KR101498674B1 - Video signal switching apparatus and system - Google Patents

Abstract

Disclosed is an apparatus for processing video signals and control data related to an input/output device of various user desks and images from multiple facilities to remotely monitor and control, by the multiple user desks, the multiple facilities. The apparatus for switching video signals comprises: a video input unit which includes multiple input slots, and is connected to each facility to receive, from the facilities, a video through input ports of an input slot corresponding to each of the facilities, wherein the input slots include multiple input ports; an video output unit which includes multiple output slots and connects to each of the user desks to process input/output data from each of the input/output devices of the user desks and videos from the facilities, wherein the output slots each include multiple output ports, and each output port corresponds to each user desk; and a video switching unit which forms a signal transmission path between an input port corresponding to a reception unit connected to a selected facility and an output port corresponding to a first user desk when the first user desk selects a facility, and which blocks the paths between output ports corresponding to other desks and an input port corresponding to the reception unit connected to the facility selected by the first user desk.

Description

TECHNICAL FIELD [0001] The present invention relates to a video signal switching apparatus and a video signal switching apparatus,

The present invention relates to a video signal switching apparatus and system, and more particularly, to a video signal switching apparatus and a video signal switching apparatus, And more particularly, to a video signal switching apparatus and system for enabling a plurality of users to more stably and efficiently monitor and control a plurality of facilities.

Generally, in an environment in which a plurality of facilities such as an LCD or a semiconductor manufacturing facility are arranged, in order to monitor a plurality of users through input / output devices and to control each facility, It is necessary to construct various complex signal processing systems for efficiently processing mouse data (PS / 2), RS232 (UART), and various control data. As one of such signal processing systems, a matrix-type video signal processing method having a plurality of input slots and output slots can be considered.

As an example of a video signal processing system, a multi-matrix video signal processing system capable of performing multiple input and output of video signals and capable of converting video signals is disclosed in Korean Patent No. 10-0951875 (April 1, 2010 Date registration, hereinafter referred to as " Prior Art 1 ").

The prior art 1 is characterized in that the input control means includes at least one input port and receives a video signal from the first electrical apparatus and a video signal is output to the output port of the output control means corresponding to the input port of the input control means And an output port connected to the second electric device, wherein the signal switching means includes at least one output port for receiving a video signal from the signal switching means, converting the video signal into a video signal of a predetermined digital transmission system, Output control means for controlling the input control means, the signal switching means and the output control means so as to confirm the video signal and the input port from the first electric device, Is converted into a video signal corresponding to the set digital interface standard, and the output corresponding to the confirmed input port A multi-matrix video signal processing system having a central control device for outputting to a second electric device connected to a port so that multiple input and output of video signals can be performed and conversion processing between video signals is enabled have.

The prior art 1 improves the disadvantages of the conventional communication router architecture that supports only the linear expansion function and thus can generate and provide various types of video signals. However, since a large number of users (up to 24) Up to 48) can not be directly applied to the system. In addition, in the same manner as in the prior art 1, there is a phenomenon of screen breakage, that is, a screen delay phenomenon at the time of screen switching of the input / output device on the operator side, which causes the increase of the working time and the efficiency to be lowered. Furthermore, due to the characteristics of LCD and semiconductor manufacturing lines, toxic chemicals and toxic gases are widely used in various process facilities, and due to the necessity of maintaining a clean manufacturing environment, It is necessary to monitor them and process the video signals so as to efficiently control the facilities.

Korean Registered Patent No. 10-0951875 (registered on Apr. 1, 2010)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a video signal switching apparatus and a video signal switching method for processing video and control data to control equipments remotely from a local site, Apparatus and system.

Another problem to be solved by the present invention is to provide a partition monitoring screen such as a 2-partition, 4-partition, 6-partition or 8-partition to the input / output device of the user desk so that an operator can efficiently monitor facilities through a user desk In addition, the present invention provides a video signal switching device and a system for providing a genlock function to eliminate a screen break phenomenon at the time of video switching.

