U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

CRT display device with a picture-shifting circuit

Patent 4940970 Issued on July 10, 1990. Estimated Expiration Date: Icon_subject May 2, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Apparatus for displaying new information on a cathode ray tube display and rolling over previously displayed lines
Patent #: 4068225
Issued on: 01/10/1978
Inventor: Lee

Raster scan type CRT display system having an image rolling function
Patent #: 4129859
Issued on: 12/12/1978
Inventor: Iwamura ,   et al.

Addressing circuitry for a vertical scan dot matrix display apparatus
Patent #: 4201983
Issued on: 05/06/1980
Inventor: Magerl ,   et al.

Pattern generation display system
Patent #: 4246578
Issued on: 01/20/1981
Inventor: Kawasaki ,   et al.

Row address linking control system for video display terminal
Patent #: 4249172
Issued on: 02/03/1981
Inventor: Watkins ,   et al.

Partial scrolling video generator
Patent #: 4342991
Issued on: 08/03/1982
Inventor: Pope ,   et al.

Display controlling apparatus
Patent #: 4491834
Issued on: 01/01/1985
Inventor: Oguchi

Information display system having a multiple cell raster scan display Patent #: 4618858
Issued on: 10/21/1986
Inventor: Belch

Inventor

Application

No. 346308 filed on 05/02/1989

US Classes:

345/28, Addressing345/686Memory addressing

Examiners

Primary: Oberley, Alvin E.

Attorney, Agent or Firm

International Class

G09G 001/16

Foreign Application Priority Data

1981-06-30 JP

Abstract

A CRT display device with a picture-rearranging circuit in which a display address for accessing a memory to display data stored in the memory is calculated at a high speed by hardware, i.e., a calculator, which counts values from an address counter or a reading or writing address from a microprocessing unit and an offset address generated from the microprocessing unit, the offset address being used to change the picture-arrangement on a display panel.

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