Inter-device communication system
First Claim
1. An inter-device communication system for a wiper control apparatus that includes a wiper driving device for operating a wiper and a rain detection device and controls an operation of the wiper for removing raindrops on a windshield glass by the wiper driving device in accordance with an amount of raindrops detected by the rain detection device, the inter-device communication system comprising:
- a communication means having a single transmission line for unidirectionally sending a signal to one of the wiper driving device and the rain detection device;
a transmission means, arranged in the one of the wiper driving device and the rain detection device, for short-circuiting a potential of the signal unidirectionally sent through the transmission line; and
a recognition means, arranged in the other of the wiper driving device and the rain detection device, for recognizing transmitting information from the one of the wiper driving device and the rain detection device to the other of the wiper driving device and the rain detection device, the transmitting information being transmitted in response to the short-circuited signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An inter-device communication system for a wiper control apparatus that includes a rain detection device and a wiper driving device includes communication circuits having a transmission line for unidirectionally sending a rain detection signal to the wiper driving device, a transmission circuit arranged in the wiper driving device for short-circuiting a potential of the signal unidirectionally sent through the transmission line, and a recognition circuit arranged in the rain detection device for recognizing transmitting information sent in an opposite direction to a direction of the unidirectional transmission, i.e., from the wiper driving device to the rain detection device based on the short-circuited signal.
6 Citations
16 Claims
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1. An inter-device communication system for a wiper control apparatus that includes a wiper driving device for operating a wiper and a rain detection device and controls an operation of the wiper for removing raindrops on a windshield glass by the wiper driving device in accordance with an amount of raindrops detected by the rain detection device, the inter-device communication system comprising:
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a communication means having a single transmission line for unidirectionally sending a signal to one of the wiper driving device and the rain detection device; a transmission means, arranged in the one of the wiper driving device and the rain detection device, for short-circuiting a potential of the signal unidirectionally sent through the transmission line; and a recognition means, arranged in the other of the wiper driving device and the rain detection device, for recognizing transmitting information from the one of the wiper driving device and the rain detection device to the other of the wiper driving device and the rain detection device, the transmitting information being transmitted in response to the short-circuited signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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a rain detector; a wiper driver that operates a wiper, which removes raindrops on a windshield glass, in accordance with an amount of raindrops detected by the rain detector; and a single transmission line for unidirectionally sending a signal from the rain detector to the wiper driver; wherein the wiper driver includes circuitry that short-circuits a potential of the signal unidirectionally sent through said single transmission line; and the rain detector includes circuitry that recognizes transmitting information from the wiper driver which is transmitted in response to the short-circuited signal and in a direction opposite to a direction of said signal unidirectionally sent through said single transmission line. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification