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1. 发明授权

US5049766A Delay measuring circuit 失效
标题翻译：延时测量电路
公开(公告)号：US5049766A
公开(公告)日：1991-09-17
申请号：US493593
申请日：1990-03-15
申请人： Hans van Driest , Hendrik van Bokhorst , Richard Kruithof
发明人： Hans van Driest , Hendrik van Bokhorst , Richard Kruithof
IPC分类号： G01R25/08 , G01R29/027
CPC分类号： G01R25/08 , G01R29/0273
摘要： In a delay measuring circuit (10), an input clock signal (13) is applied to a multitapped delay line (14), the output taps of which are connected to a switch (26) which selects one of the switch inputs for connection to a phase comparator (34) which compares the input clock signal (13), delayed in a delay device (38) to compensate for the delay inherent in the switch (26), with the output of the switch (26). The input clock signal is also applied to a counter (22), and when the phase comparator (34) detects a phase match, the counter value is stored in a latch (32), the counter (22) is reset to a predetermined value, and the counting procedure resumed. The latch (32) thus always stores a value dependent on the delay of an individual delay cell (16-l to 16-N). This stored value can be applied to various uses, such as in a timing watchdog circuit or for generating accurate delays.

2. 发明授权

US5003562A Digital phase lock loop decoder 失效
标题翻译：数字锁相环解码器
公开(公告)号：US5003562A
公开(公告)日：1991-03-26
申请号：US493546
申请日：1990-03-14
申请人： Hans van Driest , Hendrik van Bokhorst , Richard Kruithof
发明人： Hans van Driest , Hendrik van Bokhorst , Richard Kruithof
IPC分类号： H03M5/12 , H04L7/033 , H04L7/04
CPC分类号： H04L7/0331 , H03M5/12 , H04L7/046
摘要： A digital phase lock loop decoder for use in decoding Manchester encoded data operates at an internal clock speed having a speed equal to the data rate of the encoded data. The decoder includes a first sampling circuit for providing signals based on the clock speed of the encoded data, a delay circuit for generating delayed clock signals relative to the clock speed of the encoded data, a second sampling circuit for sampling the encoded data based on the delayed clock signals, a feedback circuit for generating clock signals whose phase corresponds with the phase of the delayed clock signals and a storage for outputting decoded data signals corresponding to the encoded data utilizing the delayed clock signals.

3. 发明授权

US07010058B2 Wireless local area network apparatus 失效
公开(公告)号：US07010058B2
公开(公告)日：2006-03-07
申请号：US10681267
申请日：2003-10-09
申请人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
发明人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04L27/04 , H04L7/00
CPC分类号： H04W52/0216 , H04L7/04 , H04L27/04 , H04W56/009 , H04W76/27 , H04W84/12 , H04W88/02 , H04W88/022 , Y02D70/142
摘要： A wireless local area network apparatus includes a transmitter and a receiver in which operation of the receiver is accurately synchronized with periodic signals from the transmitter. The periodic signals contain timing data indicating the state of a timer in the transmitter at the time the signal containing that data was transmitted and this timing data is retrieved from the signal when received by the receiver and loaded in a timer for controlling operation of the receiver.

4. 发明授权

US07289578B2 Wireless local area network apparatus 失效
标题翻译：无线局域网设备
公开(公告)号：US07289578B2
公开(公告)日：2007-10-30
申请号：US11331919
申请日：2006-01-13
申请人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
发明人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04L27/00 , H04L7/00 , H04B1/16
CPC分类号： H04W52/0216 , H04L7/04 , H04L27/04 , H04W56/009 , H04W76/27 , H04W84/12 , H04W88/02 , H04W88/022 , Y02D70/142
摘要： A wireless local area network apparatus includes a transmitter and a receiver in which operation of the receiver is accurately synchronized with periodic signals from the transmitter. The periodic signals contain timing data indicating the state of a timer in the transmitter at the time the signal containing that data was transmitted and this timing data is retrieved from the signal when received by the receiver and loaded in a timer for controlling operation of the receiver.
摘要翻译：无线局域网设备包括发射机和接收机，其中接收机的操作与来自发射机的周期性信号精确同步。周期性信号包含指示在发送包含该数据的信号时发送器中定时器的状态的定时数据，并且该定时数据在由接收器接收时被从信号中检索并被加载在用于控制接收器的操作的定时器中。

