公开(公告)号：US06510317B1

公开(公告)日：2003-01-21

申请号：US09435317

申请日：1999-11-04

Applicant: Paul D. Marko ,  Anh X. Nguyen

Inventor： Paul D. Marko ,  Anh X. Nguyen

IPC: H04B126

CPC classification number: H04B1/0057 ,  H04B1/005 ,  H04B1/28 ,  H04B7/18523

Abstract: A satellite digital audio radio receiver system and method. The inventive receiver includes a circuit for down-converting a first ensemble in a received combined signal in a first mode of operation and for down-converting a second ensemble from the received combined signal in a second mode of operation. The first ensemble includes a first signal received from a first transmitter, a second signal received from a second transmitter, and a third signal received from a third transmitter. The second ensemble includes a second signal from the first transmitter, a second signal from the second transmitter, and a second signal from the third transmitter. A controller is included to selectively switch the circuit from the first mode to the second mode. The first ensemble comprises first, second and third frequency slots and the second ensemble comprises fourth, fifth, and sixth frequency slots. In the illustrative embodiment, the first and second transmitters are mounted on first and second satellites and the third transmitter is a terrestrial repeater. Both ensembles are transmitted in accordance with the XM frequency plan. The first ensemble is down-converted using low side injection and the second ensemble down-converted using high side injection. The inventive circuit includes a synthesized frequency source. The circuit further includes a first intermediate frequency down-conversion stage with a first mixer for mixing the received combined signals with the output of synthesized frequency source. The circuit further includes first and second surface acoustic wave filters for separating the first and second signals received from the third signals. The inventive circuit further includes a second intermediate frequency down-conversion stage having second and third mixers for mixing the outputs of the first and second filters, respectively, with the output of a local oscillator.

Abstract translation: 卫星数字音频无线电接收机系统及方法。 本发明的接收机包括用于在第一操作模式中对接收到的组合信号中的第一集合进行下变频的电路，并且用于在第二操作模式中从所接收的组合信号中降频转换第二集合。 第一集合包括从第一发射机接收的第一信号，从第二发射机接收的第二信号和从第三发射机接收的第三信号。 第二组合包括来自第一发射机的第二信号，来自第二发射机的第二信号和来自第三发射机的第二信号。 包括控制器以选择性地将电路从第一模式切换到第二模式。 第一集合包括第一，第二和第三频率时隙，第二组合包括第四，第五和第六频率时隙。 在说明性实施例中，第一和第二发射机安装在第一和第二卫星上，第三发射机是陆地中继器。 两个乐团都按照XM频率计划传送。 第一组合使用低侧注射进行下变换，第二组合使用高侧注射进行下转换。 本发明的电路包括合成频率源。 该电路还包括具有第一混频器的第一中频降频转换级，用于将接收到的组合信号与合成频率源的输出进行混频。 电路还包括用于分离从第三信号接收的第一和第二信号的第一和第二声表面波滤波器。 本发明的电路还包括具有第二和第三混频器的第二中频降频转换级，用于将第一和第二滤波器的输出分别与本地振荡器的输出混合。

公开(公告)号：US06347216B1

公开(公告)日：2002-02-12

申请号：US09433863

申请日：1999-11-04

Applicant: Paul D. Marko ,  Craig P. Wadin

Inventor： Paul D. Marko ,  Craig P. Wadin

IPC: H04B169

CPC classification number: H04B7/18567 ,  H04B7/18547

Abstract: A method and apparatus for communicating geographic specific services to a receiver in a satellite communications network by utilizing location identification information included in a composite signal transmitted by a terrestrial repeater. A terrestrial repeater receives from a satellite a composite signal comprising a plurality of time-division multiplexed (TDM) data channels and retransmits the composite signal with a unique transmitter identification number which indicates the identity of the repeater. Upon reception of the composite signal from the terrestrial repeater, the receiver determines the current geographical location of the receiver based on the transmitter identification number. The receiver then compares the current location of the receiver to header information carried in the data channels to select information in the data channels is targeted to the geographical location of the receiver. The receiver then provides the selected information to a user of the receiver so that user may access services directed to audiences in the geographic location of the receiver.

