The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 1985
Filed:
Jan. 03, 1983
Albert J Charpentier, Hatfield, PA (US);
James W Redfield, Pottstown, PA (US);
David W DiOrio, Easton, PA (US);
Commodore Business Machines, Inc., West Chester, PA (US);
Abstract
A solid-state, digital logic, sine-cosine generator is provided for use in color television signal generators which contributes little or no phase shift or drift, whereby an input frequency of four times the color burst rate is used, and a first divide by two shift register operates upon that input signal frequency while a second divide by two shift register is used to obtain the proper color burst frequency as well as the 90.degree. relationship for the sine and cosine signals; a series of integrators then converts the digital 'square' waves to triangular and then sinusoidal signals.