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:
Dec. 04, 2001
Filed:
Apr. 27, 2000
Chin-Chieh Chao, Hsinchu, TW;
Keh-Yung Tso, Hsinchu, TW;
Jieh-Tsorng Wu, Hsinchu, TW;
Tsen-Shau Yang, Hsinchu, TW;
Century Semiconductor, Inc., Hsinchu, TW;
Abstract
An interpolating D/A converter architecture includes a reference voltage generator, a decoding switch network, a routing switch, and an interpolating buffer. The reference voltage generator generates a plurality of reference voltages. The decoding switch network is coupled to the reference voltage generator for selecting two reference voltages from the plurality of reference voltages in response to the plurality of high bits of digital video signals. The routing switch is coupled to the decoding switch network for selectively providing a first reference voltage and a second reference voltage in response to a plurality of low bits of the digital video signals. And the interpolating buffer is coupled to the routing switch for outputting an interpolated analog signal in response to the first reference voltage and the second reference voltage. Eventually, the present invention can save half the D/A reference lines and half the associated decoding switch rows, and thereby save the die cost.