KR100307599B1 - Apparatus for automatically controlling of recording units - Google Patents

Abstract

The present invention relates to an automatic recording apparatus for an image recording apparatus, comprising: an input unit including a digital input unit and an analog input unit; an A / D converter for converting an analog signal output through the analog input unit into a digital signal; and an input for outputting an output control signal. A central control unit which converts the output control signals of the input control unit into a plurality of control signals and controls to transmit the data stored in the transmission buffer unit to the reception buffer unit by the signal transmission unit; And an output control unit for reading data stored in the reception buffer unit and controlling the plurality of video recorders through the interface unit. Therefore, it is possible to operate the video recorder without a separate repeater for short distance and long distance communication, thereby reducing the burden on hardware, preventing distortion of the output control signal, and shortening the execution time of the control signal.

Description

Video Recorder Automatic Control Unit {APPARATUS FOR AUTOMATICALLY CONTROLLING OF RECORDING UNITS}

The present invention relates to a video recorder automatic control device, and more particularly, to a video recorder of a near and a long distance by using an analog control signal for controlling a video recorder in a short distance and a digital control signal for controlling a video recorder in a remote location. It relates to a video recorder automatic control device.

In general, the security system refers to facilities and equipment for protection from various disasters, accidents and crimes, ranging from the expenses of major national facilities to public institutions, financial institutions, general workplaces, houses, etc. Types of security systems include unmanned machine guards, home security, unattended bank guards, closed circuit television (CCTV) systems, product theft prevention systems, and access control systems.

Unmanned machine guard is a system that detects accidents caused by sensors and sends them to the accident site by the signal sent to the security service provider's situation room. Banks, government offices, schools, department stores, shopping centers, supermarkets, private houses, offices, factories, Used in multi-family homes, warehouses, buildings, and electronic distributors. Home Security is a system that detects theft, gas leaks, fires, etc. and sends emergency signals to wireless transmitters to prepare for accidents that are likely to occur to children and the elderly. Unmanned bank guard is a system that is programmed and operated automatically by computer such as lighting control, announcement broadcasting, various error detection, door opening and closing of financial institutions such as 365 corner of bank, and can be remotely controlled in the situation room. The CCTV system is a system that prevents or tracks an accident by monitoring and recording the behavior of a person in a situation where it is not controlled by general security equipment such as a large workplace with a lot of public access. Commodity theft prevention system is a system to prevent theft and loss by attaching a sensor to each product. The access control system is a system for controlling access through an ID card, a password, or a fingerprint inputted by a system installed at a door or a parking lot entrance.

Typically, the video recorder has a function of recording an input video signal and reproducing the recorded video signal. Such a video recorder is controlled by a front control panel attached to a front panel or a remote controller for transmitting an infrared signal, and is used in various fields throughout the industry. The general remote control used in CCTV, etc. is configured to perform a function desired by the user by sending an infrared signal corresponding to the key signal when the user presses a key to operate, Figure 1 is a circuit diagram showing the configuration of a general remote control to be.

As shown in FIG. 1, the remote controller IC is connected to the remote controller IC to the crystal oscillator (X-tal) for driving the remote controller and the capacitors C1 and C2 to control the remote controller IC to output pulse waves required by the remote controller IC. Connects a light emitting diode (L1) indicating an operating state and a power input state, and the transistor (TR) and the light emitting diode (L2) for transmitting the output signal of the condenser (C3) and the remote control IC with a constant voltage in the remote control IC Connect it. In addition, the remote control IC is connected to a key matrix in which selection keys K1-K32 for generating key signals corresponding to the respective functions are organically coupled, and a custom code (C / C) and a data code (D / C). Diodes D1-D8, which allow the selectivity, are organically coupled. Here, the number and arrangement of the selection keys K1-K32 and diodes D1-D8 can be freely used by the designer.

The conventional image processing system is started by an adjacent sensor that captures the movement of the site using an infrared sensor, etc., and has a function of controlling the video recorder by analog control signals of the adjacent sensor. A block diagram showing the overall configuration of an image processing system. As shown in FIG. 2, the conventional video recorder control apparatus includes a sensor input unit 21 and an analog / digital converter (hereinafter, referred to as an A / D converter).

(22), the control unit 23, the interface unit 24 and the external device 25.

The sensor input unit 21 receives an analog signal transmitted from an adjacent sensor and transmits the signal to the A / D converter 22, and the A / D converter 22 transmits the analog signal transmitted from the sensor input unit 21. To convert to a digital signal. The controller 23 receives the digital signal converted by the A / D converter 22 to output a processable control signal, controls the overall operation of the image processing system, and the interface unit 24 controls the controller 23. Receives a control signal output from the control unit to adjust the difference and operation timing of the data representation format of the control unit 23 and the external device 25 (for example, the video recorder), and the data transmitted from the control unit 23 to the external device Act to deliver to 25.

However, the conventional video recorder controller is limited to the input signal is limited to a single sensor signal of the analog type, and the output signal is also limited to control a single video recorder, the need for a separate repeater for remote communication control have.

In addition, in the conventional video recorder control apparatus, when a plurality of video recorders are to be controlled by the same operation, a corresponding control signal must be input to each video recorder, resulting in a waste of time and a malfunction due to repetitive operations. There is a problem.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to receive a number of analog and digital signals converted to a control signal to control a plurality of video recorders and separate during short-range and long-distance communication The present invention provides an automatic video recorder controller capable of controlling a plurality of video recorders with an output signal without a repeater.

Another object of the present invention is a start code indicating the start of a control signal for controlling a plurality of video recorders simultaneously, an ID code for identifying a plurality of video recorders, a data code for instructing operations of the plurality of video recorders, and error detection. A video recorder automatic control device capable of controlling a plurality of video recorders using packet data including a parity code and an end code indicating an end of a control signal.

Another object of the present invention is to control the plurality of video recorders at the same time by using the packet data to eliminate the inconvenience of inputting the corresponding control signal to each video recorder, and save unnecessary time caused by it, It is to provide an automatic video recording controller that can reduce the malfunction caused by.

The video recorder automatic control device having such a configuration can obtain an effect of automatically controlling the plurality of video recorders through a process of converting an input signal into a plurality of control signals.

1 is a circuit diagram showing the configuration of a typical remote control.

Figure 2 is a block diagram showing the overall configuration of a conventional image processing system.

Figure 3 is a block diagram showing the configuration of a video recorder automatic control apparatus according to an embodiment of the present invention.

4 is a block diagram of packet data according to the present invention;

FIG. 5 is a detailed block diagram of the input controller of FIG. 3. FIG.

♣ Explanation of symbols for the main parts of the drawing ♣

31: input unit 32: A / D conversion unit

33,50: input control unit 34: signal decoding unit

35: transmission buffer section 36: central control section

37: signal transmission unit 38: output control unit

39: reception buffer unit 40: interface unit

The present invention for achieving the above object is a video recorder control device for controlling the video recorder with an output control signal by an analog signal, using a digital input unit and an open collector signal using the packet data as an input signal An input unit comprising an analog input unit; and an A / D conversion unit connected to the analog input unit and converting an analog signal output through the analog input unit into a digital signal; and a digital input unit connected to the input unit and the A / D conversion unit. An input controller which receives a signal transmitted from the A / D converter, decodes the signal received by the signal decoder, temporarily stores the decoded data in the transmission buffer unit, and outputs an output control signal; and an input controller Connected to the transmit buffer and connected to the output buffer It converted to a number of control signals, and a central control unit for controlling to transmit part receiving buffer by the data stored in the transmission buffer part on the signal transmission unit; And an output control unit connected to the signal transmission unit and interconnected with the reception buffer unit, and configured to read data stored in the reception buffer unit to control the plurality of video recorders through the interface unit.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the automatic video recording apparatus automatic control device according to the present invention will be described.

3 is a block diagram showing the configuration of an automatic video recorder control apparatus according to an embodiment of the present invention. As shown in FIG. 3, the input unit 31 receives a digital input unit 31a and an open collector signal for receiving packet data and inputting the packet data into a digital signal having a binary value. It consists of an analog input unit 31b for inputting an analog signal having a continuous value. Here, the digital signal output from the digital input unit 31a is controlled by a communication protocol to be described later, and the analog signal output from the analog input unit 31b uses a GND control signal, a relay control signal, and an OPEN control signal as input signals. do. The configuration of the packet data received by the digital input unit 31a is as follows, and a detailed description of the detailed configuration and operation will be described later.

STX ID COMMAND CODE ETX 0X02 1 byte 1 byte 0X03

The digital input unit 31a is directly connected to the input control unit 33 to transmit a digital signal, and the analog input unit 31b is connected to the A / D conversion unit 32 and then connected to the input control unit 33 to receive an analog signal. It converts it into a processable digital signal and transmits it. In general, since the signal processed in the IC circuit is a digital signal, the analog signal output from the analog input unit 31b must be converted into a digital signal. The A / D converter 32 performs this function. Since the analog signal that changes continuously with time has a signal from the lowest level to the highest level, the digital signal has a binary value corresponding to the number of bits. When the analog signal is converted into a digital signal by the A / D converter 32, an error occurs accordingly. In order to eliminate this error, the A / D converter 32 compares the level of the input analog signal with a previously made level and outputs the value as a digital signal.

The input control unit 33 is connected to the digital input unit 31a and the A / D conversion unit 32, and is connected to the signal decoding unit 34, and the digital input unit 31a and the A / D conversion unit 32 Receives the data input from the and transmits the packet data and the converted digital data to the signal decoder 34. Details of the configuration and operation of the input control unit 33 will be described later. The signal decoding unit 34 is interconnected with the input control unit 33 and connected to the transmission buffer unit 35, and transmits the decoded data by decoding the packet data transmitted from the input control unit 33 and the converted digital data. It transfers to the buffer part 35.

The central control unit 36 is interconnected to the transmission buffer unit 35 and the signal transmission unit 37, performs a function corresponding to the control signal output from the input control unit 33, and smoothly transmits the decrypted data. To control. The transmission buffer unit 35 is connected to the signal decoding unit 34 and interconnected to the central control unit 36, and has a continuous ring structure for temporarily storing a plurality of data transmitted from the signal decoding unit 34. consist of. The signal transmission unit 37 is connected to the central control unit 36 and is connected to the output control unit 38 and the reception buffer unit 39. The transmission buffer unit 35 is transmitted by the transmission request signal of the central control unit 36. The data stored in the data is transmitted to the reception buffer unit 39 using a FIFO (First In First Out) method.

The output control unit 38 is connected to the signal transmission unit 37 and is mutually connected to the reception buffer unit 39 and the interface unit 40, and is received by the transmission completion signal applied from the signal transmission unit 37. The data stored in 39 is read and transmitted to the interface 40 using the FIFO method. The reception buffer unit 39 is connected to the signal transmission unit 37 and is interconnected to the output control unit 38, and has a series of closely fixed sets for temporarily storing a plurality of data transmitted to the signal transmission unit 37. It consists of a buffer ring structure consisting of a series of contiguous fixed length byte buffers.

The interface unit 40 is connected to the output controller 38 and connected to the plurality of video recorders. The interface unit 40 adjusts the operation timing and the difference in data representation format between the output control unit 38 and the plurality of video recorders. The data transmitted at 38 is transferred to the plurality of video recording units, and are collectively or selectively controlled in accordance with the drive control signal of the input unit 31. Since the output control unit 38 and the video recorder are generally configured to have different operating speeds, the transmitting side and the receiving side must be performed while checking the state of each other when sending and receiving data. Therefore, data is transmitted between the output control unit 38 and the plurality of video recorders by a handshake transmission method of confirming whether or not the video recorder can receive data. That is, the output control unit 38 transmits a strobe (STB) signal to the interface unit 40 to notify the message of "send data", and the interface unit

40 transmits an acknowledgment (ACK) signal to the output control unit 38 to indicate the message "The data has been received and the process is completed". In addition, the pin arrangement and function for connecting the interface unit 38 and the video recorder are as follows.

PIN number 1/9 2/10 3/11 times 4/12 times 5/13 6/14 7th 8th 15th function AUX Rewind Fast forward recording stop play NC NC GND

4 is a block diagram of packet data according to the present invention, and includes STX (start of text), ID (identification) code, command code, parity code, and ETX (end of text).

The STX is a start code indicating the start of a packet, the ID code is an identification code specifying an address for identifying a plurality of video recorders, the command code is a command code for operating the video recorder, and the parity code is a Code used in addition to original data for error detection during transmission, and ETX is an end code indicating the end of a packet. Here, STX uses 0X02, ID code can set ID for up to 256 (2 ⁸ ) video recorders using 1 byte, and command code can use up to 256 (2 ⁸ ) up to 1 byte. Operation function for video recorder can be set, parity code is assigned 1 bit, ETX uses 0X03. The parity code includes an even parity code and an odd parity code. The even parity code is set by adding a parity code to the original data so that the number of codes set to 1 is always even in the data to be transmitted. The code set to 1 is always set to be odd. For example, ID codes for four video recorders can be set to '00000000', '00000001', '00000010' and '00000011', respectively, and the codes for driving all video recorders can be set to '11111111'. For a command code that commands an operation for each video recorder, for example, 'rewind'is' 00000000 ',' fast forward 'is'00000001','recording'is' 00000010 ',' stop 'is' 00000011 'and' playback 'can be set to' 00000100 '. The allocation bits and code formats for each code can be freely changed by the designer.

The packet transmission method is a method of dividing data to be transmitted in packet units, and is widely used in a system for transmitting a control signal and predetermined data to each other, such as a code division multiple access (CDMA) system. A packet is obtained by dividing data to be transmitted into a predetermined length and adding data to be transmitted. Such a packet transmission method can effectively use a line because it does not need to occupy a line when transmitting data, and has an advantage of communicating with a counterpart having a different communication speed.

FIG. 5 is a detailed block diagram of the input controller 33 of FIG. 3. The operation thereof will be described in detail as follows.

As shown in FIG. 5, the input control unit 33 receives the VCR_RELAY signal through the analog input unit 31b, and designates the address of the video recorder to be controlled using the data packet. In addition, it has a communication interface for interfacing the control signal of the digital input unit 31a and the input control unit 33, and outputs an OUT_CONTROL signal.

The overall operation of the video recorder automatic control apparatus according to the present invention as described above will be described with reference to FIG. 3 as follows. It is assumed that a control signal for performing a video recording operation of all video recorders is transmitted.

First, when transmitting a control signal using packet data (that is, a digital signal), a code for performing a recording operation of all video recorders, that is, '00 11111111 00000010 0111 'is input to the digital input unit 31a. Here, '00' is STX, '11111111' is an ID code, '00000010' is a command code, '01' is a parity code, and '11' is an ETX. When the control signal is transmitted using an open collector signal (ie, an analog signal), an analog signal corresponding to 11111111 00000010 is input to the analog input unit 31b. The control signal input to the digital input unit 31a is directly transmitted to the input control unit 33, and the control signal input to the analog input unit 31b is converted into a digital signal after passing through the A / D conversion unit 32 and then input. It is sent to the control unit 33.

The packet data or digital signal (which has passed through the A / D converter 32) input to the input controller 33 is transmitted to the signal decoder 34 by the input controller 33. When the decoding start signal is applied from the input control unit 33, the signal decoding unit 34 decodes the transmitted data ('00 11111111 00000010 01 11 '). The decrypted data is temporarily stored in the transmission buffer section 35. The reason for temporarily storing the transmission buffer unit 35 is to sequentially output the FIFO method when several control signals arrive at a time. The signal decoding unit 34 applies a decoding completion signal to the input control unit 33 when all decoding of the transmitted data is completed, and the input control unit 33 sends an output control signal to the central control unit 36.

When the output control signal is applied from the input control unit 33, the central control unit 36 transmits a transmission request signal to the signal transmission unit 37. When the transmission request signal is applied, the signal transmission unit 37 outputs data temporarily stored in the transmission buffer unit 35 in a FIFO manner and transmits the data to the reception buffer unit 39. When the transmission is completed, the signal transmission unit 37 transmits a transmission completion signal to the central control unit 36 and the output control unit 38. When the transmission completion signal is applied from the signal transmission unit 37, the output control unit 38 applies the STB signal to the interface unit 40 and outputs the data temporarily stored in the reception buffer unit 39 in a FIFO manner. Transmit to 40. The interface unit 40 interfaces all the video recorders to perform a recording operation by adjusting the difference in the data representation format and the operation timing of the data transmitted from the output control unit 38, and when the data is processed, the output control unit 38. ) Sends an ACK signal and ends all operations.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the scope of application of the present invention is not limited to these, and may be appropriately changed within the scope of the same idea. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified. In addition, the present invention can be widely used in various ways.

As described above, according to the video recorder automatic control device according to the present invention, by inputting analog and digital signals into control signals that can be processed to control a plurality of video recorders, the video recorder without a separate repeater for short-range and long-distance communication By reducing the load on the hardware, preventing distortion of the output control signal, and reducing the execution time of the control signal.

In addition, by simultaneously controlling a plurality of video recorders using packet data, the inconvenience of inputting a corresponding control signal to each video recorder can be eliminated, and the unnecessary time caused by the video data can be saved. It can be effective.

In addition, according to the input signal type, the digital control signal is processed as it is, and the analog control signal is converted into a digital control signal, thereby processing, there is an effect that can process both the digital control signal and the analog control signal.

Claims (3)

In the video recorder control device for controlling the video recorder with an output control signal by an analog signal, An input unit comprising a digital input unit using packet data as an input signal and an analog input unit using an open collector signal as an input signal; An A / D converter connected to the analog input unit and converting an analog signal output through the analog input unit into a digital signal; It is connected to the input unit and the A / D converter, receives the signals transmitted from the digital input unit and the A / D converter, decodes the signal received by the signal decoder, and temporarily transmits the decoded data to the transmission buffer unit. An input control unit for controlling to store the data and outputting an output control signal; A control unit connected to the input control unit and interconnected with the transmission buffer unit to convert an output control signal of the input control unit into a plurality of control signals and to transmit data stored in the transmission buffer unit to the reception buffer unit by a signal transmitter. A central control unit; And an output control unit connected to the signal transmission unit and interconnected with the reception buffer unit, and configured to read data stored in the reception buffer unit to control a plurality of video recorders through an interface unit. Device. The method of claim 1, wherein the packet data is An STX indicating the start of a packet; An ID code specifying an address for identifying a plurality of video recorders; Command code for operating the video recorder; A parity code used in addition to original data for the purpose of error detection during data transmission; Automatic recording apparatus for a video recorder, characterized in that consisting of; ETX to inform the end of the packet. The method of claim 1, wherein the input control unit The video recorder automatic control device can process both a digital signal using packet data as an input signal and an analog signal using an open collector signal as an input signal according to an input signal type.