Facsimile and static presentation processing – Facsimile – Auxiliary signal
Patent
1996-12-10
1998-09-22
Vu, Kim Yen
Facsimile and static presentation processing
Facsimile
Auxiliary signal
358436, 358442, H04N 132
Patent
active
058122818
ABSTRACT:
A communication apparatus, such as a facsimile machine, for transmitting and receiving data to and from a device, includes a transmitter for receiving a first signal from the device and transmitting, in response to the first signal, a second signal for a predetermined time period. The transmitter receives a third signal from the device in response to the second signal, and transmits a fourth signal when the third signal is not received within the predetermined time period and transmits a fifth signal when the third signal is received within the predetermined time period. The transmitter receives a sixth signal from the device in response to the fourth signal. A detector, connected to the transmitter, detects which of the third signal and the sixth signal is received from the device. A controller, connected to the transmitter and the detector, controls a protocol of transmission and receipt of the data.
REFERENCES:
patent: 5349634 (1994-09-01), Shimomura
patent: 5381240 (1995-01-01), Murayama
patent: 5406388 (1995-04-01), Matsuzaki
patent: 5585938 (1996-12-01), Imamura
patent: 5661568 (1997-08-01), Ueno
Mukai Hirokazu
Nagata Minoru
NEC Corporation
Vu Kim Yen
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