CN1020051C - Visible image and Chinese character private terminal - Google Patents
Visible image and Chinese character private terminal Download PDFInfo
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- CN1020051C CN1020051C CN 91105143 CN91105143A CN1020051C CN 1020051 C CN1020051 C CN 1020051C CN 91105143 CN91105143 CN 91105143 CN 91105143 A CN91105143 A CN 91105143A CN 1020051 C CN1020051 C CN 1020051C
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Abstract
The present invention relates to a special video and Chinese character terminal. The present invention is realized by that a French MIB or M2 type western terminal is developed for a second time, and a video and Chinese character terminal card is added. The Chinese character card is composed of the circuits of a Chinese character library, an image controller, a video signal processor, a memory, etc. The Chinese character card is connected with the host board, the display and the keyboard of the western terminal by inserters. The characteristics of the original western terminal are maintained, and the functions of inputting, processing and displaying Chinese characters, inserting images, dynamically redefining character display, etc. are increased. The present invention conforms to the standards of the video technique systems of China, and can be largely used in video and character service networks in China.
Description
Visible image and Chinese character private terminal of the present invention is at French MIB or M
2Carry out secondary development on the type videotext terminal, increase a videotext Chinesizing card and whole software and constitute, belong to the data communication terminal equipment technical field.
Videotext communication (Vedeotex) is a kind of non verbal communication business that developed recently gets up, and is a kind of novel, open information service system.Utilize existing public telephone network and public packet switching network to the service of users' opening imformation, realize that the information resources of maximum magnitude are shared.Present France, Britain, Germany, Canada, Japan and other countries are in the world produced videotext terminal separately in a large number, and China does not still have available visible image and Chinese character private terminal.CN87.2.09835 provides a kind of character type Chinese character display card, personal computer is carried out secondary development, its Chinese character generator adopts two kinds of different Chinese character to show sign indicating number (international high-order set sign indicating number simultaneously, realize with hardware that the displacement international code) result is the ability that personal computer has processing and demonstration Chinese character.
The objective of the invention is to develop one and French MIB or M
2The Chinesizing card that type western language terminal is connected, this card links to each other with prototype through bus, thereby causes having invented a kind of visible image and Chinese character private terminal.
France MIB or M
2Type western language terminating machine, quantity is maximum in the world, ratio of performance to price height, small utility, but existing hardware can not be supported the function that Chinesizes, the allowing for expansion is arranged in the machine, by analysis and research, think this terminating machine can as the Chinesizing usefulness prototype, carry out secondary development in the above, the repertoire that keeps former western language terminal adds a videotext terminal Chinesizing card and whole software, with French MIB or M
2Type western language terminal development becomes and promptly meets Chinese videotex technology system standard and can import, handle, show Chinese character and embedded figure again, define the visible image and Chinese character terminal of figure again.
France MIB or M
2Type western language terminal, comprise motherboard (3), display (4), keyboard (2), scanning board (5) four major parts, add a videotext terminal Chinesizing card (1) by plug-in unit, be connected with keyboard (2), display (4), motherboard (3), scanning power supply plate (5), form a visible image and Chinese character private terminal.This Chinesizing card is made up of address decoder (6), address latch (7), (12), address extension device (8), Chinese character base (9), ternary latch (10), graphics controller (11), refresh memory (13), random access memory (14), program storage (15), video signal preprocessor logical circuits such as (16).Software is made up of Keysheet module (18), screen display module (19), modem module (20), peripheral hardware jack module (21), association's total module of the Chinese (17).Visible image and Chinese character private terminal after the exploitation, have stable performance, multiple functional, meet of the requirement of China's videotex service dictyosome system to terminal device.
