CN1018298B - Universal language display system - Google Patents

Abstract

To display a figurative language in response to plural input methods by generating a video display signal to a video terminal in response to the internal code display of an attribute and the internal code display of alphabets or ideograms. A processing means 26 acts to fetch alphabet characters shown by an internal code from a memory 44 in response to the keying of alphabet marks, to fetch the ideogram shown by the internal code from the memory 44 in response to the keying of the plural figurative marks and to fetch the attribute shown by the internal code from the memory 44 in response to the keying of the attribute. A video character generator 32 generates the video display signal to the video terminal 10 in response to the internal code display of the alphabet characters or the ideogram, and the internal code display of the attribute. Thus, the figurative language is displayed in response to the plural input methods.

Description

Universal language display system

The present invention relates to a kind ofly can on the video image display terminal, show the alphanumeric language, can show the computer system of ideographic language again.

Western language uses 26 Roman characters and 10 numerals, and the former can be combined into word, and the latter can be combined into number.Handling this alphanumeric language with the computing machine word processor has been conventional, and frequent degree is had no means of putting into words.

Various Far East language is made up of the ideograph of expression word or complete thought.The literal that a kind of typical Far East language contains is at least one ten thousand, as many as 50,000 is different.In same country, also usually there is more than a kind of written form using.For example, Chinese has classical form and recent model, and Japanese has the assumed name form of the hanzi form and the expression voice of pictograph.Also can more difficulty be arranged even design a kind of Computer Language Processing system that can only handle a certain Far East language than a kind of corresponding alphanumeric language system of design.Even use repeatedly key entry mode to import the largest system of a literal for having to, the size of keyboard also is the problem that needs are considered emphatically.

Having designed various input methods comes correct literal is translated in the keyboard input.For example, the radical formula is arranged, input methods such as speech type and phrase or character code formula for Chinese.Radical formula input method is formed a literal with the basic symbol on each keyboard key or " radical " as structural unit.Radical formula input method has many kinds of variants, for example, forms literal with the key entry of fixed number of times, forms literal and only with first radical or only form literal with first and last radical with the key entry of fixed number of times not.Great majority adopt the computer programming of these methods, are to make when can't determining to be which literal, just provide several literal, so that therefrom select.Pronunciation inputting method is based on the sounding of certain specific radical or phoneme; Computing machine is translated into phoneme a literal or is selected several possible literal.Phrase input method is based on literal word group, and these word groups can be set up by the user, and a given special code.The main application of phrase input method is to eliminate the monotonous work that input contains the repetition data set.The character code input method makes the user come input characters with the internal code of literal.This input method is slower than additive method usually, but it for maintain secrecy or as to be difficult to into the situation of word during no code table particularly useful.Should be noted that phrase and character code input method also can be applied to alphanumeric character.

Be input to the various input in the word processor except the multipleization language of many Far Eastern countries with certain language, when storage and transmission information, also used many kinds of internal codes.For example, the more employed internal codes of China have the Tel-Code(telegraphic code), Big-5, national standard code and 5550 codes.Though because these category codes of great majority meet the ISO(ISO (International Standards Organization)) standard can generally be discerned, and many computer systems are merely able to acceptance and handle a kind of code.

Therefore the purpose of this invention is to provide a kind of new and improved method and system, the video image terminal that is used for alphanumeric language and ideographic language shows.

Another object of the present invention provides a kind of computer system that can translate into ideographic language multiple internal code.

A further object of the invention provides a kind of can responding to various input, shows the computer system of various ideographic language.

The present invention is the method and system that a kind of video image terminal that can be used for alphanumeric character and ideograph shows.This system comprises a keyboard, storer, treating apparatus and a video text generator.Keyboard comprises that a plurality of existing alphanumeric patterns have the symbolic key of the pattern of expressing the meaning and one to be used for any one or all literal are set the sign key of sign again.Storer has the byte internal code of an alphanumeric character and sign thereof to represent to represent with the double byte internal code of an ideograph.Treating apparatus can be keyed in an alphanumeric symbol and respond, and extracts the alphanumeric character by the internal code representative from storer; It also can be keyed in the several times ideographic symbol and respond, and extracts the ideograph by the internal code representative from storer; It can also respond to once indicating to key in, and extracts the sign by the internal code representative from storer.The video text generator can be represented and the internal code of alphanumeric character and ideograph is represented to respond the internal code of sign, produce video display signal on the video image terminal.

Say that in more detail this system comprises a code cache device and a sign buffer.The internal code of code cache device store character literal represents that the internal code of sign buffer storage mark is represented.Each buffer all has the output of a byte.This system also comprises parallel by character character code and flag code passage, respectively the output of code cache device and sign buffer is connected on the video image terminal.

Fig. 1 is the block scheme according to the universal language display system of one of form of the present invention.

