JPH02260173A - Moving picture recorder - Google Patents

Abstract

PURPOSE:To continuously record the moving picture information of large capacity by providing a scanning control means for controlling the seek and jump writing of a head on the basis of a specified seek and jump area. CONSTITUTION:When the moving picture information is inputted in a controller 8, it is converted into an optical signal, for example, by a conversion means. The optical signal is written on a storage medium (for example, an optical disk 1) which rotates at a constant speed from an optical head 3 while being scanned by a scanning means. At such a time, optional seek and jump area information for the disk 1 is specified. When the controller 8 detects that the head 3 reaches a seek and jump area starting point 11, it stops the output of an optical beam 6 and allows the head 3 to jump to a seek and jump area end point 12. Thereafter, the processing for writing the moving picture information is started again. Thus, the moving picture information obtained a fixed time ago is recorded while keeping the specified moving picture information.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a recording device that manages input moving image information so that it can be rewritten onto a large-capacity storage medium, and particularly relates to a recording device that manages input moving image information in a manner that allows it to be rewritten to a large-capacity storage medium. The present invention relates to a video recording device for processing.

[Conventional technology]

Conventionally, in order to continuously rewrite moving image information in this type of device, a method has been adopted that uses a voice recorder or an endless tape.

Furthermore, the apparatus is configured to sequentially capture moving image information by connecting a plurality of recording apparatuses having the same function and processing the input moving image information.

[Problem to be solved by the invention]

However, in the above conventional example, the following (1) to (3)
) had the following problems.

(1) A recording device that employs the endless method has a problem in that the amount of information to be written becomes extremely small.

(2) When recording by scanning in one direction using magnetic tape (excluding endless format) as a recording medium, after recording has started, in order to rewrite the information again from the recording start section, rewind is required. Because of the operation required, there was a problem in that continuous recording was not possible with a single magnetic tape.

(3) There are problems such as information on the recording medium cannot be read out without interrupting the recording.

This invention was made to solve the above problems, and by continuing writing or reading moving image information inputted by a plurality of heads into a rewritable storage medium in parallel, An object of the present invention is to obtain a moving image recording device that can record/play back moving image information for a certain period of time without interruption.

[Means for Solving the Problems] A moving image recording device according to the present invention includes a converting means for converting input moving image information into a predetermined image signal, and a predetermined image signal modulated by the converting means that can be rewritten. A head for reading/writing moving image information stored in the storage medium, a scanning means for reciprocating the head in a predetermined direction, and arbitrarily specifying seek jump area information for the head storage medium. and a first scan control means that controls seek jump writing of the head based on seek jump area information arbitrarily designated by the designation means.

In addition, a plurality of heads that read/write moving image information stored in a storage medium, a plurality of scanning means that independently reciprocate these heads in a predetermined direction, and a plurality of scanning means that perform reading or writing scanning of each head, respectively. A second scanning control means is provided which performs arbitrary and independent parallel control.

[Operation] In the present invention, when moving image information is input, the converting means converts the moving image information into a predetermined image signal. The converted image signal is written from the head onto the storage medium while being scanned by the scanning means.

At this time, when arbitrary seek jump area information for the storage medium is specified by the specifying means, the first scan control means controls seek jump writing of the head based on the specified seek jump area information, and To prevent rewriting of moving image information on a seek jump area and retain the information.

Furthermore, when a plurality of heads and scanning means are provided for the storage medium, the second scanning control means arbitrarily and independently controls the reading or writing scan of each head in parallel, and constantly reads or writes moving image information. Make writing happen.

[First Embodiment] FIG. 1 is a block diagram illustrating the configuration of a moving image recording device showing a first embodiment of the present invention. 1 is a rewritable optical disk (magneto-optical disk), and an optical disk drive It is rotated at a predetermined speed by a drive motor 2, which will be described later. 3 indicates an optical head, and a head motor (scanning means) not shown.
The image is scanned back and forth in the scanning direction 7 or the scanning direction 9. Reference numeral 4 indicates the innermost circumference of the recordable area of the optical disc 1, and a light beam 6 modulated based on moving image information inputted between the innermost circumference 4 and the outermost circumference 5 or a modulated beam for reading is provided. The optical head 3 emits light onto the optical disk 1 to record and reproduce moving image information.

