JPS63314981A - Still picture reproduction device - Google Patents

Abstract

PURPOSE:To automatically and consecutively reproduce many still pictures by storing data showing the number of recording frames of the still picture on a magnetic recording medium loaded to each video signal reproduction means, referring this memory content, executing access to the plural video signal reproduction means in order and reproducing the picture when the picture is reproduced. CONSTITUTION:Before reproducing the picture, a recording tracks on the magnetic recording medium loaded to the plural video signal reproduction means 10, 12, 14, 16 and 18 are searched by a control means 20 and the data showing the number of the recording frames of the still picture recorded on the magnetic recording medium of each video signal reproduction means is stored in the prescribed memory area of a recording frame number memory means 212. On the other hand, when the picture is reproduced, the control means 20 reproduces the picture of the recording frame number on the magnetic recording medium loaded to each video signal reproduction means in a prescribed cycle by referring the memory content of the means 212 and successively executing the access to the plural video signal reproduction means. Them it shifts the operation to the reproduction of the next video signal reproduction means when the reproduction of the picture of the recording frame number in one video signal reproduction means is finished. Simultaneously to that, it controlls the plural video signal reproduction means to return one video signal reproduction means to an initial state.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention: A video signal is reproduced from a magnetic recording medium such as a magnetic disk on which a video image representing a still image is recorded, and a video signal representing a still image is displayed on the screen of a monitor device. The present invention relates to a still image playback device that displays images.

=Prior Art] Recently, still image reproducing devices such as electronic still camera systems using magnetic disks and magnetic recording and reproducing systems that record and reproduce photographic images on magnetic disks have been developed and put into practical use.

As a result of standardization of the magnetic disks used in these systems, each magnetic disk records, for example, a field image (an image recorded in units of field signals).
It is possible to record 50 still images and 25 frame images (images recorded in units of frame signals).

Therefore, due to the system configuration of one video signal reproducing device,
Since only one magnetic disk can be reproduced, the number of still images (number of frames) that can be recorded and reproduced is limited.

For normal use, the above number of frames is sufficient, but depending on the use, the number of frames may be insufficient.In other words, for in-store displays and various demonstrations, images with more than the above number of frames will be continuously played. There are many requests for this.

[Problem that the invention seeks to solve]

The following proposals are made in response to the above requirements. In other words, the system is configured such that a plurality of video signal playback devices can be switched and connected to a monitor device, and all tracks of a magnetic disk loaded in one video signal playback device are sequentially played back, and then connected to the monitor device and the video signal playback device. Switch the connection between the monitor device and another video signal reproducing device so that all tracks of the magnetic disk loaded in the video signal reproducing device are sequentially reproduced. This is an attempt to play back a still image.

However, due to the recorded content of the magnetic disk, it is rare for the magnetic disk used in this heel image recording and reproducing system to have a video signal representing a still image recorded over all tracks. , the number of recorded frames is
It is difficult to continuously reproduce a large number of still images using a plurality of video signal reproducing devices each loaded with a variable number of magnetic disks.

The present invention was made in view of these circumstances, and
It is an object of the present invention to provide a still image reproducing device that can automatically and continuously reproduce a large number of still images.

Means for Solving Two Problems] In order to achieve the above object, the present invention reproduces a video signal from a magnetic recording medium on which a video signal indicating a still image is recorded, and displays the still image on the screen of a monitor device. a still image display device for displaying still images), a plurality of video signal reproducing means for reproducing video signals from a magnetic recording medium on which video signals representing still images are recorded; an input signal switching means for selectively switching the video signals to be played; and a storage area provided corresponding to each of the plurality of video signal reproducing means. Recording frame number storage means for storing the number of recording frames of still images recorded on the medium, and output signal switching for selectively outputting control signals for controlling the operations of the plurality of video signal reproduction means. and a means for accessing the plurality of video signal reproducing means by switching and controlling the input signal switching means and the output signal switching means prior to image reproduction, and controlling the magnetic recording medium loaded in each of the video signal reproducing means. Searching a recording track, storing data indicating the number of recorded frames of a still image on the magnetic recording medium in a predetermined storage area of the recording frame number storage means, and referring to the storage contents of the recording frame number storage means during image reproduction. accessing the plurality of video signal reproducing means in sequence, and reproducing the number of recording frames of the loaded magnetic recording medium for each video signal reproducing means at a predetermined cycle;
When the reproduction of the number of recorded frames in the video signal reproduction means is completed, the reproduction operation of the next video signal reproduction means is started, and the video signal reproduction means after the reproduction operation of the number of recorded frames is initialized. and control B means for controlling the plurality of video signal reproduction means so as to return to the original state.

