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1. 发明申请

WO1993021734A1 A CODING TECHNIQUE FOR HIGH DEFINITION TELEVISION SIGNALS 审中-公开
标题翻译：高分辨率电视信号的编码技术
公开(公告)号：WO1993021734A1
公开(公告)日：1993-10-28
申请号：PCT/US1993003117
申请日：1993-04-09
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , LEE, Lin-Nan , RAO, Ashok, Kolar , BHARGAVA, Sanjai
IPC分类号： H04N07/13
CPC分类号： G06T9/008 , H04N19/30 , H04N19/94
摘要： A coding technique for high-definition television signals involves splitting the luminance signal into four sub-bands using a sub-band encoder (11) and separately encoding (12) each sub-band using a simplified vector quantization technique. The characteristics of each respective simplified vector quantization encoder can be matched to the characteristics of the respective sub-bands.
摘要翻译：用于高清晰度电视信号的编码技术涉及使用子带编码器（11）将亮度信号分成四个子带，并且使用简化的矢量量化技术分别编码（12）每个子带。每个各自的简化矢量量化编码器的特性可以与各个子带的特性相匹配。

2. 发明申请

WO1992022161A1 FULLY MESHED CDMA NETWORK FOR PERSONAL COMMUNICATIONS TERMINALS 审中-公开
标题翻译：完整的CDMA网络个人通信终端
公开(公告)号：WO1992022161A1
公开(公告)日：1992-12-10
申请号：PCT/US1992004204
申请日：1992-05-29
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , FANG, Russell, J.
IPC分类号： H04L27/30
CPC分类号： H04J13/00 , H04B7/216 , H04L5/02 , H04L2007/045 , Y02D70/22 , Y02D70/26 , Y02D70/446
摘要： A network of personal communications terminals (10), also called pico terminals, communicating in CDMA mode includes a reference station for transmitting a pilot tone that is pre-corrected at the reference and is used at the remaining stations for frequency control, transmit power control, and antenna acquisition and tracking. All pico terminals (10) are in the same uplink beam (12) and downlink beam (14). Each pico terminal (10) is given a unique PN code for receiving signals intended for receipt by that terminal. Voice activation is used for sharing the satellite transponder power and bandwidth in a fully Demand-Assignment-Multiple-Accessing (DAMA) manner. Uplink power control is used to mitigate the CDMA near-far problem.
摘要翻译：也称为微微终端的个人通信终端（10）网络，其以CDMA模式进行通信包括用于发送在参考时预校正的导频音的参考站，并在其余站用于频率控制，发射功率控制，天线采集跟踪。所有微微终端（10）处于相同的上行链路波束（12）和下行链路波束（14）中。给每个微微终端（10）提供一个唯一的PN码，用于接收预期由该终端接收的信号。语音激活用于以完全按需分配多址（DAMA）方式共享卫星转发器功率和带宽。上行链路功率控制用于减轻CDMA近距离问题。

3. 发明申请

WO1983001881A1 A SECURITY SYSTEM FOR SSTV ENCRYPTION 审中-公开
标题翻译：用于SSTV加密的安全系统
公开(公告)号：WO1983001881A1
公开(公告)日：1983-05-26
申请号：PCT/US1982001631
申请日：1982-11-19
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , LEE, Lin-nan , FANG, Russell, J.
IPC分类号： H04M01/32
CPC分类号： H04N7/1675
摘要： In a secure communications system, a key number which is changed periodically, e.g. monthly, and a random number from a random number generator are combined and used as a seed to reset a PN sequence generator, with the output of the generator being used to control encryption of transmission data in a signal processor. The key is also provided to a first encipherer to encipher the random number for transmission with the encrypted data. At the receiver, the key is provided on common to a decipherer for deciphering the random number and a PN sequence generator which is periodically reset by the combination of the key and random number in the same manner as in the transmitter. The PN sequence is then used to decrypt the information. User identification codes are stored in the transmitter and are used to encipher the key, with each employing its ID code to decipher the key. The user ID codes are known only to the system operator, so that not even a particular user can know the key.

4. 发明申请

WO1993011605A1 DIGITAL DEMODULATOR FOR PREAMBLE-LESS BURST COMMUNICATIONS 审中-公开
标题翻译：数字式解调器用于无阻塞通信
公开(公告)号：WO1993011605A1
公开(公告)日：1993-06-10
申请号：PCT/US1992010018
申请日：1992-11-27
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , RHODES, Smith, A.
IPC分类号： H03D01/00
CPC分类号： H04L27/2332 , H03D1/00 , H04L7/0029 , H04L7/0334 , H04L7/04 , H04L7/10 , H04L2027/0048 , H04L2027/0085
摘要： Digital demodulator processing (Fig. 5) is accomplished for the reception of burst transmission (401) without preamble overhead (Fig. 3b) for synchronization acquisition. It is assumed that the modulation technique is either binary phase-shift keying (BPSK) (250) or quarternary phase-shift keying (QPSK) (250). The required synchronization (506), filtering (504, 505) and detection (512) functions for the demodulator are performed sequentially by repeated digital processing of stored complex baseband samples (501) of the received transmission burst (401).
摘要翻译：完成数字解调器处理（图5），用于接收无前同步码开销的突发传输（401）（图3b），用于同步采集。假设调制技术是二进制相移键控（BPSK）（250）或者三次相移键控（QPSK）（250）。通过对所接收的传输脉冲串（401）的存储的复基带采样（501）的重复数字处理，顺序地执行用于解调器的所需同步（506），滤波（504,505）和检测（512）功能。

