Line connection switching apparatus for connecting communication

Details Line connection switching apparatus for connecting communication Line connection switching apparatus for connecting communication

1990-02-01

1991-12-17

Dwyer, James L.

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

379 88, 358438, 381 43, H04M 1100, H04M 164

Patent

active

050739212

ABSTRACT:
A line connection switching apparatus performs connection switching of a communication line used both for speech communication performed by a telephone set and data communication performed by a facsimile apparatus and is inserted between the telephone set and the facsimile apparatus, and the communication line. When predetermined speech command information is input from a caller side through the communication line, a speech signal is detected by a switching unit. When a voice/silence discriminator discriminates that the speech signal represents voice, a voice interval monitor monitors a duration of the speech signal. If the duration of the speech signal falls within a predetermined range, the speech signal is stored in a speech signal storage unit. A pattern matching unit verifies whether a standard speech pattern of a speech signal registered in standard pattern dictionary unit matches with a speech pattern of the input speech signal stored in the speech signal storage unit. In accordance with a verification result, if the speech pattern of the input speech signal coincides with the standard pattern, the switching unit switches connection of the communication line to the facsimile apparatus.

REFERENCES:
patent: 3377428 (1968-04-01), Dersch
patent: 4063031 (1977-12-01), Grunza
patent: 4764966 (1988-08-01), Einkauf et al.
patent: 4794637 (1988-12-01), Hashimoto
patent: 4815121 (1989-03-01), Yoshida
patent: 4837797 (1989-06-01), Freeny, Jr.
patent: 4910506 (1990-03-01), Yoshida et al.

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