JPH06113325A - Picture recorder and picture reproducing device - Google Patents

Abstract

PURPOSE:To simplify the device configuration by sequentially recording entire standard picture data of the standard television system corresponding to high definition picture data and plural partial standard picture data to a recording medium. CONSTITUTION:The picture recording and reproducing device main body 1 is provided with a picture recording section 2 recording a high definition picture by the standard television system, a picture reproduction section 3 reproducing the recorded high definition picture by the standard television system, and an operation control section 4 operating and controlling the entire device. Since the entire pattern of a high definition picture pattern corresponding to the high definition picture data and its partial detailed pattern are recorded sequentially onto a recording medium random-accessible by the standard television system, the outline of the high definition picture pattern and its detail are recorded by using a recording device of the standard television system. Furthermore, since a picture is recorded onto the recording medium in the unit of fields or frames, an optional field or frame is accessed and reproduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for dividing and recording and reproducing a TV (Television) screen, and in particular to a high-definition screen such as computer graphics for NTSC, PA.
The present invention relates to an image recording device and an image reproducing device which convert, record and reproduce into a screen of a standard television system such as L and SECAM.

[0002]

2. Description of the Related Art Conventionally, when recording and reproducing a high-definition screen using a standard television recording / reproducing apparatus, the high-definition screen is divided into a plurality of screens, and each screen is divided into a plurality of D screens. A / A converter (digital / analog converter) performs D / A conversion, and recording / reproducing is performed in parallel by a plurality of standard television recording / reproducing devices. However, when reproducing a high-definition screen on a standard television type display using the plurality of recording / reproducing devices described above, it is necessary to display using a plurality of displays.

On the other hand, there is one in which a high-definition screen is divided into a plurality of signals of a standard television system and recorded on a continuous recording medium such as a video tape in a time-division manner. However, since recording is performed continuously, it is necessary to have a recording medium for the recording time and each divided screen is cut out.
The means for outputting could not be shared and was needed individually.

[0004]

However, the above-mentioned conventional apparatus has a problem that the apparatus configuration becomes large and the cost increases.

Therefore, an object of the present invention is to simplify and reduce the cost of an image recording apparatus for recording a high-definition screen with a standard television recording apparatus and an image reproducing apparatus for reproducing the standard television reproducing apparatus. To do.

[0006]

In order to solve the above-mentioned problems, the first invention is a storage means for storing high-definition image data input from the outside on a screen-by-screen basis based on a recording control signal. At least a part of the high-definition screen corresponding to the high-definition image data stored in the storage means is the entire screen, and the entire screen is converted to the entire standard image data of the standard television system based on the high-definition image data. High-definition image data conversion means for sequentially converting and outputting, dividing the entire screen into a plurality of divided screens, and sequentially converting each divided screen into partial standard image data corresponding to the standard television system and outputting the partial standard image data. , Random access of the whole standard image data and a plurality of the partial standard image data corresponding to the whole standard image data in a field unit or a frame unit And recording means for sequentially recording the performance recording medium is configured to include a recording control means for generating and outputting the recording control signal corresponding to the input timing of the higher resolution image data.

In the second aspect of the invention, the entire standard image data of the standard television system corresponding to one entire high definition screen and a plurality of partial image data each corresponding to a part of the high definition screen are field units. Alternatively, a randomly accessible recording medium sequentially recorded in frame units, designation means for designating any image data of the entire standard image data and the partial image data recorded on the recording medium, and the designation Reproduction means for selectively reproducing and outputting the whole standard image data or the partial image data designated by the means from the recording medium.

[0008]

According to the first aspect of the invention, the recording control means generates the recording control signal corresponding to the input timing of the high definition image data and outputs it to the storage means. The storage means stores the high-definition image data input from the outside based on the recording control signal in units of one screen. The high-definition image data conversion means sets at least a part of the high-definition screen corresponding to the high-definition image data stored in the storage means as the entire screen, and the entire screen is based on the high-definition image data as a standard television system. Of the entire standard image data is sequentially converted and output, the entire screen is divided into a plurality of divided screens, and each of the divided screens is sequentially converted into partial standard image data corresponding to the standard television system and output to the recording means. To do.