5. 发明授权

US5706428A Multirate wireless data communication system 失效
标题翻译：多速率无线数据通信系统
公开(公告)号：US5706428A
公开(公告)日：1998-01-06
申请号：US615408
申请日：1996-03-14
申请人： Jan Boer , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Hendrik van Bokhorst , Hans van Driest
发明人： Jan Boer , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04B1/707 , H04L12/28 , H04L12/56 , H04Q1/30
CPC分类号： H04B1/707 , H04B2201/70703 , H04W28/22 , H04W4/12 , H04W84/12
摘要： A wireless LAN includes first stations adapted to operate at a 1 or a 2 Mbps data rate and second stations adapted to operate at a 1,2,5 or 8 Mbps data rate. The 1 and 2 Mbps rates use DBPSK and DQPSK modulation, respectively. The 5 and 8 Mbps rates use PPM/DQPSK modulation. All four data rates use direct sequence spread spectrum (DSSS) coding. All transmitted messages start with a preamble and header at the 1 Mbps rate. The header includes fields identifying the data rate for the data portion of the message, and a length field. For a 2 Mbps transmission the length field identifies the number of bytes in the data field. For a 5 or 8 Mbps the length field identifies the number of bytes in the data field which, if transmitted at 2 Mbps, would take the same transmission time of the data field, and is thus a fraction 2/5 or 2/8 of the actual number of the bytes. With this arrangements, all the stations are interoperable in a co-existent manner in the LAN.
摘要翻译：无线LAN包括适于以1或2Mbps数据速率操作的第一站和适于以1,2,5或8Mbps数据速率操作的第二站。 1和2Mbps速率分别使用DBPSK和DQPSK调制。 5和8 Mbps速率使用PPM / DQPSK调制。所有四种数据速率都使用直接序列扩频（DSSS）编码。所有发送的消息以1 Mbps速率从前同步码和报头开始。标题包括标识消息的数据部分的数据速率的字段和长度字段。对于2Mbps传输，长度字段标识数据字段中的字节数。对于5或8 Mbps，长度字段标识数据字段中的字节数，如果以2 Mbps发送，则将占用数据字段的相同传输时间，因此为小数+ E，fra 2/5 + EE或+ E，fra 2/8 + EE的实际字节数。通过这种安排，所有的台站可以在局域网中以共存的方式进行互操作。

6. 发明授权

US07421038B2 Wireless local area network apparatus 失效
标题翻译：无线局域网设备
公开(公告)号：US07421038B2
公开(公告)日：2008-09-02
申请号：US11726840
申请日：2007-03-23
申请人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
发明人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04L27/04 , H04L7/00
CPC分类号： H04W52/0216 , H04L7/04 , H04L27/04 , H04W56/009 , H04W76/27 , H04W84/12 , H04W88/02 , H04W88/022 , Y02D70/142
摘要： In one embodiment, a method of transmitting data from a transmitter in a wireless local area network (WLAN), where the transmitter has a timer and a modem. The transmitter periodically transmits a transmission signal that includes a timestamp field that includes a timestamp for synchronizing a receiver timer in a receiver of the WLAN. The timestamp, which represents a value within the count sequence of the transmitter timer, accounts for delays in the modem.
摘要翻译：在一个实施例中，一种从无线局域网（WLAN）中的发射机发射数据的方法，其中发射机具有定时器和调制解调器。发射机周期性地发送包括时间戳字段的发送信号，该时间戳字段包括用于同步WLAN接收机中的接收机定时器的时间戳。表示发射机定时器的计数序列中的值的时间戳记考虑了调制解调器的延迟。

7. 发明申请

US20080037467A1 WIRELESS LOCAL AREA NETWORK APPARATUS 审中-公开
标题翻译：无线本地网络设备
公开(公告)号：US20080037467A1
公开(公告)日：2008-02-14
申请号：US11776220
申请日：2007-07-11
申请人： Wilhelmus Diepstraten , Hendrik van Bokhorst , Hans van Driest
发明人： Wilhelmus Diepstraten , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04Q7/00
CPC分类号： H04W52/0216 , H04L7/04 , H04L27/04 , H04W56/009 , H04W76/27 , H04W84/12 , H04W88/02 , H04W88/022 , Y02D70/142
摘要： A wireless local area network apparatus includes a transmitter and a receiver in which operation of the receiver is accurately synchronized with periodic signals from the transmitter. The periodic signals contain timing data indicating the state of a timer in the transmitter at the time the signal containing that data was transmitted and this timing data is retrieved from the signal when received by the receiver and loaded in a timer for controlling operation of the receiver.
摘要翻译：无线局域网设备包括发射机和接收机，其中接收机的操作与来自发射机的周期性信号精确同步。周期性信号包含指示在发送包含该数据的信号时发送器中定时器的状态的定时数据，并且该定时数据在由接收器接收时被从信号中检索并被加载在用于控制接收器的操作的定时器中。

