CN2653787Y

CN2653787Y - Receiver for shanghai security information

Info

Publication number: CN2653787Y
Application number: CN 03256378
Authority: CN
Inventors: 王向东; 张建成
Original assignee: DONGFANG SHANGZHENG DATA COMMUNICATION Co LTD SHANGHAI
Current assignee: DONGFANG SHANGZHENG DATA COMMUNICATION Co LTD SHANGHAI
Priority date: 2003-08-08
Filing date: 2003-08-08
Publication date: 2004-11-03
Anticipated expiration: 2013-08-08

Abstract

The utility model relates to a certificate information receiver. Under the control of the CPU(6), high frequency signal is demodulated by the frequency compound tuner(1), then demodulated by medium frequency demodulator(2), the demodulated video signal is transmitted to the video processor, the digital signal picked up is transmitted to the digital signal processor(4) to be processed, the processed teletex signal is transmitted to the encoded processor(5) to be processed, and then is transmitted to the CPU(6); the utility model also includes an USB connector module(7) which uses for transmitting the data which is processed by the CPU(6) to computer and simultaneously receive the instruction which is transmitted by the computer, and transmit the instruction to CUP(6); the utility model has the good effects that: user only needs to insert an USB plug to the computer, the user can use the computer, not need to open the computer case and close the computer power supply, brings greatly convenience for user.

Description

Shanghai Stock Exchange's intelligence receiver

Technical field

The utility model relates to a kind of data broadcast receiving apparatus, relates in particular to a kind of Shanghai Stock Exchange intelligence receiver.

Background technology

Present data broadcasting receives product, a kind of is the product of the built-in computer plug-in card form of isa bus or pci bus interface, the product of this class card insert type power supply of when installing and using, must shutting down computer earlier, open computer cabinet then, product is inserted in the corresponding bus interface expansion slot and could use; Belong to the family expenses information products because data broadcasting receives product, the user mostly is non-professional domestic consumer, so user installation is used relatively difficulty; Another kind is the external product; External communication interface commonly used has serial communication interface and parallel communication interface, and therefore serial communication interface can not adopt this class communication interface because data are serial output, and data throughout is too little, is not suitable for the big product of this class data throughout of data broadcasting.The characteristics of parallel communication interface are that data parallel sends, data throughout is big, can satisfy the requirement of datacast transmissions amount, but there is a problem in parallel interface, be exactly that this interface does not provide the power supply of external equipment to supply with, like this, adopt the external equipment of parallel interface all necessary self-powered, by an external power supply it is powered, product component is many, and wiring is loaded down with trivial details, and this class external product is not supported plug and play yet simultaneously, therefore not tenaculum electric heating plug is installed and used and is still extremely inconvenience.

Summary of the invention

The utility model technical issues that need to address have provided a kind of Shanghai Stock Exchange intelligence receiver, be intended to solve also do not have at present can high speed transmission data again can plug and play, the plug of tenaculum electric heating, the defective of this device of dispense with outer connecting power.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises frequency synthesis tuner, if demodulator, video processor, digital signal processor, encryption processor, CPU; Under CPU control, with the high-frequency signal of cable television system by the frequency synthesis tuner carry out that the frequency synthesis phase-locked loop is tuning, AFC automatic frequency tracking, radio demodulating handle, pass through IF demodulator demodulates then, the vision signal that demodulation is come out is delivered to video processor and is carried out Video processing, the digital signal that extracts is sent to digital signal processor processes, treated teletext data is sent to encryption processor and handles, and is transported to CPU again; The utility model also comprises usb interface module, and described usb interface module will be sent to computer through the data that CPU handles, and go back the instruction that receiving computer sends simultaneously, and CPU is sent in instruction.

Compared with prior art, the beneficial effects of the utility model are: owing to adopted high speed USB communication interface scheme, the user just can use only need simply a USB plug being inserted on the computer, and will not open by computer cabinet, use to the user to bring great convenience.This interface can also provide power supply to external equipment, has saved the trouble of user's external power supply.This device is also supported Microsoft Windows plug and play, and this installs to product software and brings a lot of convenience.This device is gone back the plug of tenaculum electric heating, and the user at any time can directly be connected use with computer, and the power supply of needn't shutting down computer earlier.The appearance of this device, make that any one layman can make things convenient for, safety install and use this device, make Shanghai Stock Exchange's intelligence receiver really become genuine family expenses information products.

Description of drawings

Fig. 1 is a block diagram of the present utility model;

Fig. 2 is the block diagram of usb interface module;

Wherein: frequency synthesis tuner 1, if demodulator 2, video processor 3, digital signal processor 4, encryption processor 5, CPU6, usb interface module 7, USB transceiver 71, serial interface engine 72, USB interface 73, general purpose microprocessor 74, program and data storage 75, input/output port 76.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

By Fig. 1, Fig. 2 as seen: the utility model comprises frequency synthesis tuner 1, if demodulator 2, video processor 3, digital signal processor 4, encryption processor 5, CPU6; Under CPU6 control, with the high-frequency signal of cable television system by frequency synthesis tuner 1 carry out that the frequency synthesis phase-locked loop is tuning, AFC automatic frequency tracking, radio demodulating handle, pass through if demodulator 2 demodulation then, the vision signal that demodulation is come out is delivered to video processor 3 and is carried out Video processing, the digital signal that extracts is sent to digital signal processor 4 and handles, treated teletext data is sent to encryption processor 5 and handles, and is transported to CPU6 again; The utility model also comprises usb interface module 7, and described usb interface module 7 will be sent to computer through the data that CPU6 handles, and go back the instruction that receiving computer sends simultaneously, and CPU6 is sent in instruction;

