US3854130A - Polychromatic graphic visual display and control system assembly - Google Patents

Polychromatic graphic visual display and control system assembly Download PDF

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US3854130A
US3854130A US00361493A US36149373A US3854130A US 3854130 A US3854130 A US 3854130A US 00361493 A US00361493 A US 00361493A US 36149373 A US36149373 A US 36149373A US 3854130 A US3854130 A US 3854130A
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color
address
memory means
data
traces
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P Ligocki
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Alcatel CIT SA
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Priority claimed from FR7231146A external-priority patent/FR2198674A6/fr
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/22—Producing cursor lines and indicia by electronic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/062—Cathode-ray tube displays or other two dimensional or three-dimensional displays in which different colours are used

Definitions

  • ABSTRACT Polychromatic visual display and control system assembly characterized by a main memory receiving graphic data corresponding to traces of various colors and/or various color portions to be displayed on a polychromatic cathode tube, and a selection system for sequentially selecting one of the various colors and for controlling the read-out from the main memory of all the data corresponding to the selected color such that the display of the traces and/0r portions of the traces of each of the various colors is enabled in a sequential manner to form a composite display of the traces of various colors.
  • Known devices enabling such results generally comprise a polychromatic cathode tube whose screen is suitable for receiving traces of several colors, these traces being renewed in successive cycles;
  • a main memory comprising a memory block, an address register and an output register, from which are extracted the graphical data received from a calculator or computer (this data is recorded by the memory block and classified according to its address in that block and it concerns the directing parameters and the color of each vector forming a part of the polychromatic traces);
  • a data processing means or element for enabling the generation of traces on the screen of the cathode tube 'in accordance with the output register of the main memory
  • a vector generator controlled by the data processing element and suitable for affecting the deflection of the cathode beam so as to make traces appear on the screen
  • the vector generator is connected with a character generator enabling characters to be made to appear on the screen
  • the polychromatic visual display assembly is equipped with a cathodic penetration tube which enables a polychromatic adding synthesis, controlled by the energy in the electrons of the beam. That is, by switching the acceleration voltage of the electrons, the color on the screen is changed.
  • Such voltage switching requires high power, for example, with a conventional switching device,-the average power dissipated is on the order of 100 watts for a cathode tube having a diameter of 40 centimeters and with a switching time not exceeding a millisecond.
  • the programming requirement is, when analized, a very serious matter. In the first place, it makes the rearranging and transferring of a new visual display program compulsory for the least change in color of a simple vector of the traces, since the place of each vector in the main memory depends on its color. If the link with the computer has a low output, the operator must, wait a long time for the complete message to be transmitted. What is more serious is that the rearranging requires a great amount of work by the calculator.
  • performing graphic systems generally enable the simultaneous display of several pictures.
  • the memory, the vector generator, the character generator and the connected circuits are common and used on a time-sharing basis.
  • the four pictures are traced successively, extinguishing, for each, the beams of the screens which are not concerned.
  • the program requirement for grouping together according to color, necessitates that with multiscreen systems, the four pictures are dissociated and that at the least change made to oneof the pictures, the complete message of the four pictures must be reorganized by the computer and transferred to the assembly.
  • a programming facility afforded to known assemblies is the subprogram call instruction by means of which a picture element capable of being repeated needs to be written only once, in a corner of the memory, from where it may be called through the main program. It is quite evident that the sorting out according to color requirement prevents any change in color within a sub-program. These sub-programs must be written in an achromatic way and will compulsorily be visually displayed in monochromatic form.
  • a known device enables very fast switching without permanent power dissipation to be ensured.
  • the duration of the color changes may thus be reduced to 50 microseconds.
  • that solution is satisfactory and enables the color to be treated as a variably selected parameter, in the same way as the brightness of the traces, for example.
  • one requirement limits at present, the number of color changes allowed per picture.
  • Technological imperatives limit the average power exchanged between the color switching device and the reactive charge which the anode of thecathode tube represents. In present technology, that limit is reached at color changes per cycle of traces and per screen (the screens not concerned remaining at rest). That this solution it is not only necessary to record a list for the sorting out of the vectors according to color, but moreover, it is necessary to:
  • each isochromatic element must be recorded in the form of an achromatic subprogram and the main program then takes the form of a list of sub-programs, each being preceded by the indication of its color. If there are four distinct colors, these requirements then being satisfied, the main program must. be read four times in succession, by cycle of traces, that is, calling only the sub-programs which are in the processed color.
  • a polychromatic graphic visual display assembly comprising:
  • a polychromatic cathode tube whose screen is suitable for receiving traces having portions of various colors, these traces being renewed in successive cycles;
