KR20090069491A - The observation camera system in which the binary cdma modem is built in - Google Patents

Abstract

An observation camera system wherein the binary CDMA modem is built in is provided to stabilize high transmission rate without additional special wiring for the reception of a voice and a video signal by transmitting the voice signal and the video signal from a microphone and a camera based on the ISM(Industrial Scientific Medical) wireless band of 2.4 GHz. A camera device(100) modulates a video signal of a photographed surrounding environment based on a binary CDMA scheme. A signal receiver(200) converts the video signal outputted from a camera device into a binary analog signal, and outputs the binary analog signal a video signal recording & regenerating device(500). A camera device driving device(300) rotates the current position of the camera device in the left or right direction according to a camera driving control signal.

Description

The surveillance camera system in which the binary CDMA modem is built in}

The present invention relates to a security surveillance camera system incorporating a binary CDMA modem.

More specifically, a binary CDMA modem is mounted on a camera device used for security surveillance and a signal receiving device that receives an output signal of the camera device, and the video and audio signals captured by the camera device use the 2.4 GHz ISM wireless band. A security surveillance camera system with a built-in binary CDMA modem for transmission.

In general, CCTV cameras have the trouble of installing cameras in vulnerable areas or crowded places for security surveillance and installing a monitor or digital video recorder (DVR) by cable.

Therefore, when installing a plurality of surveillance cameras using the CCTV (CCTV) has a problem that a large installation cost, there is also a problem that each separately requires a control signal transmission cable for controlling the surveillance camera.

Therefore, in the case of the above-mentioned CTV (CCTV), since the wiring for the video signal, the control signal and the power supply all have to be, there is a problem that it takes a lot of time to install as well as cost.

In addition, due to many wiring, there is a problem that damage the scenery of the facility and a transmission failure due to a short circuit or poor connection of the wiring occurs.

In addition, the conventional CCTV cameras that require wiring cannot be moved easily once installed, so they can be flexibly adapted to the installation location or additional installation of the surveillance camera according to the environment or change of requirements such as changing the access path. There is a problem that can not be replaced.

In addition, there are analog wireless surveillance cameras to compensate for the shortcomings of the wired surveillance cameras. However, the interference of signals with other nearby surveillance cameras causes crosstalk, which is more dangerous. Therefore, there is a problem that the use of wireless LAN equipment and the like is restricted.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to mount a binary CDMA modem on a camera device used for security monitoring and a signal receiving device receiving the output signal of the camera device. A binary CDMA modem for transmitting video and audio signals captured by a camera device using a 2.4 GHz ISM wireless band of binary CDMA is integrated into a surveillance camera.

In addition, another object of the present invention is to mount a binary CDMA modem in the camera device to simultaneously send out signals output from a plurality of cameras converted to digital signals that can maintain stability and independence from various noises or signals from other devices. To provide a security surveillance camera system with a built-in binary CDMA modem.

In addition, another object of the present invention is to send a surveillance camera image by the wireless wireless CDMA system, the installation is particularly simple and can obtain a clear image without noise even a plurality of camera images, driving the top, bottom, left and right of the surveillance camera To provide a security surveillance camera system with a built-in binary CDMA modem that can also control a motor.

One embodiment of the present invention for achieving the above object is a camera device fixed to a predetermined place to shoot the surrounding environment and outputs a video signal, and the video signal output from the camera device to the output device or video signal recording and playback In a surrounding environment monitoring system comprising a signal receiving device for outputting to a device and a camera device driving device for changing a current position of the camera device, the camera device is configured as a whole according to a previously stored monitoring program. A first control unit for controlling an element, a video signal output unit for photographing a surrounding environment under the control of the first control unit, converting a photographing signal into an analog video signal, and converting the analog video signal into a digital video signal and outputting the converted video signal; Under the control of the first control unit, an audio signal is received and converted into a digital signal and outputted. Is an audio signal output unit, an encoder for encoding and compressing the video signal and the audio signal under the control of the controller, and a first binary for binarizing and modulating the signal compressed by the encoder into a time division multiple access signal waveform. And a signal conversion unit and an RF transmission module for amplifying and transmitting a signal modulated under the control of the first control unit, wherein the signal reception device controls all components of the camera device according to a previously stored monitoring program. A second control unit, an RF receiving module for receiving and processing a modulated signal transmitted through an RF transmission module of the camera apparatus under control of the second control unit, and demodulating the signal received by the RF receiving module And a signal demodulated by the second binary signal converter under the control of the second binary signal converter and the second controller. And in that the expensive decoder, and a video amplifying unit for amplifying the output of the video signal decoded by the decoder, amplifying the audio signal decoded by the decoder, characterized in that constituted by the audio amplifier to output.

