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:
Jan. 05, 1982
Filed:
Jul. 03, 1979
Jaroslav Hynecek, Dallas, TX (US);
Charles G Roberts, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The present invention is embodied in a method of operating a charge-coupled device (CCD) having a non-destructive readout floating gate amplifier to minimize noise on the floating gate. A pair of control gates are adjacent to and partially overlap the floating gate and are electrically insulated therefrom. Noise caused by presetting the floating gate voltage is minimized by presetting after a series of 'reads' instead of after each 'read'. Coherent clock noise induced by capacitive coupling of the control gates to the floating gate is eliminated by applying appropriate simultaneous signals to the control gates. Device sensitivity is improved.