Signal transmission apparatus using an isolator, modem, and information processor
AssigneeHitachi, Ltd.
InventorsNobuyasu Kanekawa, Kazuo Kato, Yasuyuki Kojima, Seigoh Yukitake
Life of this patent
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Abstract
The signal x to be transmitted is converted to the redundant code f(x) by the redundancy coder 6 and transmitted via the isolating capacitor 2 of the isolator 50. When the signal f(x) redundancy-coded and transmitted is the coded word f(xi), the decoder 7 outputs xi which is inferred as an equivalent original signal and when an error occurs and the signal f(x) does not match the coded word f(xi), the decoder 7 corrects the error and outputs xi which is inferred as an original signal.
Claims9
A signal transmission apparatus comprising:
- a redundancy coder for redundancy-coding an input signal, said redundancy coder adding error detection and correction code to the input signal;
- a decoder for decoding a signal redundancy-coded by said redundancy coder;
- and
- an isolator for electrically insulating said redundancy coder and said decoder and also transmitting information from said redundancy coder to said decoder.
A signal transmission apparatus comprising:
- a redundancy coder for redundancy-coding an input signal;
- a decoder for decoding a signal redundancy-coded by said redundancy coder;
- and
- an isolator for electrically insulating said redundancy coder and said decoder and also transmitting information from said redundancy coder to said decoder,
- wherein said isolator has a differential amplifier for outputting a signal from said redundancy coder as a complementary signal, a differentiating circuit comprising a capacitor and a resistor for generating a differential signal for each output signal of said differential amplifier, and a regenerative circuit for generating said input signal from each said differential signal generated by said differentiating circuit.
A signal transmission apparatus comprising:
- a redundancy coder for redundancy-coding an input signal, said redundancy coder adding error detection and correction code to the input signal;
- a decoder for decoding a signal redundancy-coded by said redundancy coder;
- and
- an isolator for electrically insulating said redundancy coder and said decoder and also transmitting information from said redundancy coder to said decoder,
- wherein when said inputted signal is a non-coded word, said decoder outputs an already decoded signal.
A signal transmission apparatus comprising:
- a redundancy coder for redundancy-coding an input signal, said redundancy coder adding error detection and correction code to the input signal;
- a decoder for decoding a signal redundancy-coded by said redundancy coder;
- and
- an isolator for electrically insulating said redundancy coder and said decoder and also transmitting information from said redundancy coder to said decoder,
- wherein said redundancy coder, said decoder, and said isolator are formed on the same semiconductor substrate.
A signal transmission apparatus comprising
- a redundancy coder for redundancy-coding a digital signal, said redundancy coder adding error detection and correction code to the input signal;
- a decoder for decoding a signal redundancy-coded by said redundancy coder,
- a converter for converting an output of said decoder to an analog signal, and
- an isolator for electrically insulating said redundancy coder and said decoder and also transmitting information from said redundancy coder to said decoder, wherein at least said redundancy coder, said decoder, and said isolator are formed on the same semiconductor substrate.
Dependencies are inferred from the claim text.