5. 发明申请

WO1993006675A1 NONBLOCKING MULTICAST FAST PACKET/CIRCUIT SWITCHING NETWORKS 审中-公开
标题翻译：非锁定多播快速分组/电路切换网络
公开(公告)号：WO1993006675A1
公开(公告)日：1993-04-01
申请号：PCT/US1992007978
申请日：1992-09-25
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , SHYY, Dong-Jye
IPC分类号： H04L12/56
CPC分类号： H04L45/74 , H04L45/16 , H04L45/60
摘要： A self-routing nonblocking multicast switching network (Fig. 4, Fig. 5, Fig. 6, Fig. 7, or Fig. 8) routes input messages to destined addresses by examining a routing tag (Fig. 3b, Fig. 3c and Fig. 3d) combined in each message. The routing tag (Fig. 3b, Fig. 3c and Fig. 3d) has a plurality of sections (301, 302, 303, 304) each section corresponding to a level of a tree hierarchy (Fig. 3a) related to the outputs of the switching network. The network sorts the messages by examining only one section of each routing tag and routes and sorted messages to the destined addresses based on the bits contained in the routing tags.
摘要翻译：自路由非阻塞组播交换网络（图4，图5，图6，图7或图8）通过检查路由标签将输入消息路由到目的地址（图3b，图3c和图3d）组合在每个消息中。路由标签（图3b，图3c和图3d）具有多个部分（301,302,303,304），每个部分对应于与等级相关的树分级（图3a）交换网络。网络通过仅检查每个路由标签的一个部分并基于路由标签中包含的位置将目的地址路由和排序的消息进行排序。

6. 发明申请

WO1993002506A1 PROGRAMMABLE NOISE BANDWIDTH REDUCTION BY MEANS OF DIGITAL AVERAGING 审中-公开
标题翻译：通过数字平均方法可编程噪声减少带宽
公开(公告)号：WO1993002506A1
公开(公告)日：1993-02-04
申请号：PCT/US1992005849
申请日：1992-07-16
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , POKLEMBA, John, J.
IPC分类号： H04B01/10
CPC分类号： H04B1/1027 , H04B2001/1054
摘要： A pre-averager for digitally averaging the samples of an input data signal (26) over two or more symbols, the averaging interval being defined by the input sampling rate divided by the output sampling rate. As the averaged sample is clocked (29o, 29e) to a suitable detector at a much slower rate than the input signal sampling rate the noise bandwith at the input to the detector is reduced. The pre-averager forms a data filter (50a, 50b, 50c, 50d) having an output sampling rate of one sample per symbol of received data. More specifically, selected ones of a plurality of samples accumulated (28a, 28b, 28c, 28d) over two or more symbol intervals are output in response to clock signals at a rate of one sample per symbol interval. The pre-averager includes circuitry (40, 44) for weighting digitized signal using stored finite impulse response (FIR) filter coefficients (42).
摘要翻译：一种用于对两个或多个符号进行输入数据信号（26）的采样进行数字平均的预平均器，平均间隔由输入采样率除以输出采样速率来定义。由于平均采样以比输入信号采样速率慢得多的速率将时钟（29o，29e）定时到合适的检测器，因此降低了检测器输入端的噪声带宽。预均分器形成数据滤波器（50a，50b，50c，50d），每个符号的接收数据具有一个样本的输出采样率。更具体地，响应于每个符号间隔的一个样本的速率的时钟信号输出在两个或更多符号间隔上累积（28a，28b，28c，28d）的多个样本中的选定的样本。预平均器包括用于使用存储的有限脉冲响应（FIR）滤波器系数（42）对数字化信号进行加权的电路（40,44）。

7. 发明申请

WO1983002687A1 LOW IMPEDANCE COPLANAR MICROWAVE TRANSMISSION LINE 审中-公开
标题翻译：低阻抗共振微波传输线
公开(公告)号：WO1983002687A1
公开(公告)日：1983-08-04
申请号：PCT/US1983000051
申请日：1983-01-13
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , STEGENS, Ronald E.
IPC分类号： H01P03/08
CPC分类号： H01P3/003
摘要： A small, very low impedance coplanar waveguide microwave transmission line. A composite coplanar waveguide transmission line section composed of a plurality of interleaved fingers (14, 16, 21, 23) is coupled between input and output transmission line sections. Alternate ones of the interleaved fingers are connected to a main conductor (12) of the input and output transmission line sections and to a metal ground plane layer (11). The composite transmission line section may be connected either in cascade with the input and output transmission line sections or in a shunt arrangement. Composite characteristic impedances of less than two ohms are realized.
摘要翻译：一个小的，非常低阻抗的共面波导微波传输线。由多个交错指状物（14,16,21,23）组成的复合共面波导传输线部分耦合在输入和输出传输线部分之间。交替的手指中的交替的指状物连接到输入和输出传输线部分的主导体（12）和金属接地平面层（11）。复合传输线部分可以与输入和输出传输线部分级联或者在分流装置中级联连接。实现了小于2欧姆的复合特性阻抗。

