KR200297895Y1 - Matrix Switcher for Digital Video Recorder by Personal Consumption Expenditure Card Format - Google Patents

Abstract

The present invention is to install a device for image selection among various control devices for closed circuit television (CCTV) in the PCI-Personal Consumption Expenditure slot. By making the card into a structure that can be used, it is usually inserted into a variety of D-Digital Video Recorders (DVR-Digital Video Recorders) that are widely used in closed circuit television systems (CCTV). By operating the system, the system price can be reduced, and the PCI card format DVR switcher (Matrix Switcher) can be used to expand the monitoring area that cannot be realized only by DVR. Switcher).

A feature of the present invention is a PCI card formatter matrix switcher which is mounted on a computer so as to distribute a signal in a matrix manner to a video signal of a digital video recorder (DVR). In Matrix Switcher;

A video signal connection unit for transmitting a video signal inside the V-V egg to an input circuit through a connector (apparatus for connecting an electrical signal); A video level clamp circuit used to eliminate video noise such as screen shock when selecting an image at a video signal connection unit; A video analog switcher for receiving a video signal from the video level clamp and selecting a screen by an image selection signal transmitted from a MICOM; A character subtitle generator (O.S.D. Generator) for generating related information such as time, camera number, camera position, etc. to the selected video signal as an electrical signal on the video signal; An image output unit which outputs an image by connecting to a general image device such as a monitor, a TV or a VTR; A MICOM unit configured to receive a control signal generated from the D.V. itself or a control signal generated from an external device and perform various functions according to the matrix type; Converts signals generated from RS-232 or RS-485 format and various external devices into TTL-transistor transistor logic signals to be accepted by the MICOM unit. A data converter unit performing a function of performing a function; Each card is assigned a unique number for the purpose of operating multiple DVR systems or using multiple Matrix Switcher Cards on one DVD device. A switch unit for setting a group code for operating a plurality of matrix switcher cards as an egg or an external device; The power is supplied through a PCI slot or a power expansion connector for hardware expansion, and various noises generated from self-circuited circuits or noises generated from the supplied power supply are removed. It consists of a power stabilization circuit part that prevents the transition through the power supply wiring.

According to the present invention, when the same system is constructed by using a matrix switcher in the form of a PCI-Personal Consumption Expenditure (PCI) card, There is an advantage in that it is easy to add a large number of operators in constructing a closed circuit television system using low price and D.V.al.

Description

Matrix Switcher for Digital Video Recorder by Personal Consumption Expenditure Card Format

The present invention is manufactured by carding the device for image selection among various control devices for closed circuit television (CCTV) into a PCI slot that inserts various functional boards into the computer. By inserting the card into the D-Digital Video Recorder (DVR), which is widely used in closed circuit television systems, it is possible to reduce the system price and realize only the DVR. It is a matrix switcher for DVRs in the form of PCI cards that enables unprecedented surveillance site expansion and clear analog video selection.

The Peripheral Component Interconnect (PCI) bus is a data bus standard for internal data transfer.It is a local bus standard created by major US personal computer makers, led by Intel in 1991. It is a kind of local bus called abbreviation, also called bus or PCI local bus. The PCI bus is a communication path inside the computer that connects the central processing unit and peripherals. The PCI bus is an industry standard architecture (ISA) or extended EISA (Extended), which has been the industry standard due to the high performance of the central processing unit (CPU) for the past decade. Buses such as the Industry Standard Architecture (MCA), the Micro Channel Architecture (MCA), and the recently emerging Video Electronics Standards Association (VESA) have revealed many problems. In the case of VESA bus, it is pointed out that there is a decisive weakness in the speed of graphics processing and information transfer to peripheral devices because it puts a heavy burden on the CPU which can be called as a computer. In addition, 64-bit computers, which will emerge as the flagship product of the next generation of personal computers, also raise the issue that there is no confirmed databus specification. As a result, the global computer industry has searched for a bus that can process data more efficiently, and that is the PCI bus. First of all, the concept itself is 64-bit-oriented, so it is easy to adopt in Pentium computers, and the structure of the central processing unit and the bus is operated independently so that the information processing speed is fast. In addition, the PCI bus is more compatible with the VESA bus than the VESA bus, and the slot size is small. The PCI bus can be equipped with three or four PCI slots separate from the ISA and EISA expansion slots. Video cards and SCSI (SCSI) expansion boards that require high-speed data transfer capability can be inserted into PCI slots. Since the PCI bus has a bridge circuit between the CPU and the bus, it does not depend on the type of CPU like the VL (VESA LOCAL) bus, so it can be connected to any CPU as long as it has a corresponding bridge circuit. . In addition, since the PCI bus time-division multiplexes the signals carrying the address and the signals carrying the data to one signal line, the number of signal lines in the bus may be small and the size of the expansion slot may be small. Another feature of the PCI bus is its support for bus mastering, which allows PCI expansion cards or boards to process tasks independently of the CPU. This is to enable high-speed transfer of multimedia data such as moving pictures when a plurality of peripheral devices having different data transfer rates are connected to the bus. Currently, IBM, Compaq, and TI participate in the PCI bus camp to overwhelm the VESA bus market.

