KR20030033749A - CCD camera using a cordless LAN - Google Patents

Abstract

PURPOSE: A CCD camera using a wireless LAN is provided to watch image information picked up by the CCD camera at a long distance by transmitting and receiving the image information with an external display system in a wireless signal through the wireless LAN. CONSTITUTION: A CCD(Charge Coupled Device) converts an imaging of a subject incident through a lens(1) into an electric signal for processing the electric signal into digital image information. A CPU controls transmission of the digital image information. An ethernet signal processing part temporarily processes the image signal into an ethernet transmitting signal. A wireless LAN part converts the image signal output from the ethernet signal processing part into a wireless LAN signal for transmitting the wireless LAN signal into an external access point part(8).

Description

CD camera using wireless LAN {CCD camera using a cordless LAN}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CCD camera using a wireless LAN, and more particularly, a CCD using a wireless LAN that includes a wireless LAN cell in a CCD camera and transmits and receives image information generated by the CCD camera to an external display system via a wireless LAN. It's about the camera.

In general, a CCD (Charge coupled device) camera converts analog image information input through a lens into an electrical signal, compresses it into digital information, and stores the compressed image data in a storage medium or by using various output terminals. Refers to an image pickup device that is sent to an application. When storing still image information, such a CCD camera is generally stored in an internal memory and an external memory. In the case of a moving picture, a large memory or a CD-R / RW and a magnetic tape are mainly used. In the CCD camera as described above, various methods are used to transmit the image information converted in real time and the image information recorded on the storage medium to an external device. For example, a high-speed USB from a serial port such as RS-232C is used. It has a terminal, an IEEE1334 terminal, and an Ethernet RJ-45 terminal connected to a network.

Then, referring to the conventional CCD camera as described above with reference to FIG. 1, the CCD unit 71 converting an image of a subject incident through the lens 70 into an electric signal and processing the digital image information into the CCD unit; A JPEG / MPEG coprocessor 72 for compressing the digital image information input from the 71 to a predetermined level, and controls the transmission of the compressed digital image information input from the JPEG / MPEG coprocessor 72 and functions of a CCD camera. To the CPU 73 for controlling the overall control, the memory unit 74 for storing image information according to the storage control signal of the CPU 73, and the external connection terminal according to the digital transmission control signal of the CPU 73. A digital signal transmission unit 76 for transmitting digital image information to the connected digital device 75, an Ethernet transmission unit 77 for transmitting image signals to the Ethernet network according to the Ethernet transmission control signal of the CPU 73, and , Analog transmission of the CPU 73 A picture image pick-up signal according to the signal comprises a video transmitting unit 78 to transmit to an analog form.

The CCD 71 converts the optical imaging signal of the subject photographed through the lens 70 into an electrical signal, and digitally captures an analog imaging signal input from the CCD 79. And an DSP processing unit 81 for digital signal processing the digital imaging signal inputted from the A / D converter 80.

In addition, the memory unit 74 may store data according to a memory controller 82 generating a memory control signal according to a storage control signal of the CPU 73 and a flash memory control signal of the memory controller 82, or Flash memory 83 for reproducing, DRAM 84 for storing or reproducing data in accordance with a RAM memory control signal of the memory controller 82, and data for storing according to a memory control signal of the memory controller 82 And a memory card 85 to play or play back.

In addition, the digital signal transmission unit 76 is an input / output controller 86 for controlling the transmission of the digital image signal according to the digital signal transmission control signal of the CPU 73, and the input / output controller 86 in series An RS-232C interface 87 for transmitting a digital image signal according to a port control signal, an infrared LCD interface 88 for transmitting a digital image signal as an infrared signal according to an infrared control signal of the input / output controller 86; And a USB interface 89 for transmitting a digital image signal according to the USB control signal of the input / output controller 86.

In addition, the video transmission unit 78 receives and outputs a digital image signal from the DSP processing unit 81 according to the video transmission control signal of the CPU 73 and the video controller 90 of the video controller 90. A video encoder 91 which encodes an image signal according to a video encoding control signal and transmits the image signal to an external device through a video terminal, and transmits the image signal to the LCD panel 92 according to the LCD control signal of the video controller 90. LCD interface 93.

In addition, the Ethernet transmitter 77 transmits an Ethernet interface 94 for interfacing the Ethernet control signal of the CPU 73 and an image signal input via the Ethernet interface 94 to a 10/100 BASE TX Ethernet MAC. Ethernet MAC unit 95 for converting the signal, and 10/100 BASE TX transceiver 96 for transmitting the Ethernet signal of the Ethernet MAC unit 95 to an external Ethernet device connected by wire.

On the other hand, referring to the operation of the conventional CCD camera as described above, when the subject is imaged on the CCD 79 of the CCD unit 71 through the lens 70, the CCD 79 converts the formed image into an electrical signal A To the / D converter 80. Then, the A / D converter 80 converts the analog image pickup signal input from the CCD 79 into a digital signal and outputs the digital signal to the DSP processing unit 81. The DSP processor 81 digitally processes the input digital image pickup signal and outputs the digital signal to the JPEG / MPEG coprocessor 72. In addition, the JPEG / MPEG coprocessor 72 compresses the image signal input from the DSP processing unit 81 and transmits the signal according to the control signal of the CPU 73. In this case, the CPU 73 is processed. When the image signal needs to be temporarily stored, it is stored in the flash memory 83 or the DRAM 84 through the memory controller 82. Here, the CPU 73 stores the image data in the memory card 85 through the memory controller 82 when it is desired to store the image data externally.

At this time, when viewing the image data currently captured by the CCD 79 in real time with the CCD camera, the CPU 73 displays the input image signal on the LCD panel 92 via the LCD interface 93. .

In this case, the CPU 73 transmits the image data input from the JPEG / MPEG coprocessor 72 to an external device, for example, when transmitting the image data to a monitor / TV (not shown). 90 to video encoder 91. Then, the video encoder 91 encodes the input image data into an analog signal and transmits the same to the corresponding monitor / TV.

In addition, the CPU 73 is connected to an external digital device 75 via a cable 97 of any one of the digital port of the CCD camera, for example, RS-232C interface 87, USB interface 89, infrared interface 88. When connected to one and needs to be transmitted, the digital image data can be transferred through the input / output controller 86 through one of the digital ports such as the RS-232C interface 87, the USB interface 89, and the infrared interface 88. Send it.

On the other hand, when the CPU 73 needs to transmit image data through Ethernet connected to an external network, the image data captured by the CCD unit 71 is transferred via the Ethernet interface 94 of the Ethernet transfer unit 77. To the Ethernet MAC unit 95. Then, the Ethernet MAC unit 95 converts the input image data into a 10/100 BASE TX Ethernet MAC signal and outputs the same to the 10/100 BASE TX transceiver 96. The 10/100 BASE TX transceiver 96 transmits the Ethernet signal of the Ethernet MAC unit 95 to an external Ethernet device connected by wire.

However, in the conventional CCD camera as described above, the cable must be connected in order to transmit the image signal to the external system. Therefore, the installation space is limited and the auxiliary relay equipment must be installed in the case of remote transmission in real time. There is a problem that the transmission cost of the signal is significantly increased.

Accordingly, the present invention has been invented to solve the above conventional problems, by providing a wireless LAN cell in a CCD camera and transmitting and receiving image information generated by the CCD camera to an external display system and a wireless signal through a wireless LAN, It is an object of the present invention to provide a CCD camera using a wireless LAN, which can greatly improve the functionality of the CCD camera, since the image information captured by the CCD camera can be viewed in real time from a distance.

Another object of the present invention can be stored in the storage space of the specific equipment by accessing the Internet through the wireless LAN image information captured by the CCD camera in real time can process a large amount of image information accordingly the information of the CCD camera It is to provide a CCD camera using a wireless LAN that can maximize the utilization.

The present invention for achieving the above object is a CCD unit for converting the image of the subject incident through the lens into an electrical signal to process the digital image information, and to control the transmission of the digital image information input from the CCD unit An Ethernet signal processor for temporarily processing and outputting an image signal as an Ethernet transmission signal according to a CPU, a wireless LAN transmission control signal of the CPU, and an external access point by converting the image signal output from the Ethernet signal processor into a WLAN signal Provided is a CCD camera using a wireless LAN including a wireless LAN unit for transmission to the unit.