Abstract translation: 一种用于通过利用由地面中继器发送的复合信号中包括的位置识别信息将地理特定业务传送到卫星通信网络中的接收机的方法和装置。 地面中继器从卫星接收包括多个时分多路复用（TDM）数据信道的复合信号，并用指示中继器的身份的唯一的发射机标识号重传合成信号。 在接收到来自地面中继器的复合信号时，接收机基于发射机标识号确定接收机的当前地理位置。 然后，接收机将接收机的当前位置与在数据信道中携带的标题信息进行比较，以选择数据信道中的信息针对接收机的地理位置。 然后，接收机将所选择的信息提供给接收机的用户，使得用户可以访问定向到接收机的地理位置中的观众的服务。

公开(公告)号：US6154452A

公开(公告)日：2000-11-28

申请号：US318938

申请日：1999-05-26

Applicant: Paul D. Marko ,  Craig P. Wadin ,  Joseph M. Titlebaum

Inventor： Paul D. Marko ,  Craig P. Wadin ,  Joseph M. Titlebaum

IPC: H03M13/27 ,  H04B7/195 ,  H04J3/00 ,  H04L1/00 ,  H04L1/08 ,  H04K1/10 ,  H04L1/02

CPC classification number: H04L1/0057 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/08

Abstract: A method of interleaving data for transmission is provided wherein first and second interleaving patterns for arranging data symbols in a source data stream into first and second transmitted data streams are selected. Each of said data symbols has at least one bit. The first and second transmitted data streams are transmitted substantially simultaneously on separate transmission channels to at least one receiver. The first and second patterns are used to transmit the data symbols in the source data stream in a different order on the respective transmission channels to maximize recovery of the source data stream when the transmission channels are blocked. The selected interleaving patterns can involve reordering the data symbols throughout the first and second transmitted data streams using different reordering criteria. The reordering criteria can vary on a frame-by-frame basis if the source data stream is time division multiplexed. Complementary data can be sent on respective transmission channels.

Abstract translation: 提供一种交织用于传输的数据的方法，其中选择用于将源数据流中的数据符号排列成第一和第二传输数据流的第一和第二交织模式。 所述数据符号中的每一个具有至少一个位。 第一和第二传输的数据流在单独的传输信道上基本上同时发送到至少一个接收机。 第一和第二模式用于在各个传输信道上以不同的顺序发送源数据流中的数据符号，以在传输信道被阻塞时使源数据流的恢复最大化。 所选择的交织模式可以包括使用不同的重新排序标准来重新排序整个第一和第二传输数据流中的数据符号。 如果源数据流是时分复用的，则重新排序标准可以逐帧地改变。 互补数据可以在相应的传输信道上发送。

公开(公告)号：US5687189A

公开(公告)日：1997-11-11

申请号：US308185

申请日：1994-09-19

Applicant: Sybren D. Smith ,  Paul D. Marko ,  Craig P. Wadin

Inventor： Sybren D. Smith ,  Paul D. Marko ,  Craig P. Wadin

IPC: H04B14/06 ,  H04L1/00

CPC classification number: H04L1/0059 ,  H04B14/068

Abstract: Noise in an ADPCM signal is muted or suppressed by modifying the magnitude of the ADPCM information during noisy conditions. In one method, the ADPCM data is changed to a predetermined magnitude value. In another method, the magnitude is reduced by a predetermined amount.

Abstract translation: 通过在噪声条件下修改ADPCM信息的大小，ADPCM信号中的噪声被抑制或抑制。 在一种方法中，ADPCM数据被改变为预定的幅度值。 在另一种方法中，幅度减小预定量。

公开(公告)号：US5499397A

公开(公告)日：1996-03-12

申请号：US236826

申请日：1994-05-02

Applicant: Craig P. Wadin ,  Paul D. Marko

Inventor： Craig P. Wadin ,  Paul D. Marko

IPC: H04B7/08 ,  H04B1/16

CPC classification number: H04B7/0814

Abstract: The present invention comprises a method and apparatus for selecting one of at least two antennas (202, 204) in a communication unit (200) for use in a wireless communication system (100). A signal is received by a radio frequency receiver during a receiving period from one of the at least two antennas (202, 204) currently selected by an antenna switch (206), the signal transmitted in a digital communications format comprising a plurality of bits. The quality of the receive signal is determined by a switch diversity algorithm programmed into a microcomputer (212) that bases the decision to switch antennas on predetermined thresholds established for each of: a received signal strength indicator, a phase error signal, and a recovered clock signal.