  • a main memory comprising a memory block, an address register and an output register from which the graphic data received from a computer are extracted, the main memory being suitable, for each portion of traces, for recording a group' of data items relating to that portion, the group of data items being classified in the memory in a group of addresses, the first of these data items relating to the color of the portion and being classified at a first address, called the color address, in the group of addresses, the other data items relating to the parameters of the vectors constituting the portion being classified at the following addresses in the group of addresses;
  • a data processing element for enabling the generation of the traces on the screen of the cathode tube, in accordance with the output of the output register
  • a vector generator and a character generator controlled by the data processing element and capable of influencing the deflection of the cathode beam so as to make traces and characters appear on the screen;
  • the assembly being characterized in that it comprises a color change address selecting element controlled by the memory block and its address register, the selecting element listing the color addresses of the various groups and recording the corresponding color data, and the selection element being capable of controlling the reading of the main memory, so as to extract successively from that memory the data corresponding to the groups of addresses of the main memory containing identical color change data.
  • FIG. 1 is a schematic block diagram illustration of an embodiment according to the present invention.
  • FIG. 2 is a schematic block diagram illustration in another embodiment according to the present invention.
  • FIGS. 1 and 2 the visual display assembly shown in FIGS. 1 and 2 are provided with a polychromatic cathode tube 1 whose screen 2 is suitable for receiving traces of several colors, these traces being renewed in successive cycles.
  • a main memory is also provided and includes a memory block 3, an address register 4 and an output register 5.
  • the geographical data concerning the directing parameters and the color of the vectors forming a part of the polychromatic traces are received from a calculator or computer 6 by the block 3. This data is classified according to its address by means of the address register 4.
  • a data processing element 7 for enabling the generation of the traces and controlling the traces on the screen 2 of the cathode tube 1 is connected to the output register 5 and controlled thereby.
  • a vector generator 8 and a character generator 9 controlled by the processing element 7 and suitable for influencing the deflection of the cathode beam are provided so as to make traces and characters appear on the screen.
  • These vector and character generators control the horizontal deviation plates 10 and vertical deviation plates 11 by means of analog voltages supplied by a binary-to-analog convertor 12. It has been supposed, by way of an example, that one of the horizontal deviation plates 13 and one of the vertical deviation plates 14 are brought to a fixed reference potential.
  • the assembly comprises, also, means 15 for causing changes in color of the traces.
  • These means consist of a switching element for the high voltage applied to the cathode 16 of the cathode tube 1 and they are controlled by the element 7. It has been supposed, by way of an example, that the wehnelt 17, as well as the anode 18 of the cathode tube, is brought to the fixed reference potential. v
  • the assembly includes an address selection element or system 19 for selecting by change in color, and controlled by the memory block 3, by the address register 4 of the main memory and by the processing element 7.
  • the selectionelement is controlled so as to receive, from the memory block 3 and from its address register 4, the data relating to each change in color of the traces and enables all the addresses in the main memory where color change data is stored to be listed.
  • the selecting element 19 then controls the address register 4 of the main memory, so that, for each cycle of traces of several colors, the data items extracted from the main memory is classified into several groups of addresses comprising identical color change data.
  • the selection element19 which has received data concerning the address and the color of the various color changes contained in the mainv memory, controls the reading of the main memory, so that, for example:
  • the selection element 19 includes an auxiliary memory 20 controlled by the memory block 3 and by the address register 4 of the main memory. It is this auxiliary memory 20 which records the address and the color of each change in color in a same cycle of traces.
  • an address sorting out system 22 which includes a reference element 24 capable of sending out, successively, for each cycle of traces and for each color of traces, a reference signal characteristic'of that color.
  • the reference element may be a counter. having four states, in the case, for example. of a visual display system having four colors of traces. The counter will be placed in the first, second, third and fourth states, respectively for red, orange, yellow and green, during a cycle of traces.
  • the counter may receive, on one of its inputs 25, a signal for resetting to zero at the end of the cycle, coming from the auxiliary memory 20 through a referencing element 26.
  • the reference element 24 receives, on one input 27, a signal indicating the end of a reading pass of the auxiliary memory, each time a group of addresses concerning a same color is exhausted. The end of reading pass signal causes the change in states of the counter.
  • the color change address sorting out system also includes a color comparator 28, which receives, on one input 29, the reference signal of the reference element 24.
  • the comparator receives, simultaneously, on another of its inputs 30, the color signals sent out by an output of the auxiliary memory 20, relating to the various changes in color listed in the auxiliary memory and coming into play during a cycle of traces. If the color signal corresponds, at the instant considered, to the reference signal 29, a signal which may be qualitied, for example, as a successful test signal, appears at the output 31 of the comparator and causes the blocking of an AND gate 32, one of whose inputs receives pulses from a clock 37.
  • a negative test signal appears at the output 32 of the comparator and makes the AND gate 32 conductive.
  • An address counter 33 for the auxiliary memory 20 is connected by an input 34 to the output of the gate 32, Reading or recording in the auxiliary memory is effected through a recording and reading element 23, controlled by an output 39 of the data processor 7.
  • the selection system 19 enables the reading of the contents of the auxiliary memory 20 by the sorting out of the groups of color change addresses.