In order to remotely monitor and control a plurality of facilities by a plurality of user desks, the video signal switching apparatus according to one aspect of the present invention for solving the above-mentioned problems, A video signal switching device for processing images from installations, the device comprising: a plurality of input slots-each of the input slots including a plurality of input ports, An image input unit connected to each of the facilities to receive input through an input port of a corresponding input slot; Wherein each of the plurality of output slots and output slots includes a plurality of output ports, wherein input / output data from the input / output devices of each of the user desks, Each of the user desks corresponding to each of the user desks is connected; And a signal transmission path between an input port corresponding to the receiving unit connected to the selected equipment and an output port corresponding to the first user desk when the one of the facilities is selected by the first user desk And an image switching unit for blocking an output port corresponding to other user desks and an input port corresponding to a receiving unit connected to the facility selected by the first user desk.

According to an embodiment, the image output unit may include: a first memory that stores first image data - each first image data is image data of each of the facilities; A second memory for storing second image data and second image data each of which is image data for displaying a divided screen to the user desks; A resynchronization signal generator for generating a resynchronization signal for eliminating a screen transition delay of an image; The first image data input through the plurality of input ports from the image switching unit is received and stored in the first memory, the first image data is loaded from the first memory, A Zen lock part for outputting in synchronization;

A scaling unit for receiving the first image data from the genlock unit to generate the second image data, storing the second image data in the second memory, and loading the second image data from the second memory and outputting the second image data; And a video output MUX for receiving the first video data and the second video data from the genlock unit and the scaling unit and providing the first video data and the second video data to the user desk according to the selection of the user desk.

A video signal processing system according to an aspect of the present invention includes a local site including a plurality of facilities and an optical cable for connecting a plurality of facilities of the local site to each of a plurality of user desks And a remote site for remotely monitoring and controlling through an input / output device of the input / output device, wherein the local site is connected to each of the facilities, A plurality of transmitters for converting and transmitting data into an optical signal, the remote site comprising: a plurality of user desks each comprising an input / output device; A plurality of receivers for receiving an optical signal from each of the plurality of transmission units through an optical cable and converting the optical signal into a standard signal compatible with an input / output device of the plurality of user desks; And a video signal switching device according to claim 1 or 2.

According to an embodiment, the video signal processing system includes a server desk for monitoring and controlling a state of the main matrix unit; A backup matrix unit for replacing the main matrix unit when an abnormal situation occurs in the main matrix unit during monitoring at the server desk; A first matrix selector for blocking a path between the user desks and the main matrix unit under the control of the server desk and switching to a path between the user desks and the backup matrix unit; And a second matrix selector for blocking a path between the receiving units and the main matrix unit under the control of the server desk and switching to a path between the receiving units and the backup matrix unit.

According to an embodiment, the image signal processing system may be connected to the receiving units via the second matrix selector when an abnormal situation occurs in the main matrix unit and the backup matrix unit, And a direct control desk that remotely monitors and controls the main matrix unit or the backup matrix unit without going through.

According to one embodiment, the video signal processing system may be configured to control the video signal processing system based on I / O device-related control data from the plurality of user desks or a control signal from the server desk, the main matrix unit, the backup matrix unit, Or a console box part for providing a path for controlling the receiving parts.

According to one embodiment, the video signal processing system further includes a control line extension unit connected to the console box unit and directly connected to the control line, for extending the control line to the main matrix unit and the backup matrix unit .

According to an embodiment, the video signal processing system further includes local input / output units connected to each of the plurality of transmission units, for directly controlling each of the plurality of transmission units.

The present invention provides an improved video signal switching device and a system including the same for processing video and control data to monitor and efficiently control facilities from a local site where facilities are located, Division monitoring screen such as 2, 4, 6, or 8 divisions is provided on the input / output device side of the I / O device so that the operator can efficiently monitor the facilities through the user desk, and the genlock function So that it is possible to reduce the number of times of image switching.

1 is a block diagram for explaining a video signal processing system including a video signal switching apparatus according to an embodiment of the present invention,
FIG. 2 is a block diagram specifically illustrating a flow of various signals in the video signal processing system including the video signal switching apparatus according to the embodiment of the present invention, which corresponds to FIG. 1,
3 is a block diagram illustrating a specific example of a video signal switching apparatus according to an embodiment of the present invention,
FIG. 4 is a block diagram showing a specific example of the video output unit 2520 of the video signal switching device 250 of FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. It is to be noted that the accompanying drawings and description thereof are intended to illustrate the present invention in order to assist those of ordinary skill in the art in understanding the present invention. It is therefore to be understood that the appended drawings and description thereof do not limit the scope of the invention.

