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    • 9. 发明申请
    • Super High Pressure Mercury Lamp
    • 超高压汞灯
    • US20100148690A1
    • 2010-06-17
    • US12374653
    • 2007-07-19
    • Hideyuki Matsumoto
    • Hideyuki Matsumoto
    • H05B41/36
    • H05B41/2928G03B21/2026H01J61/86
    • An extra-high pressure mercury lamp in which wear of an electrode is kept small even if a temperature of an electrode on the side of an opening portion of a reflector of an arc tube is increased to be higher than that of an electrode on the side of a neck portion of the reflector to generate a difference in temperature between both electrodes of the arc tube. The extra-high pressure mercury lamp is an extra-high pressure mercury lamp 10 of AC lighting system provided with an arc tube 1 including a first electrode 3a positioned on the side of an opening portion 20 of a reflector 5 and a second electrode 3b positioned on the side of a neck portion 5a of the reflector 5 and including mercury sealed inside. When AC lamp current is supplied to the extra-high pressure mercury lamp 10 to perform lighting, a current pulse having the same polarity as that of the AC lamp current is superimposed on the AC lamp current, and pulse width of the current pulse to the first electrode 3a is made larger than that of the current pulse to the second electrode 3b.
    • 即使电弧管的反射器的开口部分的电极的温度升高到高于侧面的电极的电极的温度,电极的磨损也保持较小的超高压汞灯 的反射器的颈部以产生电弧管的两个电极之间的温度差。 超高压汞灯是具有发光管1的交流照明系统的超高压汞灯10,其包括位于反射器5的开口部20侧的第一电极3a和位于反射体5的开口部20侧的第二电极3b 在反射器5的颈部5a的侧面,并且包括密封在内部的汞。 当交流灯电流被提供给超高压汞灯10进行照明时,具有与交流灯电流相同极性的电流脉冲叠加在交流灯电流上,并将电流脉冲的脉冲宽度叠加到 使得第一电极3a比第二电极3b的电流脉冲大。
    • 10. 发明申请
    • FRAME SYNCHRONIZER, FRAME SYNCHRONIZATION METHOD AND DEMODULATOR
    • 框架同步器,框架同步方法和解调器
    • US20100135335A1
    • 2010-06-03
    • US12597527
    • 2008-04-25
    • Hideyuki MatsumotoTetsuhiro FutamiAtsushi MakitaTakashi YokokawaDoan Tien DungYuichi Mizutani
    • Hideyuki MatsumotoTetsuhiro FutamiAtsushi MakitaTakashi YokokawaDoan Tien DungYuichi Mizutani
    • H04J3/06
    • H04L7/08H04H20/74H04H40/90H04L27/2656H04L27/2675
    • The present invention relates to a frame synchronizer, frame synchronization method and demodulator which can more positively establish frame synchronization of an input signal which is likely to have a plurality of frame lengths.A differential correlation detector 151 calculates a differential correlation value with no pilot which is associated with the absence of a pilot signal inserted in the input signal and a differential correlation value with a pilot which is associated with the presence of a pilot signal inserted in the input signal. The frame period confirmation counters 152-1 and 152-3 perform, based on the differential correlation values with no pilot, frame synchronization control appropriate to the input signals whose frame lengths are 21690 and 32490 symbols, respectively. The frame period confirmation counters 152-2 and 152-4 perform, based on the differential correlation values with a pilot, frame synchronization control appropriate to the input signals whose frame lengths are 22194 and 33282 symbols, respectively.The present invention is applicable, for example, to a satellite broadcast receiver.
    • 帧同步器,帧同步方法和解调器技术领域本发明涉及帧同步器,帧同步方法和解调器,其可以更可靠地建立可能具有多个帧长度的输入信号的帧同步。 差分相关检测器151计算与没有插入在输入信号中的导频信号不相关的导频的差分相关值以及与插入在输入端中的导频信号的存在相关联的导频的差分相关值 信号。 帧周期确认计数器152-1,152-3分别基于不具有导频的差分相关值,分别对帧长度分别为21690和32490的输入信号进行适合的帧同步控制。 帧周期确认计数器152-2,152-4分别基于具有导频的差分相关值,分别对帧长度为22194和33282符号的输入信号进行适合的帧同步控制。 本发明可以应用于例如卫星广播接收机。