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

Resolution enhancement for video display using multi-line interpolation

Patent 5481275 Issued on January 2, 1996. Estimated Expiration Date: Icon_subject January 2, 2013. 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

Video output circuit for high resolution character generator in a digital display unit
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Inventor: Greer ,   et al.

Split-BUS multiprocessor system
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Altering spatial characteristics of a digital image
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TV graphic displays without quantizing errors from compact image memory
Patent #: 4656467
Issued on: 04/07/1987
Inventor: Strolle

Video data interpolation apparatus
Patent #: 4719509
Issued on: 01/12/1988
Inventor: Sakamoto

Intra-field recursive interpolator
Patent #: 4752826
Issued on: 06/21/1988
Inventor: Barnett

Dual clock shift register
Patent #: 4771279
Issued on: 09/13/1988
Inventor: Hannah

Video system for displaying lower resolution video signals on higher resolution video monitors
Patent #: 4866520
Issued on: 09/12/1989
Inventor: Nomura ,   et al.

High resolution graphics system
Patent #: 4918436
Issued on: 04/17/1990
Inventor: Johary

Image interpolator for an image display system
Patent #: 4988984
Issued on: 01/29/1991
Inventor: Gonzalez-Lopez

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Inventors

Assignee

Application

No. 970287 filed on 11/02/1992

US Classes:

345/698Adjusting display pixel size or pixels per given area (i.e., resolution)

Examiners

Primary: Kuntz, Curtis
Assistant: Chang, Vivian

Attorney, Agent or Firm

Foreign Patent References

  • 0437630A1 EP 07/12/1991
  • 0487267A2 EP 05/12/1992
  • 90/15385 WO 12/12/1990
  • 91/19272 WO 12/12/1991
  • 92/02897 WO 02/12/1992

International Class

G09G 001/06

Abstract

The invention provides a method and apparatus for enhancing apparent image resolution by way of multi-line interpolation. A method for enhancing the resolution of low-resolution image-data includes the steps of: providing a memory having independently addressable storage banks; storing the low-resolution image-data in the memory such that low-resolution image-data defining a first low-resolution row resides in a first of said storage banks and such that low-resolution image-data defining a second low-resolution row, adjacent to the first low-resolution row, resides in a second of said storage banks; extracting first through Nth low-resolution pixel signals from the memory, said signals representing values of low-resolution pixels in the adjacent first and second low-resolution rows of the low-resolution image-data; and producing a high-resolution pixel signal from said first through Nth low-resolution pixel signals in accordance with a distance-weighted algorithm.

Other References

  • Rosenfeld, Azriel and Kak, Avinash. "Digital Picture Processing", Academic Press, New York, 1976, pp. 57-59, 275-296 and 179-19
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