As a result, the recording means sequentially records the entire standard image data and the plurality of partial standard image data corresponding to the entire standard image data on the randomly accessible recording medium in the field unit or the frame unit.

Therefore, the entire standard image data of the standard television system corresponding to the high definition image data and a plurality of partial standard image data are sequentially recorded on the recording medium.

According to the second aspect of the invention, the recording medium has a plurality of standard image data of the standard television system corresponding to one entire high-definition screen and a part of the high-definition screen. The partial image data is sequentially recorded in field units or frame units, and the designating unit designates any image data among the entire standard image data and the partial image data recorded in the recording medium.

As a result, the reproducing means selectively reproduces and outputs the entire standard image data or the partial image data designated by the designating means from the recording medium.

[0013]

Embodiments of the present invention will now be described with reference to FIGS. First Embodiment FIG. 1 shows a schematic system configuration when the image recording / reproducing apparatus according to the first embodiment is incorporated in a train operation management system.

The train operation management system 100 includes a monitoring control device 101 for performing various controls and various monitoring necessary for train operation such as signal control, point switching control and train passage detection, and a train under the control of the monitoring control device 101. Display 102 for displaying the operation state, and display 10
An input unit 103 such as a keyboard for a supervisor to input various control commands to be given to the monitor control device 101 based on the display state of 2, and an operation state recorded in preparation for an abnormal situation such as an accident or a failure, Image recording / reproducing device 104 for reproduction
And are provided.

The image recording / reproducing apparatus 104 includes an image recording / reproducing apparatus main body 1 and a standard television CRT (Cathod).
e Ray Tube), and is configured. FIG. 2 is a block diagram showing an outline of the image recording / reproducing device 104. In the following description, one high-definition screen (1024 × 5
One standard television system screen (512 × 256 dots: hereinafter referred to as the entire standard screen) corresponding to the entire high-definition screen and four parts corresponding to each part of the high-definition screen divided into four. A case will be described in which recording and reproducing are performed by dividing the screen into 512 standard television screens (512 × 256 dots: hereinafter, referred to as partial standard screens).

The image recording / reproducing apparatus main body 1 is roughly classified into
An image recording unit 2 for recording a high definition image in a standard television system, an image reproducing unit 3 for reproducing the recorded high definition image in a standard television system, and an operation control unit 4 for operating and controlling the entire apparatus. , And are configured. In this embodiment, the image recording unit 2 and the image reproducing unit 3 record high-definition image data as video data of a standard television system on a video disk (hereinafter referred to as VD) 6 (hereinafter referred to as a video disk recorder (hereinafter referred to as VD)). , VDR.) 7 are shared. Here, the VDR 6 has a function of arbitrarily recording / reproducing (random access) to a recording position of a frame number given in advance to the VD 6.

The image recording section 2 receives the input high definition image data D _HD (1024 × 512 dot digital RG).
B data, horizontal sync data H and vertical sync data V)
To a standard television system, such as the NTSC system (51
2 × 256 analog RGB signals dots corresponding), and records the scan converter 5 for converting the standard image data D _N, such as horizontal and vertical synchronizing signals, sequentially VD6 the output signal of the scan converter 5 VDR7
And are provided.

As shown in FIG. 3, the scan converter 5 includes a frame memory 5A for storing the high definition image data D _HD in units of frames and a part of the high definition image data D _HD stored in the frame memory 5A. excised, and assembling memory 5B for assembling the standard image data D _N, the standard image data DN assembled in the assembling memory 5B
Is stored and held until it is transferred to the VDR 7 and held therein, and a controller 5D for controlling each of the memories 5A, 5B and 5C.