Fig. 2 is a keyboard layout, and it may form a part of the present invention.

Fig. 3 A to 3N represents the circuit diagram of some parts of selecting from system shown in Figure 1.

Fig. 4 A to 4K represents the circuit diagram of some parts of selecting from system shown in Figure 1.

Fig. 5 A to 5M represents the circuit diagram of some parts of selecting from system shown in Figure 1.

Fig. 6 A to 6l represents the circuit diagram of some parts of selecting from system shown in Figure 1.

Fig. 1 is illustrated in and shows alphanumeric character and ideograph on the video image terminal 10, and these characters and literal are encoded, so that they are sent to the block scheme of a system that goes in the principal computer 12.

This system comprises a keyboard 14, draws in more detail in Fig. 2.Keyboard 14 contains a plurality of symbolic keys 16, their existing alphanumeric patterns pattern of expressing the meaning again.For convenience of explanation, show English and Chinese symbol on the key 16.Yet the present invention is not limited to this bilingual, also is not limited to single alphanumeric language and ideographic language.Keyboard 16a represents letter " E " in the English pattern, represent radical " " " and phoneme " water " in the Chinese pattern.Each alphanumeric character is represented by the once key entry of a key 16.Otherwise ideographic symbol is the structural unit of ideograph, so in order to represent a literal often to need the combination of repeatedly keying in.But, some ideograph also might form with once keying in.

Keyboard 14 comprises sign key 18, and it sets a sign or feature to any one or all inputs with the character display literal.For example, sign can comprise underscore, and heavy period is set an alphanumeric character or ideograph etc.Keyboard 14 also has a key 20, is used for selecting the alphanumeric pattern or the pattern of expressing the meaning.

Get back to Fig. 1, the each key entry on 22 pairs of keyboards 14 of scrambler responds, and produces a signal.This signal just reflects the corresponding location of this key on keyboard 14 or the position code of position.

Typical situation is when " constructing " ideograph, more than a kind of method often to be arranged.For example, Chinese character can be constructed with radical formula input method.In this method, each Chinese character all is regarded as the combination of one or several radical, and each literal is all determined uniquely by the combination of predesignating.The invention provides more than a kind of input method of constructing ideograph.Can use a kind of " occupation " method for the skilled especially personnel of radical formula input method, maximum literal are all determined in each the radical combination that at this moment is input in the keyboard 14 uniquely.Yu(author is asked for an interview in discussion about " occupation " input method or twice key entry input method) " Some New Advancement in High Speed Two-Stroke Input System " (" some new developments of keying in the input system for twice at a high speed ", Proceedings-1987 International Conference On Chinese and Oriental Language Computing, 111(1987 Chinese and oriental language calculate international conference collection of thesis, 111).For not really skilled personnel, " non-professional " method will provide one or more possible literal to each effective radical combination.The user can select required literal from the literal that these provide then.

Pronunciation inputting method is determined with the pronunciation of literal.In the method, various phonic symbols are combined with authentic language.Owing to there is a more than literal to have identical or quite similar pronunciation, this method often can not be determined a literal uniquely.As the situation with " non-professional " radical formula input method, the present invention provides one or more possible literal to every kind of effective phonotactics, and the user can therefrom select.

The present invention also provides a kind of input method, and its Chinese words can be imported by their internal code.Chinese character is had multiple internal code, comprises the Tel-Code(telegraphic code), Big-5, national standard code and 5550 codes.In these codes each all has the binary representation mode of a double byte to each literal.If the code of known a certain specific character can be imported on keyboard 14 with its equivalent hexadecimal digit.

As the part of subsystem, provide selecting arrangement to the character input method of expressing the meaning.This device comprises the one or more keys 24 on the keyboard 14 that links to each other with scrambler 22, and scrambler 22 sends a signal to CPU (central processing unit) 26.

Referring again to block scheme shown in Figure 1, this system comprises and is used for the treating apparatus of processing signals.This treating apparatus comprises a CPU (central processing unit) 26 and program read-only memory ROM28, a plurality of internal codes that table read only memory ROM 30(has wherein stored various alphanumeric characters and ideograph are represented), the device 34 of video text generator 32 and control of video character generator 32.

One receives from scrambler 22 by interface adapter (V1A) 36, the key location data of serial code.After receiving this data, adapter 36 promptly sends a look-at-me to CPU (central processing unit) 26, shows to receive key location data.Once receive, data promptly are sent to CPU (central processing unit) 26 by data channel 38 from adapter 36.Dispose a driver 40 in the data channel 38 between adapter 36 and CPU (central processing unit) 26, be used for strengthening the signal by the there.