Below in conjunction with description of drawings:
Fig. 1: visible image and Chinese character private terminal block diagram
Fig. 2: visible image and Chinese character private terminal Chinesizing card schematic diagram
Fig. 3: visible image and Chinese character private terminal general function module map
Fig. 4: the main program flow chart of visible image and Chinese character private terminal
Fig. 5: visible image and Chinese character private terminal keyboard input process flow diagram
Fig. 6: visible image and Chinese character private terminal keyboard handling procedure process flow diagram
Fig. 7: visible image and Chinese character private terminal DP display processor process flow diagram
Fig. 1: visible image and Chinese character private terminal block diagram
Visible image and Chinese character private terminal is by videotext Chinesizing card (1) and French MIB or M
2Type western language terminal constitutes.The western language terminal comprises keyboard (2), motherboard (3), display (4) and scanning power supply plate (5) four major parts again.
Keyboard (2) is interactive input equipment, by a series of keyswitches that are arranged in matrix form and nonencoded keyboard that code translator constitutes.Motherboard is equipped with single-chip microcomputer, modulator-demodular unit and interface circuit etc. on (3), and single-chip microcomputer is an INTEL series.Modulator-demodular unit adopts the modulation of frequency shift keying formula (FSK), meets the CCITTV.23 suggestion, and transmission rate is 7.5bit/s, and receiving velocity is 1200bit/s, and main transfer rate of paying channel has turn over function.Display (4) has been selected 9 cun black and white displays that cost is low, volume is little for use, eight grades of gray scales can be arranged, clearly display text and figure.Scanning power supply plate (5) is equipped with row, field-scanning circuit, video amplifier circuit and power supply.
Fig. 2: visible image and Chinese character private terminal Chinesizing card schematic diagram
Videotext Chinesizing card is made up of address decoder (6), address latch (7) (12), address extension device (8), Chinese character base (9), ternary latch (10), video signal preprocessor (16), graphics controller (11), refresh memory (13), random access memory (14), program storage logical circuits such as (15).Motherboard (3) links to each other with videotext Chinesizing card by address bus, data bus and control bus, decipher the address that the address decoder (6) of Chinesizing card is sent motherboard (3) here, for extender (8), ternary latch (10), graphics controller (11), random access memory (14), the chip select signal is provided, address latch (7) is sent to Chinese character base (9), random access memory (14), program storage (15) with the address signal that motherboard (3) comes; Ternary latch (10) is connected with keyboard (2), latchs the data of keyboard; Program storage (15) is application program, handling procedure, Hanzi inputing code, western language storehouse and the embedded figure storehouse etc. that are used for depositing terminal device.Single-chip microcomputer has 16 address wires, in order to realize whole locations of leading of Chinese character base, adds address extension device (8), adopts and expands body technique, realizes looking into of whole Chinese character base led; Random access memory (14) is the storer of terminal data.
Fig. 3: visible image and Chinese character private terminal general function module map
Visible image and Chinese character private terminal on function, is divided into 5 modules: Keysheet module (18), screen display module (19), modem module (20), peripheral hardware jack module (21), agreement top control module (17).
Keysheet module (18) is made up of a series of Input Softwares that are arranged in matrix form, it finishes polling, disappear quiver, keyboard decoding and Hanzi inputing code handle, in addition function key is handled.Screen display module (19) is made up of graphics controller (11), refresh memory (13), address latch (12), signal processor (16), display (4) and corresponding PaintShop, finishes the management to service rows, display field and Chinese character input domain; Indicate and call several character set, distant dress dynamically redefinable character set (DRCS); Finish reading and show to Chinese character, western language and embedded figure; Realization to cursor, color, font, add the control of attributes such as bottom line, flicker, concealment and complete capable, full frame and window.Modem module (20) is made up of logical circuits such as monolithic MODEM, line interface, transmission and reception control circuit, coupling mechanism, current limliting overvoltage protection and corresponding communication software.With PERCOM peripheral communication the time, controlled data transmit-receive form; Finish the foundation and the dismounting of communication line; The transmission of information and reception between opertaing device; The result makes accordingly and replying according to transmitting-receiving; Control modulator-demodular unit master pays the upset of channel speed and returns; And enabling or stop and the repeating transmission of information etc. according to communicating line quality decision communication control procedure.Peripheral hardware jack module (21) is made up of Peripheral Interface and corresponding peripheral hardware software, and the user connects printer by the peripheral hardware socket, carries out print screen, also can communicate with different speed and other peripheral hardware by it.Agreement top control module (17) is made up of single-chip microcomputer, ROM (read-only memory), random access memory logical circuits such as (14) and corresponding protocol management software.It cooperates initialization, scheduling keyboard module (18), screen display module (19), modem module (20) and the peripheral hardware jack module of finishing the complete machine each several part (21) by soft, hardware, they are cooperatively interacted, coordinate to finish function separately.
Fig. 4: visible image and Chinese character private terminal main program flow chart
Start, at first to single-chip microcomputer, CRTC graphic display control, buffer zones etc. carry out initialization, enter and promptly decide state, correlation parameter and set buffer zone are given put, judge that machine is self check or duty: if self check, the loop tester of this machine of execution, promptly under the control of keyboard, circulation shows the test picture page, and these picture pages are respectively by western language, Chinese character, embedded figure with dynamically define figure again and form.Can check literal, whether figure and various font, color, underscore, flicker, full attribute such as capable, full frame be normal, and compound keys that normally can be in accordance with regulations withdraws from test mode; If duty sees at first whether keyboard buffer has number, if number is arranged, just call the keyboard handling procedure, do corresponding Chinese and western languages and handle,, check whether the display buffer has number if keyboard buffer is empty, if any number, call DP display processor, do corresponding Chinese and western languages again and handle, reexamine keyboard buffer whether number is arranged otherwise return, there is number to do corresponding Chinese and western languages and handles, otherwise reexamine screen buffer ...Master routine is the loop program of a closure.
Fig. 5: visible image and Chinese character private terminal keyboard input process flow diagram
When operating personnel press any key, the I/O port of single-chip microcomputer, go up address decoder (6) for the Chinesizing card and send the address, after the decoding, hit program storer (15) and ternary latch (10), keyboard program in the calling program storer (15), the shake that produces during the cancel key contact is disturbed, identification is produced corresponding codes by button, and tabling look-up becomes the ASC11 sign indicating number, deposit ternary latch (10) in, check that then this sign indicating number is a function key? be that calling function key handling procedure is handled accordingly; If not, the content in the ternary latch (10) is inserted in the keyboard buffer.
Fig. 6: visible image and Chinese character private terminal keyboard handling procedure process flow diagram:
During the visible image and Chinese character terminal can be carried out, the western language input checked whether keyboard buffer has number, having number at first to differentiate is Chinese character or western language, if western language, declare shift still is the lower gear key, look into the upper and lower shelves of corresponding western language code table respectively, fill in and issue then and send buffer zone; If phonetic sign indicating number or stroke shape Chinese code declared in Chinese character, look into corresponding concordance list respectively, remove to look into code list of Hanzi according to concordance list and displacement again, find out the address of Chinese character base, fill out and draw the transmission buffer zone.Because this terminating machine has " this locality " and " online " two kinds of mode of operations, " this locality " pattern is directly to be presented at the content of keying on the screen; " online " mode of operation, the content of key entry can not directly be presented on the screen, but sends by circuit on the modulator-demodular unit.So declaring a stroke MODEM is closed loop or open loop,, on the screen of this machine, show the literal of input if closed loop is directly sent the code that sends buffer zone into send buffer and screen display buffer zone; If open loop is then taken out data by sending buffer zone, deliver to the P of single-chip microcomputer through data bus
0Mouthful, carry out and become string, add Qi Shiwei, check bit sum position of rest simultaneously, by serial delivery outlet P
3.1(TXD) send to circuit and get on, after receiving echo (echo) signal, deliver to send buffer, treated, on the screen of this machine, show.