The image reproduction section 3 is provided with a frame memory FM for storing the standard image data D _N of the standard television system, which is the reproduction output of the VDR 7, in frame units.

The operation control section 4 controls the operation input section 4A for giving various operations and instructions, the recording timing or the reproduction timing, and the controller 4B for controlling the entire apparatus, and the control signals from the controller 4B. The time code generator 4C that outputs the time code T to the VDR 7 based on the above. The time code T includes time information such as what frame of what number of hours, minutes and seconds.

Next, the operation of the image recording / reproducing apparatus will be described separately for recording and reproduction. 1) During recording FIG. 4 shows a timing chart during recording. In this case, the scan converter 5 causes the high definition image data D
It is assumed that the time required to cut out one piece of standard image data D _N from _HD is 5 frames of the original high definition screen (image data).

The original high definition screen is composed of 1024 × 512 dots as shown in the conceptual diagram of FIG.
This is the entire standard screen ALL (51
2 x 256 dots) and 4 standard partial screens A, B,
It shall be recorded as C and D, and this shall be one block. At this time, it takes 32 frames to record one high-definition screen. It should be noted that the time required to reproduce one frame of the original high definition screen is the time required to reproduce one frame of the standard screen (1/30
Second).

First, the scan converter 5 fetches the high-definition image data D _HD into the internal frame memory 5A one by one. Here, the controller 4B outputs to the controller 5D of the scan converter 5 a control signal C _S , which is a cutout command for the entire standard screen ALL, in anticipation of the time required for cutting out the standard image data D _N for 5 frames. . The controller 5D of the scan converter 5 is controlled by the control signal C _S, which is a cutout command for the entire standard screen ALL.
From the high-definition screen data D _{HD of the} frame currently stored in the frame memory 5A to the assembling memory 5B.
Is used to cut out the standard image data D _N corresponding to the entire standard screen ALL. In this case, the first three frames are used for checking various operations. In addition, partial standard screen B and partial standard screen D
The last two frames corresponding to are also used for the same purpose.

When the cutout of the entire standard screen ALL is completed after 5 frames have elapsed after the output of the control signal C _S which is a cutout command, the contents of the assembling memory 5B are transferred to the output buffer memory 5C. At this time, the controller 4B instructs the VDR 7 to record the standard image data D _N corresponding to the entire standard screen ALL to the recording position of the predetermined frame number of VD 6 by the control signal C _V. As a result, the VDR 7 records the contents of the output buffer memory 5C, that is, the standard image data D _N corresponding to the standard screen A in the VD 6. In this case, the entire standard screen A in VD6
If the recording frame number of the standard image data D _N corresponding to LL is N _ALL , N _ALL = 5n + 1 (n = 0, 1, 2, 3, ...) At the recording position having the recording frame number, the entire standard screen ALL is displayed. Record the corresponding standard image data D _N. Here, n is a block number, and here, an example is shown in which the block number starts from 0. In this case, the standard image data D _N corresponding to the entire standard screen ALL is held in the output buffer memory 5C for 8 frames, but the VDR 7 allows access time as shown in FIG. , The standard image data D _N is captured in the sixth frame. As a result, the desired standard image data D _N can be surely taken into the VDR 7.

At this time, the controller 4B also outputs a control signal C _T for writing the time code T as one of the other data to be recorded together with the image data D _N to the time code generator 4C, and The time code T including information and the like is recorded in the VD 6. As a result, random reproduction can be easily performed by using this time code T.