  • the addresses preceded by a change in the red color then the addresses preceded by a change in the orange color, the addresses preceded by a change in the yellow color, and then in the green color, will be retained for the traces.
  • a first operation phase of the visual display assembly the graphic data, for a cycle of traces coming from the calculator, are charged in the main memory.
  • the charging of the auxiliary memory 20 is effected by the data concerning the address and color of each color change, a recording order having reached an input 35 of that memory.
  • the third operation phase is the auxiliary memory reading phase, controlled by the selection system 19, as has previously been described.
  • the gate 32 then supplies a pulse to the address counter 33 which changes states and thus causes the passing to the following address of the auxiliary memory while a new comparison of the color signal with the reference signal is established. Comparison tests are thus effected at the successive addresses of the auxiliary memory until an address where a successful comparison test may be established is detected, this causing the appearance of a new operand on an output of the auxiliary memory and the subsequent reading of the corresponding address in the main memory.
  • the assembly therefore enables the .traces to be effected separately according to successive colors, during a cycle.
  • the auxiliary memory is passed through four times, each pass corresponding to a color.
  • the programming requirements relating to the colors are thus avoided and the color switching system does not operate in prohibitive switching speed conditions.
  • the color change sorting out system there is no longer any limit in the number of changes in the colors of the traces.
  • the system operates without modification of the aspect of the message transmitted by the calculator.
  • HO. .2 illustrates another embodiment of the present invention which is intended, moreover, to avoid programming requirements relating to the operating of the spot when there are color changes.
  • the address register 4 is forced by the calculator or computer 6, at the beginning of the transfer, towards the memory block 3 at the address considered and is incremented at each word of the graphic message.
  • the selection element 19 is moreover controlled by the binary outputs 38' and 40 of the assembly 12 comprising a binary-to-analog converter supplying the analog control voltages of the horizontal deviation plates and vertical deviation plates 11.
  • the controlling of the selection element 19 by the binary outputs 38 and 40 of the assembly 12 is applied to the auxiliary memory which records, besides the address and the color of each change in color in a same cycle of traces, the data concerning the position of the light spot at the instant of the change in color.
  • the selection element 19 which has received data concerning the address, color, various changes in color and the data concerning the positioning of the spot when the color changes, contained in the main memory, will control the reading of the main memory so that, for each cycle of traces having the same color, all the traces of that color are then effected by selection, in the main memory, of the address preceded by a change in that color, the data concerning the coordinates of the light spot being extracted from 6 l the main memory at the same time as the data concerngramming requirements relating to the positioning of the spot are thus avoided due to the extra information supplied by the auxiliary memory for each change in color, besides the address and the color in the main memory, the coordinates of the spot at the instant of the change in color are shown.
  • These coordinates, at each change in color, are calculated by the data processing element during the original reading cycle which is used for seeking color change addresses.
  • the various instructions are carried out as in a normal cycle of traces, but the spot remains extinguished as long as the charging of the auxiliary memory is effected.
  • the various data concerning the address and the color of the change in color is recorded in the auxiliary memory, but moreover, it is easy, at that instant, to record, also, in the auxiliary memory, data concerning the coordinates of the light spot when that change in color takes place.
  • the auxiliary memory is scanned and the isochromatic assemblies are traced by successive colors; nevertheless, before the trace of each assembly, the light spot is positioned according to the data recorded in the auxiliary memory. If, at a given instant, a block of traces forming a part of an isochromatic assembly is analyzed in the main memory, then traced and if a color change instruction then appears, this indicates the end of the isochromatic block. This is interpreted by the data processing element as a reading order at the outgoing address of a block of the same color in the auxiliary memory.
  • Polychromatic graphic visual display assembly comprising:
  • a polychromatic cathode tube having a screen for receiving traces having portions of various colors, the traces being renewed in successive cycles;
  • a main memory means including a memory block, an address register and an output register from which graphic data items entered into the memory are extracted, the main memory means for each portion of traces recording a group of data items relating to that portion, the group of data items being classified in the memory means in a group of addresses, the first of the data items relating to the color of the portion and being classified as a first color change address in the group of addresses, the other data items relating to the parameters of the vectors constituting the portion being classified at following addresses in the group of addresses;
  • vector generator means and character generator means responsive to the data processing means for influencing a cathode beam deflection control element means so as to make traces and characters appear on the screen;
  • color change address selecting means responsive to said memory block and said address register thereof for listing the color change addresses of the various color groups and recording the corresponding color data thereof, the color change address selecting means selecting in sequence one of the various colors and controlling the reading of the main memory means for extracting successively from the main memory means all of the data corresponding to the groups of addresses of the main memory means containing identical color data for the selected color so as to extract the data corresponding to the various colors in sequence.
