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:
Feb. 17, 2004
Filed:
Jun. 07, 2000
Hirohumi Nakayama, Tokyo, JP;
Koichi Sawai, Yokohama, JP;
NTT Mobile Communications Network Inc., Tokyo, JP;
Abstract
Multiplex transmission apparatus on the transmitting side multiplexes received signals from non-voice signal input output apparatus and voice signal input output apparatus , and also transmits the multiplexed signal from communications network by digital portable telephone on the transmitting side. The digital portable telephone transmits a signal per 20 msec, so that multiplex transmission apparatus alternately transmits the voice signal and the non-voice signal at an interval of 20 msec, for example. Multiplex transmission apparatus sorts out the voice signal and the non-voice signal from the supplied signal by checking the error detecting code of the supplied signal. Multiplex transmission apparatus can judge the type of the signal according to the type of the error detecting code, because a different error detecting code is added to each signal.