In parallel with this, the controller 4B outputs the control signal C _S , which is a cutout command for the entire standard screen ALL, and at the time when 8 frames have elapsed after the control signal C _S , which is a cutout command for the partial standard screen A, is output. and outputs the C _S to the controller 5D scan converter 5, thereby scan converter 5, after cutting out the end of the whole standard screen ALL, the high-definition screen data D _HD frames are taken into the frame memory 5A at that time, the assembly The standard image data D _N corresponding to the partial standard screen A is cut out using the memory 5B. When the cutout of the partial standard screen A is completed after the lapse of 5 frames after the output of the cutout command control signal C _S , the contents of the assembling memory 5B are transferred to the output buffer memory 5C. At this time, the controller 4B causes the control signal C _V to record the standard image data D _N corresponding to the partial standard screen A at the recording position of the predetermined frame number of VD6 at VDR7.
Instruct. As a result, the VDR 7 records the contents of the output buffer memory 5C, that is, the standard image data D _N corresponding to the partial standard screen A in the VD 6. In this case, assuming that the recording frame number of the standard image data D _N corresponding to the partial standard screen A in the VD 6 is N _A , the recording frame number of N _A = 5n + 2 (n = 0, 1, 2, 3, ...) The standard image data D _N corresponding to the partial standard screen A is recorded at the recording position. In this case, the standard image data D _N corresponding to the partial standard screen A is held in the output buffer memory 5C for 5 frames. Similarly, in the VDR 7, the access time is taken into consideration and the result shown in FIG. As shown, the standard image data D _N is captured in the third frame.

At this time, the controller 4B also outputs a control signal C _T for writing the time code T as one of the other data to be recorded together with the image data D _N to the time code generator 4C, and The time code T including information and the like is recorded in the VD 6.

Further, in parallel with the cutout of the partial standard screen A,
Then, the controller 4B uses the cutout command of the partial standard screen A.
Some control signal C_SWhen 5 frames have passed after outputting
Then, the control signal C which is a cutout command of the partial standard screen B_SThe
This is output to the controller 5D of the can converter 5.
As a result, the scan converter 5 turns off the partial standard screen A.
After projecting, take it into the frame memory 5A at that time
High-definition image data D of the open frame_HDFrom, for assembly
The partial standard screen B is cut out using the memory 5B. VD6
Recording of partial standard screen A and switching of partial standard screen B to
When the output is completed, the contents of the assembling memory 5B are output.
Transfer to the buffer memory 5C. As a result, VDR7
The contents of this output buffer memory 5C are recorded in VD6.
It In this case, the partial standard screen B in VD6
Standard image data D corresponding to_NRecording frame number
To N_BThen, N_B= 5n + 3 (n = 0, 1, 2, 3, ...) Partial standard image at the recording position with the recording frame number
Standard image data D for surface B _NTo record. And so on
Partial standard screens C and D are sequentially cut out and VD7 is used for VD
6. Record. In this case, the partial standard screens C and D
Standard image data D_NRecording frame number
N_C, N_DIs N_C= 5n + 4 (n = 0, 1, 2, 3, ...) N_D= 5n + 5 (n = 0, 1, 2, 3, ...). In this case, high-precision screen every 5 frames
1 standard screen and 4 cut out from each
The partial standard screens of one sheet are represented by the same n as shown in FIG.
Is recorded at the recording position. This allows the recording frame
Easy playback of dynamic screens using mobile numbers
Will be possible.

The fetch timing of the high-definition image data D _{HD in} the frame memory 5A is limited, for example, at the time of a cutout command of the entire standard screen ALL, and at other times, the same high-definition image data D _HD is set. If control is performed so as to hold the data, one piece of standard image data and four pieces of partial standard image data correspond to high-definition image data at the same time, and the screen at that time can be reproduced accurately. . This may be selected according to the application.

