6, the system control circuit 18
When the user presses the manipulator 28L or 28R in the state where the display of the trigger position setting is displayed, the position of the reverse display corresponds to this operation and the right position is moved from the central position (FIG. 6 (B1)) respectively. (FIG. 6 (C1)) or leftward (FIG. 6 (D1)). Further, when the user sets the reverse display position in this way, the system control circuit 18 sets the timing for issuing the write stop command to the memory control circuit 9 in correspondence with the reverse display position.

That is, in this embodiment, the memory space for 32 frames is sequentially and cyclically used to record the digital video signal DV, so that from the present time, 32
Images past frames or older will be updated with new images. As a result, the system control circuit 18
The arrow mark in the form of a bar graph is regarded as the memory space of 32 frames, and from the timing when the operating elements 26 and 41 are pressed, or the timing when the trigger is input from the sound sensor 21, the arrow symbol is displayed from the reverse display position. The digital video signal DV is fetched into the frame memory 8 by the distance B up to the right end of, and the fetching control of the image is stopped.

As a result, in the frame memory 8,
An image of the number of frames set by the user after the trigger is input, and an image of the number of frames obtained by subtracting the number of this frame from the 32 frames immediately before the trigger is input are held in the frame memory 8 for 32 frames. . Therefore, in the video printer 1,
When shooting the swing of the golfer 3 (FIG. 6 (A)) using the hitting sound detected by the sound sensor 21 as a trigger, if the trigger position is set to the substantially central position, the follow-up from the address centering on the moment of impact is performed. It is possible to obtain a disassembled photograph through the through (Fig. 6
(B)).

On the other hand, when the reverse display position is set to the right side and the trigger position is set to the right side, a large number of frames can be assigned to the address portion at the moment of impact to obtain a disassembled photograph. It is possible (FIG. 6 (C)).
On the contrary, if the reverse display position is set to the left and the trigger position is set to the left, a large number of frames are assigned to the follow-through part at the moment of impact to obtain a disassembled photo. (Fig. 6 (D)).

If it is used to confirm the form of tennis,
It is possible to reliably record the required number of frames before and after the moment when the ball is hit. Further, in the case of recording a telop, it is possible to record the required number of frames for the image immediately before the press operation of the print operators 26 and 41.

To do this, the video printer 1
In the standby state after the operators 25 and 39 are operated, the images are cyclically taken into the frame memory 8 at regular intervals, and when the trigger is input, the contents of the frame memory 8 are set by the number of frames set by the user. By updating, the desired image can be reliably captured by going up to the past image based on the trigger timing. Therefore, the usability can be improved as compared with the conventional one.

At this time, as described above with reference to FIG. 5, the arrow is arranged in a bar shape to represent the memory space, and the arrow is highlighted on this arrangement to display the trigger timing. The user who operates 1 can grasp the reference timing of the disassembled photograph from this display, and thus the usability can be improved.

Thus, when 32 frames of images are recorded in this way, the system control circuit 18 issues a read command to the memory control circuit 9 and switches the contact of the selection circuit 5 to the digital-analog conversion circuit 10 side. Then, the mode is switched to the review mode, and the contents of the frame memory 8 are displayed at the reproduction speed set by the user.

(2-2) Multi-Channel Auto Memory Mode On the other hand, when the multi-channel auto memory mode is set, the system control circuit 18 causes the frame memory 8 to store only the number of channels selected by the user. The memory space is divided, and the processing of the single channel auto memory mode described above is executed for each of the divided memory spaces. At this time, images are cyclically recorded in each of the divided areas, and when the trigger is input in this state, the specified number of frames are recorded and the recording operation is stopped, so that the coach form and the student form are formed. Can be recorded so as to correspond to the moment of impact, for example. That is, events that differ in time can be recorded in the frame memory 8 so that they have the same timing with respect to this trigger with reference to the trigger.

As a result, the user can compare and examine the recorded contents in detail. Further, for example, it is possible to record only the form of the student while recording the form of the coach in this state and judge whether or not the defect has been corrected. It is also possible to sequentially re-record the forms of a plurality of students with respect to the form of one coach for comparison. Furthermore, in the review mode, by operating the pause operator 22 to pause,
It is also possible to examine the image of the frame in detail.

Further, the contents of the frame memory 8 can be printed and examined in detail so as to compare the disassembled photographs of two channels. Alternatively, two frames of the corresponding coach and student may be printed on one sheet for detailed examination. Thus, for example, the degree of improvement can be recorded in contrast with the coach's form, and the usability of this type of video printer 1 can be improved.

(3) Operation of the Embodiment With the above configuration, the video signal SV output from the video camera 2 is converted into the digital video signal DV in the analog-digital conversion circuit 7 and stored in the frame memory 8 at a predetermined timing. Will be recorded. At this time, when the standby operators 25 and 39 are pressed after the video printer 1 is set to the auto memory mode, the digital video signal DV is sequentially circulated in the frame memory 8 at intervals set by the user. And the latest 32 frames of images are held in the frame memory 8.