Abstract translation: 本发明包括一种在通信单元（200）中选择无线通信系统（100）中的至少两个天线（202,204）中的一个的方法和装置。 在由天线开关（206）当前选择的至少两个天线（202,204）之一的接收周期期间，由射频接收机接收信号，该信号以包括多个比特的数字通信格式发送。 接收信号的质量由编程到微型计算机（212）中的开关分集算法确定，微机（212）将决定切换到天线以为每个建立的预定阈值：接收信号强度指示符，相位误差信号和恢复时钟 信号。

公开(公告)号：US5471146A

公开(公告)日：1995-11-28

申请号：US76218

申请日：1993-06-14

Applicant: Paul D. Krayeski ,  Paul D. Marko ,  Stelios J. Patsiokas

Inventor： Paul D. Krayeski ,  Paul D. Marko ,  Stelios J. Patsiokas

IPC: G01R31/28 ,  H04B1/00

CPC classification number: H04B17/318

Abstract: A return loss meter (100) for base stations comprises a first transceiver (10) having a first transmitter (12), a first receiver (22 and 30), and a first antenna (20), a second transceiver (50) having a second transmitter (52), a second receiver (62 and 70), and a second antenna (60), wherein the first transceiver and the second transceiver are cross-coupled using at least one directional coupler (16) capable of being switched. The return loss meter includes a device for measuring reflected and transmitted power of the first antenna via a first directional coupler (16) capable of being switched and via a device (74) capable of measuring received signal strength at the second receiver and a device for measuring reflected and transmitted power of the second antenna via a second directional coupler (56) capable of being switched and via a device (34) capable of measuring received signal strength at the first receiver.

Abstract translation: 用于基站的回波损耗计（100）包括具有第一发射机（12），第一接收机（22,30）和第一天线（20）的第一收发器（10），第二收发器（50） 第二发射机（52），第二接收机（62和70）以及第二天线（60），其中所述第一收发机和所述第二收发机使用能够被切换的至少一个定向耦合器（16）进行交叉耦合。 回波损耗计包括用于经由能够被切换的第一定向耦合器（16）来测量第一天线的反射和发射功率的装置，并且经由能够测量第二接收机处的接收信号强度的装置（74） 经由能够切换的第二定向耦合器（56）测量第二天线的反射和发射功率，以及经由能够测量第一接收机的接收信号强度的设备（34）。

公开(公告)号：US5436937A

公开(公告)日：1995-07-25

申请号：US11926

申请日：1993-02-01

Applicant: David L. Brown ,  Paul D. Marko

Inventor： David L. Brown ,  Paul D. Marko

IPC: H03L7/08 ,  H03L7/099 ,  H04L7/033 ,  H03D3/24

CPC classification number: H03L7/0992 ,  H03L7/08 ,  H04L7/0331

Abstract: A multi-mode PLL circuit (100) includes an early/late bit transition accumulator (108) for accumulating the number of incoming bit transitions which are early or late. This allows for PLL (100) to provide adjustments based on a predetermined number of accumulated early/late accumulations or based on an average of early/late transitions over a predetermined period of time. PLL (100) further includes a frequency offset circuit (200) which includes a frequency error accumulator which is used to maintain a frequency offset history and to control the loop frequency. This allows for very narrow band operation of the first order digital PLL while maintaining stable operation.