The signal receiving apparatus according to the present invention further includes a key switch for outputting a camera device operation signal according to a user's operation, wherein the second controller is configured to output the camera device operation signal by a second binary signal conversion unit. The control unit is modulated and sent to the camera device, and the first control unit of the camera device receives a camera device operation signal modulated by the second binary signal converter and demodulates the signal by the first binary signal converter. Characterized in that the output to the camera device driving device.

The camera device is characterized in that the modulated signal is transmitted using the 2.4 GHz ISM radio band.

Accordingly, the present invention allows the audio and video signals from the microphone and the camera to be transmitted using the 2.4 GHz ISM wireless band, thereby simplifying and stably without a separate wiring connection for receiving the audio and video signals from the signal receiver. This has the effect of providing a high data rate.

In addition, the present invention has the effect of being integrated with the security surveillance camera system by embedding the binary CDMA in the security surveillance camera system, it is possible to obtain the convenience of installation and cost reduction.

The present invention also incorporates a wireless CDMA as well as a binary CDMA modulation and demodulation modem in a security surveillance camera to binarize the change in the size of analog signals having various level values generated by voice and video signals from microphones and cameras, and binary CDMA. The signal processing is simplified by transmitting the modulated binary coded signal as the signal waveform of TDMA, which simplifies the signal processing process and eliminates the need for a linear amplifier. It has the effect of being smaller.

Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.

1 is a schematic diagram for explaining a configuration of a security surveillance camera system incorporating a binary CDMA modem according to the present invention.

FIG. 2 is a block diagram illustrating the configuration of a camera system incorporating means for performing a wireless modem communication function by binary CDMA modulation and demodulation applied to FIG.

FIG. 3 is a block diagram illustrating a configuration of a signal receiving apparatus incorporating means for performing a wireless modem communication function by binary CDMA modulation and demodulation applied to FIG. 1.

Security surveillance camera system with a built-in binary CDMA modem according to the present invention, as shown in the accompanying drawings, as shown in Figure 1, fixedly installed in a predetermined place to take a picture of the surrounding environment to convert the video signal into a digital signal and then encode, A camera device 100 for demodulating and outputting a binary CDMA method and demodulating and outputting a camera driving control signal modulated in a binary CDMA method input from a signal receiving apparatus 200 to be described later, and outputting from the camera device 100 The signal receiver 200, the up-and-down driver 310, and the demodulated video signal, which are demodulated by a binary CDMA method, are decoded, converted into analog signals, and then output to the output device 400 or the video signal recording / reproducing apparatus 500. It is composed of a left and right drive unit 320, the current of the camera device 100 in response to the camera drive control signal input from the signal receiving device 200 Value achieved by the camera unit driving device 300 is rotated to change to the top and bottom or left and right.

As shown in FIG. 2, the camera device 100 includes a first control unit 110 for controlling all components of the camera device according to a pre-stored monitoring program, and the first control unit 110 of the first control unit 110. The video signal output unit 120 and the first control unit 110 control the first control unit 110 to photograph the surrounding environment under the control, convert the photographed signal into an analog video signal, and convert the analog video signal into a digital video signal. An audio signal output unit 130 for receiving an audio signal, converting the digital signal into a digital signal, and outputting the encoded audio signal; an encoder 140 encoding and compressing the video signal and the audio signal under control of the first controller 110; And a first binary signal converter 150 for binarizing the signal compressed by the encoder 140 and modulating the signal compressed by a time division multiple access signal waveform, and an RF amplifier 161 and an RF transceiver 162. The RF transmission module 160 amplifies the modulated signal under the control of the first control unit 110, converts the signal into an RF band signal, and outputs the signal. The power supply unit 170 supplies driving power to each of the building blocks. It consists of.

