Common controller area network interface
First Claim
1. An electronic interface for connecting to a network having a data stream placed on a bus high signal and a bus low signal, comprising:
- a ground synthesizer circuit, coupled to the bus high signal and bus low signal, configured to synthesize a ground from the bus high signal and bus low signal;
a capacitive isolator circuit, coupled to the ground synthesizer circuit, configured to generate an isolated bus high signal from the bus high signal; and
an edge triggering circuit, coupled to the capacitive isolator circuit, configured to regenerate the data stream into a first reconstructed data stream by comparing the isolated bus high signal with the ground.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic interface is provided for connecting to various types of networks. The network places a data stream on a bus high signal and a bus low signal. The interface includes a ground synthesizer circuit, a capacitive isolator circuit, and an edge triggering circuit. The ground synthesizer circuit, coupled to the bus high signal and bus low signal, synthesizes a ground from the bus high signal and bus low signal. The capacitive isolator circuit, coupled to the ground synthesizer circuit, generates an isolated bus high signal from the bus high signal. The edge triggering circuit, coupled to the capacitive isolator circuit, regenerates the data stream into a first reconstructed data stream by comparing the isolated bus high signal with the ground. The resulting circuit comprises a digital data receiver that may be part of a transceiver.
-
Citations
24 Claims
-
1. An electronic interface for connecting to a network having a data stream placed on a bus high signal and a bus low signal, comprising:
-
a ground synthesizer circuit, coupled to the bus high signal and bus low signal, configured to synthesize a ground from the bus high signal and bus low signal; a capacitive isolator circuit, coupled to the ground synthesizer circuit, configured to generate an isolated bus high signal from the bus high signal; and an edge triggering circuit, coupled to the capacitive isolator circuit, configured to regenerate the data stream into a first reconstructed data stream by comparing the isolated bus high signal with the ground. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of reconstructing an input data stream into an output data stream, comprising:
-
capacitively isolating the input data stream to form a data stream of edge pulses; comparing the data stream of edge pulses to a ground signal; and latching the output data stream high upon a positive edge pulse and latching the output data stream low upon a negative edge pulse to create the output data stream. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. An electronic interface for connecting to a network having a data stream placed on a bus high signal and a bus low signal, comprising:
-
a synthesizing means coupled to the bus high signal and the bus low signal for synthesizing a ground from the bus high signal and bus low signal; an isolating means coupled to the synthesizing means for receiving the bus high signal from the synthesizing means and the ground from the synthesizing means and for generating an isolated bus high signal from the bus high signal; and a reconstruction means coupled to the isolating means for receiving an isolated bus high signal and a ground and for reconstructing the data stream by comparing the isolated bus high signal with the ground.
-
-
21. An electronic interface for connecting to a network having a data stream placed on a bus high signal and a bus low signal, comprising:
-
a ground synthesizer circuit coupled to the bus high signal and the bus low signal and configured to create a synthesized ground from the bus high signal and bus low signal; and a capacitive isolator circuit coupled to the ground synthesizer circuit and for receiving the bus high signal and the bus low signal and configured to generate an isolated bus high signal from the bus high signal, an isolated bus low signal from the bus low signal, and an isolated ground from the synthesized ground. - View Dependent Claims (22, 23, 24)
-
Specification