Character generator 32 comprises a screen cache device 42 that is made of code cache device 44 and sign buffer 46.The internal code of the character literal that 44 storages of code cache device need show on screen.Storage is corresponding to the internal code of the sign that is stored in the character literal code in the code cache device 44 in the sign buffer 46.Video image terminal 10 has a matrix of display elements on its screen, each character literal of having encoded in the screen cache device 42 and the memory location of sign are all corresponding to separately display unit.In a preferred concrete device, screen cache device 42 can keep showing two code and flag code.But, can adopt bigger memory capacity if necessary.

One of characteristics of the present invention are, ideograph is to show in two adjacent display units, and alphanumeric character shows in single display unit.The purpose of doing like this is to be generally the desired high-resolution of ideograph in order to provide.The internal code of ideograph generally also is two bytes.Another characteristics of the present invention are, code and sign buffer 44 and 46 all are the byte buffers, and also being each buffer receives, stores and transmit data in the mode of every next byte.Compare with the buffer of handling more data simultaneously, compare simple, also relatively more cheap like this.Therefore the code of expressing the meaning of each double byte is stored on the position adjacent in code cache device 44.Two corresponding signs in the sign buffer 46 have comprised the identifier of these two bytes being used as a literal.

Character generator 32 also comprises parallel character code and flag code passage 48 and 50, and they are connected to video image terminal 10 to the output of code cache device 44 and sign buffer 46 respectively.Character code passage 48 comprises d type flip flop 52 and 54, multi-channel switcher 56, graphic memory 58, shift register 60 and the programmable array logic (VideoPAL, video line-by-line inversion device) 62 that is used for video image terminal 10.The output of code cache device 44 is received in the input of trigger 52.The output of trigger 52 is received in the input of trigger 54, and receives by multi-channel switcher 56 in the input of graphic memory 58.The output of trigger 54 is also received in the input of graphic memory 58 by multi-channel switcher 56.Graphic memory 58 comprises three eight ROM(ROM (read-only memory)) chip 58a, 58b and 58c, the character and graphic output that is used for producing one 24 bit, for an ideograph, a video line is represented in this output.

For the capable output of alphanumeric video is 12 bits, so only need low 12 in the rom chip." graphic memory 58 and line output by shift register 60 receive and convert to serial bit stream, be sent to programmable array logic 62.

Character generator 32 also comprises a dynamic RAM DRAM74.DRAM74 is connected between multi-channel switcher 56 and the shift register 60, and temporary transient graph data storage is provided.For example, the figure of the ideograph that can't obtain or other graphic presentation can be set up in DRAM 74 and store.For the visit of the literal of such foundation, can not reaching by the regulation internal code with value.

Flag code passage 50 comprises d type flip flop 64 and 66, sign logic controller 68 and programmable array logic 62.The output of sign buffer 46 is connected to the input of trigger 64, the output of trigger 64 is connected to the input of trigger 66, the output of trigger 66 is connected to the input of sign logic controller 68, and the output of sign logic controller 68 is connected to the input of programmable array logic 62.In programmable array logic 62, the output of sign logic controller 68 combines with the serial binary letter signal, and its serial output is sent to video image terminal 10, realizes that literal shows.

Data path 38 also is connected between the output and asynchronous communication interface adapter (AC1A) 70 of graphic memory 58, and data are sent to printer 76.In a preferred concrete device, adapter 70 is 65SC51P-2 chips.

During operation, a program (it makes system initialization and explains the key position code according to operator scheme and input method) is loaded onto among the program read-only memory ROM28.For each alphanumeric character, the internal code of each ideograph and each sign is represented to be loaded onto among the table read only memory ROM 30.Usually, only load ASC11(A Sika ASCII for alphanumeric character and sign) code.Yet, but load a plurality of internal codes for each ideograph.For example, can load the Tel-Code(telegraphic code for Chinese), Big-5, national standard code and 5550 codes.After giving system's energized and initialization, utilize the key 20 on the keyboard 14 to set the alphanumeric pattern or the pattern of expressing the meaning.Program among the ROM28 will be interpreted as the alphanumeric pattern or the pattern of expressing the meaning to the position code from key 20 according to the mode initialization situation.

At first consider data path management to alphanumeric character.Because various input methods generally are only applicable to the input of ideograph, so do not need to select input method in this case.When a symbolic key that is in the alphanumeric pattern is hit following time, scrambler 22 sends the location code data signal of a serial to general-purpose interface adapter 36.As the response to this data-signal, adapter 36 sends a look-at-me to CPU (central processing unit) 26, and CPU (central processing unit) 26 is by reading in this data aggregation to one internal register then.Central processing unit CPU 26 is explained this position code by carrying out the program among the ROM28, and extracts appropriate ASC11 internal code from table ROM30.In brief, this treating apparatus (it comprises CPU (central processing unit) 26 and program ROM 28) is to extract internal code as to the alphanumeric pattern with from the response of the key signals of scrambler 22.Alphanumeric character is by the coded representation of a byte (8 bit), and this code is exactly the address that is stored in the video dot pattern in the graphic memory 58.

This internal code for alphanumeric character is stored in the code cache device 44, and its position is corresponding to a unit of matrix of display elements on the video image terminal 10.Code cache device 44 is parts of video text generator 32, and it produces a video image terminal shows signal in output place of programmable array logic 62.This shows signal is as the response that is stored in the character internal code in the code cache device 44 and is stored in sign internal code in the sign buffer 46 (following discuss again) is produced.

Video text generator 32 is subjected to the control of cathode ray tube controller (CRTC) 34.For fear of the bus contention problem, CPU (central processing unit) 26 and cathode ray tube controller 34 use Phi 1/Phi 2 alternate modes, this mode can make CPU (central processing unit) 26 carry out control in the half cycle of time cycle, and in another half cycle of time cycle, carry out control by cathode ray tube controller 34.When controller 34 was carried out control, the character internal code in the code cache device 44 passed to trigger 52.In the next clock period, this code device 54 that is triggered latchs, and the character late code is passing admission passage 48 to the process of trigger 52 from buffer 44.The code that appears at multi-channel switcher 56 and graphic memory 58 places will be the output of trigger 54 and trigger 52.But, alphanumeric character is discerned by a discrimination bit.If the alphanumeric identifier, then the character and graphic in the graphic memory 58 will be not respond to the output of trigger 52.

Each character graphics that is stored in the graphic memory 58 all is made up of many dot pattern code lines, and it has constituted the dot pattern of a display unit on the screen of video image terminal 10.Be stored in specific font and font that the figure in the graphic memory 58 depends on the size of display unit and needs to show on video image terminal 10.In a preferred concrete device, for the display unit size of an alphanumeric character be 13 wide, 29 are high.When leaving the white conduct of 1 row and 5 line spaces interval, each the alphanumeric dot pattern that is stored in the graphic memory 58 is 12 * 24.Like this, 58 pairs of alphanumeric dot patterns of graphic memory are output as 12 parallel bits.These bit signals pass to shift register 60, and are moved out to the programmable array logic 62 from this register serial.Programmable array logic 62 had both been accepted also accepted flag bit signal of character bit signal, and provided video output signals to video image terminal 10.The output of graphic memory 58 also can be used for providing graph data to printer 76, and its address obtains from CPU (central processing unit) by address bus 72, and its graph data obtains from graphic memory 58 by data path 38.

Secondly consider the data path management of sign.Can give one or several sign for each literal.When hitting next one sign key, scrambler 22 sends the location code data signal of a serial to general-purpose interface adapter 36.As the response to this signal, adapter 36 sends a look-at-me to CPU26, and CPU26 is by reading this data to this data aggregation to internal register then.CPU26 will explain this position code by the program of carrying out among the ROM28, and extract appropriate ASC11 internal code from table ROM30.Sign is by the coded representation of a byte (8 bit), and wherein each can represent certain specific sign.For example, underscore can be represented in a certain position, and another one can be represented mark of emphasis or the like.

This internal code is stored in the sign buffer 46, and a unit of the matrix of display elements on its position and the video image terminal 10 is corresponding.Sign buffer 46 is parts of video text generator 32, and it produces a video image terminal shows signal in output place of programmable array logic 62.This shows signal is as producing being stored in character, the literal internal code in the code cache device 44 and being stored in the response that indicates the sign internal code in the buffer 46.

As previously mentioned, video text generator 32 is subjected to the control of cathode ray tube controller 34.When controller 34 was carried out control, the sign internal code in the sign buffer 46 passed to trigger 64.In the next clock period, this code device 66 that is triggered latchs, and next flag code discharges admission passages 50 because of being buffered device 46, and biography is to trigger 64.In back clock period again, first flag code is indicated, and control logic circuit 68 receives, and the latter translates into a signal to flag code, delivers to programmable array logic 62.This signal provides timing to programmable array logic 62, and synchronous and graph data makes PAL 62 be had a synchronous literal/marking signal to send in the video image terminal 10 and goes.For example, want underscore if flag code is specified, then slave controller 68 signal that sends to programmable array logic 62 must be defined in the bottom line of literal of appointment and insert delegation's point.If flag code is specified the image want a reversing, then slave controller 68 signal that sends to programmable array logic 62 must make the graph data reversing that receives from shift register 60.