FIG. 1 is a block diagram for explaining a video signal processing system including a video signal switching apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram of a video signal switching apparatus according to an embodiment of the present invention, FIG. 3 is a block diagram illustrating a specific example of a video signal switching apparatus according to an embodiment of the present invention. FIG. 4 is a block diagram of a video signal processing apparatus according to an embodiment of the present invention. FIG. 8 is a block diagram illustrating a specific example of the video output unit 2520 of the video signal switching device 250.

1 and 2, a video signal processing system including a video signal switching device according to an embodiment of the present invention includes a plurality of facilities 110_1 to 110_n (PC1 to PC48) A local site 100 and a plurality of facilities 110_1 to 110_n of the local site 100 are connected by an optical cable (indicated by orange in FIG. 2) to a plurality of user desks 300 And a remote site 200 for remotely monitoring and controlling the plurality of facilities 110_1 to 110_n through the input / output devices 310, 320 and 330 of the NxN Desk.

The local site 100 includes a plurality of facilities 110_1 to 110_n and a plurality of transmitters 120_1 to 120_n (KVM Transmitters 1 to 48). In addition, it may further include a plurality of local input / output units 130_1 to 130_n (Local Keypad, Local KVM).

The plurality of facilities 110_1 to 110_n may be, for example, LCD or semiconductor processing equipment, but is not limited to these facilities, and can be applied to any environment where a plurality of users need to remotely control a plurality of facilities.

The plurality of transmitting units 120_1 to 120_n are connected to the plurality of equipments 110_1 to 110_n to transmit the video of the connected equipments and the input / output device related control data of the plurality of user desks 300 to the optical signal ) And transmits it to the remote site 200 side.

The local input / output units 130_1 to 130_n are respectively connected to the transmitters 120_1 to 120_n to directly control the facility in the local site 100 through the transmitters 120_1 to 120_n. However, in the case where each facility is directly controlled through the local input / output units 130_1 to 130_n, it is not normal, but a communication failure between the local site 100 and the remote site 200, And there is a need to control the facility directly.

2, the number of each of the facilities, transmitting units, and local input / output units in the local site 100, i.e., n is set to 48, but the number is not necessarily limited to this number, and may be further reduced or further expanded.

The remote site 200 includes a plurality of user desks 300 (NxN Desk), a plurality of receivers 210_1 to 210_n (KVM Receivers 1 to 48), and a video signal switching device, ≪ / RTI > unit 250 (KVM MATRIX 1). The remote site 200 includes a server desk, a backup matrix unit 260, a first matrix selector KVM switcher, a second matrix selector KVM selector, 48, a console box unit 280 (Consoly Box), and a control line extension unit 290 (UART Selector).

Each of the plurality of user desks 300 includes an input / output device 310, 320, 330. Although a plurality of user desks 300 are displayed on only one block 300 in FIG. 1 and FIG. 2, for example, 24 user desks can be provided, and each of them can monitor and control have. When each of the user desks 300 desires to select any one of the plurality of facilities 110_1 to 110_n, the user desks 300 are selectively displayed on the display device 320 for monitoring or the display device 330 for facility operation A matrix keypad 310 is provided.

The plurality of receivers 210_1 to 210_n are connected to the plurality of transmitters 110_1 to 110_n by optical cables to receive optical signals from the transmitters 110_1 to 110_n, Output devices 310, 320, and 330 of the input / output devices 310, 320, and 330, respectively. Of course, the standard signal should also be compatible with other input / output devices within remote site 200.