  • the color change address selecting means includes auxiliary memory means responsive to the memory block and theaddress register for listing the color change addresses and recording the corresponding color data, and color change address sorting system means controlling the auxiliary memory means to sort out the addresses in the auxiliary memory means which contain identical color data at the reading outputs of the auxiliary memory means and for controlling the reading inputs of the main memory means.
  • the cathode beam deflection control element means provides an output of digital signals indicative of light spot positioning data on the screen of the cathode tube
  • the color change address selecting means being responsive to the digital signals for listing for each color change address the light spot positioning data generating the traces from each color change, the color change address selecting means controlling the reading of the main memory means to extract the corresponding light spot positioning data from the main memory means at the same time as the extraction of the data of each color change.
  • color change address selecting means comprises:
  • auxiliary memory means responsive to the memory block, the address register and the outputs of the cathode beam deflection control element means for listing the color change address and for recording the corresponding color change and positioning data;
  • color change address sorting system means controlling the auxiliary memory means to sort out the addresses in the auxiliary memory means which contain identical color data at the reading outputs of the auxiliary memory. means and for controlling reading inputs of the main memory means.
  • reference element means for providing successive outputs for each cycle of traces and for each of the colors of a reference signal characteristic of the color
  • color comparator means for comparing, at each instant, the reference signal with a color change signal provided at one of the outputs of the auxiliary memory means, the color change signal being characteristic of the color change data existing in the auxiliary memory means in the color address corresponding to the output at the instant, the comparator providing an output of one of a positive test sig nal when the color change signal corresponds to the reference signal and of a negative test signal when the color change signal does not correspond to the reference signal;
  • incrementing means responsive to the comparator means for providing an output to the address counter of the auxiliary memory means, the incrementing means incrementing the said address counter in response to a negative test signal, the auxiliary memory means providing at one of the reading outputs thereof an operand signal when a positive test signal is obtained for the color address corresponding to such output, the operand signal controlling the main memory means so that a trace corresponding to the data contained at the corresponding address in the main memory means is effected on the screen;
  • the reference element means is a counter capable of changing states for each cycle of traces in ac- ,cordance with the number of colors in each of the cycles.
  • the incrementing means includes an AND gate having one input connected to the output of the com parator means and another input connected to receive clock pulses.
  • color change address sorting out system means comprises:
  • reference element means for providing successive outputs for each cycle of traces and for each of the colors of a reference signal characteristic of the color
  • color comparator means for comparing, at each instant, the reference signal with a color change signal provided at one of the outputs of the auxiliary memory means, the color change signal being characteristic of the color change data existing in the auxiliary memory means in the color address corresponding to the output at the instant, the comparator providing an output of one of a positive test signal when the color change signal corresponds to the reference signal and of a negative test signal when the color change signal does not correspond to the said reference-signal;
  • incrementing means responsive to the comparator means for providing an output to the address counter of the auxiliary memory means, the incrementing means incrementing the said address counter in response to a negative test signal, the auxiliary memory means providing at one of the reading outputs thereof an operand signal when a I positive test signal is obtained for the color address corresponding to such output, the operand signal controlling the main memory means so that a trace corresponding to the data contained at the corresponding address in the main memory means is effected on the screen.
  • the reference element means is a counter capable of changing states for each cycle of traces in accordancewith the number of colors in each of the cycles.
  • the incrementing means includes an AND gate having one input connected to the output of the comparator means and another input connected to receive clock pulses.
  • Graphic visual display assembly comprising:
  • polychromatic cathode tube means for displaying a picture composed of traces of various colors in accordance with binary data items supplied by a computer in groups of data items, each group defining successive traces having the same color;
  • main memory means for recording the groups of data items at successive groups of addresses wherein the first address is the color data item of the corresponding traces;
  • processing unit means responsive to the main memory means for generating signals for controlling the cathode tube means in accordance with data readout from the main memory means;
  • selection circuit means for sequentially selecting one of the various colors and for controlling the readout from the main memory means of all the groups of data items preceded by the color data item of the selected color, the data read-out being supplied to the processing unit means for enabling the display, one color after another, of the traces having the same color to form a composite picture.
  • a visual display assembly wherein the selection circuit means includes an auxiliary memory means for recording the color addresses and recording the corresponding color data.
  • a visual display assembly wherein the selection circuit means also includes color sorting means for controlling the auxiliary memory means to sort out the addresses in the suxiliary memory means which contain identical color data at the reading outputs of the auxiliary memory means and for controlling the reading inputs of the main memory means in accordance therewith.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Image Generation (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
US00361493A 1972-05-19 1973-05-18 Polychromatic graphic visual display and control system assembly Expired - Lifetime US3854130A (en)

