Abstract: The present multi-media subscriber station has control unit and a plurality of communication devices. Each communication device includes speed dial controls which, when activated but a user, provide for establishing a communication session to a communication end point associated with the speed dial control. Each speed dial control is associated with a programmable image display on which an image associated with the communication end point may be displayed.
Abstract: An electromagnetic transducer, includes: a first diaphragm disposed in a vibratile manner; a second diaphragm provided in a central portion of the first diaphragm, the second diaphragm being formed of a magnetic material; a yoke disposed in a position opposing the first diaphragm; a center pole provided on a face of the yoke that opposes the first diaphragm; a coil substantially surrounding the center pole; a magnet substantially surrounding the coil; and a thin magnetic plate provided between the magnet and the first diaphragm, an inner periphery of the thin magnetic plate being in overlapping relation to an outer periphery of the second diaphragm.
Type:
Grant
Filed:
November 3, 1999
Date of Patent:
December 30, 2003
Assignee:
Matsushita Electric Industrial Co., Ltd.
Abstract: In the public switched telephone network, an originating modem can identify an answering modem, e.g., as to the type of modem it is, by detection of a low-level identification signal sent from the answering modem. The low-level identification signal is hidden within an industry standard "answer tone," e.g., a CCITT V.25 answer tone of 2100 Hz. If the low-level identification signal is detected by the originating modem, the industry standard "handshaking" procedure is terminated and a non-standard handshaking procedure is implemented. If the identification signal is not detected by the originating modem, the industry standard handshaking procedure is simply completed.
Type:
Grant
Filed:
May 7, 1992
Date of Patent:
May 10, 1994
Assignee:
AT&T Bell Laboratories
Inventors:
Gordon Bremer, Kurt E. Holmquist, Donald R. Laturell, Kenneth Martinez