The main matrix unit 250 of the video signal switching apparatus according to the present invention allows each of the plurality of user desks 300 to connect the plurality of equipments 110_1 to 110_n and the plurality of user desks 300 Check the status. That is, for example, equipment used by an operator other than the first user is displayed in red on the matrix keypad (e.g., 310) of one of the user desks (first user desks) (If any) in use is displayed in green, and facilities not used by anybody are displayed in blue so that the current status of all of the plurality of facilities 110_1 to 110_n can be confirmed. In addition, when the first user's desk selects a specific one of the plurality of facilities 110_1 through 110_n, the main matrix unit 250 provides an image of the selected facility to the first user desk 300 side And switches input / output device related control data of the first user desk 300 to be provided to the selected equipment side. At the same time, the selected facility is switched so that it is not selected by other user desks. By doing so, when an operator is working on a specific facility at the first user desk, it is possible to prevent another worker from approaching the facility through another user desk. Here, the input / output device related control data refers to input / output signals of various standards (for example, PS2, RS-232, DVI, RJ-11, etc.).

The main matrix unit 250 includes an image input unit 2510, an image output unit 2520, a control data switching unit 2530, and an image switching unit 2540. This will be further described with reference to FIG.

The image input unit 2510 includes a plurality of input slots (for example, an input slot having eight input ports, and having nine input slots), and an image from the plurality of receivers 210_1 to 210 - Through the input ports of the input slots corresponding to each of the input ports 210_1 to 210_n. That is, each of the plurality of receivers 210_1 to 210_n may be connected to each of a plurality of input ports of each of a plurality of input slots. As shown in FIG. 3, for example, Transition Minimized Differential Signaling (TMDS), High Definition Multimedia Interface (HDMI), and DVI (Digital Video Interface) standards are adopted as the video input unit 2510. In addition, the image input unit 2510 may perform re-clocking and equalizing operations for the basic correction of the image, and may further include AD converting means for converting an analog signal into a digital signal if necessary .

The video output unit 2520 includes a plurality of output slots (for example, an output slot having eight output ports, and having nine output slots), and the input / output from the input / output devices of each of the plurality of user desks Each of the plurality of user desks corresponding to each of the plurality of output ports is connected so as to process the image and data from the plurality of facilities 110_1 to 110_n. That is, each of the plurality of user desks can be connected to each of a plurality of output ports of each of the plurality of output slots. 3, the video output unit 2520 includes means for implementing a gen-lock function for eliminating delays in screen switching and means for displaying a monitoring screen divided into a plurality of user desks Means are also provided. This will be described in more detail below with reference to FIG. The video output unit 2520 may further include DA converting means for converting a digital signal into an analog signal, if necessary.

The control data switching unit 2530 is a unit for switching control data input through a keyboard, a mouse, or the like of the plurality of user desks 300. [

When one of the plurality of facilities 110_1 to 110_n is selected by the first user desk among the plurality of user desks 300, the image switching unit 2540 selects the corresponding facility (e.g., 110_1) A signal transmission path is formed between an input port corresponding to the reception unit 210_1 connected to the first user desk and an output port corresponding to the first user desk, and an output port corresponding to user desks other than the first user desk, And blocks the input port corresponding to the receiving unit connected to the equipment selected by the user desk. The image switching unit 2520 controls the switching of 72 x 72 matrices and the input slots of the image input unit 2510 and the output slots of the image output unit 2520. The control data switching unit 2530, As shown in FIG.

Next, an example of the video output unit 2520 will be described in detail with reference to FIG. The video output unit 2520 includes a first memory 2523, a second memory 2525, a resynchronization signal generation unit 2521, a genlock unit 2522, a scaling unit 2524, and a video output MUX unit 2526 For example, if the video output unit 2520 has nine input slots and output slots, the configuration of the video output unit 2520 shown in FIG. 4 will be nine.

The first memory 2523 stores the first image data in association with the genlock unit 2522 and provides the first image data to the genlock unit 2522 side. Each of the first image data is image data of each of the plurality of facilities 110_1 to 110_n, and is image data for displaying the entire screen on the user desk 300 side.

The second memory 2525 stores the second image data in association with the scaling unit 2524, and provides the second image data to the scaling unit 2524 side. Each of the second image data is image data for displaying a divided screen on the user desk 300 side. Here, the split screen is a monitoring screen in which images of 2, 4, 6 or 8 facilities are displayed in one monitor.

The resynchronization signal generator 2521 generates a resynchronization signal in order to eliminate a screen transition delay of an image. For example, the resynchronization signal generator 2521 may receive a synchronization signal from the image switching unit 2530 and generate a resynchronization signal from the synchronization signal.

