JPS63268384A - Recorded information reproducing device - Google Patents

Abstract

PURPOSE:To set a mode at a reproducing mode suitable for a reproducing image, by controlling the reproducing mode by reproducing mode data stored at the time of responding to position data stored by address information separated from information being read from a recording medium. CONSTITUTION:An address decoder 6 samples and decodes the address information such as a frame number and a time code, etc., being inserted in the prescribed section of a demodulated video signal, and supplies it to a controller 9. A reproducing mode control circuit 15 performs the address control of a picture memory 7, etc., responding to a command from the system controller 9, and sets the reproducing mode at one of a normal reproducing mode, a still picture reproducing mode, a stroboscopic reproducing mode, a gradation lowering reproducing mode, and a mosaic image reproducing mode. In such a way, it is possible to reproduce a still picture in the gradation lowering mode, and to constitute so as to commonly use two or more reproducing modes.

Description

[Detailed description of the invention] Technical field The present invention relates to a recorded information reproducing device.

Background Art A recorded information reproducing device (hereinafter simply referred to as an information reproducing device) that reproduces information recorded on a recording medium has a memory, and writes video information read from the recording medium to the memory. Devices have already been devised that enhance the effect of the reproduced information by changing the playback mode through address control or the like when reading out the video information.

The playback modes in such conventional information playback devices include a normal playback mode in which video information is sequentially played back in the order in which it was recorded, a still image playback mode in which video information is played back as still images, and a strobe mode in which video information is extracted and played back at predetermined intervals. There are a reproduction mode, a gradation reduction reproduction mode in which video information is reproduced with a reduced gradation, a mosaic image reproduction mode in which video information is reproduced like a mosaic image, etc. Still image reproduction is performed by writing video information for one field or one frame into a memory, and then repeatedly reading out the written video information. Strobe reproduction is performed by rewriting the contents of the memory at predetermined intervals with video information read from a recording medium while still images are being reproduced. Gradation reduction playback is performed by reducing the number of bits in the level direction of the video information written to the memory. Further, mosaic image reproduction is performed by repeatedly reading data of the same pixel written in the memory within a rectangular area.

However, conventional information reproducing devices are provided with a plurality of operation keys or switches for specifying each of these reproduction modes, and one of the plurality of reproduction modes must be selected by manual operation. Ta.

It is necessary to select the playback mode appropriately depending on the content of the image, but in order to obtain the best effect, the operator has to perform key operations while viewing the playback image and playback sound that change with time. This required a number of operations. Another disadvantage is that even if an operating procedure suitable for the reproduced image is found, the same operation must be performed each time reproduction is repeated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an information reproducing apparatus that can set a reproduction mode suitable for a reproduced image by a simple operation.

An information reproducing device according to the present invention stores playback mode data indicating a specified playback mode and position data indicating a position where video information to be played back in the specified playback mode is recorded, and reads the information from a recording medium. When the address information separated from the stored information corresponds to the stored position data, the playback mode is controlled by the stored playback mode data.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, a recording disk 1 is rotationally driven by a spindle motor 2. As shown in FIG. An RF (high frequency) signal carrying video information etc. is read from the recording disk 1 by a pickup 3.

The position of the information detection light spot of the pickup 3 is controlled in the radial direction of the recording disk 1 by a tracking servo mechanism 4. The tracking servo mechanism 4 receives a jump command in the case of a reproduction mode that requires a jump operation (track skipping operation) such as double-speed reproduction, and causes the information detection light spot of the pickup 3 to jump in response to this jump command.

The RF multiplied signal read from the recording disk 1 by the pickup 3 is supplied to a demodulation circuit 5 comprising an FM demodulator and the like. The video signal is demodulated by the demodulation circuit 5 and supplied to the address decoder 6 and the image memory 7. The image memory 7 is provided with an A/D converter that converts an input video signal into a digital signal as data to be written in the memory, and a D/A converter that converts data read from the memory into an analog signal. There is. The video signal output from the image memory 7 is supplied to the monitor 16 to obtain a reproduced image. The address decoder 6 extracts and decodes address information such as a frame number and time code inserted into a predetermined section of the demodulated video signal. The output data of this address decoder is supplied to the controller 9. The controller 9 is supplied with the output of the addressing key 10. The address designation keys 10 include a numeric keypad 10a for inputting numerical values, a key 10b for selecting whether address designation is to be performed by frame number or time code, and a start or end key for designating the start or end of special playback mode. 10c etc.

The controller 9 is further supplied with the outputs of a floppy disk drive control key 11 and a reproduction mode designation key 12. The controller 9 is formed by a microcomputer including a processor, ROM, interface circuit, etc.

