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. 03, 1999
Filed:
Dec. 17, 1996
Arnoldus W Oomen, Eindhoven, NL;
Marc E Groenewegen, Utrecht, NL;
Robbert G Van Der Waal, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A transmitter provided with a subband coder is disclosed. The transmitter receives a wideband digital information at an input 1 and provides an output signal for transmission at an output (30). The input signal may have a varying sampling frequency (f.sub.g). The bitrate of the output signal is substantially constant. In order to compensate for the varying sampling frequency of the input signal, the transmitter is provided with a buffer memory (8) and a detector (18) for determining the filling degree of the memory (8). The control signal so derived, which is representative of the filing degree, is supplied to the bitallocation information generation unit (10). The bitpool B is varied in response to the control signal so as to control the filling degree to a nominal value, such as half full (FIG. 1). Further a receiver is disclosed for receiving the transmitted wideband digital information signal.