| US 7,532,144 B2 | ||
| AD converter and radio receiver | ||
| Takafumi Yamaji, Yokohama (Japan); and Takeshi Ueno, Kawasaki (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Apr. 17, 2008, as Appl. No. 12/104,488. | ||
| Application 12/104488 is a continuation of application No. 11/623803, filed on Jan. 17, 2007. | ||
| Claims priority of application No. 2006-047125 (JP), filed on Feb. 23, 2006; and application No. 2006-204140 (JP), filed on Jul. 27, 2006. | ||
| Prior Publication US 2008/0204298 A1, Aug. 28, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H03M 1/12 (2006.01) | ||
| U.S. Cl. 341—156 [341/155] | 17 Claims |
| 1. An AD converting method, comprising:
generating m parallel pieces of first quantized signals from m pieces of analog signals representing n-dimensional vectors
(n <m<2n);
generating m pieces of decoded analog signals from the m parallel pieces of first quantized signals;
multiplying respective differences between each of the m pieces of analog signals and each of the m pieces of decoded analog
signals by a constant multiplier to output m pieces of amplified residual signals;
generating m parallel pieces of second quantized signals from the m pieces of amplified residual signals; and
synthesizing each of the first quantized signals and each of the second quantized signals at each parallel position by delaying
the first quantized signals by a delay amount of the second quantized signals relative to the first quantized signals, to
generate m parallel pieces of digital signals.
|