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FR7218013A FR2185173A5 (xx) 1972-05-19 1972-05-19
FR7231146A FR2198674A6 (xx) 1972-09-01 1972-09-01

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Cited By (14)

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US3944999A (en) * 1973-12-20 1976-03-16 International Computers Limited Colour display apparatus
US3997891A (en) * 1974-06-05 1976-12-14 Hitachi, Ltd. Light pen detection system
US4150364A (en) * 1976-11-29 1979-04-17 Rca Corporation Parallel access memory system
US4169262A (en) * 1977-11-17 1979-09-25 Intel Corporation Video display circuit for games, or the like
US4200867A (en) * 1978-04-03 1980-04-29 Hill Elmer D System and method for painting images by synthetic color signal generation and control
US4204207A (en) * 1977-08-30 1980-05-20 Harris Corporation Video display of images with video enhancements thereto
US4206457A (en) * 1977-12-27 1980-06-03 Rca Corporation Color display using auxiliary memory for color information
US4213124A (en) * 1976-09-22 1980-07-15 Etablissement Public De Diffusion Dit "Telediffusion De France" System for digitally transmitting and displaying texts on television screen
US4217577A (en) * 1977-12-09 1980-08-12 International Business Machines Corporation Character graphics color display system
US4225861A (en) * 1978-12-18 1980-09-30 International Business Machines Corporation Method and means for texture display in raster scanned color graphic
US4684942A (en) * 1984-05-24 1987-08-04 Ascii Corporation Video display controller
US4823120A (en) * 1986-09-12 1989-04-18 Apple Computer, Inc. Enhanced video graphics controller
US5321517A (en) * 1986-05-21 1994-06-14 Canon Kabushiki Kaisha Image transmission apparatus indicating a color type of the color signal transmitted
CN105842507A (zh) * 2016-05-09 2016-08-10 优利德科技(中国)有限公司 一种示波器数字荧光显示方法及其控制装置

