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:
Aug. 01, 2000
Filed:
Oct. 22, 1998
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A demodulator is made compact, and with a simple circuit arrangement, and also having a better bit error rate characteristic. A timing phase synchronization detecting circuit 219 judges any one of the following two conditions based upon baseband phase data 202, i.e., an UNLOCK (timing phase asynchronous) condition, and a LOCK (timing phase synchronous) condition. Based upon the judgement result of the timing phase synchronization detecting circuit 219, in a timing recovering means 221, a frequency range of a PLL (phase synchronization loop) is variable, whereas the number of data entered within 1 symbol time is variable in a frequency synchronizing means 222 and a carrier recovering means 223. A data demodulating means 224 outputs demodulation data 206 in response to baseband phase data 202 and a recovery carrier signal 205.