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    • 5. 发明申请
    • Satellite receiver system with time delayed signal
    • 具有延时信号的卫星接收机系统
    • US20070049240A1
    • 2007-03-01
    • US11217901
    • 2005-09-01
    • Jack KingRobert BurnhamPhilip Bator
    • Jack KingRobert BurnhamPhilip Bator
    • H05K11/02
    • H04H40/90G01S19/14H04H20/57H04H60/11H04H60/27
    • A satellite receiver system including an antenna, an amplifier, a tuner, a base band processor, and a buffer is provided. The antenna is configured to receive a satellite signal. The amplifier is in communication with the antenna and configured to generate an amplified signal based on the satellite signal. The tuner is in communication with the antenna and configured to receive the amplified signal. The tuner generates a program signal based on the amplified signal. The base band processor receives the program signal from the tuner and generates a plurality of data segments in the program signal at predefined time intervals. The base band processor stores the program signal in the buffer thereby causing a time delay in the program signal. If the satellite signal is interrupted, the tuner will continue to play out of the buffer without interruption.
    • 提供了包括天线,放大器,调谐器,基带处理器和缓冲器的卫星接收机系统。 天线被配置为接收卫星信号。 放大器与天线通信并被配置为基于卫星信号产生放大信号。 调谐器与天线通信并被配置为接收放大的信号。 调谐器基于放大的信号产生编程信号。 基带处理器从调谐器接收节目信号,并以预定的时间间隔在节目信号中产生多个数据段。 基带处理器将程序信号存储在缓冲器中,从而导致程序信号中的时间延迟。 如果卫星信号中断,调谐器将继续播放缓冲区而不会中断。
    • 6. 发明授权
    • Wavelength tuning of quantum well heterostructure lasers using an
external grating
    • 使用外部光栅的量子阱异质结构激光器的波长调谐
    • US4589115A
    • 1986-05-13
    • US530555
    • 1983-09-09
    • Robert BurnhamNick Holonyak, Jr.Harlan F. Chung
    • Robert BurnhamNick Holonyak, Jr.Harlan F. Chung
    • H01S3/1055H01S5/14H01S5/34H01S5/343H01S3/101
    • B82Y20/00H01S3/1055H01S5/141H01S5/34H01S5/3418H01S5/3425H01S5/3432
    • The method of and apparatus for tuning the wavelength using an external diffraction grating is accomplished with a quantum well injection laser wherein the range of operating wavelength selection is extended beyond the expectations of wavelength selection in fundamental emission spectrum of conventional bulk-crystal heterostructure lasers to include wavelength selection at the multiple carrier recombination transition energies possible in the conduction band sub-bands and valence band sub-bands present in quantum well heterostructures of single or multiple quantum well lasers. Quantum well heterostructure lasers have a unique advantage over previous tuned semiconductor lasers, as exemplified in the previously cited prior art, in that the active region of the quantum well laser can be bandfilled to well above the bulk crystal band edge at moderate current densities indicative of excellent candidates for broad band tuning through a wide range of the quantum well sub-bands of the quantum well structure.
    • 使用外部衍射光栅调谐波长的方法和装置通过量子阱注入激光器实现,其中工作波长选择的范围被扩展到常规体晶体异质结构激光器的基本发射光谱中的波长选择的期望以包括 在单载波或多个量子阱激光器的量子阱异质结构中存在的导带子带和价带子带中的多载波复合跃迁能量处的波长选择。 量子阱异质结构激光器具有优于之前调谐的半导体激光器的独特优点,如先前引用的现有技术中所例示的那样,量子阱激光器的有源区域可以以适当的电流密度填充到阱晶体带边缘以上, 通过量子阱结构的量子阱子带的宽范围宽带调谐的优秀候选者。