3721810

Information

• Patent Grant
• 3721810

• References
• Source

• Patent Number

  3,721,810

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • G06G7/22 - for evaluating trigonometric functions for conversion of co-ordinates for computations involving vector quantities
  • G05B19/4103 - Digital interpolation
  • G06G7/28 - for synthesising functions by piece-wise approximation
  • G09G1/08 - the beam directly tracing characters, the information to be displayed controlling the deflection and the intensity as a function of time in two spatial co-ordinates
  • G09G1/12 - the deflection signals being produced by essentially analogue means
  • G05B2219/34136 - Ellipse, hyperbola
  • G05B2219/35554 - Mirror, other conversions
  • G05B2219/49221 - Control of scale

• US Classifications

  • 358 - Facsimile and static presentation processing
  • 345 - Computer graphics processing and selective visual display systems
  • 708 - Electrical computers: arithmetic processing and calculating