Further, in parallel with this, the controller 4B
Causes the standard screen data D _N output from the scan converter 5 via the VDR 7 to be directly output to the frame memory FM. As a result, in the frame memory FM, the entire standard screen AL is displayed in a predetermined recording area based on the control signal C _F.
Standard screen data of L and partial standard screens A, B, C, D are sequentially written. Further, the controller 4B controls the frame memory FM by the control signal C _F to switch the reproduction area in which the recorded data should be reproduced approximately every 5 frames, and the whole standard screen ALL → partial standard screen A → partial standard screen B →
The partial standard screen C and the partial standard screen D are displayed in this order on the CRT. As a result, the images being recorded in the VD 6 are sequentially displayed on the CRT, and the recording state can be easily confirmed. 2) During playback Fig. 7 shows a timing chart during playback. In the following description, the case where a command for displaying the partial standard screen A is input from the operation input unit 4A will be described.
Further, it is assumed that the display is performed at 1 screen / 1 second during normal reproduction, and is performed at 1 screen / 0.2 second during fast-forward reproduction. i) During normal reproduction (see FIG. 7A) First, the controller 4B controls the VDR by the control signal C _V.
7 is controlled to reproduce the recording frame number N, that is, the recording position of N = 5n + 2 (n = 0). As a result, the standard image data D _N corresponding to the partial standard screen A ₁ is reproduced (see FIG. 6), so that the partial standard screen A is stored in the frame memory FM.
The data of ₁ is written, and the partial standard screen A ₁ is displayed on the CRT by reproducing this data after the writing. The data of the partial standard screen A written in the frame memory FM is held at least until the next rewriting timing of the partial standard screen A ₁ (= the time corresponding to 30 frames has elapsed).

Next, the controller 4B controls the control signal C _V.
The VDR7 is controlled by the recording frame number N,
That is, N = 5n + 2 (n = 1) recording positions are reproduced. As a result, the data of the partial standard screen A ₂ is reproduced, the data of the partial standard screen A ₂ is written in the frame memory FM, and the CR
The partial standard screen A ₁ continues to be displayed on T.
Partial standard screen A after completion of writing for the _second frame memory FM, so that the partial standard screen A ₂ in CRT are displayed by switching the reproduction area in the recording area of the partial standard screen A _2. Similarly, the data of the partial standard screen A ₂ written in the frame memory FM is held at least until the next rewriting timing of the partial standard screen A ₂ (= corresponding to 30 frames (1 second)).

Similarly, the controller controls the VDR to sequentially reproduce the data of the partial standard screens A ₃ , A ₄ , ... And sequentially write the data in a predetermined recording area of the frame memory FM to switch the sequential reproduction area. To display on the CRT.

In this way, it is possible to easily display a desired screen, the entire standard screen or any partial standard screen. Further, in the above description, the case of the partial standard screen display has been described, but the display of the entire standard screen ALL can also be performed by the same processing. Since the entire standard screen ALL is an original high-definition screen compressed and recorded, it is possible to easily grasp the outline of the recording screen, and to search for a recording portion in an abnormal state. ii) During fast-forward playback (see FIG. 7B) In the above normal playback, the holding time for one screen is set to 3
Although the time corresponding to 0 frame (= 1 second) is set, the fast-forward reproduction can be easily performed if the holding time of one screen is set to the time corresponding to 6 frames (= 0.2 second) during the fast-forward reproduction. Therefore, it is effective when, for example, a screen in which an abnormal state to be checked is recorded is searched at high speed.

According to the first embodiment, a high-definition image can be reproduced as a still image by using a partial standard screen without deterioration or loss of the image, and by displaying the entire standard screen, a high-definition image can be displayed. Since a screen corresponding to the entire screen can be easily displayed by using a normal television CRT,
When the screen of computer graphics (1024 x 512 dots) changes every few seconds, that is, when it is not necessary to record and reproduce a complete moving image, the display screen can be reproduced (replayed). Can be backed up for a predetermined time.

More specifically, in the train operation management system described above, the graphics screen used for controlling the operation status of the train can be backed up in preparation for verification in the event of an abnormality. In such applications, it is necessary to use the entire standard screen in order to roughly understand the overall state, and to read the characters etc. to check the abnormal parts, so it is the same as the original screen (high definition screen). It may be used so as to reproduce the partial standard screen that can obtain the resolution of.