A controller 8 controls the optical disk drive 2 in general based on a control program (including each procedure in a flowchart described later) stored in the ROM 8a. 8b
is a RAM, which functions as a work area and stores seek jump information designated from an input means (not shown), as well as work information. Reference numeral 10 denotes a seek jump area (shaded area in the figure), which is set according to the input seek jump information. When this shift jump area 10 is set, the optical head 3 jumps in this area and moves to the highest position. The controller 8 executes scanning control so as to scan from the inner circumference 4 to the outermost circumference 5.

Note that when the moving image information is input to the controller 8, a converting means (for example, an optical modulator 27 to be described later) converts the moving image information into, for example, an optical signal. This converted optical signal is written from the optical head 3 onto a storage medium (for example, an optical disk) rotating at a constant speed while being scanned by a scanning means.

At this time, when arbitrary seek jump area information for the optical disc 1 is specified by a specifying means (operation unit not shown) or a command, the controller 8 (also serving as the first scanning control means) changes the specified seek jump area information to the specified seek jump area information. control the seek jump writing of the optical head 3 based on the
Rewriting of moving image information on a seek jump area 10 of an optical disc 1 is prohibited and the information is retained.

That is, if the rewriting method is performed continuously, moving image information up to a certain period of time will always be recorded, but of the moving image information registered on the optical disc 1, the seek jump area 10, that is, the shift jump area Once the start point 11 and the seek jump area end point 12 are set, when the controller 8 detects that the optical head 3 has reached the shift jump area start point 11, the controller 8 stops outputting the light beam 6 and moves the optical head 3 A drive command for causing the optical head 3 to seek-jump to the end point 12 of the shift jump area is output to the scanning drive means, and after the optical head 3 jumps to the end point 12 of the seek jump area, the moving image information writing process is restarted.

In this way, it becomes possible to record moving image information up to a certain period of time while preserving specified moving image information.

FIG. 2 is a block diagram showing an example of a drive circuit for the optical head 3 shown in FIG. 1. Reference numeral 21 is a video input port, into which a video signal is input and FM-modulated by the FM converter 23 in the subsequent stage. . 22 is an audio input port into which an audio signal is input and subjected to FM modulation by an FM converter 24 at a subsequent stage. 25
is an adder which outputs a summed output obtained by adding the FM-modulated video signal and the audio signal to the limiter 26 at the subsequent stage. The limiter 26 shapes the addition output, converts it into a rectangular wave, and outputs the rectangular wave to the optical modulator 27. The optical modulator 27 is the laser 2
The laser beam (light beam) from 8 is modulated based on the input rectangular wave and a recording beam is emitted onto the optical disk 1. A spindle motor 29 rotates the optical disc 1 at a predetermined speed.

FIG. 3 is a block diagram illustrating the configuration of an imaging device that generates a video signal to be input to the video input boat 21 shown in FIG. The image 32 is separated into three primary colors (for example, RED
, GREEN, BLUE) and photoelectrically converted into video signals of three primary colors by image pickup tubes 34 to 36 corresponding to each color component. Amplifiers 37 to 39 amplify the three primary color video signals and output them to the subsequent color encoder 40.
A composite color video signal 41 is output to the video signal input port 21 shown in FIG.

Next, the optical disk seek processing operation according to the present invention will be explained with reference to FIG.

FIG. 4 is a flowchart showing an example of an optical disk seek processing procedure according to the present invention. In addition, (1) to (11
) indicates each step.

First, the controller 8 determines whether or not to record a moving image, for example, the moving image 32, using a recording start switch (not shown). If NO, the process proceeds to step (10) and thereafter, and Y is selected.
If it is ES, the moving image area to be saved (seek jump area 1
Determine whether 1) is necessary by the operator's input operation 2), and if YES, specify the area where the moving image 32 is to be saved (specify the seek jump area start point 11 and seek jump area end point 12) L (11), step Returning to (3), if NO, the optical head 3 is caused to seek jump to the recording start point (3), and the moving image 32 is recorded in the outer circumferential direction (scanning direction 7) (4).

Next, it is determined by a recording stop switch (not shown) whether recording of the moving image 32 has ended or not (5), and if YES, the process proceeds to step (10), where it is determined whether or not to replace the optical disc 1, and if No, processing is performed. end and YES
? , return to step (1).

On the other hand, in step (5), if No, the address information of the optical disk 1 is read to determine whether the optical head 3 has reached the start point of the moving image area to be saved (seek jump area start point 11), and the amount of movement of the optical head 3 is read. Please judge from 6)
, if No, proceed to step (8) onwards; if YES, recording is interrupted and the optical head 3 is made a seek jump to the final point (seek jump area end point 12) of the moving image 32 to be saved (7), and step (4). ).

