US3631457A - Display apparatus - Google Patents

Display apparatus Download PDF

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Publication number
US3631457A
US3631457A US855804A US3631457DA US3631457A US 3631457 A US3631457 A US 3631457A US 855804 A US855804 A US 855804A US 3631457D A US3631457D A US 3631457DA US 3631457 A US3631457 A US 3631457A
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United States
Prior art keywords
memory
display
character
generating
display apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US855804A
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English (en)
Inventor
Nagaharu Hamada
Motosi Miyanaka
Yasuo Suzuki
Isao Yasuda
Yukitaka Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
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Hitachi Ltd
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Filing date
Publication date
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Publication of US3631457A publication Critical patent/US3631457A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/08—Cursor circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/222—Control of the character-code memory

Definitions

  • Patented Dec. 28, 1971 18 Sheets-Sheet 9 bm b 9% mmnvm M Tw 0 hww U u Patented Dec. 28, 1971 3,631,457
  • the present invention proposes a display apparatus in which intensity modulation is applied to scanning lines of a cathoderay tube with suitable timing so as to display a character, symbol or pattern by an assembly of bright spots or dots, that is, by a suitable combination of horizontal and vertical dots.
  • the display section may merely consist of a television receiver of the standard television system, and circulating memories, such as delay line memories or dynamic shift registers, are employed in the control circuit to obtain an inexpensive display apparatus.
  • Another object of the present invention is to provide a display apparatus which can display patterns including a graph in spite of a very small memory capacity.
  • FIG. I is a diagram illustrating the basic principle of the present invention.
  • FIG. 2 is a block diagram showing the basic structure of the present invention.
  • FIG. 3 is a block diagram for the explanation of a basic control circuit and a character-generating circuit in an embodiment of the present invention.
  • FIGS. 4 and 5 show a time chart for the explanation operation of the circuits shown in FIG. 3.
  • FIG. 6a is a block diagram showing the structure of a memory 4 in the embodiment of the present invention.
  • FIG. 6b is a circuit diagram of one of the blocks shown in FIG. 60.
  • FIGS. 7a and 7b are block diagrams respectively showing the structure of a memory control circuit and a cursor control circuit in the embodiment of the present invention.
  • FIGS. 80 and 8! show a time chart for the explanation of the operation of the memory control and cursor control.
  • FIG. 9 is a block diagram showing the structure of a circuit for writing data from a keyboard in the memory in the embodiment of the present invention.
  • FIG. [0 shows a time chart for the explanation of operation of the circuit shown in FIG. 9.
  • FIG. 11 is a diagram illustrating how a pattern and a character are simultaneously displayed by the present invention.
  • FIGS. 12a through 12d illustrate a circuit diagram of another embodiment of the present invention for effecting a display as shown in FIG. 11.
  • FIG. 13 is a view showing the relation between FIGS. 12a, 12b, 12c and IZd.
  • FIG. 14 is a block diagram showing a practical example comprising a combination of a display apparatus and a television receiver.
  • FIG. I5 shows a time chart for the explanation of write-in operation with a high-speed shift register.
  • FIG. 1 is a diagram illustrating the basic principle of the present invention.
  • FIG. Ia shows diagrammatically a part of the display on the screen of a cathode-ray tube.
  • intensity modulation is applied to the rasters with suitable timing so as to display a character, symbol or pattern by an assembly of bright spots or dots.
  • the video signal corresponding to the respective raster may be controlled in a manner as seen in FIG. lb so that they can display a specific character or symbol.
  • I4 rasters are allotted to one line of a character or symbol to be displayed, with 7 rasters being used for display and the remaining rasters are used to provide a space between lines, while in the horizontal direction, eight dots are allotted, with five dots used for display and the remaining dots used to provide a space between characters or symbols.
  • any desired character or symbol can be displayed by the combination of 35 dots consisting of five horizontal dots and seven vertical dots.
  • the display apparatus comprises a keyboard and printer unit I, a memory control circuit 2, a data processing unit 3 such as a computer or data logger, a memory 4, a basic control circuit 5, a charactergenerating circuit 6 and a display unit 7.
  • the keyboard and printer unit I writes in desired characters or symbols and prints displayed characters or symbols for preservation.
  • the memory control circuit 2 controls the acceptance and delivery of data between the keyboard and printer unit I, the computer 3 and the memory 4 and readout of data from the memory 4 for delivery to the character-generating circuit 6 for the sake of display.
  • the memory 4 stores the code of the characters to be displayed on the screen and effects readout and write-in of data under the control of the memory control circuit 2.
  • the basic control circuit 5 produces the horizontal and vertical synchronizing signals to be applied to the display unit 7, and at the same time, applies signals designating the position of the characters, space between characters and space between lines to the character-generating circuit 6 and memory control circuit 2.
  • the character-generating circuit 6 generates a video signal according to the timing designated by the basic control circuit 5 on the basis of the code supplied from the memory 4 and delivers the video signal to the display unit 7.
  • the display unit 7 displays a character or symbol on the face of a cathode ray tube when it receives the video signal described above and the synchronizing signals supplied from the basic control circuit 5.
  • a display apparatus having a plurality of input units

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Digital Computer Display Output (AREA)
US855804A 1968-09-09 1969-09-08 Display apparatus Expired - Lifetime US3631457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43064261A JPS497615B1 (ja) 1968-09-09 1968-09-09

Publications (1)

Publication Number Publication Date
US3631457A true US3631457A (en) 1971-12-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
US855804A Expired - Lifetime US3631457A (en) 1968-09-09 1969-09-08 Display apparatus

