JP2003299006A - Recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display a image signal output from a recording apparatus always at the same position on a screen when connected to a multiplexer. <P>SOLUTION: In a state that a divided display mode is set in the multiplexer, when a copy mode or an alarm search mode is set, only a specific ID signal is added to the image signal output from the recording apparatus and the image is output to the multiplexer, so that a copy screen, etc., is displayed at a specific position on the monitor screen connected to the multiplexer. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device connected to a screen splittable device such as a frame switcher or a multiplexer in a surveillance system.

[0002]

2. Description of the Related Art In a surveillance camera system, a frame for displaying a video signal from a plurality of cameras and a video signal reproduced from a recording device in which the video signals from the plurality of cameras are recorded is divided into one screen and displayed. There is a switcher or multiplexer. This frame switcher or the like displays a plurality of video signals on one screen in a divided manner, so that different I signals are used in the vertical synchronization section of the video signals from each camera.
The D information is added, and the video signal from which camera is displayed at which position on the screen is displayed according to the ID information.

However, in the reproduced image of the recording device connected to the frame switcher or multiplexer, the still mode is set, and this screen is copied to another recording medium (CompactFlash (registered trademark) & memory stick). In some cases, the screen to be stopped does not know which CH to stop depending on the timing at which the still button is pressed. The copying function is rarely performed in the case of a VCR, which is a removable recording device, but in a recording device using an HDD as a recording medium, the medium itself is overwritten and it is difficult to adopt a removable system configuration. In this regard, the function to copy only important points to another recording medium is adopted.

Similarly, a disk recording medium such as an HDD has more search detection functions than a VCR, and the detection setting screen of the search screen can be said to be the same as at the time of copying, depending on the timing of the screen to be stopped. I do not know where it appears on the MPX screen.

[0005]

For example, taking the copy function as an example, when searching for a screen to be copied on a TV screen in a 16CH multiplexer or the like, the copying operation must be performed by chasing the screen to be copied. I have to. However, since the screen of the 16CH multiplexer is displayed small on the monitor screen, there is a problem that the confirmation screen for copying and the like becomes small and it is difficult to confirm.

[0006]

[Means for Solving the Problems] The above copy screen,
The ID of a fixed CH (for example, CH1) is used on the recording device side without using the CH ID reproduced when the operation is performed, and the ID of the fixed switch (eg, CH1) that was in the frame switcher or multiplexer.
Is added and output.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, when performing an operation such as copying from a recording device, the ID information for each frame switcher or multiplexer has already been disclosed or decoded in advance. Using the information, a switching circuit is provided in the video output circuit to output a signal to which an ID (for example, CH1) is added by the microcomputer and FPGA.

An embodiment of the present invention will be described based on a recording device using an HDD. As shown in FIG. 1, this recording device is composed of a main IC (1) and its peripheral circuits,
Main IC (1) is ASIC including CPU2 and high-speed hardware
(Circuits other than the CPU). Although not shown, a multiplexer to which a plurality of cameras are connected and an output from the multiplexer are input to the video decoder 21. The video signal is A / D converted by the video recorder 2, input to the ASIC through the digital interface 3 of the main IC (1), and stored in the memory 5 via the bus line 4.
Recorded in. In addition, 6 is a memory controller.
The video signal sent to the memory 5 is divided into a recording signal and an EE signal for confirming the recording signal. The verification video signal is
The video ENC block 7 built in the ASIC is D / A converted by the video D / A circuit 8, and the Y system signal is added with an ID in the block 9 for inputting an ID, and further Y /
It is output as a video signal by the C MIX circuit 10. The video signal for recording is H together with the video signal as VBI data of the camera NO added from the multiplexer or the like.
Record DD (not shown).

In this configuration, there is also an OSD (on-screen circuit) block 11 for creating and displaying a menu screen or the like in the digital signal portion inside the ASIC,
Video EN when displaying OSD screens such as menus
The video signal from the C block 7 is switched and output.
The image recorded in the memory 5 is compressed and converted by the MJPEG (motion JPEG) circuit 12 for recording and can be recorded in the HDD (not shown).
HDD via D interface 13 and buffer 14
(Not shown).

At the time of reproduction, the data read from the HDD (not shown) is recorded in the memory 5 via the bus line 4 and again through the bus line 4 to the MJPEG circuit 12
Sent to and stretched. The decompressed data is sent again to the memory 5 through the bus line 4 and the video ENC block 7
At D, the video D / A circuit 8 performs D / A conversion, the ID signal is added to the Y system signal at the ID input block 9, and the Y / C MIX circuit 10 outputs the Y signal as a video signal.

The normal system-like processing (key acquisition (operation key) 22, display, backup) is controlled by the sub-microcomputer 15. Reference numeral 16 is a circuit for creating a thumbnail. 17, 1
Reference numeral 8 is an AISC reference signal generation circuit. Reference numeral 19 is an interface circuit through which a video signal is copied to the flash memory 20. FIG. 2 is a block diagram showing the internal configuration of the ID driving circuit 9. Video D /
The Y signal output from the A circuit 8 outputs the Y system signal by the video switching SW31 controlled by the FPGA mode OUT30 which is the output from the sub microcomputer.
It is switched whether to output the Y-system signal to which the ID signal is added.

