CN2252363Y - Multi-media information inquiry machine - Google Patents

Abstract

The utility model relates to a multi-media information inquiry machine, which is composed of a main control board 9, a television interface circuit 11, a speech path / modem interface circuit 10, an infrared remote controller 7 and an infrared receiving and amplifying circuit 8. The utility model has the advantages of low cost, small size, convenient operation, electric power saving, etc. In particular, the model uses ordinary telephone lines as the circuits of information transmission, and uses a television as a playing device for images, characters and sound, that can realize an interactive multi-media information inquiry with the information center of a computer (such as querying the information of tour, traffic, stock market, market information, etc.). The utility model is widely suitable for households, hotels, offices, stations, etc.

Description

The multimedia information inquiry machine

The utility model belongs to computerized information inquiring technology field, relates to a kind of information inquiry machine that utilizes ordinary telephone line and clearinghouse computer to carry out the interactive inquiry multimedia messages and play on televisor.

In the prior art, it is existing many to utilize special telephone line (or computer network) and terminal to make multimedia information inquiry system, but concerning the user, not only volume is big, cost is high as information inquiry for a computing machine, and complicated operation, take electricity, if use dedicated communication line more to be unfavorable for popularizing.

The purpose of this utility model is to disclose a kind of multimedia information inquiry machine that utilizes ordinary telephone line to carry out multimedia information inquiry and play back on televisor, have advantages such as volume is little, cost is low, easy and simple to handle, power-saving, especially utilize ordinary telephone line as information transmission line, with televisor as figure, image, character and sound play device, can realize carrying out interactive multimedia information inquiry (as information such as inquiry tourism, traffic, stock market, market conditions, medical treatment), be convenient to penetration and promotion with clearinghouse computer.Being widely used in occasions such as family, hotel, office, station uses.

Implementation of the present utility model is: it is by master control borad, the televisor interface circuit, speech channel/modulation interface circuit, Infrared remote controller and infrared reception amplifying circuit are formed, master control borad is by central processing unit (CPU), memory under program, data memory and bus interface circuit are formed, speech channel/modulation interface circuit is by the speech path interface circuit, analogue signal processor becomes with bank of digital signal processors, it is characterized in that: the televisor interface circuit is by display controller, video coder, Display Register is formed with the voice-grade channel that links to each other with analogue signal processor; The televisor interface circuit all links to each other with central processing unit (CPU) by bus interface circuit with speech channel/modulation interface circuit; Infrared reception amplifying circuit links to each other with the I/O end of central processing unit (CPU); Contain numeral 0～9, upper and lower, left and right and affirmation button on the Infrared remote controller.

Preferably be connected with the dot matrix word library memory in the master control borad of the present utility model, call when showing for character information.

Televisor interface circuit of the present utility model preferably is connected with radio-frequency modulator, radio-frequency modulator links to each other with video coder, voice-grade channel, and it is modulated into radiofrequency signal to be suitable for those televisors that do not have AV terminal uses with composite video signal and sound signal.

Principle of work of the present utility model is as follows:

When using the utility model, the televisor interface circuit links to each other with televisor, and speech channel/modulation interface circuit links to each other with telephone set with telephone wire.In the time of need carrying out information inquiry, turn on televisor and the utility model, working procedure was sent to the televisor interface circuit by bus interface circuit and is shown the basic operation reminder-data after central processing unit on the master control borad (CPU) resetted, on televisor, show the fixing operation prompting this moment, the user uses Infrared remote controller to carry out selection operation or direct input information enquiry number, infrared reception amplifying circuit receives the instruction that the Infrared remote controller emission comes, it is become the I/O end that serial digital signal is delivered to central processing unit, and the digital query message of this order back formation of the interpretation of programs in the central processing unit executive routine memory deposits data in to be had in the storage.Central processing unit is by bus interface circuit access number word signal processor, digital signal processor is controlled analogue signal processor and speech path interface circuit again and is connected telephone line (disconnecting being connected of telephone line and telephone set this moment) and send accordingly and dial the number, after treating to set up communication link with clearinghouse computer, central processing unit is given digital signal processor the message that is stored in the data memory by bus interface circuit, undertaken giving analogue signal processor after the signal Processing by digital signal processor, the signal that is adapted at transmitting on the telephone line by analogue signal processor output is to the speech path interface circuit again, and the speech path interface circuit is coupled to this modulated signal that makes on the telephone wire and sends to clearinghouse computer.