Once more, consider the management of the data path of ideograph.After the selected pattern of expressing the meaning, the user utilizes key 24(to see Fig. 2) set an input method.When a symbolic key that works in the pattern of expressing the meaning is hit following time, scrambler 22 is by the described the sort of mode of alphanumeric pattern is worked.That is to say that scrambler 22 sends the location code data signal of a serial to general-purpose interface adapter 36.As the response to this data-signal, adapter 36 sends a look-at-me to CPU (central processing unit) 26, and CPU (central processing unit) 26 is by reading this data to data aggregation to internal register then.By carrying out the program among the ROM28, CPU26 will explain this position code according to pattern and input method, and extract one or several ideograph with predetermined internal code form from table ROM30.Although this attached invention has any and the characteristic that principal computer communicates in can enough many internal codes, always be to use previously selected wherein a kind of internal code to produce the video demonstration.In a preferred concrete device, this code is a Tel Codc(telegraphic code).Ideograph is by the representative of double byte (upper byte, a low byte) code, and it is the address that is stored in the video dot pattern in the graphic memory 58.

For the key entry each time of ideographic symbol, the program that is stored among the journey ROM28 will produce one or several character code.As noted earlier,, make a sound at once in that one or many is keyed in, all stipulate the agreement of the one or several literal of demonstration for each input method.It is this that to produce fixing on approximately in the present technique field of one or more literal according to input method and key entry situation be well-known.The Chinese written language code (CCC11) that is used for message exchange, the Chinese language study institute (CCR1) in Taiwan, Beijing academy of sciences, Kyoto Univ Japan and Nippon Standard research institute (JIS) have delivered some basic references.Model's publication has: publication No.JI, SG6226(JIS) and " A Comparative Study of Romanization System " (" comparative studies of Latinize system ") of describing pronunciation inputting method standard (the Phonetic Input Method Standards) (CCR1).This back one reference is the standard of Chinese input method.Ask for an interview " Some New Advancement In High Speed Two-Stroke Chinese Input system " (" some new developments of keying in the Chinese input system for twice at a high speed ") of Yu about the discussion situation of " occupation " input method of twice key entry, Proceedings of 1987 International Conference on Chinese Information Processing, 111(1987 Chinese information processing international conference collection of thesis, 111).Another piece published by CCC11 the reference that various input methods propose standard code, and the translation of its title is " Chinese Character Code Translation Table " (" Chinese written language code translation table ") in May, 1987.

Provide the input method of a more than possible ideograph for those, native system has kept a part of video image terminal diaplay unit matrix, is used for showing these literal.The some means that are used for selecting in these literal also are provided.Implementation method is its part as firmware preferably, is used as appearing at replying of prompt on the video image terminal 10 to utilize setting key on the keyboard 14 to select desired literal.

The internal code of selected ideograph is stored on the adjacent position in the code cache device 44, and the adjacent cells of the matrix of display elements on these positions and the video image terminal 10 is corresponding.As noted earlier, CPU (central processing unit) 26 and cathode ray tube controller 34 use Phi 1/Phi 2 alternate modes, this mode can make CPU (central processing unit) 26 carry out control in the half cycle of time cycle, and carries out control by cathode ray tube controller 34 in another half cycle of time cycle.When controller 34 was carried out control, first byte (low byte) of the double byte ideograph internal code in the code cache device 44 was sent to trigger 52.In the next clock period, this low byte device 54 that is triggered latchs, and second byte (upper byte) admission passage 48 of character code is followed associated low byte, passes to trigger 52 from buffer 44 then.The code that appears on multi-channel switcher 56 and the graphic memory 58 will be the output of trigger 54 and trigger 52.By this way, the express the meaning upper byte and the low byte of code arrives on the figure read only memory ROM 58 basically simultaneously.In other words, the ideograph code that can obtain whole double byte comes the Chinese written language figure among the figure ROM58 is conducted interviews.

Each the ideograph figure that is stored in the graphic memory 58 all is made up of a plurality of dot pattern code lines, and it has constituted the dual-display unit dot matrix figure on video image terminal 10 screens.Be stored in specific font or font that the figure in the graphic memory 58 depends on the size of display unit and needs to show on video image terminal 10.In a preferred concrete device, the dual-display unit size of ideograph be 26 wide and 29 high.When leaving two row and the five-element's blank as the interval, each dot pattern of expressing the meaning that is stored in the graphic memory 58 all is 24 * 24.Like this, graphic memory 58 is 24 parallel bits (24 groups of such parallel bits have constituted an ideograph) of representing a display line to the figure output of expressing the meaning of each literal.These bit signals are sent to shift register 60, and are moved out to programmable array logic 62 from this register serial.Programmable array logic 62 had both been accepted also accepted flag bit signal of literal bit signal, and provided video output signals to video image terminal 10.

Table ROM30 comprises that to each ideograph many internal codes represent.As noted, some internal codes of Chinese comprise the Tel-Code(telegraphic code), Big-5, national standard code and 5550 codes.Native system provides selects a certain internal code, so that be transported to the means of going in the principal computer 12.Implementation method is its part as firmware preferably, is used as appearing at replying of prompt on the video image terminal 10 to utilize setting key on the keyboard 14 to select internal code.But, if there is abundant key then might permanently compose to one or several key to select the function of internal code on the keyboard 14 for utilizing.As noted, for some input method of expressing the meaning, several literal of selective usefulness appear at the video image terminal and show, take the part of matrix of display elements.These literal are not sent in the principal computer and go, and just are stored in individually in the appropriate location in the code cache device 44.But, word is once selecting, and CPU26 promptly represents from the selected internal code that table ROM30 extracts that word, and this code sent in the principal computer in 12 goes.Principal computer 12 receives, stores and sends internal code in a usual manner.

