Facsimile machine using ISDN basic interface
AssigneeRicoh Company, Ltd.
InventorsMitsuji Sawada, Masahito Ohtani
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Abstract
A facsimile machine in conformity with an information services digital network (ISDN) basic interface having a single signal channel and two information channels, includes a communication circuit, which has a first device of exchanging transmission and reception image signals with an ISDN through one of the two information channels (B-channels), a second device of exchanging the transmission and reception image signals with the ISDN through the other information channel, a third device of separately establishing the two information channels through the single signal channel, and a fourth device of controlling the first and second devices to independently exchange the transmission and reception image signals with the ISDN in parallel.
Claims15
A facsimile machine in conformity with an information services digital network (ISDN) basic interface having a single signal channel and two information channels, comprising:
- generating means for generating an image signal to be transmitted;
- communicating mans for sending a transmission image signal to a destination terminal coupled to an information services digital network (ISDN) and for receiving a reception image signal supplied form a source terminal coupled to said ISDN, said transmission image signal being said image signal supplied from said generating means;
- and
- recording means for recording an image formed by said reception image signal on a recording medium,
- said communicating means including:
- first means for exchanging said transmission and reception image signals with said ISDN through one of said two information channels;
- second means for exchanging said transmission and reception image signals with said ISDN through the other information channel;
- first control means for separately establishing said two information channels through said single signal channel;
- and
- second control means for controlling said first and second means so as to independently exchange said transmission and reception image signals with said ISDN in parallel and for generating first and second transmission procedures respectively related to said first and second means when the two information channels are used for simultaneously transmitting transmission image signals in parallel in accordance with said first and second transmission procedures so that the first nd second means simultaneously transmit the transmission image signals to the ISDN through the two information channels in parallel.
A facsimile machine in conformity with an information services digital network (ISDN) basic interface having a single signal channel and two information channels, comprising:
- generating means for generating an image signal to be transmitted;
- first storage means for storing a transmission image signal which is said image signal supplied form said generating means;
- second storage mans for storing information related to a plurality of broadcase destination terminals to which said transmission image signal is to be transmitted;
- communicating means for sending said transmission image signal to said broadcast destination terminals coupled to an information services digital network (ISDN) and for receiving a reception image signal supplied form a source terminal coupled to said ISDN;
- and
- recording means for recording an image formed by said reception image signal on a recording media,
- said communicating means including:
- first means for exchanging said transmission and reception image signals with said ISDN through one of said two information channels,
- second means for exchanging said transmission and reception image signals with said ISDN through the other information channel,
- determining means for determining whether or nor said two information channels are busy,
- first control means for establishing said two information channels through said single signal channel,
- selecting means for selecting two of said broadcast destination terminals stored in said second storage means when said two information channels becomes available, and
- second control means for reading out said transmission image signal from said first storage means and for transferring said readout transmission image signal to said first and second means, so that said transmission image signal is simultaneously supplied, in parallel, to said two of said broadcast destination terminals through said two information channels by said first and second means.
Dependencies are inferred from the claim text.