Then, clearinghouse computer weaves message block by agreement according to the user inquiring order that receives, and the modulation-demodulation device by a correspondence returns to the utility model through telephone line, and the process that the utility model receives information is:

At first, digital signal processor is handled according to the information by the reception of speech path interface circuit after handling through analogue signal processor, send services request by bus interface circuit to central processing unit then, central processing unit responds this request and by bus interface circuit the information of receiving is taken out from digital signal processor, leaves in the data memory.The information that central processing unit receives by the interpretation of programs of carrying out in memory under program.If image information, the central processing unit executive routine carries out data of image information to deliver to the televisor interface circuit by bus interface circuit after the format conversion; If voice messaging is then delivered to the voice-grade channel of televisor interface circuit by the analogue signal processor in speech channel/modulation interface circuit; If Word message then takes out corresponding dot matrix video data in the dot matrix word library memory, want data presented to give display controller by the bus interface circuit handle, display controller then deposits the dot matrix video data that receives in Display Register, display controller constantly takes out data and converts composite synchronizing signal to according to the display requirement of television scanning from Display Register simultaneously, colour signal and colour subcarrier signal, give televisor by the synthetic corresponding composite video signal of video coder then, the sound signal in the televisor interface circuit directly comes from analogue signal processor.Radio-frequency modulator then is composite video signal and sound signal to be modulated into radiofrequency signal do not have the televisor of AV terminal to use for those.

After having inquired about, Infrared remote controller is sent and is discharged the telephone line instruction, and speech path interface circuit control this moment telephone set links to each other with telephone line, because data memory has been deposited the information that has inquired, the user still can read it repeatedly by Infrared remote controller.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is that the utility model constitutes the multimedia information inquiry system structural drawing.

Fig. 2 is a structure principle chart of the present utility model.

Fig. 3 is the schematic diagram of speech path interface circuit in the utility model.

Fig. 4 is a workflow diagram of the present utility model.

Referring to Fig. 2, central processing unit 12 is to adopt Dutch Philips 16 single-chip microcomputer 80C51XA of company in the master control borad 9, memory under program 13 is 27256, data memory 14 is a static random memory 62256, dot matrix word library memory 15 is 27020, it comprises the content of GB secondary character library, and it is main formation that bus interface circuit 16 adopts programming device GAL22V10.

Because the directly address space of 80C51XA is the 1M byte, thus simply decipher through bus interface circuit 16, central processing unit 12 can be in memory under program 13 reading command and preset parameter; Any at random reading and writing data in data memory 14; In dot matrix word library memory 15, read and the corresponding character pattern data of GB.Simultaneously, through bus interface circuit 16 visit televisor interface circuits 11, speech channel/modulation interface circuit 10.

Display controller 18 adopts the supporting industry standard VGA GD5425 chip of the U.S. CirrusLogic company of exportable TV composite synchronizing signal, colour signal and colour subcarrier signal simultaneously in the televisor interface circuit 11, video coder 28 adopts the AD722 of U.S. AnalogDevices company, and Display Register 17 adopts the dynamic ram of 512K (can expand to 1M) byte.Radio-frequency modulator 19 adopts the MC1374 of U.S. motorola inc.So far, the demonstration output of televisor interface circuit 11 will be according to PAL or NTSC standard output composite video signal and radiofrequency signal, and televisor interface circuit 11 will be in accordance with the VGA standard at inner interface with master control borad 9, port address when comprising master control borad 9 visit televisor interface circuits 11, the layout of internal function register is all in accordance with the requirement among the industrial standard VGA.

Digital signal processor 20 adopts the band microprocessor of U.S. CirrusLogic company and the combined chip MD4014 of self control program in speech channel/modulation interface circuit 10; Correspondingly analogue signal processor 21 adopts and the matching used chip MD1724 of MD4014.The sound signal of analogue signal processor 21 outputs is delivered to the voice-grade channel 27 of televisor interface circuit 11.

The standard package that infrared reception amplifying circuit 8 adopts Taiwan EVERLIGHT (hundred million light) electronics corporation to produce.

