Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent
1991-04-25
1993-10-19
Ng, Jin F.
Telephonic communications
Telephone line or system combined with diverse electrical...
To produce visual-graphic copy
358434, 358468, H04M 1100
Patent
active
052553116
ABSTRACT:
A data communication apparatus operates in a first switching mode in order to switch over between data communication and speech communication depending upon whether or not a signal indicating data communication mode is received within a predetermined period of time; a as well as second switching mode which switches over between data communication and speech communication depending upon whether or not a response signal to a procedure signal is received within a predetermined period of time. The apparatus has a detector that detects a state of the apparatus, and it selects one of the first and second switching modes.
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Patent Abstracts of Japan, vol. 12, No. 335, (E-656), Sep. 9, 1988.
Patent Abstracts of Japan, vol. 13, No. 195 (E-754) (3543), May 10, 1989.
Canon Kabushiki Kaisha
Chan Jason
Ng Jin F.
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