On the other hand, if the determination in step (6) is No, read the address information of the optical disc 1 and determine whether recording has been completed up to the outermost circumference 5 based on the amount of movement of the optical head 38).
Recording is interrupted, the optical head 3 is caused to seek jump to the innermost circumference 4 (9), and the process returns to step (4).

In this way, when a moving image area to be saved is specified, scanning is controlled so that the optical head 3 jumps over the moving image area, thereby storing moving image information on the optical disc 1 that is prohibited from being rewritten. This can be achieved by keeping the moving image retained and continuing to record moving images in other areas.

In the above embodiment, a case was explained in which a moving image is recorded by a single optical head 3, but as will be described later, a plurality of optical heads 3 are provided and each optical head 3 performs seek scanning individually and in parallel. By controlling it, it is possible to read out the moving image information recorded during the recording of the moving image.

[Second Embodiment] FIG. 5 is a block diagram illustrating the configuration of a moving image recording device showing a second embodiment of the present invention. Components that are the same as those in FIG. 1 are designated by the same reference numerals. be.

In the figure, reference numeral 15 denotes a second optical head (optical head) which is scanned independently of the optical head 3 and emits a light beam for reading moving image information recorded on the optical disc 1 from an arbitrary position. Note that 16 is a light beam.

Note that when a plurality of optical heads 3.15 and scanning means are provided for the optical information recording medium (optical disc 1),
A controller 8, which also serves as a second scanning control means, arbitrarily and independently controls the reading or writing scans of each of the optical heads 3 and 15 in parallel, so that moving image information is constantly read or written.

That is, the registered moving image information is read out regardless of the optical head 3 that is continuously recording moving image information. Therefore, registered moving image information can be read even while the optical head 3 is continuously recording moving image information.

FIG. 6 is a block diagram showing an example of a drive circuit for the optical head 3 shown in FIG. 5, and the same components as in FIG. 2 are given the same reference numerals.

In the figure, 17 is a D/A converter that converts the demodulated signal demodulated by the optical modulator/demodulator 27a into an analog signal. A bandpass filter 18 separates the demodulated analog signal into an audio signal and a video signal, and outputs the signals from the video output port 19 or the audio output port 20.

As you can see from this diagram, rewritable optical disc 1
When reading the information registered above, a light beam emitted from the laser 28 is irradiated onto the rewritable optical disc 1. The reflected light is demodulated by the optical modulator/demodulator 27a. The demodulated signal is converted into a frequency modulated signal by a D/A converter 17, and is supplied to a bandpass filter 18 where it is separated into a video signal and an audio signal and sent to a video output port 19.
Alternatively, it is output from the audio output boat 2o to a video device (not shown) and played back.

Next, with reference to FIG. 7, a moving image recording/reproducing parallel processing operation according to the present invention will be explained.

FIG. 7 is a flowchart illustrating an example of a moving image recording/reproduction parallel processing procedure according to the present invention.

Note that (1) to (20) indicate each step.

First, the controller 8 determines whether a moving image is being played back (1), and if YES, the optical head 15 (for playback) scans in the outer circumferential direction (scanning direction 7) to continue playing back the moving image (2). . Next, determine whether or not a video is being recorded.
), if YES, the optical head 3 (for recording) is scanned in the outer circumferential direction to continue recording moving images (4).

Next, it is determined whether recording by the optical head 3 has ended 5), and if YES, it is determined whether playback has ended 6), and if YES, the process returns to step (1).
If so, it is determined whether the reproduction has been completed up to the outermost circumference 5 (7), and if No, the process returns to step (1), and if YES, the reproduction is interrupted and the optical head 15 is made to seek and jump to the innermost circumference 4 (8). , return to step (1).

On the other hand, if the judgment in step (5) is NO, the outermost 5
Determine whether recording has been completed up to 9), and if NO, return to step (6); if YES, interrupt recording and seek the optical head 3 to the innermost circumference 4 (lO), and return to step (6). .

On the other hand, if the judgment in step (3) is NO, it is decided whether or not to record a moving image (11), and if it is YES, the recording optical head 3 is made to seek jump to the recording start point (12).
), return to step (4).