The camera device 100 transmits a modulated signal using the ISM radio band of 2.4 GHz.

The image signal output unit 120 may include an image sensor 121 photographing a subject, a sensor driver 122 driving the image sensor 121 to photograph a subject, and the image sensor 121. A data converter 123 for converting the photographed subject into an electrical video signal, an image output unit 124 for outputting an analog video signal from the video signal output from the data converter 123, and the analog And a digital converter 125 for converting a video signal into a digital video signal.

The audio signal output unit 130 includes a microphone 131 for converting an input external sound into an analog audio signal, an audio amplifier 132 for amplifying an analog audio signal output through the microphone 131, and The digital converter 133 converts the amplified analog audio signal into a digital audio signal.

The first binary signal converter 150 controls the entire block of the first binary signal converter 150 to modulate the video signal and the audio signal encoded by the encoder 140, and Under the control of the controller 151, a bus interface 152 for outputting the encoded video and audio signals, and a memory 153 for storing the encoded video and audio signals output through the bus interface 152 And a binary CDMA demodulation unit 154 that receives and binarizes the encoded video signal and the audio signal stored in the memory 153 under the control of the controller 151, and modulates them into a time division multiple access signal waveform. The control unit 151 includes a PLL / clock unit 155 for controlling the first binary signal conversion unit 150 at a predetermined timing.

In addition, the signal receiving apparatus 200 includes a second control unit 210 for controlling all components of the camera apparatus according to a pre-stored monitoring program as shown in FIG. 3, and the second control unit 210. According to the control of the RF receiving module 220 for receiving and processing the modulated signal transmitted through the RF transmitting module 160 of the camera device 100, and the signal received by the RF receiving module 220 A second binary signal converter 230 to demodulate, a decoder 240 for decoding a signal demodulated by the second binary signal converter 230 under the control of the second controller 210, and the decoder A video amplifier 250 for amplifying and outputting the video signal decoded by the 240; an audio amplifier 260 for amplifying and outputting the audio signal decoded by the decoder 240; Keys to output camera device operation signal Location 270.

Since the configuration of the second binary signal converter 230 embedded in the signal receiver 200 is the same as that of the first binary signal converter 150 embedded in the camera apparatus 100, a detailed description thereof will be omitted. Let's do it.

The second control unit 210 controls the camera device operation signal to be modulated by the second binary signal conversion unit 230 and sent to the camera device 100, and the first control unit of the camera device 100 ( The 110 receives a camera device operation signal modulated by the second binary signal converter 230 and demodulates the signal by the first binary signal converter 150 to output to the camera device driver 300. .

The operation of the security surveillance camera system incorporating the binary CDMA modem configured as described above is as follows.

First, an image signal output including an image sensor 121, a sensor driver 122, a data converter 123, an image outputter 124, and a digital converter 125 under the control of the first controller 110. The audio signal output unit 130 including the microphone 131, the audio amplifier 132, and the digital converter 133 may be input by photographing a surrounding environment of a place where the camera apparatus 100 is installed through the unit 120. The audio signal is input through the encoder 140 and encoded by the encoder 140, and then output to the first binary signal converter 150.

Then, the first binary signal converter 150 binarizes the encoded video and audio signals, converts the binarized signal into a shape such as a time division multiple access (TDMA) signal waveform, and outputs the same to the RF transceiver module 160.

The RF transmission / reception module 160 amplifies the video and audio signals modulated by the binary CDMA scheme so that they can be transmitted using an ISM wireless band of 2.4 GHz and transmits them through an antenna.

As described above, a video and audio signal modulated by a binary CDMA method and converted into an ISM wireless band of 2.4 GHz and transmitted through an antenna is received through an antenna of the signal receiving apparatus 200, and the received video and audio signal are RF transmitted and received. The module 220 is output to the second binary signal converter 230.

Then, the second binary signal converter 230 demodulates the received video and audio signals into the original signal, and the demodulated signal is output to the decoder 240, and the decoder 240 reconstructs the encoded video and audio signals. Decoding is performed to convert the original analog video signal and audio signal.