Abstract translation: 多模式PLL电路（100）包括用于累加早期或晚期的输入位转换次数的早/晚位转换累加器（108）。 这允许PLL（100）基于预定数量的累加的早/晚累积或者基于在预定时间段内的早/晚转换的平均值来提供调整。 PLL（100）还包括频率偏移电路（200），其包括用于维持频率偏移历史并控制环路频率的频率误差累加器。 这允许一阶数字PLL的非常窄的频带操作，同时保持稳定的操作。

公开(公告)号：US5430769A

公开(公告)日：1995-07-04

申请号：US980056

申请日：1992-11-23

Applicant: Stelios J. Patsiokas ,  Craig P. Wadin ,  Paul D. Marko

Inventor： Stelios J. Patsiokas ,  Craig P. Wadin ,  Paul D. Marko

IPC: H04B7/02 ,  H04B7/08 ,  H04B7/26 ,  H04L1/06 ,  H04B7/10 ,  H04L1/02

CPC classification number: H04B7/0814

Abstract: The present invention comprises a method and apparatus for selecting one of at least two antennas (202, 204) in a communication unit (200) for use in a wireless communication system (100). A signal is received by a radio frequency receiver during a receiving period from one of the at least two antennas (202,204) currently selected by an antenna switch (206), the signal having a plurality of bits. The receiver is capable of determining the quality of the receive signal by determining if the incoming bits transition periods fall within a predetermined time window. If it is determined by the receiver that the quality of the receive signal is below a predetermined threshold the currently selected antenna (202 or 204) is switched. The currently selected antenna remains selected when the currently selected antenna has been selected within a predetermined amount of time.

Abstract translation: 本发明包括一种在通信单元（200）中选择无线通信系统（100）中的至少两个天线（202,204）中的一个的方法和装置。 在由天线开关（206）当前选择的至少两个天线（202,204）之一的接收周期期间，射频接收机接收信号，该信号具有多个比特。 接收机能够通过确定进入位过渡期是否落入预定时间窗内来确定接收信号的质量。 如果由接收机确定接收信号的质量低于预定阈值，则切换当前选择的天线（202或204）。 当在预定时间内选择了当前选定的天线时，当前选择的天线保持选择。

公开(公告)号：US5402448A

公开(公告)日：1995-03-28

申请号：US194760

申请日：1994-02-10

Applicant: Paul D. Marko ,  David L. Brown ,  Jaime A. Borras ,  Ronald E. Sharp

Inventor： Paul D. Marko ,  David L. Brown ,  Jaime A. Borras ,  Ronald E. Sharp

IPC: H04B1/38 ,  H04B1/44 ,  H04B7/26 ,  H04L7/033 ,  H04L7/08 ,  H04M1/725 ,  H04Q7/38 ,  H03D1/00

CPC classification number: H04B1/44 ,  H04M1/72505

Abstract: A transceiver (100) is provided for transmitting during the transmission bursts (12) of a frame and receiving during the receiving time-slot windows (14). The transceiver (100) includes a receiver (320) for receiving a repeating radio frequency data (16) signal at any time within the receiving time-slot window (14) and for demodulating the repeating radio frequency data signal down to a baseband data signal. A data detector and clock recovery device (330) recovers the valid data (CHMP) from the baseband data signal. For controlling the receiver (320) and data detector and clock recovery device (330), a control circuit (400) modifies the receiving time-slot windows (14) to only receive and detect when valid data is expected (52).

Abstract translation: 收发器（100）被提供用于在帧的传输脉冲串（12）期间进行传输并在接收时隙窗口（14）期间接收。 收发器（100）包括用于在接收时隙窗口（14）内的任何时间接收重复的射频数据（16）信号的接收机（320），并且将重复射频数据信号解调为基带数据信号 。 数据检测器和时钟恢复装置（330）从基带数据信号中恢复有效数据（CHMP）。 为了控制接收机（320）和数据检测器和时钟恢复装置（330），控制电路（400）修改接收时隙窗口（14），以仅在预期有效数据时接收和检测（52）。

公开(公告)号：US5303411A

公开(公告)日：1994-04-12

申请号：US883820

申请日：1992-05-11

Applicant: Robert E. Stengel ,  Paul D. Marko

Inventor： Robert E. Stengel ,  Paul D. Marko

IPC: H04B1/10

CPC classification number: H04B1/10

Abstract: A receiver (10) is provided where an information signal (11) is received (12) and examined to determine (20) its signal strength. When the signal strength is at least equal to a threshold, an unmodulated signal (40) is added to the received signal to improve the sensitivity of the receiver.

Abstract translation: 提供接收机（10），其中接收信息信号（11）（12）并进行检查以确定（20）其信号强度。 当信号强度至少等于阈值时，将未调制信号（40）加到接收信号上以提高接收机的灵敏度。