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JPS52141525A (en) * 1976-05-20 1977-11-25 Tokico Ltd Card reader
JPS5718808A (en) * 1980-07-04 1982-01-30 Toa Gosei Chem Ind Loosening-proof applied screw element

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US3624634A (en) * 1969-12-22 1971-11-30 Rca Corp Color display
US3668686A (en) * 1969-06-06 1972-06-06 Honeywell Inc Control apparatus

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US3668686A (en) * 1969-06-06 1972-06-06 Honeywell Inc Control apparatus
US3624634A (en) * 1969-12-22 1971-11-30 Rca Corp Color display

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944999A (en) * 1973-12-20 1976-03-16 International Computers Limited Colour display apparatus
US3997891A (en) * 1974-06-05 1976-12-14 Hitachi, Ltd. Light pen detection system
USRE32187E (en) * 1976-09-22 1986-06-17 Etablissement Public De Diffusion Dit "Telediffusion De France" System for digitally transmitting and displaying texts on television screen
US4213124A (en) * 1976-09-22 1980-07-15 Etablissement Public De Diffusion Dit "Telediffusion De France" System for digitally transmitting and displaying texts on television screen
US4150364A (en) * 1976-11-29 1979-04-17 Rca Corporation Parallel access memory system
US4204207A (en) * 1977-08-30 1980-05-20 Harris Corporation Video display of images with video enhancements thereto
US4169262A (en) * 1977-11-17 1979-09-25 Intel Corporation Video display circuit for games, or the like
US4217577A (en) * 1977-12-09 1980-08-12 International Business Machines Corporation Character graphics color display system
US4206457A (en) * 1977-12-27 1980-06-03 Rca Corporation Color display using auxiliary memory for color information
US4200867A (en) * 1978-04-03 1980-04-29 Hill Elmer D System and method for painting images by synthetic color signal generation and control
US4225861A (en) * 1978-12-18 1980-09-30 International Business Machines Corporation Method and means for texture display in raster scanned color graphic
US4684942A (en) * 1984-05-24 1987-08-04 Ascii Corporation Video display controller
US5321517A (en) * 1986-05-21 1994-06-14 Canon Kabushiki Kaisha Image transmission apparatus indicating a color type of the color signal transmitted
US5523860A (en) * 1986-05-21 1996-06-04 Canon Kabushiki Kaisha Image transmission apparatus indicating a color type of the color signal transmitted
US4823120A (en) * 1986-09-12 1989-04-18 Apple Computer, Inc. Enhanced video graphics controller
CN105842507A (zh) * 2016-05-09 2016-08-10 优利德科技(中国)有限公司 一种示波器数字荧光显示方法及其控制装置
CN105842507B (zh) * 2016-05-09 2019-01-15 优利德科技(中国)股份有限公司 一种示波器数字荧光显示方法及其控制装置

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IE37624L (en) 1973-11-19
SE380915B (sv) 1975-11-17
NO140029B (no) 1979-03-12
DK132973C (da) 1976-07-26
DE2324564A1 (de) 1973-11-29
NO140029C (no) 1979-06-20
NL7306924A (xx) 1973-11-21
LU67589A1 (xx) 1973-11-23
IE37624B1 (en) 1977-08-31
GB1404685A (en) 1975-09-03
DK132973B (da) 1976-03-01
JPS4943536A (xx) 1974-04-24

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