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:
Jun. 22, 1993
Filed:
Nov. 19, 1991
Kazuyuki Tsunoda, Tokyo, JP;
Masahiro Matai, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a radio communication apparatus for selectively receiving call signals indicative of call numbers, respectively, a decoder receives, in cooperation with a P-ROM, each of the call signals as a received signal and processes the received signal into a common call tone signal representative of reception of the received signal regardless of the call numbers. The decoder makes a tone generator generate a common tone in response to the common call tone signal to indicate arrival of reception of one of the call signals. When a manual operable switch is operated, the decoder makes the tone generator stop generation of the common tone and classify the received signal into one of individual tone signals corresponding to the respective call numbers. Subsequently, the decoder makes the tone generator generate a particular tone indicating the call number of the received signal in question. When the switch is again operated, the decoder makes the tone generator stop generation of the particular tone.