In the controller 9, the processor executes the input program according to a program stored in advance in the ROM.
It writes to the AM 13 and sends various commands to the floppy disk drive 14 and reproduction mode control circuit 15.

The playback mode control circuit 15 performs address control of the image memory 7 in response to commands from the system controller 9, and sets the playback mode to normal playback mode, still image playback mode, strobe playback mode, gradation reduction playback mode, and mosaic playback mode. The screen is configured to be set to one of the image playback modes.

Note that, for example, since it is also possible to reproduce still images in gradation reduction mode, it is also possible to configure so that two or more reproduction modes can be used together.

There are two possible methods for specifying the special playback mode and the section in which it is to be executed. The first method is to specify the playback mode to be executed using the playback mode specification key 12, specify the frame number or time code that is the address to start a special playback mode by operating the address specification key 10, and press the start key. push. Next, in the same manner, the frame number or time code, which is the address for ending the special playback mode, is specified and the end key is pressed. The above program operations are performed via the controller 9.
It is stored in AM13. Moreover, since this program creation is stored in the RAM 13 via the controller 9 by key operation, it can be executed regardless of the read operation of the disk 1.

The second method is to use the address code recorded in a predetermined section of the disc 1 output from the address decoder 6 instead of using the numeric keypad to specify the address while watching the playback image of the disc 1. be. According to this method, when reading the disc 1 as a still image at the place where you want to start special playback without having to use the troublesome numeric keypad operation, and operating the start key, the address code recorded on the disc passes through the address decoder 6. The address data input to the controller 9 is stored in the RAM 13 as a start address. Similarly,
At the point where you want to end special playback, read disc 1 as a still image and press the end key to read the RAM.
The end position address is automatically stored in 13.

As mentioned above, the data programmed using the two methods is stored in RAM 1B, and special playback is automatically performed when the program is played back as described later, but once the program is created, it is also lost when the power of the playback machine is turned off. Put it away. Therefore, by operating the floppy disk drive control key 11, data in the RAM 13 can be transferred to the floppy disk drive 14 via the controller 9, making it possible to permanently save program data once created. . RAM from the floppy disk drive 14 via the controller 9 as necessary.
By transferring program data to 13, programmed special playback operations can be executed at any time.

As described above, when performing special reproduction according to the program stored in the RAM 13, it is performed by giving a command to the controller 9 to automatically execute the special reproduction according to the program. The controller 9 compares the momentary address code of the disc 1 sent from the address decoder 6 with the address data stored in the RAM 1B to start special playback, and if a match is detected, the controller 9 starts the process from that point onwards. A command is issued to the reproduction mode control circuit 15 to perform the specified special reproduction mode.

Similarly, when a match is again detected between the address data stored in the RAM 1B and the code from the address decoder 6, the next special reproduction mode is started from that address position. At this time, if it is programmed to end the special playback mode, the normal playback mode will be resumed.

In the above embodiment, only the reproduction mode data and address data are stored in the RAM 13, but the R
It is also conceivable to store data indicating the playback order of each section in the AM 13 so that playback is performed in the designated playback order.

Furthermore, it is also possible to use an IC card or the like instead of a floppy disk.

Effects of the Invention As detailed above, the information reproducing apparatus according to the present invention stores playback mode data indicating a specified playback mode and data indicating a position where video information to be played back in the specified playback mode is recorded. However, when the address information separated from the information read from the recording medium corresponds to the stored position data, the playback mode is controlled by the stored playback mode data. The playback mode can be set in advance to the desired mode, and when the same disc is played repeatedly, there is no need to repeat the operation to set the playback mode. This allows you to switch to a playback mode.

[Brief explanation of the drawing]

The drawing is a block diagram showing one embodiment of the present invention. Explanation of symbols of main parts 6...Address decoder 7... Image memory 9... Controller 13...RAM

Claims (1)

[Claims] A recorded information playback device that reads video information recorded on a recording medium together with address information indicating a recording position, writes it into a memory, reads the written video information from the memory, and plays it back. storage means for storing playback mode data indicating a playback mode indicated by the playback mode data and position data indicating a recording position on the recording medium of video information to be played back in the playback mode indicated by the playback mode data; address information separation means for separating address information from the information stored in the memory; and when the separated address information corresponds to recording position data stored in the storage means, the address information is separated into a memory by playback mode data stored in the storage means. 1. A recorded information reproducing apparatus comprising: reproduction mode control means for controlling a reproduction mode by controlling the reproduction mode.