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:
Sep. 14, 2004
Filed:
Jan. 31, 2002
Dominicus Martinus Wilhelmus Leenaerts, Eindhoven, NL;
Eise Carel Dijkmans, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A quadrature coupled controlled oscillator comprising a first and a second circuit module, each of the circuit modules ( and ) comprising an astable multivibrator circuit ( ). The first circuit module is coupled with the second circuit module and the second circuit module is cross coupled with the first circuit module. Each of the circuit modules ( and ) comprises a first and a second Voltage Controlled Current Source ( ) (VCCS). In each of the circuit modules, each VCCS is coupled to a phase shifter ( ) for shifting the phase of a current ( ) supplied by the VCCS to a resonator ( ) included in that circuit module. A communication arrangement ( ) for communicating via a bi-directional communication channel ( ), comprises an oscillator ( ) as described above for generating a periodic signal. A receiving module ( ) generates an output signal from the periodic signal and a receiving signal received from the channel ( ). The arrangement further comprises an emission module ( ) for generating an emission signal for emitting to the channel from the periodic signal and an input signal.