Infrared remote controller 7 adopts a commercialization standard package, and it serves as main formation with remote control coding and emission control chip M50462AP, and the scanning button is no less than 15.

Referring to Fig. 3, Fig. 2, being connected between relay J in the speech path interface circuit 22 control telephone line and telephone set, telephone line and the analogue signal processor 21, if then relay J adhesive when be effectively (for low level) from the control command output terminal OHREL of digital signal processor 20, the signal of telephone line reaches the two wires of being made up of C1, C2, R2～R9 by signal coupling transformer T and becomes that four spider lines form TX+, TX-, RX+, the RX-signal links to each other with the corresponding port of analogue signal processor 21.If OHREL is invalid (for high level) or the utility model when not powering up, not adhesive of relay J, then telephone line links to each other with telephone set, signal coupling transformer T and telephone line disconnection.

Referring to Fig. 1, Fig. 2, AV output terminal 24 of the utility model 2 or radio-frequency (RF) output end 23 link to each other with televisor 1, the telephone set input end 25 of the utility model 2 links to each other with telephone set 3, telephone wire input end 26 links to each other with telephone line constitutes a multimedia information inquiry terminal 6, this terminal 6 links to each other with clearinghouse computer 5 by telephone network 4, constitutes a complete multimedia information inquiry system thus.

Referring to Fig. 4, after the utility model powers up, on television screen, show the basic operation prompting, the dialing command information control speech path interface circuit 22 generation dialing and clearinghouse computer communication line that central processing unit 12 sends by receiving Infrared remote controller 7, master control borad 9 is by speech channel/modulation interface circuit 10 receiving computer information center main menu information and deliver to televisor interface circuit 11, main menu information appears on television screen, master control borad 9 obtains the operational order that Infrared remote controller 7 is sent by infrared reception amplifying circuit 8, the realization master menu is selected, by speech channel/modulation interface circuit 10 select command is sent to clearinghouse computer, and obtain selected information from clearinghouse computer, be reproduced on the television screen by televisor interface circuit 11 again; According to same operation, realize the submenu selection, until obtaining final required Query Information; Be operation equally, realize that on televisor the information roll screen shows by Infrared remote controller 7; When initiatively termination information of user shows, be back to the master menu show state.

The information of obtaining from clearinghouse computer, be stored in data memory 14, therefore the utility model is after disconnecting telephone line, still can continue to browse the information of having found, when the user need inquire about new information, the user connects telephone line once more by the operation of Infrared remote controller 7, continues inquiry to clearinghouse computer.

When the message segment on being reproduced in television screen contains speech play, master control borad 9 is connected telephone line backcasting machine information center by speech channel/modulation interface circuit 10 and is sent the speech play request instruction, and then control speech path interface circuit 22 and switch to speech pattern, the voice messaging that clearinghouse computer is sended over is delivered to the voice-grade channel 27 of televisor interface circuit 11 by analogue signal processor 21, is broadcasted by televisor then.

Claims (3)

1, a kind of multimedia information inquiry machine, form by master control borad (9), televisor interface circuit (11), speech channel/modulation interface circuit (10), Infrared remote controller (7) and infrared reception amplifying circuit (8), master control borad (9) is made up of central processing unit (CPU) (12), memory under program (13), data memory (14) and bus interface circuit (16), speech channel/modulation interface circuit (10) is made up of speech path interface circuit (22), analogue signal processor (21) and digital signal processor (20), it is characterized in that:

A, televisor interface circuit (11) are made up of display controller (18), video coder (28), Display Register (17) and the voice-grade channel (27) that links to each other with analogue signal processor (21);

B, televisor interface circuit (11) and speech channel/modulation interface circuit (10) all links to each other with central processing unit (CPU) (12) by bus interface circuit (16);

C, infrared reception amplifying circuit (8) link to each other with the I/O end of central processing unit (CPU) (12);

Contain numeral 0～9, upper and lower, left and right and affirmation button on d, the Infrared remote controller (7).

2,, it is characterized in that being connected with in the master control borad (9) dot matrix word library memory (15) according to the described multimedia information inquiry machine of claim 1.

3, according to claim 1 or 2 described multimedia information inquiry machines, it is characterized in that being connected with in the televisor interface circuit (11) radio-frequency modulator (19), radio-frequency modulator (19) links to each other with video coder (28), voice-grade channel (27).

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