The analog video signal and the audio signal converted as described above are amplified by the audio amplifier 250 and the video amplifier 260, and then output devices such as a monitor through the audio output terminal 280 and the video output terminal 290. It is output to the recording and reproducing apparatus 500 such as 400 or DVR so as to be output in real time or recorded on a recording medium such as a hard disk.

Finally, the user may change the current position of the camera apparatus 100 through the key switch 270 provided in the signal receiving apparatus 200. That is, the user inputs up, down, left and right position change signals through the key switch 270 provided in the signal receiving apparatus 200.

When the up, down, left, and right position change signals input by the user are amplified by the RF amplifier 221 according to the control of the second controller 210 and transmitted through the RF transceiver 222, the camera apparatus. The RF transceiver 162 of the RF transceiver module 160 of 100 receives the up, down, left, and right position change signals and amplifies them through the RF amplification unit 161, followed by a first binary signal conversion unit ( 150).

Then, the first binary signal converter 150 demodulates the input up, down, left, and right position change signals and outputs the inputs to the camera device driving apparatus 300 through the first control unit 110, and the camera. The device driving device 300 rotates the current position of the camera device 100 up, down, left, and right in response to the input up, down, left, and right position change signals.

The above-described embodiment is limited to the security surveillance camera, but this embodiment may be applied to other embodiments such as a monitor and a DVR (recording and playback device).

As described above, the preferred embodiment according to the present invention has been described, but the present invention is not limited to the above-described embodiment, and the present invention is not limited to the scope of the present invention as claimed in the following claims. Anyone with knowledge of the present invention will have the technical spirit of the present invention to the extent that various modifications can be made.

1 is a schematic diagram for explaining a configuration of a security surveillance camera system incorporating a binary CDMA modem according to the present invention.

FIG. 2 is a block diagram for explaining a configuration of a camera apparatus incorporating means for performing a wireless modem communication function by binary CDMA modulation and demodulation applied to FIG.

FIG. 3 is a block diagram illustrating a configuration of a signal receiving apparatus incorporating means for performing a wireless modem communication function by binary CDMA modulation and demodulation applied to FIG. 1.

** Description of the symbols for the main parts of the drawings **

100: camera device

200: camera device driving device

300: signal receiving device

400: output device

500: recording and playback device

Claims (3)

A camera device fixedly installed at a predetermined place and outputting a video signal by capturing a surrounding environment, a signal receiving device for outputting a video signal output from the camera device to an output device or a video signal recording / reproducing device, and the current of the camera device In the security surveillance camera system comprising a camera device driving device for changing the position, The camera device, A first control unit for controlling all components of the camera apparatus according to a pre-stored monitoring program, and photographing the surrounding environment under the control of the first control unit, converting the photographed signal into an analog video signal, and converting the analog video signal A video signal output unit for converting and outputting a digital video signal, an audio signal output unit for receiving an audio signal and converting the digital signal into a digital signal and outputting the digital signal under the control of the first controller; An encoder that encodes and compresses an audio signal, a first binary signal converter that binarizes the signal compressed by the encoder, modulates the signal into a time division multiple access signal waveform, and outputs the modulated signal under control of the first controller; It consists of an RF transmission module that amplifies and transmits. The signal receiver, A second controller for controlling all components of the camera apparatus according to a pre-stored monitoring program, and an RF for receiving and processing a modulated signal transmitted through an RF transmission module of the camera apparatus under the control of the second controller A receiving module, a second binary signal converting unit for demodulating a signal received by the RF receiving module, a decoder for decoding a signal demodulated by the second binary signal converting unit under control of the second control unit; And a video amplifier for amplifying and outputting the video signal decoded by the decoder, and an audio amplifier for amplifying and outputting the audio signal decoded by the decoder. The method of claim 1, wherein the signal receiving apparatus, It further includes a key switch for outputting a camera device operation signal according to the user's operation, The second controller controls the camera device operation signal to be modulated by a second binary signal converter and sent to the camera device. The first control unit of the camera device, receiving the camera device operation signal modulated by the second binary signal conversion unit is demodulated by the first binary signal conversion unit to be output to the camera device driving apparatus. Security surveillance camera system The method of claim 1, wherein the camera device, Security surveillance camera system characterized in that the modulated signal is transmitted using the 2.4GHz ISM radio band.

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