On the other hand, if the judgment in step (11) is NO, stop the laser light output and stop recording 13), judge whether both recording and playback should be stopped 14), and if No, step (
Return to step 5), if YES, determine whether to replace optical disk 1 (15), if NO, end the process, and select YES.
If S, replace it with any optical disc 116), and judge whether to record and play back on the replaced optical disc 117)
), if No, end the process; if YES, step (
Return to 1).

On the other hand, if the determination in step (1) is NO, it is determined whether a request to play a moving image has been made18),
If YES, make the reproducing optical head 1 seek jump to the reproducing start point (19) and return to step (2); if NO, stop the laser light output and cancel the reproducing process 20)
, return to step (3).

In the above embodiment, only one rewritable optical disc 1 is used, but by arranging a structure in which a plurality of optical discs 1 are sought, the recordable time can be further increased.

Further, in the above embodiment, a case has been described in which moving image information and audio information are simultaneously recorded on the optical disc 1, but the present invention can also be applied to a configuration in which moving images and audio are multiplexed and recorded simultaneously.

Furthermore, in the embodiment described above, by adding high-speed seek jump processing to the specified starting point of the moving image, it is possible to speed up the cueing of the moving image.

In addition, although the above embodiment describes the case where two optical heads are provided to record/play back moving images, by providing an independent optical head, it is possible to record/play back many types of moving images.
It is also possible to perform reproduction processing at high speed, for example, to reproduce a composite image by overlapping a moving image read ahead and a moving image read later.

In the above embodiments, an optical disk or the like is used as a storage medium and video information is stored and managed by an optical head. The same effect as above can be obtained by scanning the head. Furthermore, writing to a storage medium is not limited to the above-mentioned magnetic head, but the present invention can also be applied to a system in which moving image information is retrieved by moving a stylus electrode, such as an electrostatic method.

(Effects of the Invention) As explained above, the present invention includes a conversion means for converting input moving image information into a predetermined image signal, and a rewritable storage of the predetermined image signal converted by the conversion means. A head for reading/writing moving image information stored in the storage medium, a scanning means for reciprocating the head in a predetermined direction, and a specification for arbitrarily specifying seek jump area information for the head storage medium. and the first scan control means for controlling the seek jump writing of the head based on the seek jump area information arbitrarily specified by the specifying means, so that a large amount of moving image information can be continuously recorded. In addition, it is possible to continue recording moving images while retaining some of the recorded images.

Therefore, clear moving images can be recorded endlessly while maintaining desired images.

In addition, a plurality of heads read/write moving image information stored in a storage medium, a plurality of scanning means independently reciprocally scan these heads in a predetermined direction, and a read/write scan of each head. Since the second scanning control means is provided to arbitrarily and independently control each optical head in parallel, each optical head can be scan-driven independently, and moving image recording processing and moving image reproduction processing can be processed in parallel. Therefore, moving images can be played back at any time independently of moving image recording processing.

Therefore, moving image recording can be performed continuously without interruption while checking the moving image being reproduced, and excellent effects such as being able to record a large amount of desired moving images can be achieved.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating the configuration of a moving image recording apparatus showing a first embodiment of the present invention, FIG. 2 is a block diagram showing an example of a drive circuit for the optical head shown in FIG. 1, and FIG. FIG.
FIG. 5 is a flowchart showing an example of an optical disk seek processing procedure according to the present invention, FIG.
This figure is a block diagram showing an example of a drive circuit for the optical head shown in FIG. 5, and FIG. 7 is a flowchart illustrating an example of a moving image recording/reproducing parallel processing procedure according to the present invention. In the figure, 1 is an optical disk, 2 is an optical disk drive, 3.
15 is an optical head, 8 is a controller, 8a is a ROM, 8
b is RAM.

Claims (2)

[Claims] (1) a conversion means for converting input moving image information into a predetermined image signal; a storage medium for rewritably storing the predetermined image signal converted by the conversion means; a head for reading/writing moving image information, a scanning means for reciprocating the head in a predetermined direction, a specifying means for arbitrarily specifying seek jump area information of the head with respect to the storage medium, and an arbitrary specifying unit from the specifying means. a first scan control means for controlling seek-jump writing of the head based on the seek-jump area information. (2) Read out the moving image information stored in the storage medium/
A plurality of heads for writing, a plurality of scanning means for independently reciprocating these heads in a predetermined direction, and a second scanning control means for arbitrarily and independently controlling read or write scanning of each head in parallel. The moving image recording device according to claim 1, further comprising: