KR200224048Y1 - Apparatus for tranmitting and receiving picture using radio communication equipment - Google Patents

Abstract

The present invention relates to a video transmission and reception apparatus, and more particularly, to a video transmission and reception apparatus capable of transmitting a still image or a video using a conventional wireless communication device, that is, a radio. The configuration of an image transmission / reception apparatus using a wireless communication device of the present invention includes a data input module unit for receiving an image signal generated by an image input apparatus such as a video camera; A main processor which processes the input video signal; A signal controller for compressing, encrypting, and formatting the input video signal; And transmitting and receiving the image data of which the processing is completed to the wireless communication device and inputting the image data input from the wireless communication device.

Description

Apparatus for tranmitting and receiving picture using radio communication equipment}

The present invention relates to a video transmission and reception apparatus, and more particularly, to a video transmission and reception apparatus capable of transmitting and receiving a still image or a video using a conventional wireless communication device, that is, a radio.

In modern society, the use of wireless communication devices, that is, radios that transmit voice signals over long distances, is becoming more diverse. Not only military and police radio communication equipment, but also for civilian use, hospitals, security companies, construction companies, large distribution stores, etc. are innumerable.

In general, a radio communication device, a so-called radio, is a device that directly transmits a voice signal to a receiving side in the form of electromagnetic waves or reflects it to an ionospheric layer or communication satellite in the atmosphere. In such wireless communication, information is loaded on a carrier through a process of changing the amplitude, frequency, phase, etc. of a carrier by modulation, that is, an original signal. Amplitude modulation (AM) is a modulation method in which the amplitude of the carrier wave is changed in accordance with the waveform of the signal wave. In this method, information is transmitted by modulating the intensity of the wave with the sideband frequency on both sides of the lowest peak of the carrier wave. The envelope of the modulated wave becomes a waveform similar to the signal wave. In this process, only amplitude changes and frequency does not change. On the other hand, in frequency modulation (FM), a frequency is changed instead of an amplitude to transmit necessary information from a transmitter to a receiver. The baseband signal is transmitted in response to a frequency deviation of a sinusoidal carrier. In this method, even if noise is mixed during transmission and the amplitude of the signal changes, the original signal can be almost restored by cutting the top and bottom of the signal and inputting it to the discriminator. In addition, phase modulation is one of modulation methods in which an AC signal having a constant frequency is shifted in phase with a change in an input signal, and the information is transmitted in an amount of 'shift'.

Meanwhile, in the present multimedia era, not only audio signals but also various data such as still images, moving images, and texts are handled. Therefore, if the existing wireless communication device can be used to transmit and receive various data including still and moving images other than voice media, its use will be greatly improved. For example, a helicopter that detects illegal fishing at sea will be able to vividly communicate the situation through video using existing wireless communication devices. In addition, in the case of an emergency vehicle, that is, in the case of a rescue team or a hospital vehicle, it may be possible to transmit the patient's condition to the hospital and receive first aid during transportation. In addition, in case of natural disasters, that is, in case of wildfire or other disasters, it will be possible to vividly transmit the situation as an image. However, the conventional wireless communication device is limited to the transmission and reception of voice signals, and thus, various data transmission and reception such as images are restricted.

Accordingly, an object of the present invention is to make it possible to transmit and receive information such as video without additional equipment by using a wireless communication device currently in use.

1 is a view showing the use of the image transmitting and receiving device of the present invention connected to an existing wireless communication device

2 is a view showing a configuration example of a video transmission and reception apparatus using a wireless communication device according to the present invention

3 is a view showing in more detail an example of the configuration of a video transmission and reception apparatus using a wireless communication device according to the present invention;

4 is a view showing an example of the image data format of the image transmission and reception apparatus according to the present invention;

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

200: data input module unit 210: main processing unit

212: input device 214: A / D inverter

220: signal controller 222: central processing unit

224: clock generator 230: transceiver

240: power control unit

In order to achieve the above object, an image transmission / reception apparatus using a wireless communication device includes: a data input module unit 200 which receives an image signal generated by an image input apparatus such as a video camera; A main processor 210 for processing the input video signal; A signal controller 220 for compressing, encrypting, and formatting the input video signal; Transmitting and receiving unit 230 for transmitting the completed image data to the wireless communication device, and inputs the image data input from the wireless communication device: a power control unit 240 for controlling and supplying voltage current to each part It is characterized by including.

