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:
Jun. 29, 1999
Filed:
Aug. 21, 1997
Muh-Tian Shiue, Taichung Hsien, TW;
Chorng-Kuang Wang, Taipei, TW;
Kuang-Hu Huang, Taoyuan Hsien, TW;
Po-Chiun Huang, Hsin-tein, TW;
National Science Council, Taipei, TW;
Abstract
A relay-race FLL/PLL high-speed timing acquisition device according to the invention comprises a transition detector, a voltage controlled oscillator, a loop filter of PLL, a first lowpass filter, a 90.degree. phase shifter, a second lowpass filter, and a plurality of multipliers. In addition, this relay-race FLL/PLL high-speed timing acquisition device is characterized by further comprising a frequency delimiter which includes a highpass filter coupled to a first circuit, a second circuit coupled to the highpass filter, a third lowpass filter coupled to the second circuit, a Schmitt inverter coupled to the third lowpass filter, and a switch member coupled to the Schmitt inverter. The relay-race FLL/PLL high-speed timing acquisition device can obtain stable and high speed timing acquisition by means of the frequency delimiter.