A matrix switcher is a method of forming a signal line in a row 401 and a column 402, and then inputting a video signal to a row (or a column) and outputting a video signal to a column (or a row). After configuring the analog switch circuit at each Cross Point (403) and then operating the external device using manual operation or separate MICOM, it is a system device that can output the desired image. Irrespective of the order, the video signals of the input CCTV cameras 301_a and 301_b can be output to the monitors 302_a, 302_b and 305 desired according to the preference of the system administrator, and the matrix system can be expanded according to the installation scale of the CCTV cameras. It can be reduced and configured. This matrix system is not only designed as a switcher concept, but also used as a comprehensive security system composed of very complex components. In terms of the characteristics of the system, each device is used for communication. With built-in ports, even if the components are distributed separately, one control device can be controlled in one place. It is advantageous for the installation of multiple cameras, multiple monitors, pan / tilts, and various sensors in combination. The components vary in their names and functions, and the configurations vary greatly.

DVR (Digital Video Recoding) is the video signal (analog signal) input from CCTV, captured by video capture board, and converted to high quality digital signal on computer hard disk. It is a high resolution recording system that can decompress and decompress video by JPEG (Joint Photographic Coding Experts Group), MPEG (Moving Picture Experts Group), etc. In addition to recording, various selection menu functions such as motion detection function, connection recording with sensor, auto pan / tilt / zoom / control, image enlargement and editing functions It has a function of semi-permanently archiving data to a mass storage device (HDD), a digital storage device. In addition, it is a device that records the CCTV screen to the hard disk of a computer, and has the advantage of easy to manage without deterioration of picture quality due to repeated use. In addition, more than 10 closed circuit cameras can be controlled by one system, and recording and retrieval functions that users can instantly search from a remote location, and monitoring functions that divide and monitor multiple camera images on one monitor, It can be summarized as a multifunctional video digital recording and surveillance system equipment developed to accommodate video transmission function to monitor recording search and real-time screen over telephone line, LAN, leased line and internet even in remote area. It is a high-tech surveillance equipment that can replace analog CCTV. Currently, D.V.R is a state-of-the-art security system that provides effective crime prevention and improved security systems. In general, it combines a board type DVR with a general PC and a video recording DVR board, and is based on a PC-type DVR and a separate main board that are made of a PC and a board to solve the stability problem of board-style DVR. In the form of an independent DVR system, a settop box type DVR, also called a stand alone product, is currently being developed.

However, according to the conventional D.V.R 303_a, the following problems occur. Existing DVR could expand another surveillance place by using various communication media in long distance or long distance.However, in order to expand the surveillance place at a short distance in the same area, LAN (Local Area) is the most basic communication network between computers. Network is expensive, and it costs much more than the existing analog system, and the general public who manages CCTV requires much knowledge to access the original technology of the computer, and complicated OS ( Operating System) is required, and problems such as difficulty in repairing and operating in case of failure occur. As a first alternative, DVR system and matrix system are used. By combining Matrix Switcher with one DVR, many observers other than DVR users can observe the image transmitted from DVR through general monitor. have. However, the price of the existing matrix distributor is similar to or higher than that of D.V.R, and there is no business feasibility for remote control of D.V.R due to inconvenient maintenance.

Therefore, in order to solve these problems, the present invention introduces analog signal processing technology using the concept of matrix for DVR, and introduces PCI type card format that can be installed in PCI slot, thereby providing low cost and simple cable installation. It is an object of the present invention to provide a matrix switcher for a DVR of a PCI card type in which a user interface with which a plurality of monitors 305 are installed in a single DVR can be expanded and operated.

1 is a schematic block diagram of a D.V.R matrix switcher of a PCI card type according to the present invention;

FIG. 2 is a state diagram in which a D.V.R matrix switcher of the PCI card type shown in FIG. 1 is mounted on a computer and used.

Figure 3 illustrates the difference between before and after (top of drawing: 301_a, 302_a) and after using (DVR) Matrix Switcher in PCI card format for DVR system. The drawing is for

4 is a schematic diagram of a matrix switcher.

<Description of the reference numerals for the main parts of the drawings>

100: video selection unit

101: input terminal

102: data converter

103: MICOM Division

104: switch unit for setting a group card

105: stabilization circuit

106: video signal connection

107: Video Level Clamp

108: Video Analog Switch

109: character subtitle generator

110: Buffer

111: video output unit

112: character generation signal part

113: video selection signal unit

201: PCI slot

202: Digital Video Recorder Motherboard

301_a, 301_b: closed circuit television camera

302_a, 302_b: monitor for digital video recorder

303_a, 303_b: Digital Video Recorder

304: P.C.I-Personal Consumption Expenditure (D.V.R) Matrix Switcher

305: general monitor

401: row

402: heat

403: cross point

The configuration of the present invention for achieving the above object is a matrix switcher (D.V.R) of the PCI card type mounted on the computer to be able to distribute the signal in a matrix manner for the video signal of D.V.R (Matrix Switcher);

It consists of a video signal connection unit 106, a video level clamp circuit 107, a video analog switcher 108 unit, a character subtitle generator unit 109, a buffer 110 and an image output unit 111 to transmit an image signal. And the image selection unit 100;

A microcomputer 103 for receiving various control signals generated by the D.V.R itself or control signals generated by an external device and performing various functions according to the matrix type;

A data converter 102 for converting a data signal generated from the D.V.R and an external device into a signal that can be accepted by the microcomputer unit;

A switcher unit 104 for setting a group card for assigning a unique number to each card and operating a plurality of matrix switcher cards as one D.V.R or an external device;

Power is supplied through the PCI slot 201 or the hardware expansion power connector, and various noises generated from the supplied power are removed or noise that may be generated from its own circuit is connected to other cards or devices in the DVR. It is composed of a stabilization circuit 105 to prevent the transition through.

Looking at the configuration of the image selection unit 101, the wiring of the video signal in the existing DVR is used as an input circuit by using a connector (device for connecting an electrical signal), and also in the analog switch An image input unit which adds a signal clamp circuit to the input circuit to eliminate video noise such as screen shock when selected;

The RS-232 or RS-485 signal generated from the DVR or an external control device is connected to the microcomputer 103 through the input terminal 101 and the data converter 102, and the video analogue is a dedicated program mounted in the microcomputer. An image selector which controls the switcher 108 and outputs an image selection signal to select an image;

A character subtitle generator (O.S.D.Generator) 109 which generates related information such as time, camera number, camera position, etc. as an electric signal on the video signal to the selected video signal;

An image output unit 111 that outputs an image by connecting a Buffer 110 that has a built-in driver of 75 ohms and buffers and amplifies a signal, and a general image device 302_a, 302_b, 305 such as a monitor, a TV, and a VTR. It consists of.

The microcomputer 103 receives a control signal generated from the D.V.R itself or a control signal generated from an external device, generates an image selection signal 113 and a character generation signal 112 according to a command, and performs various functions.

The data converter 102 performs a function of converting a signal generated from D.V.R and various external devices in RS-232 or RS-485 format into a TTL signal to be accepted by the microcomputer 103.

The group code setting switch 104 assigns a unique number to each card for the purpose of operating a plurality of DVR systems or using a plurality of matrix switch cards in a single DVR device, and then assigning a number to a single DVR or an external device. It operates two matrix switch cards.

The power stabilization circuit unit 105 is supplied with power through the PCI slot 201 or a hardware expansion power connector, and removes various noises induced from the supplied power or generates noise from the internal circuit of the DVR. Do not transfer over other power supply wiring to other cards or devices.

When the present invention is used in CCVT system, it is easy to use D.V.R exclusively for computer system, and CCTV monitoring can be effectively performed with only a simple device, and repair can be replaced by simple replacement in case of failure.

The basic concept of the matrix used in the present invention is shown in [Fig. 4]. After the flow of signal lines is configured in a row and column manner, the input of image signals is input to rows (or columns) 401 and 402, and columns (or rows) ( 401 and 402 enable video signal output, and configure analog switch circuits at each cross point 403, and then allow manual operation or operation by an external device using a separate microcomputer. The user can output the desired image. Therefore, a large number of users can output the video signal of the input CCTV camera to the monitor of their choice according to the preference of the system administrator regardless of the predetermined order, and can expand and reduce the matrix system according to the installation size of the CCTV camera. It became.

In addition, in the present invention, the matrix switcher for DVR of the PCI card type can be mounted in the PCI card slot of the DVR device based on the computer to expand (operate) the surveillance place with low cost and simple cable installation. Compared to a computer system, it is simple to use and simple to monitor CCTV effectively.In case of a failure, it can be repaired simply by replacing the PCI switch type matrix switcher. By reducing the time, the occurrence of surveillance LOSS of CCTV can be reduced.

Claims (6)

A matrix switcher for a D.V.R of a PCI card type mounted on a computer to distribute signals in a matrix manner to a plurality of video signals input to the D.V.R; An image selector configured to transmit a video signal, comprising a video signal connection unit, a video level clamp circuit, a video analog switch unit, a character subtitle generator (O.S.D. Generator), and an image output unit; A microcomputer unit which receives various control signals generated by the D.V.R itself or control signals generated by an external device and performs various functions according to the matrix type; A data converter for converting a data signal generated from the D.V.R and an external device into a signal that can be accepted by the microcomputer unit; A group code setting switch unit which assigns a unique number to each card to operate a plurality of matrix switcher cards as one D.V.R or an external device; Power is supplied through PCI slot or hardware expansion power connector, and various noises generated from the supplied power are removed or noise generated from its own circuit can be connected to other cards or devices in DVR through power wiring. Matrix switcher for PCI card type DVR including a stabilization circuit to prevent the transition The method of claim 1, wherein the image selector, A video signal connecting portion for transmitting a video signal inside the D.V.R to an input circuit through a connector (apparatus for connecting electrical signals); A video level clamp circuit used to eliminate video noise such as screen shock when selecting an image in the video signal connection unit; A video analog switch unit which receives a video signal from the video level clamp circuit and selects a screen based on a video selection signal transmitted from a marker; A character subtitle generator (O.S.D. Generator) for generating related information such as time, camera number, camera position, etc. to the selected video signal as an electrical signal on the video signal; Matrix switcher for D.V.R in PCI card format that includes video output section for connecting to general video equipment such as monitor, TV, VTR etc. The matrix switcher of claim 1, wherein the microcomputer receives a control signal generated from a DVR and a control signal generated from an external device and performs various functions using commands according to a matrix format. Switcher) The method of claim 1, wherein the data converter unit of the PCI card format that performs the function of converting the signals generated from the DVR and RS-232 or RS-485 format of various external devices to the TTL signal to be accepted by the microcomputer Matrix Switcher for DVR The method of claim 1, wherein the group code setting switch assigns a unique number to each card for the purpose of operating multiple DVR systems or using multiple matrix switch cards for one DVR device. Matrix Switcher for DVRs in PCI card format that operates multiple matrix switch cards The DVR of claim 1, wherein the power stabilization circuit unit receives power through a PCI slot or a hardware expansion power connector, removes various noises induced from the supplied power, or generates noise generated in an internal circuit of the DVR. Matrix Switcher for DVRs in PCI card format that prevents power transfer to other cards or devices