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First Claim
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1. A CMOS monolithic circuit for communicating over a communications network comprising:
- an analog subsystem including means for receiving analog signals;
a digital subsystem including means for receiving digital message signals comprised of a predetermined number of serial bits and including an instruction portion and an address portion;
processor means for producing digital output signals responsive to said analog subsystem or said digital subsystem; and
means for transmitting said digital output signals over said communications network, and including means for transmitting a predetermined digital message over said communication network in response to a preselected instruction portion of a received message signal independently of said processor means.
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Abstract
A hybrid monolithic IC that is standardized for controlling various types of electrical equipment, such as circuit breakers, motor controllers and the like. The IC is a hybrid monolithic IC, fabricated in CMOS technology, The shortcomings of utilizing CMOS technology for linear or analog circuitry is overcome by the implementation of the IC to provide a monolithic IC that is relatively less expensive than using multiple ICs or a single IC fabricated from biCMOS technology.
98 Citations
11 Claims
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1. A CMOS monolithic circuit for communicating over a communications network comprising:
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an analog subsystem including means for receiving analog signals; a digital subsystem including means for receiving digital message signals comprised of a predetermined number of serial bits and including an instruction portion and an address portion; processor means for producing digital output signals responsive to said analog subsystem or said digital subsystem; and means for transmitting said digital output signals over said communications network, and including means for transmitting a predetermined digital message over said communication network in response to a preselected instruction portion of a received message signal independently of said processor means. - View Dependent Claims (2, 3)
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4. A device which includes a CMOS monolithic circuit for monitoring analog signals from an electrical device having an operate mode and a trip mode and generating an output signal and communication said output signal over a predetermined communications network, said CMOS monolithic circuit comprising:
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means for receiving analog signals; processor means for generating digital output signals as a function of said analog signals and including a digital status signal indicating a status of said device; and means for communicating said digital output signals over a predetermined communications network, and including means for storing said digital status signal generated by said processor means and transmitting the stored digital status signal over the predetermined communication network independent of said processor means in response to a message received over said predetermined communications network having a preselected instruction portion. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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Specification