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1. 发明授权

US5982742A Multiple access simplex mode communication systems and methods therefor 失效
标题翻译：多路访问单工模式通信系统及其方法
公开(公告)号：US5982742A
公开(公告)日：1999-11-09
申请号：US985857
申请日：1997-12-05
申请人： Tai-che Leung , Kwok-viu Leung , Chi-keung Tang , Moun-lun Tai , Ming-lam Ng
发明人： Tai-che Leung , Kwok-viu Leung , Chi-keung Tang , Moun-lun Tai , Ming-lam Ng
IPC分类号： H04B7/26 , H04J13/00 , H04J13/02 , H04L12/28 , H04J3/10
CPC分类号： H04B7/2612
摘要： An asynchronous time-hopping multiple access "(ATHMA") protocol and a simplex mode communication system utilizing the same requires no synchronization between transmitting stations, no handshaking between transmitters and receivers and no system manager to coordinate data message transmission. The ATHMA protocol ensures that for an n-channel asynchronous simplex mode communication system, each transmitter repeatedly sends each unique data message n successive times according to its own time-hopping schedule. In the preferred embodiment the time-hopping schedules are coordinated such that at least one duplication of each unique message will not collide with any other messages over a given period. Thus, at most n-1 transmissions out of the total n transmissions of each unique data message will be collided and lost. The ATHMA protocol and communication system of the present invention is ideally suited for applications requiring a low throughput rate and channel capacity. The ATHMA protocol can be applied to various transmissions media such as radio, infrared optics and wired media with little or no modification.
摘要翻译：异步跳时多址“（ATHMA”）协议和使用该异步跳频多址通信系统的单工模式通信系统不需要发送站之间的同步，发射机和接收机之间没有握手，也没有系统管理员协调数据消息传输。 ATHMA协议确保对于n信道异步单工模式通信系统，每个发射机根据其自身的跳频计划重复地连续发送每个唯一的数据消息。在优选实施例中，时间跳跃计划被协调，使得每个唯一消息的至少一个重复将不会在给定时间段内与任何其他消息冲突。因此，在每个唯一数据消息的总共n个传输中，至多n-1个传输将被冲突和丢失。本发明的ATHMA协议和通信系统理想地适用于需要低吞吐率和信道容量的应用。 ATHMA协议可以应用于各种传输介质，如无线电，红外光学和有线介质，很少或没有修改。

2. 发明申请

US20060255761A1 Method for controlling two-phase stepping motor 失效
标题翻译：控制两相步进电机的方法
公开(公告)号：US20060255761A1
公开(公告)日：2006-11-16
申请号：US11430056
申请日：2006-05-09
申请人： Ferenc Fekete , Ming Au , Celement Chiu Sing Tse , Kenny Chi Ken Lee , Chi Keung Tang , Man Keung Mak , Ming Lam Ng , Kwok Kit Mak , Nai Lap Lee
发明人： Ferenc Fekete , Ming Au , Celement Chiu Sing Tse , Kenny Chi Ken Lee , Chi Keung Tang , Man Keung Mak , Ming Lam Ng , Kwok Kit Mak , Nai Lap Lee
IPC分类号： H02P8/00
CPC分类号： H02P8/34 , H02P8/02 , H02P8/20
摘要： A method of controlling a two-phase stepping motor to operate in one of a plurality of operating modes in which output of the motor behaves differently upon encountering obstacle, comprises the steps of: generating an electrical driving current comprising a repeating series of a positive active driving region, a first inactive driving region, a negative active driving region and a second inactive driving region; determining one of the duration of the active driving regions and the duration of the inactive driving regions relative to the other of the durations to thereby cause the motor to operate in a corresponding mode of the operating modes; and applying the driving current to the motor.
摘要翻译：一种控制两相步进电动机以在遇到障碍物时电动机的输出不同的多种运行模式中的一种运行的方法，包括以下步骤：产生电驱动电流，该电驱动电流包括正的积极的重复序列驱动区域，第一无效驱动区域，负有源驱动区域和第二无效驱动区域; 确定所述有效驱动区域的持续时间和所述非活动驱动区域相对于所述持续时间中的另一个的持续时间之一，从而使得所述电动机在所述操作模式的相应模式下操作; 并将驱动电流施加到电动机。

3. 发明授权

US07362072B2 Method for controlling two-phase stepping motor 失效
标题翻译：控制两相步进电机的方法
公开(公告)号：US07362072B2
公开(公告)日：2008-04-22
申请号：US11430056
申请日：2006-05-09
申请人： Ferenc Fekete , Ming Ki Au , Celement Chiu Sing Tse , Kenny Chi Ken Lee , Chi Keung Tang , Man Keung Mak , Ming Lam Ng , Kwok Kit Mak , Nai Lap Lee
发明人： Ferenc Fekete , Ming Ki Au , Celement Chiu Sing Tse , Kenny Chi Ken Lee , Chi Keung Tang , Man Keung Mak , Ming Lam Ng , Kwok Kit Mak , Nai Lap Lee
IPC分类号： G05B19/40
CPC分类号： H02P8/34 , H02P8/02 , H02P8/20
摘要： A method of controlling a two-phase stepping motor to operate in one of a plurality of operating modes in which output of the motor behaves differently upon encountering obstacle, comprises the steps of: generating an electrical driving current comprising a repeating series of a positive active driving region, a first inactive driving region, a negative active driving region and a second inactive driving region; determining one of the duration of the active driving regions and the duration of the inactive driving regions relative to the other of the durations to thereby cause the motor to operate in a corresponding mode of the operating modes; and applying the driving current to the motor.
摘要翻译：一种控制两相步进电动机以在遇到障碍物时电动机的输出不同的多种运行模式中的一种运行的方法，包括以下步骤：产生电驱动电流，该电驱动电流包括正的积极的重复序列驱动区域，第一无效驱动区域，负有源驱动区域和第二无效驱动区域; 确定所述有效驱动区域的持续时间和所述非活动驱动区域相对于所述持续时间中的另一个的持续时间之一，从而使得所述电动机在所述操作模式的相应模式下操作; 并将驱动电流施加到电动机。

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