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. 30, 2004
Filed:
Oct. 20, 2003
Lloyd F. Linder, Agoura Hills, CA (US);
Don C. Devendorf, Carlsbad, CA (US);
Erick M. Hirata, Torrance, CA (US);
Telasic Communications, Inc., El Segundo, CA (US);
Abstract
A system and method for sampling and holding a signal. The invention includes a novel input circuit for a track and hold circuit comprising a circuit Q for receiving an input signal including an input node, a first output node N , and a path connecting the input and output nodes; a current switching circuit for applying a first current to the node N during a first mode of operation but not during a second mode; and a current source for applying a second current to the node N during both of the first and second modes. The value of the first current is determined such that the total current in the path is constant during the first and second modes. In an illustrative embodiment, the first mode is a track mode and the second mode is a hold mode.