As described above, according to the first embodiment, the conventional apparatus for recording / reproducing high-definition images (moving images) in the same format or the standard television recording / reproducing apparatus for the number of divisions is used. It can be simplified and the cost can be kept low as compared with other products. Further, since it is possible to use the whole screen when it is desired to know the outline of the high definition screen and to use the partial screen when sufficient resolution is required, it is possible to perform efficient and quick reproduction. Second Embodiment In the first embodiment, the one having the function of sequentially recording one whole standard screen and four partial standard screens as the contents of the frame memory, holding them for a predetermined time, and reproducing them one after another was used. In the second embodiment, five frame memories corresponding to one whole standard screen and four partial standard screens are provided in parallel, and these are switched by two matrix switchers.

FIG. 8 shows the configuration of the second embodiment. In FIG. 8, the same parts as those in the first embodiment of FIG. 2 are designated by the same reference numerals, and detailed description thereof will be omitted. The image recording / reproducing apparatus of the second embodiment is different from the image recording / reproducing apparatus of the first embodiment in an image reproducing section 3, and the image reproducing section 3 is a standard television standard image which is a reproduction output of a VDR 7. The data D _N is stored in the frame memories FM _ALL , FM _A , FM _B , FM.
Matrix switcher 3A for selectively outputting to _C and FM _D and each frame memory FM _ALL , FM _A , FM _B ,
The standard image data D _N output from FM _C and FM _D is C
Matrix switcher 3B for selectively outputting to RT
And are provided.

As shown in FIG. 9, the matrix switcher 3A includes five switches SW _ALL1 , SW _A1 , SW _B1 ,
SW _C1 and SW _D1 are provided, and the switches SW _ALL1 , SW _A1 , and SW are provided by the control signal C _MA from the controller 4B.
_B1, SWC1, SW _D1 is turned on / off, standard image data D _N of each frame memory _{FM ALL, FM A, FM B} , F
Selectively output to M _C and FM _D.

The matrix switcher 3B has five switches SW _{AL L2} , SW _A2 and S as shown in FIG.
_Includes W _B2 , SW _C2 , and SW _D2 , and controller 4B
Each switch SW _ALL2 , S by the control signal C _MB from
W _A2 , SW _B2 , SW _C2 , and SW _D2 are turned on / off, and each frame memory FM _ALL , FM _A , FM _B , FM _C , FM
The standard image data D _N from _D selectively outputs the CRT.

Next, the operation will be described separately for recording and reproducing. 1) At the time of recording Since the only difference from the first embodiment at the time of recording is the display operation on the CRT, the operation will be described below.

In parallel with writing the standard screen data to VD, the controller 4B directly outputs the standard screen data D _N output from the scan converter 5 via the VDR 7 to the matrix switcher 3A. As a result, the matrix switcher 3A sends the standard screen data of the whole standard screen ALL and the partial standard screens A, B, C, D based on the control signal C _MA to the frame memories FM _ALL , FM _A , FM.
Output to _B , FM _C and FM _D respectively and write. Further, the controller 4B controls the matrix switcher 3B by the control signal C _MB, and the CR 4C is controlled almost every 5 frames.
Switching the frame memory connected to T, the entire standard screen A
Display on the CRT in the order of LL → partial standard screen A → partial standard screen B → partial standard screen C → partial standard screen D. As a result, the images being recorded in the VD 6 are sequentially displayed on the CRT, and the recording state can be easily confirmed. 2) During reproduction (during normal reproduction) Next, the operation during normal reproduction will be described with reference to FIG.

