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    • 2. 发明授权
    • Data communication system
    • 数据通信系统
    • US4583090A
    • 1986-04-15
    • US312367
    • 1981-10-16
    • Richard C. EdenIra DeyhimyTimothy J. Quilici
    • Richard C. EdenIra DeyhimyTimothy J. Quilici
    • H04H20/34H04H60/13H04Q9/00
    • H04H20/34H04H60/13H04H2201/70Y10T307/25
    • A data communication system for general purposes having a new ternary carrier frequency shift keying (TCSK) signal. The system is applied to a utility load control by transmission of a sub-carrier of an FM broadcast channel. It is decoded by a receiver, SCA decoder, TCSK filter and a two level or binary converter and used to communicate to a pre-programmed microprocessor which enables various load control functions to be performed. The general system also is given for a QPSK (quadraphase shift keying) operating system.A data transmission filter is split between the transmitter and receiver and is operated in cascade to give individual interference filtering at each end of the transmission while also providing combined action and wave shaping. A high accuracy FM decoder using zero crossing detection enables data recovery with simple circuits. A novel random time load restoration circuit for ramp-up is disclosed. A fail safe relay operator is also disclosed.The TCSK employs a novel 19 character hex code format which is 8 bit microprocessor compatible and directly usable for other purposes such as ASCII message transmission. Both QPSK and TCSK systems offer command structures of variable length so as to permit truncation of message and reduce total message transmit time.
    • 一种用于通用目的的数据通信系统,具有新的三元载波频移键控(TCSK)信号。 该系统通过FM广播频道的子载波的发送应用于公用事业负载控制。 它由接收机,SCA解码器,TCSK滤波器和二电平或二进制转换器解码,用于与预编程的微处理器进行通信,从而实现各种负载控制功能。 一般系统也适用于QPSK(四通道移位键控)操作系统。 数据传输滤波器在发射机和接收机之间分离,并且级联操作,以在传输的每一端给出单独的干扰滤波,同时还提供组合动作和波形整形。 使用过零检测的高精度FM解码器能够利用简单的电路进行数据恢复。 公开了一种用于斜升的新颖的随机时间加载恢复电路。 还公开了一种故障安全继电器操作器。 TCSK采用了一种新颖的19字符十六进制码格式,与8位微处理器兼容,可直接用于其他目的,如ASCII消息传输。 QPSK和TCSK系统都提供可变长度的命令结构,以便允许消息的截断并减少总的消息发送时间。
    • 6. 发明授权
    • Narrow-band inverted homo-heterojunction avalanche photodiode
    • 窄带反相同异质结雪崩光电二极管
    • US4110778A
    • 1978-08-29
    • US808496
    • 1977-06-21
    • Richard C. EdenKenichi Nakano
    • Richard C. EdenKenichi Nakano
    • H01L31/107H01L27/14
    • H01L31/107
    • A narrow-band, inverted homo-heterojunction avalanche photodiode, configured in the shape of a mesa situated upon a substrate which is transparent to selected light energy wavelengths. The diode is inverted for operation such that the incoming light energy enters the substrate side, passes through a wavelength selective buffer layer and is absorbed upon entering the succeeding, active region. Avalanche gain is attained by drift from the area of absorption to the high field p-n homo-heterojunction located immediately thereafter. The device exhibits low levels of noise during operation because absorption is occurring in a low field region and because the ionization and breakdown noise associated with lattice mismatches is avoided through the formation of the p-n homo-heterojunction in one continuous growth process. Appropriate passivation of the mesa walls inhibits surface leakage and breakdown effects.
