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:
Nov. 24, 1998
Filed:
Jul. 05, 1995
Ryujiro Muramatsu, Yokohama, JP;
Toshiro Suzuki, Tama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A telephone communication terminal responsive to a voice for originating a call includes an antenna, a diplexer, a radio unit, a base band unit, a controller, a loudspeaker, a microphone, a key input and display unit, a sound level measuring instrument, threshold generators, comparators, an analyzer, and a destination number storage. The sound level measuring instrument always measures the sound level of an input signal, such as a voice inputted from the microphone. The sound level measuring instrument conducts processing such as calculating signal power at fixed intervals. The output of the sound level measuring instrument is compared in a first comparator with the output of a first threshold generator outputting a preset threshold value. In the case where the output of the sound level measuring instrument is greater than the threshold value, a result of comparison is conveyed to the controller. The analyzer effects an analysis on an input signal and outputs information. The output of the analyzer is compared in a second comparator with lower and upper limit threshold values outputted from a second threshold generator.