RECEPTION CIRCUIT AND SIGNAL RECEPTION METHOD
First Claim
1. A reception circuit that operates based on a first power supply belonging to a first power supply system and receives, through an AC coupling element, a transmission signal output by a transmission circuit that operates based on a second power supply belonging to a second power supply system, the reception circuit comprising:
- a noise rejection unit that generates a transmission-use signal by reducing a signal level of noise between the power supplies, the noise being generated in the AC coupling element due to a potential difference between the first power supply and the second power supply; and
a reception buffer that reproduces a data signal based on the transmission-use signal.
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Accused Products
Abstract
A reception circuit according to the present invention is a reception circuit (6) that operates based on a first power supply GND1 belonging to a first power supply system and receives, through an AC coupling element (10), a transmission signal V1 output by a transmission circuit (5) that operates based on a second power supply GND2 belonging to a second power supply system, the reception circuit including: a noise rejection unit (21) that generates a transmission-use signal V2a by reducing a signal level of noise between the power supplies generated in the AC coupling element (10) due to a potential difference between the first power supply GND1 and the second power supply GND2; and a reception buffer (22) that reproduces a data signal based on the transmission-use signal. This prevents a malfunction from occurring due to noise between the power supplies caused by a relative potential variation between the power supply of the transmission circuit and the power supply of the reception circuit.
18 Citations
29 Claims
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1. A reception circuit that operates based on a first power supply belonging to a first power supply system and receives, through an AC coupling element, a transmission signal output by a transmission circuit that operates based on a second power supply belonging to a second power supply system, the reception circuit comprising:
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a noise rejection unit that generates a transmission-use signal by reducing a signal level of noise between the power supplies, the noise being generated in the AC coupling element due to a potential difference between the first power supply and the second power supply; and a reception buffer that reproduces a data signal based on the transmission-use signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A signal reception method for a reception circuit that operates based on a first power supply belonging to a first power supply system and receives, through an AC coupling element, a transmission signal output by a transmission circuit that operates based on a second power supply belonging to a second power supply system, the signal reception method comprising:
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generating a transmission-use signal by reducing a signal level of noise between the power supplies, the noise being generated in the AC coupling element due to a potential difference between the first power supply and the second power supply; and reproducing a data signal based on the transmission-use signal. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification