JP2515779B2 - Still image playback device with audio - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a recorded information reproducing apparatus capable of reproducing a still image with sound.

BACKGROUND ART Having a video memory capable of accumulating at least one field of video information obtained from a recording medium, for example, a video disc, audio information read from the video disc is sequentially output as reproduced audio information, and a predetermined image is displayed. A method of reproducing a still image with sound by writing corresponding video information in a video memory and repeatedly reading the written video information to output as reproduced video information is filed by the applicant of the present application.
Proposed in 197619.

FIG. 3 shows a schematic configuration of a recording information reproducing apparatus to which such a reproducing method is applied. In the figure, a video disk 1 is driven to rotate by a spindle motor 2, and its recorded information is read by an optical pickup 3. The read output of the pickup 3 is amplified by a preamplifier 4, an audio component of the amplified output is demodulated by an audio demodulation circuit 5 and supplied to an audio output terminal 6, and a video component is demodulated by a video demodulation circuit 7 to obtain a video signal. It is supplied to a video output terminal 9 via a memory (field memory or frame memory) 8. The write clock generation circuit generates a lock that is locked to, for example, a horizontal synchronizing signal or a color burst signal in the video signal which is the demodulation output of the video demodulation circuit 7, and writes the lock to control the timing of writing the video information to the video memory 8. Use as a clock. on the other hand,
To read the video information written in the video memory 8,
In the read clock generation circuit 11, the reference signal generation circuit 12
Is performed based on a read clock generated in synchronization with the reference signal from the. Note that writing of video information to the video memory 8 is performed only during a period in which a write command signal is supplied from a control circuit (not shown) via the input terminal A.

In such a configuration, video information is written into the video memory 8 by a write clock synchronized with the video signal while the write command signal is being supplied, and when the supply of the write command signal is stopped, the writing of the video information is stopped. On the other hand, the reading of the video information written in the video memory 8 is always performed by the fixed frequency read clock regardless of the supply / stop of the write command signal. As a result, the video information read from the video memory 8 is continuously output to the monitor 13 via the video output terminal 9 as reproduced video information, and an image is displayed on the monitor 13.

The recorded information is read from the video disc 1 by a normal reproducing operation. If the viewer stops the write command at the desired image while looking at the screen of the monitor 13, the video memory 8 stores the subsequent video information. No writing is done,
Since the video information corresponding to the desired image finally written in the video memory 8 is repeatedly read, it is displayed on the monitor 13 as a still image. on the other hand,
Regarding audio information, since the reproduction operation of the video disc 1 is still normal reproduction, the read audio information is demodulated as it is and supplied to the speaker 14 via the audio output terminal 6 as normal reproduction audio information. Played on the street. If the write command is given again, a moving image by normal reproduction from that time is obtained after the still image.

That is, by the above-described operation, a special reproduction effect of inserting a still image in the middle of a moving image by normal reproduction can be obtained without interrupting the reproduction of sound.

In the still image playback device with audio configured as described above, still image playback is performed when the write command is stopped. However, since playback of the disc is continued during the still image playback period,
You cannot see the still image you want to obtain on the monitor. To get the next still image, give a write command once to play the video normally and stop the write command while watching it. As a result, the operation of transitioning to still image reproduction must be repeated. Therefore, only the repetitive reproduction effect of still image / moving image / still image / moving image... Can be obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide an audio-equipped still image reproducing apparatus capable of reproducing a desired image as an arbitrary number of still images with audio.

In the still image reproducing apparatus with audio according to the present invention, the image signal corresponding to the desired image among the reproduced images on the recording medium is stored in the storage means for each program to which the image belongs, and when the desired program is designated. Playback video information corresponding to an image number belonging to a designated program stored in the storage means is written in a video memory, and then playback is started at a predetermined position, preferably the beginning of the program, and the written video information is sequentially repeated. The read audio information is read and the read audio information is directly used as the reproduced audio information.

Example Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention, in which parts equivalent to those in FIG. 3 are indicated by the same reference numerals. The video signal read from the video disc 1 includes an image number such as a frame number assigned to each playback screen, and this image number is an address for searching and playing back an arbitrary screen. Becomes A data memory 15 capable of storing an arbitrary number of this image number is provided, and in this data memory 15, for example, a series of images attached to a disc to be reproduced in the input unit 16 including a ten-key pad. The image number corresponding to the desired image based on the number is input as the target image number. The data memory 15 stores the input image number in a memory location assigned to each program to which the image belongs. Here, the program corresponds to a chapter in a book or a song in music.

At the time of reproducing a still image, a program number such as a chapter number desired to be reproduced is input from the input unit 16 and this program number is supplied to the system control circuit 17.
When a program search command is subsequently issued from the input section 16, the system control circuit 17 is composed of, for example, a microcomputer, which supplies the input program number to the decoder 18 and performs the control described later. The decoder 18 decodes the memory address of the data memory 15 corresponding to the program number, reads the target image number stored at the corresponding address in the memory area, and reads the system control circuit 17
And the matching detection circuit 19. Upon receiving this target image number, the system control circuit 17 controls the pickup position servo device 20 to move it to the information reading point (light spot) of the pickup 3 at that address position, and then starts the reproduction operation from that position. Make up.

The video signal which is the demodulation output of the video demodulation circuit 7 is also supplied to the data separation circuit 21. The data separation circuit 21 separates / extracts data corresponding to the image number from the video signal. This data is decoded by the decoder 22 into an image number that changes momentarily with the progress of reproduction and is supplied to the match detection circuit 19. The match detection circuit 19 includes, for example, a register for storing the target image number given from the data memory 15, a register for storing the reproduced image number obtained from the disc 1, and a match circuit for monitoring the match between the values of both registers. Including, the target image number and the reproduced image number are constantly compared, and if they match each other, a write command is issued for a time corresponding to one field period or one frame period (depending on whether the video memory 8 is a field memory or a frame memory). A signal is emitted and the value of the register for the target image number is cleared when the signal disappears. This write command signal is sent to the video memory 8 and the system control circuit 17 via the mode selector switch 23.
Is supplied to. The video memory 8 writes video information while the write command signal is supplied. Further, when the write command signal disappears, the system control circuit 17 controls the pickup position servo device 20 to search again for a predetermined position, preferably the start position of the program corresponding to the program number previously input, After that, control is performed to start the normal reproduction operation from the beginning of the program. When the mode changeover switch 23 is switched to the N side, it becomes the reproduction mode similar to that of the conventional apparatus shown in FIG. 3, and when it is switched to the S side, it becomes the special reproduction mode according to the present invention.

Next, a reproducing operation in the audio-equipped still image reproducing device having such a configuration will be described.

First, an arbitrary number of image numbers corresponding to a desired image are input from the input unit 16 based on a series of image numbers attached to the disc to be reproduced. The data memory 15 stores the input image number in a memory location assigned to each program to which the image belongs.

Then, the mode selector switch 23 is switched to the S side to start the reproduction of the disc. At this time, the number of the program desired to be reproduced is input from the input section 16,
Then, when a program search command is issued from the input unit 16, the decoder 18 decodes the memory address of the data memory 15 corresponding to the program number, and the target image number stored at the corresponding address is the system control circuit.
17 and the match detection circuit 19. System control circuit
Reference numeral 17 controls the pickup position servo device 20 to search the recording position of the video information corresponding to this target image number, and then starts the reproducing operation from that position. Since the reproduced image number obtained from the video information read at this time matches the target image number given from the data memory 15, when this is detected by the match detection circuit 19, the circuit 19 writes the number. A command signal is output. By this write command signal, the video information corresponding to the target image number is written in the video memory 8 for one field or one frame. After that, this video memory 8
The video information written in is repeatedly read and output as reproduced video information, so that a still image is continuously displayed on the monitor 13. Before writing, display on the monitor 13 is prohibited by a squelch circuit (not shown).

On the other hand, when the write command signal output from the match detection circuit 19 disappears, that is, when the writing of the video memory 8 is completed, the system control circuit 17 searches again for the start position of the program corresponding to the program number input in advance. In order to do so, the pickup position servo device 20 is controlled to start the normal reproduction operation from the beginning of the program. As a result, the audio information read from the disc 1 is demodulated by the audio demodulation circuit 5 and sequentially supplied to the speaker 14 as reproduced audio information and output as a normal reproduced sound. Output of audio information to the speaker 14 is prohibited by a squelch circuit (not shown) from the beginning of the program until the reproduction is started. On the other hand, the video information read from the disk 1 is demodulated by the video demodulation circuit 7 and sequentially supplied to the video memory 8. However, since the write command signal is not supplied to the video memory 8, the video information to the video memory 8 is not supplied. No information is written and the previous still image reproduction is continued. When the write command signal output from the match detection circuit 19 disappears, the value of the target image number stored in the register of the match detection circuit is cleared. The operation described above will not be repeated even when the signal arrives again.

By repeating the above series of operations each time an arbitrary program is searched, when each program corresponds to, for example, one piece of music, the desired screen within the playback time is displayed as a still image. You can listen to the song normally from beginning to end while continuing to play.

In the above embodiment, when the target image number is stored in the data memory 15, the image number corresponding to the desired image is input based on the series of image numbers given to the disc to be reproduced. Although it has been stated that an arbitrary number is input from 16, it is most preferable to give a storage command each time a desired image is reproduced while the viewer is watching the moving image displayed on the monitor 13 while the disc is reproduced in advance. This is a method of sequentially storing the image numbers included in the corresponding video information by issuing. FIG. 2 shows the configuration of a still image reproducing apparatus with audio to which this method is applied.

