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    • 2. 发明公开
    • NETWORK FOR MULTIMEDIA ASYNCHRONOUS TRANSFER MODE DIGITAL SIGNAL TRANSMISSION AND COMPONENTS THEREOF
    • 网络用于转移移转给传输的数字信号及其组件异步模式MULDITMEDIA-
    • EP0879519A1
    • 1998-11-25
    • EP97901489.0
    • 1997-02-03
    • Xinex Networks Inc.
    • SZKOPEK, Lech, A.KIND, Douglas, A.
    • H04L12
    • H04L12/6418H04L12/417H04L2012/5638H04L2012/6427
    • Apparatus and methods for transmitting digital multimedia signals in asynchronous transfer mode over unshielded twisted pair wiring in a multipoint topology in an improved cost-effective manner. The multimedia digital signals originate from and are received by a plurality of receiving stations connected via twisted pair wiring. The method comprises feeding input digital signals selected from the group consisting of voice, fax, video and data from signal nodes; controlling allocation of bandwidth to the input digital signals as between sending stations; providing a source data stream in binary format derived from allocated input digital signals; converting a source data stream into a digital symbol stream capable of being transmitted over the wiring; driving and filtering the digital symbol stream over the wiring; splitting the filtered digital symbol stream into a plurality of replicated digital symbol streams; amplifying and selecting each of the plurality of replicated digital symbol streams to provide an amplified and selected digital symbol stream; converting the amplified and selected digital symbol stream into a sink data stream in binary format; identifying and selecting desired digital signals of the sink data stream for the plurality of the receiving stations; and delivering the identified and selected digital signals to signal nodes.
    • 9. 发明公开
    • MULTI-FUNCTION LIGHT SENSOR FOR VEHICLE
    • 多FINCH TION光传感器,车辆
    • EP0910525A1
    • 1999-04-28
    • EP98921198.0
    • 1998-05-13
    • Hegyi, Dennis J.
    • Hegyi, Dennis J.
    • B60S1
    • B60S1/0822B60S1/0818B60S1/0833B60S1/0888Y10S15/15Y10S318/02
    • A system for detecting the presence of rain droplets on a windshield employs a source of radiant energy, such as an LED (70), and a photodetector installed on the instrument panel of a vehicle. The LED (70) and the photodiode (85) are arranged with respect to one another such that light from the LED (70) cannot reflect directly off the windshield (81) onto the photodiode (85). Only when the light from the LED is back scattered by an environmental condition, such as the raindrops on the exterior (82) of the windshield, the condensation of moisture on the interior (80) of the windshield, or the presence of smoke in the cabin, will the photodiode receive the light from the LED. Each of these environmental conditions has a predeterminable characteristic signature that permits the processing of data to detect same. An ambient light signal is subtracted from the combination of the rain and ambient light signals by pulsed operation of the LED and subtracting the ambient light signal, which is detected when the LED is dark, from the combined LED and ambient light signal which is present when the LED is illuminated. A further LED (100) is provided to effect a fog detection system that detects condensation on the interior of the vehicle windshield. The further LED (100) illuminates the photodiode in a manner whereby the light on the photodiode is reduced when condensation is present. Also, a monitoring arrangement that employs a separate light sensor provides compensation for variances resulting from component aging and thermal influences.