[1] In the still image reproduction device according to the present invention: Prior to image reproduction,
The control means searches the recording tracks of the magnetic recording media loaded in the plurality of video signal reproducing means, and the data indicating the number of recording frames of still images recorded on the magnetic recording medium of each video signal reproducing means is determined as the number of recorded frames. The information is stored in a predetermined storage area of the storage means.

On the other hand, during image reproduction, the control means refers to the storage contents of the recording frame number storage means and sequentially accesses a plurality of video signal reproduction means, and for each video signal reproduction means, the number of recording frames of the magnetic recording medium loaded is When the reproduction of the number of recorded frames in the - video signal reproducing means is completed, the reproduction operation of the next video signal reproducing hand is started, and the video signal reproduction of the - is performed at a predetermined period. The plurality of video signal reproducing means are controlled so as to return the means to an initial state.

〔Example〕

The following is a still image recycling bag according to the present invention based on the attached drawings.
A preferred embodiment will be described in detail. FIG. 1 shows the configuration of an embodiment of a still image reproducing device according to the present invention. These five video signal reproducing devices are loaded with magnetic disks capable of recording 50 frames of field images, making it possible to reproduce a total of 250 frames of images.

The plurality of video signal reproducing means 10 to 18 are sequentially accessed by the control device 20, and when the reproduction operation for the number of recording frames of the magnetic disk loaded in one video signal reproducing device is completed, the next one is accessed. The video signal reproducing device is controlled so that the reproducing operation is shifted to the video signal reproducing device. Input terminal 1 of control device 20. In ~■, the video signals VD1 to VD5 are manually input from the video signal reproducing devices 10 to 18, and are sent from the output terminals O1 to 05 to the plurality of video signal reproducing devices 10 to 18 in order to control the reproduction operation of each video signal reproducing device. control signals C51 to C3
5 is output. Control signal C3I~C
35, for example, the magnetic head can be rotated 1 in the forward direction or in the reverse direction.
There are a forward (FWD) signal or a reverse (REV) signal that causes the magnetic head to move by one track, or a reset signal (initialization) that forces the magnetic head to return to the first track.

The playback time per frame of a still image is determined by setting the timer 214 in the control device 20 or by using the audio synchronization signal generation circuit 2.
It is controlled by the control device 20 based on the audio synchronization signal 222 output from 4.

The audio synchronization signal generation circuit 24 reproduces a cue signal recorded on a specific track formed on an audio magnetic tape.
Based on the cue signal, the audio synchronization signal 222 is output to the terminal SYC of the control circuit 206. The cue signal has a frequency of 1 KHz and lasts for 0.3 seconds, and this signal instructs to move the magnetic head in the video signal reproducing device (10 to 18) by one track in the forward direction. The cue signal generated within the audio synchronization signal generation circuit 24 is outputted to the terminal SYC of the control device 20 as an audio synchronization signal 222 in a detected state.

Further, when the playback time is set by the timer 214, a forward (FWD) signal is outputted at the set constant time interval.

On the other hand, the plurality of video signal reproducing devices 10 to 18 continuously perform two tracks when the magnetic head is transferred, and if there is no recording yet, when a forward signal is further input manually, the first track is automatically returned to the first track. It has a function to return to.

Next, FIG. 2 shows a specific configuration of the control device 20.

In the figure, the control device 20 includes an input signal switching circuit 202
, an output signal switching circuit 204, a control circuit 206, an image signal processing circuit 208, a memory circuit 212, and a timer 21.
It consists of 4th grade.

The input signal switching circuit 202 converts any one of the video signals VDI to VD5 from the plurality of video signal reproduction devices 10 to 18 inputted to the input terminals 11 to I5 into a control signal 100 outputted from the control circuit 206. This is a circuit that outputs an output to an output terminal P based on.

In addition, the output signal switching circuit 204 receives the control signal 102 output from the control circuit 206 and selects the control signal C3 (C5I to C35) inputted to the input terminal Q by the control circuit 206 to one of the output terminals 01 to 05. This is a circuit that outputs a

The video signal processing circuit 208 outputs video signals D1 to D1 through the input signal switching circuit 202 and the switching switch 210.
After FM demodulation of any one of VD5, the predetermined former 7
) video signal, for example, the NT SCfg code.