Described usb interface module 7 comprises USB transceiver 71, serial interface engine 72, USB interface 73, general purpose microprocessor 74, program and data storage 75, input/output port 76; General purpose microprocessor 74 receives the data of handling through CPU6 and deposits program in and data storage 75 by input/output port 76, and USB interface 73 is sent to the serial interface engine USB port with data from program and data storage 75 automatically according to instruction and delivers to main frame; Through USB port the instruction that computer sends is sent to serial interface engine 72 by USB transceiver 71 simultaneously; Decode and error correction sends it back CPU6 through USB interface 73, program and data storage 75 and general purpose microprocessor 74 and input/output port 76 again by described serial interface engine 72.

Below principle of the present utility model is described as follows:

The high-frequency signal of cable television system is at first delivered to the frequency synthesis tuner and is carried out the high frequency demodulation, the frequency synthesis tuner adopts the PHILIPS I2C of company bus all-channel frequency synthesis tuner, has the AFC automatic frequency tracking, can realize the precise frequency tracking by the I2C bus by CPU, signal is received be in optimum state all the time, the signal that has improved entire system greatly receives adaptability.After the high-frequency signal process frequency synthesizer tuning unit demodulates, enter if demodulator and carry out intermediate frequency demodulation and outputting video signal.Vision signal is sent to video processor, and video processing part adopts programmable digital signal process chip leading in the world, this processor is built-in video AD C, self-adapting intelligent digital filter, digital phase-locked loop.The performance of this processor aspect video phase distortion, noise suppressed is very outstanding, greatly reduces the error rate of data.The digital signal of video processor output enters digital signal processor and carries out data processing, 2Kbyte FIFO (first in first out) high-speed cache has partly been adopted in digital processing, inbound pacing is fast, supports whole audience data broadcasting to receive fully, and maximum receiving code speed can reach 4Mbps; Support the full system type pictorial video decode, high-performance multi-format data decoding function is supported at present multiple form and standards such as all data broadcasting broadcasting formats, IntercastTM compatible, European WST, Chinese CCST, North America NABTS and MOJI both at home and abroad.The digital image, text and data of process digital processor processes is sent to encryption processor and carries out the encryption and decryption processing, and data are sent to CPU then.This CPU and usb interface module finish jointly that usb data is handled, the USB device request is handled, and receive the most at last and the data of decoding are sent to main frame by usb bus.

The USB transceiver is a driving interface circuit, is used for driving the data wire D+ and the D-of usb bus.Serial interface engine (SIE) is finished serial data is encoded and decoded, and data are carried out error correction, finally finish and USB interface between data send and receive.Serial interface engine (SIE) and USB interface are called the USB kernel altogether, the USB kernel the is integrated repertoire of USB device, and the USB kernel of this enhancing can be handled most usb protocol automatically under the commands for controlling of general purpose microprocessor.General purpose microprocessor is a microprocessor that strengthens the USB function, the speed of its execution command is faster, and its program code and user device characteristics describe and can download by usb bus from usb host, and can be realized the plug process of subscriber equipment by the program command of downloading.Program and data storage are used for program code stored and data.The input and output notch portion is used for receiving data, and all control signals of transmitting system.

Aspect security of system; this product has strict data encryption system; this product adopts hardware encipher, decrypt scheme; all data must could be used through the hardware decryption on the card; whole system has very high fail safe; thoroughly stopped product and number, the situation of steal-number takes place, and protected user's vital interests effectively.

Claims

1. Shanghai Stock Exchange's intelligence receiver comprises frequency synthesis tuner (1), if demodulator (2), video processor (3), digital signal processor (4), encryption processor (5), CPU (6); Under CPU (6) control, with the high-frequency signal of cable television system by frequency synthesis tuner (1) carry out that the frequency synthesis phase-locked loop is tuning, AFC automatic frequency tracking, radio demodulating handle, pass through if demodulator (2) demodulation then, the vision signal that demodulation is come out is delivered to video processor (3) and is carried out Video processing, the digital signal that extracts is sent to digital signal processor (4) and handles, treated teletext data is sent to encryption processor (5) and handles, and is transported to CPU (6) again; It is characterized in that: also comprise usb interface module (7), described usb interface module (7) will be sent to computer through the data that CPU (6) handles, and go back the instruction that receiving computer sends simultaneously, and CPU (6) is sent in instruction.

2. Shanghai Stock Exchange according to claim 1 intelligence receiver is characterized in that: described usb interface module (7) comprises USB transceiver (71), serial interface engine (72), USB interface (73), general purpose microprocessor (74), program and data storage (75), input/output port (76); General purpose microprocessor (74) receives the data of handling through CPU (6) and deposits program in and data storage (75) by input/output port (76), USB interface (73) is sent to serial interface engine (72) with data from program and data storage (75) automatically according to instruction and encodes and error correction, delivers to main frame by USB transceiver (71) through USB port through the data of coding and error correction; Through USB port the instruction that computer sends is sent to serial interface engine (72) by USB transceiver (71) simultaneously; Decode and error correction sends it back CPU (6) through USB interface (73), program and data storage (75) and general purpose microprocessor (74) and input/output port (76) again by described serial interface engine (72).