    • 窄带,反相同异质结雪崩光电二极管,其被配置为位于对选择的光能波长透明的衬底上的台面形状。 二极管被反相操作,使得入射光能进入衬底侧,通过波长选择缓冲层,并在进入后续有源区时被吸收。 通过从吸收区域漂移到紧邻的高场p-n同异质结获得雪崩增益。 该装置在操作期间表现出低水平的噪声,因为在低场区域中发生吸收,并且由于通过在一个连续生长过程中形成p-n同异质结来避免与晶格失配相关的电离和击穿噪声。 台面壁的适当钝化可以抑制表面渗漏和击穿效应。
    • 8. 发明授权
    • Method and device for precise geolocation of low-power, broadband, amplitude-modulated signals
    • 低功耗,宽带,幅度调制信号精确定位的方法和装置
    • US06759983B2
    • 2004-07-06
    • US10107811
    • 2002-03-28
    • Richard C. Eden
    • Richard C. Eden
    • G01S302
    • G01S5/04G01S3/36G01S7/021
    • The invention relates to methods and devices for precise geolocation of low-power, broadband, amplitude-modulated rf and microwave signals having poor coherency. The invention provides a basis for dramatic improvements in RF receiver technology, offering much higher sensitivity, very strong rejection of unintended signals, and novel direction finding techniques. When mounted on an airborne surveillance platform, the invention can detect and geolocate weak, broadband, incoherent RF and/or microwave signals. Embodiments of the invention are implemented by dual channel receivers (heterodyne or tuned-RF) that use crystal detection and Fast Fourier Transform (FFT) analysis for geolocation. Geolocation is accomplished using a subsystem of phased arrays and an angle of arrival technique.
    • 本发明涉及具有差相干性的低功率,宽带,幅度调制rf和微波信号的精确地理定位的方法和装置。 本发明为RF接收机技术的显着改进提供了基础,提供了更高的灵敏度,非常强的拒绝非预期信号以及新颖的方向发现技术。 当安装在机载监视平台上时,本发明可以检测和定位弱,宽带,非相干RF和/或微波信号。 本发明的实施例由对待地理定位使用晶体检测和快速傅立叶变换(FFT)分析的双通道接收器(外差或调谐RF)来实现。 使用相控阵列子系统和到达角技术实现地理定位。
    • 10. 发明授权
    • Low power, high speed random access memory circuit
    • 低功耗,高速随机存取电路
    • US4575821A
    • 1986-03-11
    • US493093
    • 1983-05-09
    • Richard C. EdenGeorge R. Kaelin
    • Richard C. EdenGeorge R. Kaelin
    • G11C11/412G11C11/418G11C11/419G11C7/00G11C11/34
    • G11C11/418G11C11/412G11C11/419
    • A random access memory circuit for use with positive and negative supply voltages, a read enable line, an output line, and write "1" and "0" lines includes first, second, third, and fourth level shifting diodes. A first input isolation diode is connected between the write "1" line and the first level shifting diode. A second input isolation diode is connected between the write "0" line and the cathode of the third level shifting diode. The drain of a first write FET is connected to the anode of the third diode, the source is connected to the read enable line, and the gate is connected to the cathode of the second level shifting diode. A second write FET has its drain connected to the anode of the first level shifting diode, its source connected to the read enable line, and its gate connected to the cathode of the fourth diode. An output buffer FET is connected by its source to the read enable line, by its gate to the cathode of the fourth diode. An output isolation diode is connected between the drain of the output buffer FET and the output line.
    • 用于正电源电压和负电源电压的随机存取存储器电路,读使能线,输出线和写“1”和“0”线包括第一,第二,第三和第四电平移位二极管。 第一输入隔离二极管连接在写“1”线和第一电平移位二极管之间。 第二输入隔离二极管连接在写“0”线和第三电平转换二极管的阴极之间。 第一写FET的漏极连接到第三二极管的阳极,源极连接到读使能线,栅极连接到第二电平移位二极管的阴极。 第二写FET的漏极连接到第一电平移位二极管的阳极,其源极连接到读使能线,其栅极连接到第四二极管的阴极。 输出缓冲FET由其源极连接到读使能线,其栅极连接到第四二极管的阴极。 输出隔离二极管连接在输出缓冲FET的漏极和输出线之间。