In addition, the data input module of the image transmission and reception apparatus according to the present invention includes an input device 212 for inputting a video signal from an external device, and an A / D converter 214 for analog-to-digital conversion of the input video signal Characterized in that.

In addition, the main processing unit of the image transmitting and receiving device according to the present invention is characterized in that consisting of the central processing unit 222 and the clock generator 224.

In addition, the signal control unit of the image transmission and reception apparatus according to the present invention is a JPEG encoder and JPEG decoder for compressing and decompressing the input digital image data, a secret code generator for encrypting and decrypting the compressed image data, data code mixer And a formatter, a code sequencer, and a digital processor.

In addition, the image transmitting and receiving device according to the present invention is characterized in that it further comprises a computer connection for controlling and managing its functions and operations unattended or remotely.

In addition, the image transmitting and receiving device according to the present invention is characterized in that it further includes an option for maximizing and maximizing the function.

In addition, the video transmitting and receiving device according to the present invention is characterized in that it further comprises a security connection for transmitting the video signal with security.

In addition, the video transmitting and receiving device according to the present invention is characterized in that it is used by being connected to the wireless communication device separately from the connection device.

In addition, the image transmission and reception device according to the present invention is characterized in that it is used integrally with the wireless communication device.

In addition, the video transmission and reception device according to the present invention is characterized in that the self-destructing function is built-in.

(Example)

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. This embodiment is intended to explain the present invention more clearly, and is not intended to limit the invention to this embodiment.

1 is a diagram showing the use of the image transmission and reception apparatus of the present invention connected to an existing wireless communication device. In the drawing, reference numeral 100 denotes a wireless communication device in use. The wireless communication device 100 is connected to the image transmission and reception apparatus 110 of the present invention, the image transmission and reception apparatus 110 is an image input device 130 for providing a video signal to be transmitted, and the image input device 130 A monitor 120 for displaying an image input from the display unit or displaying an image signal received from the wireless communication device 100 by the image transmitting / receiving apparatus 110 is connected. The video input device may use a built-in camera or may be connected to an external video camera as shown in the drawing.

When the image is transmitted using the image transmitting / receiving apparatus of the present invention, the image to be transmitted is input using an image input apparatus such as a built-in camera or an external camera. At this time, the input image is displayed on a monitor connected to the image transmitting and receiving apparatus. The user selects and confirms the transmission screen while looking at the screen displayed on the monitor. After that, the user transmits an image by pressing an image transmission selection button or the like mounted on the image transmission / reception apparatus of the present invention. At this time, the video signal is compressed in the video transmitting and receiving device, and then encrypted and transmitted to the wireless communication device, and wirelessly transmitted from the wireless communication device. This compression and encryption is to achieve the features of the present invention, to reduce the time required to transmit and receive video signals through a conventional wireless communication device for the security of communication. The process in which the input video signal is compressed and encrypted by the video transceiver is described later in more detail.

The method of receiving an image signal through the image transmitting / receiving apparatus of the present invention is performed through the reverse process of the above-described image transmitting method. That is, when the video signal transmitted from a long distance is transmitted to the existing wireless communication device 100, the video signal is transmitted to the input unit of the video transceiver of the present invention. In this case, the video transmitting and receiving device 110 decompresses the video signal, releases encryption, and displays the video on the monitor.

2 is a view showing an embodiment of an image transmitting and receiving device according to the present invention. As can be seen in the figure, the image transmission and reception apparatus of the present invention comprises a data input module 200, the main processing unit 210, the signal control unit 220, the signal transmission and reception unit 230 and the power control unit 240. The data module unit 200 includes a data input device 202 and a data changer 204, and the main processor 210 includes a central processing unit 212 and a clock signal generator 224. The signal controller 220 is a signal processing device, the signal transceiver 230 is a wireless transmission and reception device, and the power controller 240 is a power management device, that is, a power source.