The ZenLock unit 2522 receives first image data input from each of the plurality of input ports of the plurality of input slots from the image switching unit 2530 and stores the received first image data in the first memory 2523, Data from the first memory 2523 and resynchronizes the data with the resynchronization signal and outputs the data to the scaling unit 2524 and the video output MUX unit 2526 side. Genlock is an abbreviation of Generator Lock, which means that it is fixed to a Sync Generator. In order to apply effects to image sources, signals are generated at exactly the same time period To be electrically connected to each other. Here, resynchronization is performed using the resynchronization signal generated by the resynchronization signal generator 2521.

The scaling unit 2524 receives the first image data from the genlock unit 2522 and generates second image data from the second image data and stores the second image data in the second memory 2525 and outputs the second image data to the second memory 2525 And outputs it to the video output MUX unit 2526 side.

The video output MUX unit 2526 receives the first video data and the second video data from the ZEN lock unit 2522 and the scaling unit 2524 and provides the first video data and the second video data to the user desk according to the selection of the user desk 300, And display on the display devices 320 and 330 on the user desk 300 side.

In the video output unit 2520, the genlock unit 2522, the scaling unit 2524, and the video output MUX unit 2526 may be implemented as one FPGA (Field Programmable Gate Array).

1 and 2, the video signal processing system according to the present invention includes a server desk 240, a backup matrix unit 260 (KVM MATRIX2), a first matrix selection unit 270 ( KVM Switcher), and second matrix selection units 220_1 to 220_n (KVM Selectors 1 to 48). The second matrix selection units 220_1 to 220_n are provided to correspond to the number of the reception units 210_1 to 220_n (for example, 48).

The server desk 240 monitors and controls the state of the main matrix unit 250. The main matrix unit 250 is replaced with the backup matrix unit 260 when an abnormal situation occurs in the main matrix unit 250 during monitoring at the server desk 240. [

The backup matrix unit 260 is used to replace the main matrix unit 250 when an error occurs in the main matrix unit 250. The port for connection to the outside and the basic configuration may be the same as the main matrix unit 250. [

The first matrix selection unit 270 blocks the path between the plurality of user desks 300 and the main matrix unit 250 under the control of the server desk 240, (260). ≪ / RTI >

The second matrix selection units 220_1 to 220_n are provided corresponding to the reception units 210_1 to 220_n and are controlled by the server desk 240 to have a plurality of reception units 210_1 to 220_n and a main matrix unit 250 And switches the path between the reception units 210_1 to 220_n and the backup matrix unit 260. [

The video signal processing system according to the present invention may further include a direct control desk 230 (1x1 Desk). The direct control desk 230 may be connected to the plurality of reception units 220_1 to 220_n through the second matrix selection units 220_1 to 220_n, for example, in a special case such as an abnormal situation of the main matrix unit 250 and the backup matrix unit 260. [ The apparatuses 110_1 to 110_n corresponding to the plurality of reception units 210_1 to 220_n are directly connected to the facilities 210_1 to 220_n via the main matrix unit 250 or the backup matrix unit 270, To monitor and control them.

The video signal processing system according to the present invention may further include a console box unit 280 (Console Box). The console box unit 280 includes a main matrix unit 250, a backup matrix unit 260, and a transmission unit 260. The main matrix unit 250, the backup matrix unit 260, and the transmission unit 260 are controlled by the control data from the server desk 240, (120_1 to 120_n) or the receiving units (210_1 to 210_n).

The video signal processing system according to the present invention may further include a control line extension unit 290 (UART Selector). The control line extension portion 290 is a portion for directly connecting to the control box on the console box portion 280 and extending from the control box portion 280 to each of the control lines from the main matrix portion 250 and the backup matrix portion 260 .

It should be noted that the scope of the present invention is not limited to these specifications, as the control data and the specification of the image transmission line, DVI, RS-232, PS2, RJ-11,

As described above, the present invention provides an improved video signal processing system that can process video and control data to monitor and efficiently control facilities remotely from a local site where facilities are located, So that the operator can efficiently monitor the facilities through the user's desk. In addition, the present invention provides a gen-lock function to reduce the screen disconnection at the time of image switching. Also, as mentioned above, the video signal processing system of the present invention is not limited to LCD equipment or semiconductor equipment, but can be applied to various facilities for remote control.