The changeover switch 210 is operated by a control signal 216 to switch the contact a side during image reproduction, and to store the number of recording frames of still images recorded on the magnetic disk loaded in each of the video signal reproduction exercises 10 to 13 in the storage circuit 212. If you want to use it, you can switch it to the contact side.

The storage circuit 212 stores the plurality of video signals (image signal reproducing devices 10 to 10).
18, it has a storage area for storing the number of still images recorded on the magnetic disk loaded in these image signal reproducing devices, and as described later, each Prior to the reproduction operation of the video signal reproduction device, data indicating the number of recorded frames is stored.

The control circuit 206 is composed of a microcomputer, etc.
Input signal switching circuit 202, output signal switching circuit 204, and changeover switch 21 based on manual control instructions for various switches
0 switching control, storage of data indicating the number of recorded frames in the storage circuit 212, and control of the playback operations of the video signal playback devices 10 to 18. The control circuit 206 performs the operation of storing data indicating the number of recorded frames on the magnetic disks loaded in each of the video signal reproduction attachments 10 to 18 in the storage circuit 212 (recorded frame number search) or the operation of image reproduction. The selection switch 218 instructs the operation mode, the playback mode switch 220 instructs the operation mode of either audio synchronization playback or timer playback, and the state signals of each switch and the audio synchronization signal (the audio synchronization signal output from the speech generation main circuit 24). 222 will be manually operated.

The timer 214 is configured such that the playback time can be set within the range of 1 to 9 seconds per frame by an external setting input 224.

Here, audio synchronized playback refers to the case where the playback operations of the video signal playback devices 10 to 18 are controlled based on the audio synchronization signal 222, and timer playback refers to the case where the playback operation of the video signal playback devices 10 to 18 is controlled based on the audio synchronization signal 222. Video signal reproducing devices 10 to 18
7) The case where the playback operation of is controlled.

Next, the operation of the control circuit 206 will be explained with reference to FIGS. 3 to 6. FIG. 3 shows the contents of the main routine executed by the control circuit 206. In the figure, when the program is started, step 300 is executed based on whether the switch 218 is turned on or off. It is determined whether or not to search for the number of recorded frames, and if the search for recorded frames is to be performed, step 301! : Transition, and if not, repeat the same judgment. In step 301, it is determined whether or not the scooter switch is in the on-position chin. If it is in the off-position, the process returns to step 300, and if it is in the on-position chin, the process proceeds to step 302, where the video signal reproducing apparatus is completed. A reset signal is outputted by the control circuit 206 to the video signal reproducing device 18 via the output signal switching circuit 204, and the magnetic heads of these video signal reproducing devices 10 to 18 are moved in a strong 11j manner to the first track of the magnetic disk. Next '7), in steps 303 to 307: Count and store the number of frames in each video signal reproducing device (1,000, 1,000) of the loaded video signal playback device. ) is carried out.

The details of the subroutines executed in each step will be explained with reference to FIG. 216 is output, and the selector switch 210 is switched to B and 11. In step 400, it is determined whether the image signal remaster device 10 is connected to the control circuit 206 and a magnetic disk is loaded.

Here, if the video signal reproducing device 10 has a magnetic disk loaded (5) or no video signal is recorded on each track of the magnetic disk (7), the same status signal, for example, an unrecorded state, is sent. The signal shown is input signal switching circuit 2
02, is output to the control circuit 206 via the changeover switch 210.

Now, if the determination in step 400 is "No", the execution of this subroutine is ended, and the process moves to step 304 (FIG. 3), where the next video signal reproducing device 12 is transferred as shown in FIG. The subroutine will be executed.

On the other hand, if the determination in step 400 is "Yes", in the next step 401, the control circuit 206 sends a control signal C3l (in this case forward i
A word) is output, and the magnetic head is moved over the magnetic disk by one track (one frame). In step 402, the number of recorded frames is counted by a frame number counter provided in the control circuit 206. Furthermore, in step 403, it is determined whether or not the last frame (track) of the recording frames has been detected. In this determination, if there are two consecutive unrecorded tracks when moving the magnetic head, it is determined that The last self-recorded track is set as the final track, ie, the final frame.If the determination in step 403 is "No", the process returns to step 401 and the same process is repeated.

