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. 04, 1996
Filed:
May. 19, 1993
Isamu Ozawa, Hachioji, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a telephone exchange apparatus or a facsimile data broadcasting apparatus incorporating facsimile communication facility for broadcasting image data to a plurality of facsimile apparatuses, image data is concurrently broadcasted by sharing a single facsimile modem. In this case, the apparatus has (1) an arrangement wherein transmission of image data is assigned to the facsimile modem, and transmission/reception of control signals is assigned to a plurality of V.21 modems corresponding in number to facsimile apparatuses as broadcasting destinations, (2) an arrangement wherein transmission of image data and control signals is assigned to the facsimile modem, and reception of control signals is assigned to a plurality of V.21 demodulators corresponding in number to facsimile apparatuses as broadcasting destinations, and (3) an arrangement wherein transmission of image data and control signals is assigned to the facsimile modem, and reception of control signals is assigned to a plurality of V.21 demodulators fewer than the facsimile apparatuses as broadcasting destinations by adding a V.21 demodulator switching facility.