8. 发明授权

US06707867B2 Wireless local area network apparatus 失效
标题翻译：无线局域网设备
公开(公告)号：US06707867B2
公开(公告)日：2004-03-16
申请号：US10092295
申请日：2002-03-07
申请人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
发明人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04L700
CPC分类号： H04W52/0216 , H04L7/04 , H04L27/04 , H04W56/009 , H04W76/27 , H04W84/12 , H04W88/02 , H04W88/022 , Y02D70/142
摘要： A wireless local area network apparatus includes a transmitter and a receiver in which operation of the receiver is accurately synchronized with periodic signals from the transmitter. The periodic signals contain timing data indicating the state of a timer in the transmitter at the time the signal containing that data was transmitted and this timing data is retrieved from the signal when received by the receiver and loaded in a timer for controlling operation of the receiver.
摘要翻译：无线局域网设备包括发射机和接收机，其中接收机的操作与来自发射机的周期性信号精确同步。周期性信号包含指示在发送包含该数据的信号时发送器中定时器的状态的定时数据，并且该定时数据在由接收器接收时被从信号中检索并被加载在用于控制接收机的操作的定时器中。

9. 发明授权

US5987033A Wireless lan with enhanced capture provision 失效
标题翻译：无线网络具有增强的捕获条件
公开(公告)号：US5987033A
公开(公告)日：1999-11-16
申请号：US925416
申请日：1997-09-08
申请人： Jan Boer , Hendrik van Bokhorst , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Rienk Mud , Hans van Driest , Robert John Kopmeiners
发明人： Jan Boer , Hendrik van Bokhorst , Wilhelmus Josephus Diepstraten , Adriaan Kamerman , Rienk Mud , Hans van Driest , Robert John Kopmeiners
IPC分类号： H04L12/28 , H04B7/00 , H04L12/413 , H04Q7/00
CPC分类号： H04W74/0816 , Y02B60/50
摘要： A receiver, and a method for operating the receiver, for a station in a wireless local area network using a common wireless communication channel and employing a CSMA/CA (carrier sense multiple access with collision avoidance) protocol includes various modes. In normal mode, the receiver follows typical states in order to detect a message and demodulate data from the message properly. Meanwhile, a process implements a message-in-message (MIM) mode when an energy increase above a specified level is detected. While in the MIM mode, if a carrier is detected, the energy increase is caused by a new message; otherwise, the energy increase is caused by an interfering station. If the carrier is detected, the receiver begins retraining so that it can start receiving the new message as soon as the first message ends. If no carrier is detected, the receiver waits a specified time to detect a carrier or for the end of the first message, after which the receiver returns to the beginning of the normal mode. While in the normal mode, if a message is detected that is not addressed to the station, the receiver enters a hunt mode. While in the hunt mode, the receiver waits for the current message to finish. At the same time, a process implements retraining when both an energy increase above a specified level and a carrier are detected. If no carrier is detected within a specified time, or if the energy level decreases below the specified level, the receiver returns to the beginning of the normal mode.
摘要翻译：使用公共无线通信信道和采用CSMA / CA（具有冲突避免的载波侦听多路访问）协议的无线局域网中的站的接收机和操作接收机的方法包括各种模式。在正常模式下，接收机遵循典型状态，以便检测消息并正确地解调消息中的数据。同时，当检测到高于指定电平的能量增加时，处理实现消息消息（MIM）模式。在MIM模式下，如果检测到载波，则能量增加是由新信息引起的; 否则，能量增加是由干扰站造成的。如果检测到载波，则接收机开始重新训练，以便在第一个消息结束时，它可以开始接收新消息。如果没有检测到载波，则接收机等待指定的时间来检测载波或第一个消息的结束，接收机返回到正常模式的开始。在正常模式下，如果检测到没有寻址到站的消息，则接收机进入寻线模式。在寻线模式下，接收机等待当前消息完成。同时，当检测到高于指定水平的能量增加和载波时，过程实施再训练。如果在指定时间内没有检测到载波，或者能量水平降低到指定的电平以下，则接收机返回正常模式的开始。

10. 发明授权

US5422887A Medium access protocol for wireless local area network 失效
标题翻译：无线局域网的媒体接入协议
公开(公告)号：US5422887A
公开(公告)日：1995-06-06
申请号：US257233
申请日：1994-06-09
申请人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst
发明人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst
IPC分类号： H04L12/28 , H04J3/24
CPC分类号： H04W74/0816 , H04W4/06 , H04W84/12
摘要： A station which broadcasts a frame of information over a wireless local area network, waits a predetermined time calculated to allow other stations to gain access to the network, and thereafter broadcasts another frame of information. A method is provided which improves access fairness while reducing the collision probability, thereby increasing data throughput in the network.
摘要翻译：通过无线局域网广播信息帧的站等待计算的预定时间以允许其他站访问网络，然后广播另一帧信息。提供一种提高访问公平性同时降低冲突概率的方法，从而增加网络中的数据吞吐量。

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