8. 发明申请

WO1994009571A1 AUTOMATIC GAIN CONTROL FOR REDUCING EFFECTS OF JAMMING 审中-公开
标题翻译：自动增益控制降低JAMMING的影响
公开(公告)号：WO1994009571A1
公开(公告)日：1994-04-28
申请号：PCT/US1992009009
申请日：1992-10-29
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , ARNSTEIN, Donald, S. , LEE, Jong, W.
IPC分类号： H04B01/26
CPC分类号： H04K3/228 , H04B1/1027 , H04B7/18515 , H04B2001/1063
摘要： Improved automatic gain control (18) for an amplifier (10) is obtained by controlling the size of a null zone in a drive signal (26) for the amplifier (10). The size of the null zone is controlled by estimating strength of an interference signal, and dynamically varying the size of the null zone based on the estimated strength of the interference signal. As a result, the amplifier (10) rarely saturates, regardless of signal strength. The invention is useful to reduce the harmful effects of jamming or interference.
摘要翻译：通过控制用于放大器（10）的驱动信号（26）中的零区域的大小来获得放大器（10）的改进的自动增益控制（18）。通过估计干扰信号的强度并基于干扰信号的估计强度来动态地改变空区的大小来控制空区的大小。结果，无论信号强度如何，放大器（10）很少饱和。本发明有助于减少干扰或干扰的有害影响。

9. 发明申请

WO1993006676A1 NONBLOCKING POINT-TO-POINT FAST PACKET/CIRCUIT SWITCHING NETWORKS 审中-公开
标题翻译：非点对点快速分组/电路切换网络
公开(公告)号：WO1993006676A1
公开(公告)日：1993-04-01
申请号：PCT/US1992007979
申请日：1992-09-25
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , SHYY, Dong-Jye
IPC分类号： H04L12/56
CPC分类号： H04L49/25 , H04J2203/0005 , H04J2203/0012 , H04L49/1507 , H04L49/201 , H04L49/254 , H04L49/30 , H04L49/3018
摘要： A point-to-point multicast nonblocking self-routing switching apparatus (Fig. 4) receives input messages, each destined to a particular output of the switching apparatus. Each input message has a routing tag (Figs. 2b, 2c, 2d) made up of a plurality of one-bit sections (Figs. 2b, 2c, 2d), each section relating to a level (1-a) of a tree hierarchy (Fig. 2a) of the outputs of the switching apparatus. The input messages are distributed through the apparatus on their way to their respective outputs, by routing the messages through a plurality of switches. Input messages destined for odd-numbers outputs are initially sent to one group of switches and messages destined for even-numbered outputs are initially sent to another group of switches.
摘要翻译：点对点组播非阻塞自路由交换设备（图4）接收输入消息，每个输入消息都指向交换设备的特定输出。每个输入消息具有由多个一比特部分（图2b，2c，2d）组成的路由标签（图2b，2c，2d），每个部分涉及树的级别（1-a）开关装置的输出的层级（图2a）。输入消息在通过多个交换机路由消息的途中通过设备分发到它们各自的输出。最初向目的地为奇数输出的输入消息发送到一组交换机，并且目的地为偶数输出的消息最初被发送到另一组交换机。

10. 发明申请

WO1993006630A1 NARROW BAND-PASS, WIDE BAND-STOP FILTER 审中-公开
标题翻译：窄带带通，宽挡带滤波器
公开(公告)号：WO1993006630A1
公开(公告)日：1993-04-01
申请号：PCT/US1992007914
申请日：1992-09-24
申请人： COMMUNICATIONS SATELLITE CORPORATION
发明人： COMMUNICATIONS SATELLITE CORPORATION , BONETTI, Rene, R. , WILLIAMS, Albert, E.
IPC分类号： H01P05/12
CPC分类号： H01P1/2082 , H01P1/2138
摘要： The present invention is directed to reducing the number of components required to minimize intermodulation distortion within the wide transmission frequency band used by a satellite communications repeater system. In particular, at least one TM010 mode cavity (32) is cascaded to a plurality of TE113 mode cavities (33) to form a narrow band-pass, wide band-stop filter for receiving and outputting channel signals to the multiplexer manifold (36) of a satellite repeater. The multiplexer filter thus constructed realizes the narrow band-pass response required in microwave communications, while eliminating the spurious resonance frequencies normally eliminated by additional filter components. In this manner, the size and weight considerations of the satellite system are improved without loss in performance.

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