Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1997-11-17
1999-08-17
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
327437, H03K 500
Patent
active
059399236
ABSTRACT:
A selectable low power signal line (10) is provided that includes a driver circuit (12) connected to receive an input signal for transmission and to receive a mode select signal (SELECT). The driver circuit (12) has a low power mode and a full power mode selectable responsive to the mode select signal (SELECT). The driver circuit (12) is operable, when in the full power mode, to drive an output signal at a full swing of the input signal. When in the low power mode, the driver circuit (12) is operable to drive the output signal at a fraction of the full swing of the input signal. A physical signal line (14) is connected to receive the output signal of the driver circuit (12) and to carry the output signal. A receiver circuit (16) is connected to receive the signal on the physical signal line (14) and is also connected to receive the mode select signal (SELECT). The receiver circuit (16) has a low power and full power mode selectable responsive to the mode select signal (SELECT). The receiver circuit (16) is operable, when in the full power mode, to drive an output signal at a full swing of the signal on the physical signal line (14). When in the low power mode, the receiver circuit (16) is operable to convert the signal on the physical signal line (14) from a fraction of the full swing of the input signal to a full swing of the input signal and to drive the output signal at the full swing.
REFERENCES:
patent: 5436585 (1995-07-01), Dimarco
patent: 5450356 (1995-09-01), Miller
patent: 5614859 (1997-03-01), Ong
patent: 5712586 (1998-01-01), Kitao
patent: 5793225 (1998-08-01), Gerson
Callahan Timothy P.
Donaldson Richard L.
Hasanzadah Maria
Hoel Carlton H.
Holland Robby T.
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