First, the controller 4B controls the control signal C._V
The VDR7 is controlled by the recording frame number N,
That is, the recording position of N = 5n + 2 (n = 0) is reproduced. This allows a partial standard image
Surface A₁Standard image data D corresponding to_NIs played (Figure
6), the matrix switcher 3A and
Rix Switcher 3B frame memory FM_ACorresponding to
Switch SW _A1And switch SW_A2Turn on and others
Switch SW_ALL1, SW_B1~ SW_D1, Switch SW
_ALL2, SW_B2~ SW_D2Is turned off. This allows
Frame memory FM_APartial standard screen A₁Data of
This is written, and as a result, the partial standard screen A is displayed on the CRT.₁Is the table
Will be shown. This frame memory FM_AWrite on
The data of the embedded partial standard screen A is at least for the next
Partial standard screen A₁Rewriting timing (= 30 frame phase
It is retained until the time elapses).

Next, the controller 4B controls the control signal C._V
The VDR7 is controlled by the recording frame number N,
That is, N = 5n + 2 (n = 1) recording positions are reproduced. This allows a partial standard image
Surface A₂Data is reproduced. At this time, Matrix
Itcha 3A frame memory FM_B1Corresponding to
Ji SW_B1Turn on the other switch SW_ALL1, SW_C1, S
W_D1Is turned off. In addition, the partial standard screen A₂The frame
Home memory FM_BUntil writing is completed.
Switch switch 3B is switch SW_A2Turn on the other
Switch SW _ALL2, SW_B2~ SW_D2Left off
It As a result, the frame memory FM_BPartial standard picture
Surface A₂Data is written to the CRT and
Minute standard screen A₁Will continue to be displayed. Partial standard
Screen A₂Frame memory FM_BWrite to
After that, the switch SW of the matrix switcher 3B_B2The
Switch other switches_ALL2, SW_A2, SW_C2~ SW_D2
Is turned off. As a result, the partial standard screen A is displayed on the CRT.
₂Will be displayed. This frame memory FM_B
Partial standard screen A written in₂The data for
If not, the next partial standard screen A₂Rewriting timing (=
It is held up to 30 frames (1 second).

Similarly, the controller controls the VDR to reproduce the data of the partial standard screens A ₃ , A ₄ , ... Sequentially and sequentially to the frame memories FM _C , FM _D , FM _ALL , F.
Write to M _A , ..., Sequential matrix switcher 3A,
Display on CRT by switching 3B.

As a result, the same effect as that of the first embodiment can be obtained. In addition, the same can be done during fast-forward reproduction. As described above, according to each embodiment, one high-definition screen is time-division-processed and random-access recording / reproducing is performed. Therefore, one standard television recording medium and recording / reproducing device are used. It is possible to record and reproduce a high-definition screen. Also, in each of the above embodiments, only one VDR was used,
By connecting a plurality of VDRs and switching them as necessary, continuous recording / reproduction for a long time becomes possible. Furthermore, similar effects can be obtained if a recording / reproducing device other than VD and VDR is randomly accessible.

Furthermore, in each of the above embodiments, the processing is performed in frame units, but it is also possible to perform processing in field units. In this case, the recording medium includes, for example, one whole standard screen and 4 standard screens.
When recording one partial standard screen, the entire standard screen A
LL first field, second field, partial standard screen A first field, second field, partial standard screen B
The first field, the second field, the first field of the partial standard screen C, the second field, the first field of the partial standard screen D, and the second field may be sequentially recorded at the recording positions.

Furthermore, in each of the above embodiments,
The entire standard screen and partial standard screen were created for the entire high definition screen, but it is also possible to configure to create the entire standard screen and partial standard screen for a part of the high definition screen. Is. As a result, the unnecessary portion (screen) is not recorded, and the processing speed can be increased by effectively using the recording medium and reducing the processing data.

[0048]

According to the first aspect of the present invention, the whole screen of the high definition screen corresponding to the high definition image data and the partial detailed screen thereof are sequentially recorded on the randomly accessible recording medium of the standard television system. Therefore, it is possible to record the outline and details of the high-definition screen using one standard television recording device. Further, since the image is recorded on the recording medium in units of fields or frames, it is possible to access and reproduce any field or frame.