1 is a block diagram illustrating a conventional CCD camera.

2 is a block diagram illustrating a CCD camera of the present invention.

3 is an explanatory diagram illustrating an embodiment of the present invention.

<Detailed Description of Codes>

1 Lens 2 CCD

3: CPU 4: camera memory

5: PTZ control unit 6: Video transmission unit

7: Ethernet signal processor 8: access point

9: wireless LAN unit 10: CCD

11: A / D converter 12: microphone

13: audio amplifier 14: codec

15: DSP processing unit 16: JPEG / MPEG coprocessor

17: Speaker 18: Audio Amplifier

19: memory controller 20: flash memory

21: DRAM 22: input / output controller

23: RS-232C interface 24: PTZ driver

25: PTZ Driver 26: Video Controller

27: Video Encoder 28: Ethernet Interface

29: flash memory 30: DRAM

31: Ethernet memory controller 32: Web server CPU

33: Ethernet MAC section 34: 10/100 BASE TX transceiver

35: LAN interface 36: flash memory

37: SRAM 38: LAN Memory Controller

39: control unit 40: wireless access interface

41: antenna 42: wireless LAN signal processing unit

43: USB interface 44: Processor interface

45: intranet 46: PC

47: FTP server 48: CCD camera

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the present invention provides a CCD unit 2 for converting an image of a subject incident through the lens 1 into an electric signal and processing the digital image information into a digital image information. A CPU 3 for controlling the transmission of digital image information and controlling the function of the CCD camera as a whole; a main memory unit 4 for storing image information in accordance with a storage control signal of the CPU 3; PTZ control unit 5 for controlling the operation of the PTZ device according to the PTZ (pan / tilt / zoom) control signal of 3) and the image signal captured according to the analog transmission control signal of the CPU (3) in analog form From the video signal transmission section 6, the Ethernet signal processing section 7 for temporarily processing and outputting an image signal as an Ethernet transmission signal according to the wireless LAN transmission control signal of the CPU 3, and from the Ethernet signal processing section 7 The external access point unit 8 converts the output image signal into a wireless LAN signal. Wireless LAN unit 9 to transmit to.

The CCD unit 2 converts the optical imaging signal of the subject photographed through the lens 1 into an electrical signal, and a digital signal from an analog image signal input from the CCD 10. An A / D converter 11 for converting the signal into an audio signal, an audio amplifier 13 for amplifying a voice signal input through the microphone 12 to a predetermined level in synchronization with the imaging of the CCD 10, and the audio amplifier ( Digital signal processing of the audio signal output from the codec 14 and the digital image signal output from the A / D converter 11 and the audio signal output from the codec 14; DSP processor 15, JPEG / MPEG coprocessor 16 for compressing digital image information input from CCD unit 2 to a predetermined level, and audio signal output from codec 14 are amplified to a constant level The audio amplifier 18 that emits to the outside through the speaker 17 It is.

In addition, the main memory unit 4 stores data in accordance with a memory controller 19 for generating a memory control signal according to a storage control signal of the CPU 3, and a flash memory control signal of the memory controller 19, or Or a flash memory 20 for reproducing and a DRAM 21 for storing or reproducing data in accordance with a RAM memory control signal of the memory controller 19.

And, the PTZ control unit 5 is an input / output controller 22 for generating a PTZ drive control signal according to the PTZ control signal of the CPU 3, and in accordance with the PTZ drive control signal of the input / output controller 22 It includes a PTZ driver 25 for controlling the drive of the PTZ drive device 24 through the RS-232C interface (23).

In addition, the video transmission unit 6 is a video controller 26 for receiving and outputting a digital image signal from the DSP processing unit 15 in accordance with the video transmission control signal of the CPU (3), and the video controller 26 of A video encoder 27 encodes an image signal according to a video encoding control signal and transmits the image signal to an external device through a video terminal.

In addition, the Ethernet signal processing unit 7 images the Ethernet interface 28 for interfacing the wireless LAN transmission control signal of the CPU 3 and the wireless LAN transmission control signal input via the Ethernet interface 28. The web server CPU 32 temporarily processing the signal as an Ethernet signal, and temporarily storing the processed Ethernet image data in the flash memory 29 or the DRAM 30 in accordance with the storage control signal of the web server CPU 32. An Ethernet memory controller 31, an Ethernet MAC unit 33 for converting an image signal into a 10/100 BASE TX Ethernet MAC signal according to the Ethernet processing signal of the web server CPU 32, and the Ethernet MAC unit 33 It includes a 10/100 BASE TX transceiver (34) for transmitting the Ethernet signal of the wired external Ethernet equipment.

Here, the wireless LAN unit 9 flashes the LAN memory 35 to interface the image data signals output from the web server CPU 32 and the image data signals input via the LAN interface 35. Or LAN memory controller 38 temporarily suspended in SRAM 37 and image data signals read from flash memory 36 or SRAM 37 through LAN memory controller 38 are converted into WEP or IEEE 802.11 MAC. The wireless LAN signal to the control unit 39 outputting the control unit 39, the wireless connection interface 40 for interfacing the image data signal outputted from the control unit 39, and the image data signal inputted through the wireless connection interface 40. It includes a wireless LAN signal processor 42 for processing and emitting to the external access point unit 8 through the antenna 41.

One end of the LAN memory controller 38 includes a USB interface 43 for transmitting a digital image signal according to a USB control signal, and a processor interface 44 for processing the image data signal according to a control signal of the controller 39. Is connected.

Next, the operation and effects of the present invention as described above will be described.

As shown in FIG. 3, the CCD camera 48 of the present invention connects to the intranet 45 or the Internet via the access point unit 8, and provides a web of image data signals which are currently captured in real time. It can be displayed on the screen or stored in the server 47.

That is, when the subject is imaged on the CCD 10 of the CCD unit 2 through the lens 1 of the CCD camera of the present invention, the CCD 10 converts the imaged signal into an electrical signal and converts the A / D converter 11 into an electric signal. ) Then, the A / D converter 11 converts the analog image pickup signal input from the CCD 10 into a digital signal and outputs the digital signal to the DSP processor 15. At this time, the audio amplifier 13 of the CCD unit 2 also detects an audio signal in synchronization with the captured image of the CCD 10 through the microphone 12, and then amplifies and outputs the audio signal to the codec 14. The codec 14 converts the input voice signal into a digital signal and outputs the digital signal to the DSP processor 15. Then, the DSP processor 15 digitally processes the input digital image pickup signal and outputs the digital signal to the JPEG / MPEG coprocessor 16. In addition, the JPEG / MPEG coprocessor 16 compresses the image and audio signals input from the DSP processor 15 and then transmits the signals according to the control signal of the CPU 3, wherein the CPU 3 When the processed image signal needs to be temporarily stored, it is stored in the flash memory 20 or the DRAM 21 through the memory controller 19 of the main memory section 4.

In this case, the CPU 3 transmits the image data input from the JPEG / MPEG coprocessor 16 to an external device, for example, the video encoder 27 through the video controller 26 when transmitting to the external device. To be sent. Then, the video encoder 27 encodes the input image data into an analog signal and transmits the same to the corresponding monitor / TV.

Here, the CPU 3 outputs the PTZ control signal to the input / output controller 22 of the PTZ control unit 5 when a function control signal for PTZ control is input from the outside. Then, the input / output controller 22 of the PTZ control unit 5 outputs to the PTZ driver 25 generating the PTZ drive control signal according to the PTZ control signal of the CPU 3. Accordingly, the PTZ driver 25 controls the PTZ (pan / tilt / zoom) driving of the PTZ driving device 24 through the RS-232C interface 23 according to the PTZ driving control signal of the input / output controller 22. do.

On the other hand, when it is necessary to transmit the image data signal to the external network, the CPU 3 outputs a network transmission control signal to the web server CPU 32 via the Ethernet interface 28. Then, the web server CPU 32 outputs the image data signal photographed according to the network transmission control signal of the CPU 3 to the Ethernet MAC unit 33 of the Ethernet signal transmission unit 7. The Ethernet MAC unit 33 converts the input image data into a 10/100 BASE TX Ethernet MAC signal and outputs the same to the 10/100 BASE TX transceiver 34. In addition, the 10/100 BASE TX transceiver 34 transmits the Ethernet signal of the Ethernet MAC unit 33 to an external Ethernet device (not shown) connected by wire.