Fig. 3 A to 3N, 4A to 4K, 5A to 5M and 6A to 61 have provided the detailed circuit diagram according to a kind of form of the present invention.Fig. 3 A to 3N(they by locus shown in Figure 3 assembling, Fig. 3 can find on that one page of Fig. 3 N) show CPU26, cathode ray tube controller 34, the details between screen cache device 42 and the shift register 60 and be connected to each other relation.Fig. 3 A, 3E, 3I and 3M show many DRAM memory devices 74, and they provide temporary transient depositing (the graph data line represents that with PD0 to PD23 the address wire of DRAM is represented with DA0 to DA7) to graph data.Shown in concrete device in, each DRAM device all is a 4464-10DRAM chip.Fig. 3 A also shows a character and graphic delivery device 82, is used for a character and graphic delivery to the demonstration of video image terminal.In a preferred concrete device, delivery device 82 is 74S195 chips.Fig. 3 E, 3I and 3M also show shift register 60a to 60e, and they receive the graph data (seeing Fig. 2,6A, 6B, 6D and 6E) from figure ROM58, and locate serial in QH outlet (the 13rd pin) and shift out.Shift register 60a, 60b and 60e(Fig. 3 E and 3I) utilize shift register 60c to go up the graph data that the serial data of exporting is handled ideograph at QH1 line (the 13rd pin).Shift register 60d and 60e(Fig. 3 I and 3M) utilize shift register 60e to go up the graph data that the serial data of exporting is handled alphanumeric character at QH2 line (the 13rd pin).In a preferred concrete device, each shift register 60 all is the 74HCT166 chip.

Fig. 3 B illustrates program ROM chip 28 and data line D0 to D7 and address wire A0 to A14.As previously mentioned, the program ROM chip is closely connected with CPU26, and contains system program.In a preferred concrete device, they all are 27256/512 chips.Fig. 3 F and 3J illustrate the table rom chip 30 of storage alphanumeric character and ideograph.Obviously, bigger if desired memory capacity can add in addition and put some table rom chips.In a preferred concrete device, table ROM adopts 27256/512 chip.

Fig. 3 C illustrates CPU26, and it is the 65C02 microprocessor chip in a kind of preferred device.One of characteristics of the present invention are that these processor chips are a kind of eight chips, also are the data (data line D0 to D7) that it once can handle a byte.This all will save dimensionally with in the cost than 16 of uses or bigger chip.Another characteristics are that this chip adopts the CMOS logic element that can improve reliability and reduce power consumption.Driver 40 is equipped with on data bus road 38, and address bus 72 is equipped with driver 41.

Fig. 3 D illustrates cathode ray tube controller 34, and it is a 6845EA CRT controller chip in a preferred concrete device.Memory address line MA0 to MA11 is used for screen cache device 42 is conducted interviews.Fig. 3 H illustrates multi-channel switcher 84, and it switches address wire A0 to A11 and the address wire M0 to M11 that comes self-controller 34 from CPU26.They are 74HCT157 chips in a preferred device.Fig. 3 H also illustrates code cache device 44 and sign buffer 46, and they all are the TC5563-10 chips.Buffer 44 and 46 can be accessed by screen cache device address wire SA0 to SA11, and these address wires are connected with 46 buffer 44 with multi-channel switcher 84.Data are by data port D0 to D7 input and output.

Fig. 3 G and 3K illustrate many buffers 86, and they receive graph data by line PD0 to PD23, and by line C0 to C7 to driver 40(Fig. 3 C) provide and line output, cause D7 by line D0 and carry character and graphic data (Fig. 1 and 4H) to printer 76.In a preferred concrete device, they are 74HCT245 chips.Fig. 3 G also shows timing circuit 102, and it provides timing signal RES to CPU26 and CRTC34.In a preferred concrete device, timing circuit 102 is SE555 chips.This figure also shows demoder 104, is used for selecting some table ROM30.Demoder 104 is 74HCT138 chips in a preferred concrete device.

Fig. 3 L illustrates I/O (I/O) PAL(line-by-line inversion circuit) 88; It is a 16L8A programmable matrix column logic circuitry chip in a preferred concrete device.I/O PAL88 makes CPU26 directly to get the I/O device and deposits, is exactly memory device as them.I/O PAL88 does not draw in Fig. 1, but on the function it between CPU26 and each I/O device.

