Transmission device for transmitting a signal through a transmission line between circuits blocks having different power supply systems
AssigneeDenso Corporation
InventorsKiyoshi Yamamoto, Akitaka Murata, Tadashi Suzuki
Life of this patent
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Abstract
A transmission device includes a transmission line composed of first and second transmission lines. A first circuit block outputs a non-inverted transmission signal to the first transmission line, and a second output circuit outputs an inverted transmission signal to the second transmission line. The second circuit block comprises an impedance element and a comparison circuit for comparing voltages. The same types of impedance elements as the impedance element are interposed in the first and second transmission lines between the first circuit block and the second circuit block.
Claims20
A transmission device for transmitting signals from a first circuit block having a first power supply system through a transmission line to a second circuit block having a second power supply system, said transmission device comprising:
- the transmission line comprises a first transmission line and a second transmission line;
- the first circuit block comprises a first output circuit for outputting a non-inverted signal of the transmission signal to the first transmission line, and a second output circuit for outputting an inverted signal of the transmission signal to the second transmission line;
- the second circuit block comprises an impedance element connected between the first transmission line and the second transmission line, and a comparison circuit for comparing voltages at both the terminals of the impedance element and outputting a transmitted signal;
- and
- the same types of impedance elements as the impedance element are interposed in the first and second transmission lines between the first circuit block and the second circuit block.
A transmission device for transmitting signals from a circuit block operating under a first power supply system to a circuit block operating under a second power supply system, said transmission device comprising:
- a first output circuit for outputting a non-inverted signal of the transmission signal under the first power supply system;
- a second output circuit for outputting an inverted signal of the transmission signal under the first power supply system;
- first to N-th (N>3) impedance elements connected in series between the output terminal of the first output circuit and the output terminal of the second output circuit;
- and
- a comparison circuit for comparing voltages at both the terminals of any one impedance element of second to (N−1)-th impedance elements or at both the terminals of an impedance group of two or more series-connected impedance elements out of the second impedance element to the (N−1)-th impedance element, and outputting a transmitted signal.
Dependencies are inferred from the claim text.