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:
May. 31, 2005
Filed:
Feb. 26, 2003
Hirotaka Oosawa, Isesaki, JP;
Jiro Shinbo, Takasaki, JP;
Noriyuki Kurakami, Maebashi, JP;
Masumi Kasahara, Takasaki, JP;
Robert Astle Henshaw, Sudbury, GB;
Hirotaka Oosawa, Isesaki, JP;
Jiro Shinbo, Takasaki, JP;
Noriyuki Kurakami, Maebashi, JP;
Masumi Kasahara, Takasaki, JP;
Robert Astle Henshaw, Sudbury, GB;
Renesas Technology Corp., Tokyo, JP;
TTPCOM Limited, Hertfordshire, GB;
Abstract
A communication semiconductor integrated circuit has an oscillator circuit forming part of a transmission PLL circuit fabricated on a single semiconductor chip together with an oscillator circuit forming part of a reception PLL circuit and an oscillator circuit for an intermediate frequency. The oscillator circuit forming part of the transmission PLL circuit is configured to be operable in a plurality of bands. A circuit for measuring the oscillating frequency of the oscillator circuit forming part of the transmission PLL circuit is also used for measuring the oscillating frequency of the oscillator circuit forming part of the reception PLL circuit or for measuring the oscillating frequency of the oscillator circuit for the intermediate frequency.