Fig. 7: visible image and Chinese character private terminal DP display processor process flow diagram
Whether when the display buffer has when several, at first differentiating it is basic controlling collection (C
0) and parallel control collection (C
1) control character, if will carry out control corresponding symbol and handle; If not reexamining is embedded figure character (C
2) or dynamically redefinable character set (C
3)? in this way, then be correspondingly processed, as not being, declare western language or Chinese character again, Chinese character in this way, is reexamining it first byte of Chinese character? (Chinese character has two bytes), in this way, earlier it is delivered to the Chinese character temporary storage location, in this way second byte, after conversion process, find the appropriate address of Chinese character base, take out the dot matrix of Chinese character, deposit in the dynamic base, carry out font discrimination then, if normal font just enters screen buffer; Otherwise, call font varitron program, after inserting point transformation, send into screen buffer again, by the raster timing signal controlling of graphic display control (11), Chinese character dot matrix font signal warp is also become the serial light spot signal that string shift register (in CRTC) is converted into per 8 group, send into video signal preprocessor (16) with attribute signal, blanking signal and synchronizing signal, synthesize composite video signal, after amplifying synchronously, send into display (4), on screen, show.
In the videotex service net, special-purpose terminal consumption maximum, French MIB or M after the Chinesizing
2Type western language terminal belongs to special-purpose terminal, and it meets China's videotex service network technology system, inserts from telephone network, and expense is low, and convenient, database links to each other with system by the packet switching network, realizes the resource sharing in the wide scope.Stipulated unified retrieval mode (directly search, menu is searched and seek the opinion of and search) and unified display format in the editexte, thereby guaranteed to retrieve the content of hundreds and thousands of databases with a terminal.Therefore in the videotex service net consumption maximum be special-purpose terminal, the hold depth of the videotext Chinesizing special-purpose terminal of development is very big.
Claims (1)
1, a kind of visible image and Chinese character private terminal is to pass through address bus by French MIB or M2 type western language terminating machine, data bus, control bus and one are by address decoder (6), address latch (7) (12), address extension device (8), Chinese character base (9), ternary latch (10), graphics controller (11), refresh memory (13), random access memory (14), program storage (15), the Chinesizing card that video signal preprocessor (16) circuit is formed compositions that be connected, it is characterized in that: the signal that address decoder (6) is sent here motherboard (3) is deciphered and is extender (8), ternary latch (10), graphics controller (11), random access memory (14) provides the chip select signal; The address signal that address latch (7) is sent motherboard (3) here is sent to Chinese character base (9), random access memory (14), program storage (15); Ternary latch (10) latchs the data of keyboard; Program storage (15) is deposited application program, handling procedure, Hanzi inputing code, western language storehouse and embedded figure storehouse; Address extension device (8) adopts the expansion body technique that whole Chinese character base is searched; Random access memory (14) is stored terminal data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105143 CN1020051C (en) | 1991-07-31 | 1991-07-31 | Visible image and Chinese character private terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105143 CN1020051C (en) | 1991-07-31 | 1991-07-31 | Visible image and Chinese character private terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1059216A CN1059216A (en) | 1992-03-04 |
| CN1020051C true CN1020051C (en) | 1993-03-10 |
Family
ID=4907006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91105143 Expired - Fee Related CN1020051C (en) | 1991-07-31 | 1991-07-31 | Visible image and Chinese character private terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020051C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7075543B2 (en) * | 2003-07-08 | 2006-07-11 | Seiko Epson Corporation | Graphics controller providing flexible access to a graphics display device by a host |
| CN103247274B (en) * | 2013-03-28 | 2015-05-13 | 中国船舶重工集团公司第七二六研究所 | Method and system for chinesization display of fire protection controller |
-
1991
- 1991-07-31 CN CN 91105143 patent/CN1020051C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059216A (en) | 1992-03-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |