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:
Jan. 04, 1994
Filed:
Oct. 28, 1991
Achim Herzberger, Nurnberg, DE;
Paul Presslein, Ebermannstadt, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A demultiplexer for an isochronous multiplex signal is described which signal consists of isochronous sub-signals interleaved block by block. The demultiplexer comprises a read-write memory (MXA, MXB, MXC, MXD) as well as a read-write control (ST). The proposed circuit arrangement may be devised in a highly advantageous manner as an integrated circuit because it is has been considered that, for example, the manufacturers of gate arrays leave the user only the choice of using building blocks depicted in a catalogue. These building blocks constitute the function blocks (MXA to MXD) which are provided for partitioning an STM-16 signal into four sub-signals (STM4A, STM4B, STM4C, STM4D). The control signals for these function blocks (TL15:0, Z(3:0), T311, T622) are produced by a control circuit (ST) whose central module is a four-stage cyclic counter. The necessary control signals are derived from the count of the cyclic counter by means of addressable demultiplexers.