Multiplex communications – Generalized orthogonal or special mathematical techniques – Level multiplex
Reexamination Certificate
2007-08-21
2007-08-21
Shah, Chirag G. (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Level multiplex
C326S030000, C326S086000, C327S108000, C327S524000
Reexamination Certificate
active
10336723
ABSTRACT:
The invention provides a technique that enables a correct discrimination of reception data, when the supply voltage of a semiconductor integrated circuit having a simultaneous bi-directional interface is decreased. The data transmission system is provided with input circuits constituting a simultaneous bi-directional interface by the number of reference voltages used. Each of the input circuits is supplied with a fixed reference voltage, the input circuit supplied with a higher reference voltage employs a differential amplifier with n-channel MOSFETs served as input differential devices, and the input circuit supplied with a lower reference voltage employs a differential amplifier with p-channel MOSFETs served as input differential devices, in which selectors switch the outputs of the two differential amplifiers in correspondence with the output data of their own. Thus, the system attains the reception data.
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Fujimura Yasuhiro
Takahashi Toshiro
Toyoshima Shunsuke
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Reed Smith LLP
Shah Chirag G.
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