Here, if a function control signal for requesting the transmission of image data captured in real time by the CCD 10 from the outside is input to the CPU 3, the CPU 3 transmits the WLAN transmission control signal to the Ethernet interface 28. Through the output to the web server CPU 32 of the Ethernet signal processing unit (7). Then, the web server CPU 32 receives the compressed image data signal from the CPU 3 according to the wireless LAN transmission control signal input via the Ethernet interface 28 and temporarily processes the image data signal into an Ethernet signal to provide a camera memory controller ( 31 is stored in the flash memory 29 or the DRAM 30.

At this time, the web server CPU 32 outputs the image data signal stored in the flash memory 29 or the DRAM 30 to the LAN memory controller 38 via the LAN interface 35 of the wireless LAN unit 9. . Then, the LAN memory controller 38 temporarily stores the image data signal input via the LAN interface 35 in the flash memory 36 or the SRAM 37. At this time, the controller 39 reads the image data signal from the flash memory 36 or the SRAM 37 through the LAN memory controller 38, and then converts the read image data signal into a WEP or IEEE 802.11 MAC. It outputs to the WLAN signal processor 42 via the connection interface 40. Then, the WLAN signal processor 42 processes the image data signal input via the wireless access interface 40 as a WLAN signal and emits the same to the external access point unit 8 through the antenna 41.

Therefore, the external access point unit 8 existing in the same radio cell receives image data signals transmitted as real-time radio signals from the CCD camera 48 of the present invention, processes certain signals, and then processes the intranet 45 or the Internet. The data is transmitted to the PC 46 connected to the TCP / IP network via the 45. Then, the PC 46 can watch a multimedia signal of video and audio transmitted in real time from the CCD camera 48 of the present invention using a web browser. At this time, the image data signal of the CCD camera 48 may be remotely stored in the FTP server 47 connected to the Internet 45 or the intranet 45.

As described above, the present invention includes a wireless LAN cell in a CCD camera and transmits and receives image information generated by the CCD camera to an external display system via a wireless LAN as a wireless signal, thereby real-time image information captured by the CCD camera. Because it can be viewed from a long distance, it has the advantage of significantly improving the functionality of the CCD camera.

According to the present invention, the image information captured by the CCD camera can be stored in a storage space of a specific device by accessing the Internet through a wireless LAN in real time, so that a large amount of images can be processed and thus the information of the CCD camera. It also has the effect of maximizing usability.

Claims (3)

A CCD unit for converting an image of a subject incident through a lens into an electrical signal and processing the digital image information; a CPU for controlling transmission of digital image information input from the CCD unit; and a wireless LAN transmission control signal of the CPU. Ethernet signal processing unit for temporarily processing and outputting the image signal as an Ethernet transmission signal, and a wireless LAN unit for converting the image signal output from the Ethernet signal processing unit to a wireless LAN signal to transmit to an external access point unit CD camera using wireless LAN. The web of claim 1, wherein the Ethernet signal processor is configured to temporarily process an image signal into an Ethernet signal according to an Ethernet interface for interfacing a wireless LAN transmission control signal of a CPU and a wireless LAN transmission control signal input through the Ethernet interface. An Ethernet memory controller for temporarily storing Ethernet image data temporarily processed in a memory according to a server CPU, a storage control signal of the web server CPU, and a 10/100 BASE TX Ethernet image signal according to the Ethernet processing signal of the web server CPU. An Ethernet MAC unit for converting a MAC signal, and a 10/100 BASE TX transceiver for transmitting the Ethernet signal of the Ethernet MAC unit to an external Ethernet device connected by wire. The LAN apparatus of claim 1, wherein the WLAN unit interfaces with an image data signal output from a web server CPU, a LAN memory controller configured to temporarily store image data signals input via the LAN interface in a memory, and the LAN. A control unit for converting and outputting the image data signal read from the memory into a WEP or IEEE 802.11 MAC through a memory controller, a wireless access interface for interfacing the image data signal output from the control unit, and inputted through the wireless access interface. CD camera using a wireless LAN, characterized in that the wireless LAN signal processing by processing the image data signal to the external access point through the antenna.