Referring to the flow of the signal and the processing state of the above configuration is as follows. First, an image signal is input to the input device 202. The video signal may be a video video signal input through a camcorder or the like. At this time, the video image is a signal formatted in NTSC. The video signal input to the data input module unit 200 is an analog signal and is analog-to-digital converted by the A / D converter 204. This conversion process is described later because it is advantageous to compress and encrypt the image data. In this way, the input and analog-digital converted image signal is transmitted to the rear stage, that is, the main processor 210.

The main processor 210 processes the input digital video signal in synchronization with the clock signal generated by the clock generator 214. That is, the central processing unit 212 compresses and stores the analog-digital converted signal according to the command, and encrypts the compressed image data using an encryption code. This compression method and encryption method will be described later. The compressed digital image data is transmitted to the signal controller 220 at the rear end.

The signal controller 220 formats a signal, combines the signals, and performs code changes in order to transmit image data to the outside through a wireless communication device. In addition, the image data is transmitted to the wireless communication device through the signal transmission and reception unit 230 or serves to relay the video data input through the wireless communication device can be processed in the image transmission and reception apparatus of the present invention.

The signal transmitter / receiver 230 transmits the compressed, encrypted, and formatted video data from the main processor 210 and the signal controller 220 to the wireless communication device, and conversely receives the video signal input from the wireless communication device. Wireless transmission device is provided. Therefore, the wireless transmission apparatus is built in a transmitter and a receiver together, so that the signal controller operates as a receiver or a transmitter as necessary.

3 is a diagram showing the configuration of FIG. 2 in more detail.

As described above, when a video signal is input by an external device such as a camcorder, the signal is mixed by a level mixer and then analog-to-digital converted by an A / D converter. The converted video signal is transferred to and stored in a memory buffer. The image data stored in the memory buffer is compressed to reduce confidentiality and capacity before being transmitted to the outside through the wireless communication device. This compression is performed through a general JPEG compression process, which is described in more detail as follows.

The image information is transmitted after compressing one field or frame in the JPEG encoder, and at this time, the line-by-line compression is performed on one field or frame. That is, assuming that one frame is 230 lines, the line is compressed in units of five lines, thereby performing 46 compression processes for one frame. Performing compression for each of the five lines is one example, and the number of lines may be differently selected as necessary. As such, the compressed data is stored in the compressed order again in memory, and then encryption is performed.

The encryption process will be described below. In a situation where compressed data is sequentially arranged for one field or frame, the compressed data is changed and transmitted. That is, when 46 pieces of compressed data exist for one frame as in the above example, the order is transmitted in reverse. This may require a compressed data change table. There are a large number of tables. In each table, the order of data to be changed is described in advance, and when a specific table is selected, the compressed data is changed according to the order of change described in this table, and then the changed data is transmitted. . The data change table is generated in a secret code generator and the change table is mixed by compressed data with a data code mixer and formatter. The mixed data is ordered by the code ordering unit, and then the data order is completely changed in the process of being processed in the digital processor. The compressed and encrypted video data is stored in the central processing unit to wait for transmission.

In order to transmit video data, it is necessary to convert to a certain format. That is, since the video signal is compressed and transmitted for each field or frame, a certain protocol is required to receive the transmitted video data and reproduce the video. To do this, data formatting is performed. In the data formatting, as shown in Fig. 4, the code S is placed in the header of the data so as to know that image data transmission starts. When the code is received, the receiving side recognizes that image data is received thereafter and prepares to receive, decompress, and decode the data.

Next, the encryption code E is planted. That is, a number of corresponding code change tables are planted among a plurality of code change tables. When this code is received, the receiving side loads the corresponding table from the plurality of code change tables and changes the order of the compressed data, and arranges the compressed data in the original data order through the reverse process.

Next, a code P for a compression method of currently transmitted video data is planted. In other words, the number of lines of the currently compressed video data is compressed and transmitted in the code. The receiving side decompresses the received video data according to this code.

Next, the encrypted and compressed data I is transmitted for each field or frame. Then, other data A is transmitted, and finally, the data transmission end code F is transmitted.

The image data processed by the central processing unit is transmitted to the transceiver through the control unit and then transmitted to the wireless communication device.

On the other hand, when the image data is received from an external device, the received data is displayed in the image transmitting and receiving device of the present invention through the reverse process of the process described so far. That is, when the wireless communication device receives the image data through the external device, the received image data is input to the transceiver of the present invention device. This signal is transmitted to the central processing unit via the control unit. The central processing unit interprets the data format, which first decrypts and rearranges the compressed data. In other words, the received data is stored for each field or frame, and then the table that changes the order of the compressed data is retrieved and rearranged. Then, to decompress, the code describing the compression method determines how many lines the currently compressed image data is compressed. After decompression, the image data is displayed on the display device through the display controller.

On the other hand, the image transmission and reception apparatus of the present invention can be used by connecting a computer device. Such computer devices can be used to control and manage the devices of the present invention unattended or remotely. A secure connection device may also be connected to the computer device and used to maintain security apart from the compression and encryption described above. An advantage of connecting and using the computer is that the utility of the device of the present invention can be improved by connecting various additional devices to the computer. That is, for example, it can be usefully used for delivering an image stored in auxiliary storage means such as a scanner for delivering still images or a CD ROM title.

Another usefulness of the device of the present invention is that it has a self-destructive function, and when the device is lost or stolen, it can be self-destructed for the security of the circuit and the confidentiality of the information. When the device of the present invention is stolen, the management department can automatically self-destruct by sending a self-destructing signal, and has a built-in function to automatically self-destruct when disassembled for circuit analysis by another person.

By implementing the present invention as described above, it is possible to easily and conveniently send and receive still or moving pictures using the existing wireless communication device. Therefore, as described above, it is possible to transmit and receive video signals between video transmitters or directly, using an unmanned repeater, a backbone communication network, a satellite, and the like. The device of the present invention is for military use, and it is possible to transmit the enemy's penetration situation or the situation on the battlefield to the relevant unit as a video, and to transmit more precisely by transmitting the police's criminal tracking, identification inquiry, and the incident site by using the video. Maintenance is possible. In addition, it can be used to cope with emergency situations such as hospital vehicles and rescue teams, and can be used in all weather even when the wired network is disconnected in the event of a natural disaster.

Those skilled in the art can recognize that in addition to the embodiments described above, various modifications, changes, and substitutions of components are possible without departing from the spirit and basic concept of the invention described in the appended utility model registration claims.

Claims (10)

In the video transmission and reception apparatus using a wireless communication device, A data input module unit for receiving an image signal generated by an image input apparatus such as a video camera; A main processor which processes the input video signal; A signal controller for compressing, encrypting, and formatting the input video signal; And a transmitter / receiver which transmits the image data of which the processing is completed to a wireless communication device and inputs image data input from the wireless communication device. The wireless communication method of claim 1, wherein the data input module of the image transmission / reception apparatus includes an input unit for inputting a video signal from an external device, and an A / D converter for analog-to-digital conversion of the input video signal. Video transmission and reception device using a device. The apparatus of claim 1, wherein the main processor of the image transmitting and receiving apparatus comprises a central processing unit and a clock generator. The apparatus of claim 1, wherein the signal controller of the image transmitting / receiving apparatus comprises: a JPEG encoder and a JPEG decoder for compressing and decompressing input digital image data, a secret code generator for encrypting and decrypting the compressed image data, and a data code. An apparatus for transmitting and receiving video using a wireless communication device, comprising a mixer, a formatter, a code sequence converter, and a digital processor. The video transmitting / receiving apparatus using a wireless communication device of claim 1, wherein the video transmitting and receiving apparatus further comprises a computer connection unit for controlling and managing functions and operations thereof unattended or remotely. The apparatus of claim 1, wherein the image transceiver further includes an option unit for diversifying and maximizing its function. The video transmitting / receiving apparatus using a wireless communication device according to claim 1, further comprising a security connection device for transmitting the video signal with security. The video transmitting and receiving device according to claim 1, wherein the video transmitting and receiving device is connected and used separately from a wireless communication device. The apparatus of claim 1, wherein the apparatus for transmitting / receiving an image is used integrally with a wireless communication device. The video transmitting and receiving device according to claim 1, wherein the video transmitting and receiving device has a self-destructing function.