Fig. 4 A to Fig. 4 K is assembled together by spatial relationship shown in Figure 4, and Fig. 4 can find on that one page of Fig. 4 D.Fig. 4 A to Fig. 4 K illustrates the I/O element of subsystem.Fig. 4 A illustrates asynchronous communication interface adapter (ACIA) 70, and it provides interface for transmitting data to principal computer 12 and receiving data from principal computer 12.Adapter 70 is 65SC51P-2 chips.Fig. 4 B illustrates the system interface to principal computer 12.Element J3 can be the RS232 connector of a routine.Fig. 4 C illustrates buffer/line drive 96 and 97 and latch 98.In a preferred concrete device, buffer/line drive 96 is 74HCT244 chips, and buffer/line drive 97 is 74HCT367 chips, and latch 98 is 74HCT273 chips.Fig. 4 E illustrates second or auxiliary asynchronous communication interface adapter 70a, and it provides an interface (seeing Fig. 1 and Fig. 4 H) between data bus 38 and printer 76, be transferred in the printer 76 with being used for a data serial.Fig. 4 G illustrates buffer 90 and the trigger 99 between data bus 38 and printer 76.In a preferred concrete device, buffer 90 is 74LS374 chips, and trigger 99 is 74HCT139 chips.Also show a multi-channel switcher 100 among the figure, in a preferred concrete device, it is a 74HCT138 chip.Fig. 4 H illustrates printer 76.Element J4 can be the RS232 connector of a routine.

Fig. 4 J illustrates general-purpose interface adapter 36, and it provides interface for the key entry data that receive from the scrambler on the keyboard 14 22.Adapter 36 is 65SC22P-3 chips.Adapter 36 has also played parallel/serial and serial shift register.Line PA0 to PA7 and PB0 to PB7 are two the 8 two-way I/O ports of bit.By the V1A(general-purpose interface adapter) 36 controls that received and graph data be sent to auxiliary AC1A(asynchronous communication interface adapter by line D0 to D7) on the 70a, and be sent to printer 76 therefrom again.Fig. 4 K illustrates keyboard 14 and scrambler 22, and the latter is connected with adapter 36 by one 4 line plug J5.Receive serial data by the 4th pin from scrambler 22, serial data is sent into scrambler 22 by the 2nd pin.

Fig. 5 A to Fig. 5 M is assembled together according to spatial relationship shown in Figure 5, and Fig. 5 can find on that one page of Fig. 5 M.Fig. 5 A to Fig. 5 M illustrates the details according to literal of the present invention and flag code passage 48 and 50.Fig. 5 A illustrates d type flip flop 52, and it is by line C0 to C7, and whenever next byte ground receives data from code cache device 44.The bus 80 that comprises line M1 to M8 the storage address data by driver 81(Fig. 5 B) be sent in each storage component part so that carry out the reading and writing operation.In a preferred concrete device, driver 81 is 74HCT244 chips.Fig. 5 B illustrates d type flip flop 54, and its slave flipflop 52 receives data, and G0 to G7 exports it by line.The data that appear on the delivery outlet Q2 to Q6 of trigger 52 also will occur among the online G11 to G15.Line G11 to G15 is inoperative for alphanumeric character, but they are parts of upper byte for ideograph.Also need other three lines (G8 to G10) for upper byte.Yet, for the demonstration of expressing the meaning, being on the video image terminal between two adjacent display cells, normally empty interval location also must be accessed.Data bit on the line G8 to G10 just is used for this purpose, and they are before line G11 to G15 merges to bus 94 (Fig. 5 B and Fig. 5 F), by figure PAL 68b(Fig. 5 E) be connected on the G0G2 of input port.

Fig. 5 C illustrates video image terminal 10 and serial data incoming line V1D(the 3rd pin).

Fig. 5 D and 5H illustrate multi-channel switcher chip 56, it receives from the literal internal code of passage 48 or from the CRTC(cathode ray tube controller by the incoming line of literal internal code or internal code) 34 internal code, and this code sent to line PA0 to PA19.This makes that certain special character or the phrase that are stored among the DRAM74 can be by the CRTC34 direct accesses.Line PA0 to PA7 is used for the alphanumeric character code, line PA0 to PA13 and PA19 are used for the ideograph code, and line PA14 to PA18 is used for setting the line number (we remember that according to a kind of form of the present invention, each word has one 24 dot pattern) of each literal.