If the final frame is detected in step 403, data indicating the number of frames recorded so far is stored in a storage area provided corresponding to the video signal reproducing device 10 of the storage circuit 212 (step 404). Next, the frame number counter is reset, the magnetic head of the video signal reproducing device 10 is returned to the first track (steps 405 and 406), and the execution of this subroutine is ended.

Similarly, the above-mentioned subroutine is executed for the video signal reproducing devices 12 to 18, and eventually these video signal reproducing devices are stored in the storage area provided corresponding to each of the video signal reproducing devices 10 to 18 in the storage circuit 212. Data indicating the number of recording frames of each still image recorded on the magnetic disks loaded in the magnetic disks 10 to 18 is stored (steps 303 to 307).
).

Next, in step 308, it is determined whether audio synchronized playback is to be performed (5) based on the on/off state of the playback mode switch 220. If it is determined that the mode is not the audio synchronized playback mode, that is, the timer playback mode, it is determined in step 309 whether or not to perform image playback. If the image is being reproduced (switch 218 is on), it is determined in the next step 310 whether or not the start switch 230 is in the off state, and if the start switch 230 is in the off state, steps 311 to 315 are performed. -1 to 8 center (After the image signal reproducing devices 10 to 18 sequentially perform image reproduction in the timer reproduction mode, the process returns to step 311.

Note that if the determination in steps 309 and 310 is "No", the process returns to step 308. Also, in step 308 “Y”
es", that is, when it is determined that the audio synchronized playback is performed, steps 316 to 320 proceed to steps 316 to 320.
8, image reproduction is performed in the audio synchronized reproduction mode in sequence, and the process proceeds to step 308.

Next, the contents of the subroutine executed in steps 311 to 315 are shown in FIG. In the figure, first in step 500, the video signal reproducing device 10 controls the control device 20.
It is determined whether or not the magnetic disk is connected to and loaded with a magnetic disk. If the determination is "No" in step 500, the execution of this subroutine is terminated.

On the other hand, if it is determined as "Yes" in step 500, in step 501, the changeover switch 210: contact a stop 1: switch 2, the video signal VDI output from the video signal reproducing device 10 is transferred to the video signal processing circuit. It becomes possible to output to the monitor device 22 via 208. At this time, the magnetic head is positioned on the first track of the magnetic disk.

In the next step 502, the magnetic I card is returned to the first track of the previous video signal reproducing device (the video signal reproducing device 18 on the large side) which has already been reproduced until the final frame, and the process goes to step 503. In Step 503, the timer 214 reads the set playback time data, and data indicating the number of recording frames on the magnetic disk loaded in the video signal playback device 10 is read from a predetermined storage area of the storage circuit 212. and set in a register provided in the control circuit 206.

In step 505, it is determined whether the number of recorded frames has reached zero, and if the determination in step 505 is "No", the time set by the timer 216 is reached in step 506 (on the screen of the monitor In step 508, the still image recorded on the first track of the magnetic disk is displayed. After the number of 82 recording frames set in the register is decremented by 1, the process returns to step 505 and the same processing is performed.

On the other hand, the data indicating the number of recording frames set in the register in step 505 is updated every time the image is played for a certain period of time (for each frame), and if it reaches zero, execution of this subroutine ends. Then, the process moves to step 312 of the main routine (FIG. 3), and the image signal reproducing device 12 is turned on.
The timer regeneration subroutine described above is executed.

In this way, the subroutines of steps 311 to 315 are repeatedly executed, and the image signal reproducing device is completed! 10 to 18, the still images are continuously reproduced at the reproduction time interval set in the timer 214.

Next, the contents of the subroutine executed in steps 316-320 are shown in FIG. In the same figure, Ste-l Pro 00
At step 600, it is determined whether the image signal re-master device 10 is connected to the control device 20 and a magnetic head is loaded.If the determination is "NO" at step 600, this subroutine is executed completely. Hiiragi completes.

On the other hand, if the determination in step 600 is "Yes", the selector switch 210 is switched to the contact a side in step 601, and the video signal VDI output from the video signal reproducing device 10 is transferred to the input signal switching circuit 202, The signal is now ready to be output to the monitor device 22 via the signal processing circuit 208. At two times, the magnetic head is located on the first track of the magnetic disk. In the next step 602, the magnetic head of the previous video signal reproducing device (video signal reproducing device 18 in this example), which has already completed image reproduction up to the final frame, is returned to the first track, and the process moves to step 603. In step 603, data indicating the number of recorded frames on the magnetic disk loaded in the video signal reproducing device 10 is read from a predetermined storage area of the storage circuit 212, and the control (summation circuit 206)
It is set in a register provided inside. Step 604
Then, it is determined whether the number of recorded frames has reached zero. If it is determined as “\○” in step 604, step 6
05, it is determined whether or not the audio synchronizing signal 222 for one frame forwarding outputted from the audio direct synchronizing signal generating circuit 24 is detected. If the determination in step 605 is NO, the recorded R'?still image 1' remains displayed on the monitor device 22 until the audio synchronization signal 222 is detected. When audio synchronized playback for one frame advance is detected in step 605, the magnetic head is transferred by one frame, that is, transferred to the second track (step 606), and then transferred to the register in step 607. The set number of recording frames is decremented by 1, and then the process returns to step 604 and the same process is performed.

Furthermore, the data indicating the number of recording frames set in the register in step 604 is sent to each frame by one audio synchronization signal 222.
is detected and the image is updated every time the image is played for a certain period of time until the next audio synchronization signal is detected. If the result reaches zero, execution of the second subroutine is terminated and the main The routine moves to step 317 (FIG. 3), and the audio synchronized reproduction subroutine described above for the video signal reproduction device 12 is executed.

In this way, the subroutines of steps 316 to 320 are repeatedly executed, and the video signal reproduction equipment 1
Still images are continuously reproduced through steps o to 18.

In this embodiment, the case where field images are recorded on the magnetic disk has been described, but it goes without saying that the present invention can also be applied to the case where frame images are recorded. In this case, the magnetic head is moved in units of two tracks when moving frames.

〔Effect of the invention〕

As described above, the present invention has the following configuration, and therefore, according to the present invention, a large number of still images can be automatically and continuously reproduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a practical example of the still image reproducing device according to the present invention, FIG. 2 is a block diagram showing the specific configuration of the control device in FIG. 1, and FIGS. The figure shows the contents of the program executed by the control circuit shown in Fig. 2, Fig. 3 is a flowchart showing the contents of its main routine, and Fig. 4 shows the subroutine for counting the number of pieces in Fig. 3. 5 is a flowchart showing the contents of the subroutine for timer playback in FIG. 3, and FIG. 6 is a flowchart showing the contents of the subroutine for audio synchronized playback in FIG. 3. 10-18... Video signal reproducing device, 20... Control device, 22... Monitor device, 24... Audio synchronization signal generation circuit, 202... Input signal switching circuit,
204... Output signal switching circuit, 206... Control circuit, 208... Video signal processing circuit, 212...
Memory circuit, 214... timer.

Claims (1)

[Scope of Claims] A still image display device that reproduces a video signal from a magnetic recording medium on which a video signal representing a still image is recorded and displays the still image on the screen of a monitor device, wherein the video signal representing the still image is a plurality of video signal reproducing means for reproducing video signals from recorded magnetic recording media; an input signal switching means for selectively switching video signals output from the plurality of video signal reproducing means; and a plurality of video signal reproducing means. recording frame number storage means for storing the number of recorded frames of still images recorded on the magnetic recording medium loaded in each of the video signal reproduction means in a storage area provided corresponding to each of the video signal reproduction means; output signal switching means for selectively outputting control signals for controlling these operations to the video signal reproduction means; and prior to image reproduction, the input signal switching means and the output signal switching means are switched and controlled to accesses the video signal reproducing means, searches the recording tracks of the magnetic recording medium loaded in each of these video signal reproducing means, and stores data indicating the number of recorded frames of still images on the magnetic recording medium in the recorded frame number memory. A magnetic recording medium is stored in a predetermined storage area of the means, and at the time of image reproduction, sequentially accesses a plurality of video signal reproduction means by referring to the storage contents of the recording frame number storage means, and is loaded for each video signal reproduction means. The number of recorded frames is reproduced at a predetermined period, and when the reproduction of the number of recorded frames in one video signal reproduction means is completed, the reproduction operation of the next video signal reproduction means is started, and the reproduction operation is performed for the number of recorded frames. 1. A still image reproducing device comprising: a control means for controlling a plurality of video signal reproducing means so as to return the video signal reproducing means to an initial state after the reproduction operation of the still image reproducing means has been completed.