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US (1) US3631457A (ja)
JP (1) JPS497615B1 (ja)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746793A (en) * 1972-08-09 1973-07-17 Phonics Corp Telephone communication system for the hearing impaired
US3750135A (en) * 1971-10-15 1973-07-31 Lektromedia Ltd Low resolution graphics for crt displays
US3793483A (en) * 1972-11-24 1974-02-19 N Bushnell Video image positioning control system for amusement device
US3792613A (en) * 1972-05-19 1974-02-19 Krautkramer Branson Pulse-echo ultrasonic test apparatus with cathode ray tube digital display
US3798366A (en) * 1972-03-06 1974-03-19 R Winkler Infrared imaging system
US3872461A (en) * 1972-10-26 1975-03-18 Mennen Greatbatch Electronics Waveform and symbol display system
US3906480A (en) * 1973-02-23 1975-09-16 Ibm Digital television display system employing coded vector graphics
US3958225A (en) * 1974-01-28 1976-05-18 Teletype Corporation Apparatus and method for controlling a communications terminal
US4015846A (en) * 1976-04-30 1977-04-05 Robert Ralph Runte Handicapping circuit for electronic games
JPS5315937A (en) * 1976-07-28 1978-02-14 Kawai Musical Instr Mfg Co Game apparatus by pictureetube display
US4139903A (en) * 1976-03-31 1979-02-13 Hewlett-Packard Company Logic state analyzer
US4155095A (en) * 1976-09-16 1979-05-15 Alpex Computer Corporation Chroma control for television control apparatus
US4202041A (en) * 1977-07-11 1980-05-06 Massachusetts Institute Of Technology Dynamically variable keyboard terminal
US4475172A (en) * 1978-05-30 1984-10-02 Bally Manufacturing Corporation Audio/visual home computer and game apparatus
US5125671A (en) * 1982-12-22 1992-06-30 Ricoh Co., Ltd. T.V. game system having reduced memory needs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552331A (en) * 1947-09-08 1951-05-08 Anthony H Lamb Electric clock fire alarm
US3336587A (en) * 1964-11-02 1967-08-15 Ibm Display system with intensification
US3345458A (en) * 1963-10-16 1967-10-03 Rca Corp Digital storage and generation of video signals
US3382487A (en) * 1965-12-27 1968-05-07 Xerox Corp Dataphone driven remote display system
US3388391A (en) * 1965-04-07 1968-06-11 Rca Corp Digital storage and generation of video signals
US3396377A (en) * 1964-06-29 1968-08-06 Gen Electric Display data processor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552331A (en) * 1947-09-08 1951-05-08 Anthony H Lamb Electric clock fire alarm
US3345458A (en) * 1963-10-16 1967-10-03 Rca Corp Digital storage and generation of video signals
US3396377A (en) * 1964-06-29 1968-08-06 Gen Electric Display data processor
US3336587A (en) * 1964-11-02 1967-08-15 Ibm Display system with intensification
US3388391A (en) * 1965-04-07 1968-06-11 Rca Corp Digital storage and generation of video signals
US3382487A (en) * 1965-12-27 1968-05-07 Xerox Corp Dataphone driven remote display system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750135A (en) * 1971-10-15 1973-07-31 Lektromedia Ltd Low resolution graphics for crt displays
US3798366A (en) * 1972-03-06 1974-03-19 R Winkler Infrared imaging system
US3792613A (en) * 1972-05-19 1974-02-19 Krautkramer Branson Pulse-echo ultrasonic test apparatus with cathode ray tube digital display
US3746793A (en) * 1972-08-09 1973-07-17 Phonics Corp Telephone communication system for the hearing impaired
US3872461A (en) * 1972-10-26 1975-03-18 Mennen Greatbatch Electronics Waveform and symbol display system
US3793483A (en) * 1972-11-24 1974-02-19 N Bushnell Video image positioning control system for amusement device
US3906480A (en) * 1973-02-23 1975-09-16 Ibm Digital television display system employing coded vector graphics
US3958225A (en) * 1974-01-28 1976-05-18 Teletype Corporation Apparatus and method for controlling a communications terminal
US4139903A (en) * 1976-03-31 1979-02-13 Hewlett-Packard Company Logic state analyzer
US4015846A (en) * 1976-04-30 1977-04-05 Robert Ralph Runte Handicapping circuit for electronic games
JPS5315937A (en) * 1976-07-28 1978-02-14 Kawai Musical Instr Mfg Co Game apparatus by pictureetube display
JPS5437544B2 (ja) * 1976-07-28 1979-11-15
US4155095A (en) * 1976-09-16 1979-05-15 Alpex Computer Corporation Chroma control for television control apparatus
US4202041A (en) * 1977-07-11 1980-05-06 Massachusetts Institute Of Technology Dynamically variable keyboard terminal
US4475172A (en) * 1978-05-30 1984-10-02 Bally Manufacturing Corporation Audio/visual home computer and game apparatus
US5125671A (en) * 1982-12-22 1992-06-30 Ricoh Co., Ltd. T.V. game system having reduced memory needs
US5308086A (en) * 1982-12-22 1994-05-03 Ricoh Co., Ltd. Video game external memory arrangement with reduced memory requirements
US5560614A (en) * 1982-12-22 1996-10-01 Ricoh Co., Ltd. Video game system having reduced memory needs for a raster scanned display

Also Published As

Publication number Publication date
JPS497615B1 (ja) 1974-02-21

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