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:
Oct. 02, 2007
Filed:
Feb. 13, 2006
Applicant:
Shunsuke Hirano, Totsuka-ku, JP;
Inventor:
Shunsuke Hirano, Totsuka-ku, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/36 (2006.01); H03C 3/08 (2006.01); H03C 3/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a transmission modulation apparatus, using polar modulation of two-point modulation scheme, capable of completing a timing adjustment of a BB phase modulation signal and BB amplitude modulation signal in a short time. A phase modulation section () that performs two-point modulation with a PLL circuit is provided with a switch () to make the PLL circuit open loop, and when a first delay section () corrects the deviation in synchronization between the BB phase modulation signal and BB amplitude modulation signal, the switch () is turned off to make the PLL circuit open loop.