In FIG. 2, a data separation circuit 24 for separating / extracting data corresponding to a program number and an image number from a video signal output from the video memory 8 and a program for the data separated / extracted by the data separation circuit 24. A decoder 25 for decoding the image number and the image number and a gate circuit 26 for supplying the program number and the image number from the decoder 25 to the data memory 15 in response to a storage command from the input unit 16 'are newly provided. The other configuration is the same as that of FIG.

Although the data separation circuit 24 and the decoder 25 are separately provided, it is also possible to use these as the data separation circuit 21 and the decoder 22, and to use the output of the decoder 22 as the input of the gate circuit 26.

In such a configuration, first, the mode changeover switch 23
To the N side to start the normal reproduction operation. And
The moving image displayed on the monitor 13 is monitored, and when the desired screen is reproduced, a storage command is issued from the input unit 16 '. As a result, the gate circuit 26 is opened, and the image number of the screen is supplied to the data memory 15 as the target image number. Since the image number and the program number to which the image belongs are also supplied at the same time, the data memory 15 stores the input image number in the memory area assigned to each program. Similarly, thereafter, by issuing a storage command when a desired screen is reproduced, an arbitrary number of target image numbers are stored in the allocated memory area of the data memory 15. Of course, you may skip the irrelevant parts by fast-forwarding etc. to reach the desired screen, and store the target image number after switching to the frame advance playback or still image playback mode in order to capture the desired screen in character. It doesn't matter.

In this way, if the target image number is stored in the data memory 15, the mode changeover switch 23 is switched to the S side and the disc is normally played back from the beginning. You can get it.

In the above embodiments, when the image number is stored in the data memory 15, the memory area is assigned to each program to which the image belongs, but the program number and the image number are assigned without allocating the memory area. The data is collectively stored at random, and upon reproduction, the batch data having a designated program number is detected by the match detection circuit 19
It is also possible to supply it to and to compare it with the reproduction batch data obtained at the output of the decoder 22. Furthermore,
Although the data memory 15, the decoder 18, the match detection circuit 19 and the like are shown in a hardware configuration, these are represented by the system control circuit 17
It is also possible to configure it together with a microcomputer and process it by software.

Further, in the above-described embodiment, the case where the invention is applied to the video disc player has been described, but the invention can also be applied to the video tape recorder.

As described above, in the audio-equipped still image reproducing apparatus according to the present invention, the image number corresponding to the desired image among the reproduced images on the recording medium is stored in the storage means for each program to which the image belongs. Once the desired program is designated, the playback video information corresponding to the image number belonging to the designated program stored in the storage means is written in the video memory, and then playback is started from a predetermined position, preferably from the beginning of the program. Then, the written video information is sequentially and repeatedly read to be reproduced video information, and the read video information is used as the reproduced audio information as it is, so that a new video expression effect of reproducing only a desired image as a still image It can be obtained with audio.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a block diagram showing another embodiment of the present invention, and FIG. 3 is a block diagram showing a conventional example. Description of main part code 3 …… Optical pickup 5 …… Audio demodulation circuit 7 …… Video demodulation circuit 8 …… Video memory 15 …… Data memory 17 …… System control circuit 19 …… Match detection circuit 20 …… Pickup Position servo device 21,24 …… Data separation circuit 23 …… Mode selector switch

Claims (5)

(57) [Claims] 1. A video memory capable of accumulating at least one field of video information obtained from a recording medium, wherein audio information read from the recording medium is sequentially output as reproduced audio information, and a predetermined image is displayed. A still image reproducing device with audio for writing corresponding video information in the video memory and repeatedly reading out the written video information to output as reproduced video information, which corresponds to a desired image among reproduced images on the recording medium. First input means for inputting an image number, storage means for storing the image number input by the first input means for each program to which the image belongs, and a desired program to be reproduced are designated and input. And a second input means for storing the image numbers stored in the storage means. Writing control means for controlling the reproduction video information corresponding to the image number belonging to the designated program to be written in the video memory, and an information reading point is moved to a predetermined position after the writing in the video memory is completed, and the recording information is recorded from that position. A still image reproducing device with audio, comprising: a control unit for controlling to start reading. 2. The audio-equipped still image reproducing apparatus according to claim 1, wherein the predetermined position is a start position of a designated program. 3. The image number stored in the storage means is stored together with a predetermined location of the storage means assigned to the program to which the image belongs or the program number thereof. A still image reproducing device with a sound according to the item. 4. The writing control means extracts the image number from the video signal read from the recording medium, and the extracted image number matches the image number stored in the storage means. A match detecting means for detecting the coincidence detecting means, and writing the video memory according to the detection output of the match detecting means, and instructing the control means to start moving the information reading point. A still image reproducing device with sound according to item 1 above. 5. The first input means issues an input command each time a desired image is reproduced in a state where the recording medium is reproduced in advance, and the image number included in the reproduced video information at that time is described as the image number. A still image reproducing device with audio according to claim 1 or 3, wherein the still image reproducing device stores the images in order in a storage means.