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:
May. 07, 2002
Filed:
May. 14, 1998
Nobuo Furuya, Kawagoe, JP;
Kokusai Denshin Denwa Kabushiki Kaisha, Tokyo, JP;
Abstract
A control system for transmission devices equipped with a high-efficiency coding scheme in a communication network which avoids degradation of the quality of an acoustic signal for transmission and permits an efficient transfer of the acoustic signal. The control system has a structure in which: information on a high-efficiency coding scheme used in the preceding transmission device is sent to the current exchange from the preceding one through the use of an out-band signaling system for transmitting and receiving a call control signal via a channel different from a speech channel; and based on the information sent to the current exchange, second-placed transmission devices connected to the current and following exchanges avoid effectively decoding/coding of the acoustic signal transferred thereto, or the use of these transmission devices is avoided.