The Y-system output of this video signal is separately sent to the sync separation IC (32) to be V (vertical sync signal) for FPGA.
& H (horizontal synchronization signal) & field determination signal is created. The FPGA 33 uses the ID driving instruction from the sub-microcomputer 15 in the FPGA mode OUT30 and the V (vertical synchronizing signal) & H (horizontal synchronizing signal) & field determination signal sent from the sync separation IC to output two signals of the ID driving timing pulse (ID Switching ON and ID level switching signal) is created. The ID signal has a white level and a black level 2
Levels are prepared.

First, the user sets the manufacturer on the menu screen as to which manufacturer's frame switcher or multiplexer is to be used in combination with the recording apparatus of the present invention. This is because the content of the ID and which part of the video signal the ID is added to differs depending on the manufacturer.

For example, when the user copies a specific image to the flash memory 20 or the like, the copy mode is set on the menu screen, and the image recorded by the recording device of the present invention is set to the reproduction state or the still state, and the necessary Perform a copy operation in the scene. Also, when there is an illegal intrusion, an alarm signal is added to the VBI data together with the camera number and the like and recorded in this recording device. Based on the VBI data,
You can search and display the alarm screen while playing. At this time, when the multiplexer or the like is in the split display state, if the ID is simply added based on the camera number added to the VBI data, the copy screen and the copy screen are displayed at various positions on the monitor screen connected to the multiplexer. The still screen is displayed, and the user has to determine at which position the screen displayed is the copy mode or the still screen, which is annoying.

Therefore, when a camera to be played back is searched for such a copy operation or an alarm screen, a specific ID is given to the playback video regardless of the camera number of the VBI data.
Only (for example, an ID indicating the upper left position of the screen) is added so that the copy screen or the search screen is displayed at a specific position on one screen. Note that the method of adding the signal to the VBI data at the time of alarm is not directly related to the present invention, and therefore its explanation is omitted.

FIG. 3 shows the timing of this ID driving circuit. The ID signal is, for example, a 5 BIT signal at the VBI signal position of the video signal and a CH signal of 16CH +
The parity bit information is added and input to the frame switcher or multiplexer.

FIG. 4 is a flow chart showing the processing of the sub-microcomputer part. It is determined whether or not the process uses ID such as copying, and the output ON signal and the manufacturer name of MPX are transmitted to the FPGA. First, regarding the processing on the microcomputer side, in step 1, the sub-microcomputer 15 confirms the state (what mode it is in) of the recording device of the present invention, and displays a copy screen for copying to the flash memory 20 of the menu. It is determined whether it is in the displayed state (S2). If the copy screen is displayed, the multiplexer ID
The information is notified to the FPGA 33 (S3). For the ID information of the multiplexer, it is necessary for the user to select the multiplexer to be connected to the recording device in advance from the menu screen. The ID of the content depending on the selected information
Is to be added.

Next, the operation contents of the FPGA side (33) will be shown next. This is a case where the ID is added in step 3, but in the case of adding, white and black signals are added from a predetermined position of the video signal to a predetermined position. When the video signal addition start position is reached (S4), it is determined whether or not a white signal is to be added, and the addition of the white signal at the white signal addition position and the black signal at the black signal addition position is repeated up to a predetermined position (S5, S6). , S7).
If the copy status is not set in step 2, the ID is not added (S8) and the normal screen is output (S9).

This frame switcher or multiplexer displays a predetermined camera image at a predetermined position on the screen based on the added ID information. However, since the ID itself is set by the manufacturer, the content of the ID information is Only when the ID pattern can be disclosed or decoded in advance and the ID pattern is known.

Further, the manufacturer of the recording apparatus of the present invention to be used in combination with the multiplexer (which manufacturer's ID is added) can be selected on the menu screen or the like on the recording apparatus side. Such a system,
The system uses the selected result.

[0021]

EFFECTS OF THE INVENTION By using IDs adapted to each frame switcher or multiplexer on the recording device side, it is only necessary to pay attention to CH1 (the position on the most visible screen) during copying, so that confirmation work is required. It will be easy. Further, not only at the time of copying, but also at the search screen and the menu screen, the CH number can be determined, which facilitates the confirmation work.

[Brief description of drawings]

FIG. 1 is an HD using an HDD according to an embodiment of the present invention.
It is a block diagram of a D recorder.

FIG. 2 is a block diagram of an ID driving unit that is an embodiment of the present invention.

FIG. 3 is a timing chart of an ID driving unit that is an embodiment of the present invention.

FIG. 4 is a flow chart of an ID driving determination process which is an embodiment of the present invention.

[Explanation of symbols]

9: ID driving block 11: OSD circuit 15: Sub-microcomputer 20: Flash memory 22: Operation key

Claims (3)

[Claims] 1. In a recording device used in combination with a frame switcher or a multiplexer that divides and displays images from a plurality of cameras on one screen, a menu display means for displaying a menu screen, and the menu screen A mode setting means for setting a mode and an ID signal adding means for adding an ID signal indicating to which position on the screen the image is to be displayed to the image signal are provided, and at least while connected to the frame switcher or the multiplexer. A recording device, wherein only a specific ID is added to a video signal when a predetermined mode is set on the menu screen. 2. The mode setting means sets means for setting a maker of a frame switcher or a multiplexer to which the recording device is connected, and I for determining an ID to be added based on the set maker.
The recording apparatus according to claim 1, further comprising a D determining unit. 3. The recording apparatus according to claim 1, wherein the predetermined mode is at least a copy mode or an alarm search mode.