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. 23, 2007
Filed:
Mar. 03, 2004
Yuichi Tateyama, Kanagawa, JP;
Yuichi Tateyama, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
It is an object of the invention to obtain a stable operation with a low phase noise. Moreover, it is another object to obtain an oscillating output which does not cause the delay of a starting time. According to the invention, it is possible to implement a crystal oscillating circuit capable of superposing a signal obtained by feeding back the oscillating output of a crystal oscillating member () by a feedback circuit () on a control signal for selecting the load capacity of a load capacity selecting portion (), and influencing an MOS transistor () by the voltage noise of the control signal with difficulty, thereby reducing a phase noise, and furthermore, limiting a control signal to be input to the load capacity selecting portion () for a certain time in starting and carrying out the starting in a short time.