100: Local site 200: Remote site
110_1 to 110_n: Facilities 120_1 to 120_n:
130_1 to 130_n: local input / output units 210_1 to 210_n:
220_1 to 220_n: second matrix selection unit 230: direct control desk
240: server desk 250: main matrix part
260: backup matrix unit 270: first matrix selection unit
280: console box part 290: control line extension part
300: User desk

Claims (8)

delete A video signal switching apparatus for processing I / O device-related control data and images from the facilities of each of user desks to remotely monitor and control a plurality of facilities by a plurality of user desks,
Each of the plurality of input slots - the input slots including a plurality of input ports, for receiving images from the installations through an input port of an input slot corresponding to each of the installations, A video input unit connected to the video input unit;
Wherein each of the plurality of output slots and output slots includes a plurality of output ports, wherein input / output data from the input / output devices of each of the user desks and an image from the installations are processed, Each of the user desks corresponding to each of the user desks is connected; And
When one of the facilities is selected by the first user desk, switching is performed so that a signal transmission path is formed between an input port corresponding to a receiving unit connected to the selected equipment and an output port corresponding to the first user desk, And an image switching unit for interrupting an output port corresponding to the user desks outside and an input port corresponding to the receiving unit connected to the facility selected by the first user desk,
Wherein the image output unit comprises:
A first memory for storing first image data - first image data each of which is image data of the facilities;
A second memory for storing second image data and second image data each of which is image data for displaying a divided screen to the user desks;
A resynchronization signal generator for generating a resynchronization signal for eliminating a screen transition delay of an image;
The first image data input through the plurality of input ports from the image switching unit is received and stored in the first memory, the first image data is loaded from the first memory, A Zen lock part for outputting in synchronization;
A scaling unit for receiving the first image data from the genlock unit to generate the second image data, storing the second image data in the second memory, and loading the second image data from the second memory and outputting the second image data; And
And a video output MUX for receiving the first video data and the second video data from the genlock unit and the scaling unit and providing the first video data and the second video data to the user desk according to the selection of the user desk. . A remote site that remotely monitors and controls a plurality of facilities of the local site through an optical cable by connecting the plurality of facilities through a plurality of input / and a remote site, the video signal processing system comprising:
Wherein the local site includes a plurality of transmission units connected to each of the facilities and converting an image of a connected equipment and control data related to the input and output device into an optical signal and transmitting the optical signal,
The remote site comprises:
A plurality of user desks each including an input / output device;
A plurality of receivers for receiving an optical signal from each of the plurality of transmission units through an optical cable and converting the optical signal into a standard signal compatible with an input / output device of the plurality of user desks;
The video signal processing system according to claim 2, comprising the video signal switching device. 4. The video signal processing system according to claim 3,
A server desk for monitoring and controlling the state of the video signal switching device;
A backup matrix unit for replacing the video signal switching apparatus when an abnormal situation occurs in the video signal switching apparatus during monitoring at the server desk;
A first matrix selector for blocking a path between the user desks and the video signal switching apparatus under the control of the server desk and switching to a path between the user desks and the backup matrix unit; And
And a second matrix selector for blocking a path between the receiving units and the video signal switching apparatus under control of the server desk and switching to a path between the receiving units and the backup matrix unit. Video signal processing system. 5. The video signal processing system according to claim 4,
A first matrix selector for selecting one of the video signal switching apparatus and the backup matrix unit to be connected to the receiving units through the second matrix selector when an abnormal situation occurs in the video signal switching apparatus and the backup matrix unit, And a direct control desk for monitoring and controlling the video signal. The video signal processing system according to claim 5,
Providing a path for controlling the video signal switching apparatus, the backup matrix unit, the transmission units, or the reception units by input / output device-related control data from the plurality of user desks or a control signal from the server desk; And a console box unit for receiving the video signal. The video signal processing system according to claim 6,
And a control line extension unit connected to the console box unit directly as a control line and extending to a control line to the video signal switching device and the backup matrix unit. The video signal processing system according to claim 7,
And local I / O units connected to each of the plurality of transmission units for directly controlling each of the plurality of transmission units.

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