The recording operation for the frame memory 8 is performed by a trigger output from the system control circuit 18 or a trigger output from the sound sensor 21 when the user presses the print operation element 26 or 41. When this trigger is output, the number of frames set by the user is fetched and stop control is performed. Therefore, by operating the manipulator 28L or 28R and setting the number of frames from this trigger to the stop control,
The desired image can be surely captured in the frame memory 8.

The number of frames is set on the liquid crystal display panel 34 by moving the position of reverse display in the row of arrows corresponding to the memory space. The trigger timing can be set to the timing, and the usability can be improved.

In the multi-channel auto memory mode, the memory space is divided into the number of channels set by the user, and an image is captured in each of the divided areas in the same manner with the trigger as a reference. Can be recorded easily and surely with reference to the trigger so as to further respond.

(4) Effects of the Embodiments According to the above configuration, images are sequentially and cyclically recorded in the frame memory 8, and when a trigger is input, the images are fetched from the trigger by the required number of frames and stopped. By controlling, the timing of this trigger can be set and the desired image can be surely taken into the frame memory 8.
This memory space is displayed in the form of a bar graph, the position of reverse video is changed on this display, and the number of frames from this trigger to stop control is set, so that the trigger timing can be set easily and reliably. can do. Further, even in the multi-channel auto memory mode, by capturing images in the same manner, it is possible to easily and surely record a plurality of events with the trigger as a reference, and further record and compare them so as to correspond to each other.

(5) Other Embodiments In the above embodiment, the case where the memory space for 32 frames is prepared has been described, but the present invention is not limited to this, and the memory space can be freely set as needed. Can be set.

Further, in the above-mentioned embodiment, the case where the memory space of the frame memory 8 is displayed by the symbol string of the arrow symbol representing the series of images recorded in the frame memory 8 together with the passage of time has been described. However, the present invention is not limited to this, by simply displaying the marker on the bar-shaped display, when representing the timing of the trigger, by further forming a bar graph in different colors with the timing of the trigger as a boundary, Various display methods can be widely applied, for example, when the trigger timing is represented by using the color boundary as a marker.

Further, in the above-mentioned embodiment, the case where the hitting sound is detected by the sound sensor or the trigger is generated by the pressing operation of the operator for printing is described, but the present invention is not limited to this, and for example, Various trigger generation methods can be widely applied, such as when using a photoelectric switch for a physical experiment and when using an output from various alarm devices as a trigger.

Further, in the above-mentioned embodiment, the case where different subjects are imaged on the basis of the corresponding trigger has been described, but the present invention is not limited to this, and for example, a standby is set by a timer or the like. Alternatively, the two events separated in time may be captured based on some trigger.

Further, in the above-mentioned embodiment, the case where the video signal is input to print the black and white image has been described, but the present invention is not limited to this, and when the component video signal is input and printed, further. Red, blue,
The present invention can be widely applied to inputting a video signal in various formats, such as inputting a green color signal for printing. Further, the printing is not limited to the black and white image, but can be widely applied to the case of printing a color image, a black and white inverted image, and the like.

Further, in the above-mentioned embodiment, the case where the image is applied to the video printer and finally the image captured in the frame memory is printed is described, but the present invention is not limited to this, and may be, for example, a television receiver or a video receiver. It can be widely applied when it is incorporated in a tape recorder or the like and used for various lessons and the like.

[0079]

As described above, according to the present invention, after a trigger is input to the storage means for sequentially cyclically capturing images at a prescribed time interval, a prescribed number of frames are captured and then stopped. By controlling the number of frames, the desired image can be surely captured.

[Brief description of drawings]

FIG. 1 is a block diagram showing a video printer according to an embodiment of the present invention.

2 is a schematic diagram showing a memory space of the frame memory of FIG. 1. FIG.

FIG. 3 is a front view showing a control panel of the video printer of FIG.

FIG. 4 is a plan view showing a wired remote controller of the video printer of FIG.

5 is a plan view showing a display of the liquid crystal display panel of FIG. 1 when a trigger position is set.

FIG. 6 is a schematic diagram showing a relationship between a trigger timing setting and an image to be recorded.

[Explanation of symbols]

 1 video printer 2 video camera 7 analog-digital conversion circuit 8 frame memory 9 memory control circuit 10 digital-analog conversion circuit 18 system control circuit 20 wired remote control 21 sound sensor

Claims (4)

[Claims] 1. A storage means for recording an image formed by the video signal at the time interval by intermittently recording the video signal at a prescribed time interval by sequentially and cyclically using a memory space. And a video signal processing means for controlling the recording operation of the storage means to stop when the storage means records the video signal for a predetermined number of frames after a trigger signal is input. apparatus. 2. The video signal processing apparatus according to claim 1, wherein the control means changes the specified number of frames in response to an operation of an operator. 3. The control means displays the memory space in the form of a bar graph, displays a marker on the bar graph or adjacent to the bar graph, and in response to an operation of the operator, the bar graph. 3. The specified number of frames is displayed according to the distance from the display position of the marker to the end of the bar graph by moving the marker on the top or along the bar graph. Video signal processing device. 4. The printing apparatus according to claim 1, further comprising a printing unit for printing the image recorded in the storage unit.
Alternatively, the video signal processing device according to claim 3.