According to the second aspect of the invention, the reproducing means selectively reproduces and outputs the whole standard image data or the partial image data designated by the designating means from the recording medium, so that a desired image can be easily reproduced. Can be made. Therefore, even if the details cannot be grasped on the screen based on the entire standard image data, the details can be easily grasped on the screen based on the corresponding partial image data, and the standard television system reproducing apparatus is used. Nevertheless, you can easily grasp the outline of the high-definition screen and easily check the details.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a specific application example of a first embodiment.

FIG. 2 is a schematic configuration block diagram of an image recording / reproducing apparatus of a first embodiment.

FIG. 3 is a schematic configuration block diagram of a scan converter.

FIG. 4 is a timing chart during a recording operation.

FIG. 5 is an explanatory diagram of a recording state of a high definition screen.

FIG. 6 is an explanatory diagram of a recording state on VD.

FIG. 7 is a timing chart during a reproducing operation.

FIG. 8 is a schematic block diagram of an image recording / reproducing apparatus in a second embodiment.

FIG. 9 is a schematic configuration block diagram of a matrix switcher 3A.

FIG. 10 is a schematic configuration block diagram of a matrix switcher 3B.

[Explanation of symbols]

1 ... Image recording / reproducing apparatus main body 2 ... Image recording unit 3 ... Image reproducing unit 3A, 3B ... Matrix switcher 4 ... Operation control unit 4A ... Operation input unit 4B ... Controller 4C ... Time code generating unit 5 ... Scan converter 5A ... Frame memory 5B ... Assembly memory 5C ... Output buffer memory 5D ... Controller 6 ... VD 7 ... VDR 100 ... Train operation management system 101 ... Monitoring control device 102 ... Display 103 ... Input unit 104 ... Image recording / reproducing device CRT ... (Standard television system ) CRT C _SE ... Select signals C _S , C _V , C _T , C _MA , C _MB , C _FALL , C _{FA to} C _FD ...
Control signal D _HD ... High-definition image data _DN ... Standard image data FM _ALL , FM, FM _{A to} FM _D ... Frame memory SW _ALL1 , SW _{A1 to} SW _D1 ... Switch SW _ALL2 , SW _{A2 to} SW _D2 ... Switch T … Time code

Front page continued (72) Inventor Kazuaki Sugawara 1-4-1 Meguro, Meguro-ku, Tokyo Pioneer Co., Ltd. (72) Inventor Hideo Ito 1-4-1 Meguro, Meguro-ku, Tokyo Pioneer Co., Ltd. Within

Claims (3)

[Claims] 1. Storage means for storing high-definition image data input from the outside on a screen-by-screen basis based on a recording control signal; and high definition corresponding to the high-definition image data stored in the storage means. At least a part of the screen is a whole screen, and based on the high definition image data, the whole screen is sequentially converted into whole standard image data of a standard television system and output, and the whole screen is divided into a plurality of divided screens. High-definition image data conversion means for dividing and sequentially converting each of the divided screens into partial standard image data corresponding to the standard television system, and a plurality of the whole standard image data and a plurality of units corresponding to the whole standard image data A recording unit for sequentially recording the partial standard image data of the recording medium on a recording medium that can be randomly accessed in field units or frame units; An image recording apparatus comprising: a recording control unit that generates and outputs the recording control signal corresponding to the input timing of the fineness image data. 2. The image recording apparatus according to claim 1, wherein a set of standard image data consisting of a set of the entire standard image data and a plurality of the partial standard image data is converted from the same high definition image data. An image recording device characterized by: 3. An entire standard image data of a standard television system corresponding to an entire high definition screen and a plurality of partial image data respectively corresponding to a part of the high definition screen are sequentially recorded in a field unit or a frame unit. A randomly accessible recording medium, a designating unit for designating any image data of the entire standard image data and the partial image data recorded on the recording medium, and the designating unit designated by the designating unit. An image reproducing apparatus comprising: a reproducing unit that selectively reproduces and outputs the entire standard image data or the partial image data from the recording medium.