Fig. 5 E, 5F and 5G illustrate the details of flag code passage 50.The flag code data are passed through line D0 to D7 from sign buffer 46 every next bytes ground admission passage 50(Fig. 1 and 3H).In a preferred concrete device, two d type flip flops 64 of polyphone and 66 all are the 74HCT374 chips mutually.D type flip flop 68a(Fig. 5 F) sign control logic circuit 68(sees Fig. 1) a part, on its input port D0 to D7, receive output signal from d type flip flop 66, AND gate 68d, figure PAL68b and timing PAL68c.Figure PAL68b, timing PAL68c and AND gate 68d have also formed a part of the sign control logic circuit 68 among Fig. 1.In a preferred concrete device, figure PAL68b is a 16L8A high speed, eight, the 16 AND-OR INVERTER gate arrays of importing.Timing PAL68c is the AND-OR INVERTER gate array of eight of 16L8B, 16 inputs.Fig. 5 G illustrates video PAL62, it receives the flag information from sign logic control circuit 68, and receives serial ideograph code data and alphanumeric character code data (Fig. 3 E, 3I and 3M) from shift register 60 on input port QH1 and QH2 respectively.Video PAL62 sends serial video signal (the 5th pin) (Fig. 5 c) to video image terminal 10.In a preferred concrete device, PAL62 is a 20L8E programmable array logic chip.

Fig. 5 I and 5J illustrate some additional control logic circuits that are used for auxiliary equipment.Fig. 5 I illustrates storer PAL106, in a preferred concrete device it be a 20L8A at a high speed, eight, 20 inputs deposit the AND-OR INVERTER gate array.On function, the PAL106 position is between CPU26 and program ROM 28/ table ROM30.Fig. 5 J illustrates figure PAL108, in a preferred concrete device it be a 20L8A at a high speed, eight, 20 inputs deposit the AND-OR INVERTER gate array.On function, the PAL108 position is between CPU26 and figure ROM58.Fig. 5 L and 5M illustrate a multi-channel switcher 92, and it is transferred to (Fig. 1,3A, 3E, 3I and 3M) among the DRAM74 to data.

Fig. 6 A to 6I is assembled together according to spatial relationship shown in Figure 6, and Fig. 6 can find on that one page of Fig. 6 G.Fig. 6 A to 6I illustrates the details of graphic memory 58.Fig. 6 A and 6B illustrate figure ROM58a, 58b and 58c, and they all are 62304 chips in a preferred concrete device.Each chip all passes through input port A0 to A18 and is accessed, is that unit comes output data by delivery outlet D0 to D7 with a byte.Fig. 6 D and 6E illustrate each additional figure ROM, and they can use together with figure ROM58a to 58c, for the literal that adds provides memory capacity.Fig. 6 C and 6F illustrate graphics addresses line and graph data line respectively.

Claims (2)

1, a kind of system that is used for the video image terminal demonstration of alphanumeric character and ideograph, comprise: an a plurality of keyboard (14) that had not only had the alphanumeric pattern but also had the symbolic key (16) of the pattern of expressing the meaning, one is used for selecting a kind of mode selecting key (20) from described two kinds of patterns, a sign key (18) that is used for any literal in described alphanumeric character and the ideograph is set sign, and at least one is used for described ideograph is selected a kind of method options button (24) of input method; One has the byte internal code to alphanumeric character with sign and represents, ideograph is had the storer (30) that the double byte internal code is represented; An energy is keyed in alphanumeric symbol and is responded, from described storer (30), extract the alphanumeric character that described internal code is represented, to repeatedly ideographic symbol key entry and method select key entry to respond, from described storer (30), extract an ideograph of representing by described internal code, and sign keyed in respond, the treating apparatus (26) of the sign that one of extraction is represented by described internal code from described storer (30); And energy is represented the described internal code of described sign and the described internal code of described alphanumeric character or ideograph is represented to respond, go up the video text generator (32) that produces a video display signal in described video image terminal (10), wherein, described video text generator (32) comprises a code cache device (44) and a sign buffer (42), the described internal code of the described literal of described code cache device (44) storage is represented, and the described internal code of the described sign of described sign buffer (42) storage represents that each buffer all has the output of a byte; It also comprises the character code and the flag code passage (48 of a parallel byte wide, 50), they are connected to the output of described code cache device (42) and sign buffer (44) on the described video image terminal (10) respectively, and, described first passage (48) comprises first and second trigger devices (52,54), the output of described first trigger device (52) is connected with an input of a graphics memory device (58) and described second trigger device (54), the output of described second trigger device (54) is connected with described graphics memory device (58), described second channel (50) comprises third and fourth trigger device (64,66), one output of described the 3rd trigger device (64) is connected with an input of described the 4th trigger device (66), the output of described the 4th trigger device (66) is connected with sign logic controller device (68), and the output of the output of described graphics memory device (58) and described sign logic controller device (68) interconnects to be used to control described video image terminal (10).

2,, it is characterized in that described storer (30) comprises by the device of selecting described second internal code for use a plurality of second internal codes of described ideograph are represented according to the system of claim 1; Its feature also has, described treating apparatus (26) can respond to described ideograph, from described storer (30), extract described second internal code of selecting of described ideograph, and the described internal code of selecting is sent in the principal computer (12).

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