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1. 发明授权

US5442457A Multi-line pooling facsimile apparatus 失效
标题翻译：多线汇流传真机
公开(公告)号：US5442457A
公开(公告)日：1995-08-15
申请号：US2607
申请日：1993-01-11
申请人： Hamid Najafi
发明人： Hamid Najafi
IPC分类号： H04N1/327 , H04N1/333 , H04N1/00
CPC分类号： H04N1/32797 , H04N1/327 , H04N1/33323 , H04N1/33353 , H04N2201/3335
摘要： A multi-line facsimile communication system, where two or more telephone lines are used simultaneously to transmit messages in order to increase the aggregate channel capacity and thereby increase transmission speed and reduce the transmission time. The system further incorporates back channel technology to transmit certain status information from the receiving facsimile machine to the transmitting facsimile machine.
摘要翻译：一种多线传真通信系统，其中两条或更多条电话线同时用于发送消息，以增加总信道容量，从而增加传输速度并减少传输时间。该系统进一步包括反向信道技术，以将某些状态信息从接收传真机发送到发送传真机。

2. 发明授权

US4489222A Telephone line interface 失效
标题翻译：电话线接口
公开(公告)号：US4489222A
公开(公告)日：1984-12-18
申请号：US417638
申请日：1982-09-13
申请人： Bruce B. Lusignan , Hamid Najafi
发明人： Bruce B. Lusignan , Hamid Najafi
IPC分类号： H04M3/30 , H03F3/393 , H04B3/23 , H04M1/03 , H04M1/26 , H04M3/06 , H04M9/10 , H04M19/00 , H04M19/02 , H04Q3/42 , H04Q3/72 , H04Q11/04 , H03K7/08 , H04B3/20
CPC分类号： H04M19/023 , H04M19/008 , H04Q11/04
摘要： A telephone line interface which performs the BORSHT functions employs pulse width modulation and eliminates dc in the transformer to reduce the size of the coupling transformer thereby reducing space and costs. The ring function is provided to the subscriber without use of mechanical relays. An automatic, dynamically adjusted hybrid network is provided for removing echo signals thereby providing major improvement in two-to-four wire conversion performance. The circuitry lends itself to large scale integration thereby reducing space and cost and improving reliability.
摘要翻译：执行BORSHT功能的电话线接口采用脉冲宽度调制，并消除变压器中的直流，以减小耦合变压器的尺寸，从而降低空间和成本。在不使用机械继电器的情况下，向用户提供振铃功能。提供了自动，动态调整的混合网络，用于去除回波信号，从而提供二到四线转换性能的重大改进。该电路适合大规模集成，从而降低空间和成本，提高可靠性。

3. 发明授权

US06625209B1 Short synchronization time data modem 失效
标题翻译：短同步时间数据调制解调器
公开(公告)号：US06625209B1
公开(公告)日：2003-09-23
申请号：US09280400
申请日：1999-03-29
申请人： Hamid Najafi
发明人： Hamid Najafi
IPC分类号： H04B138
CPC分类号： G04G5/002 , H04W4/02
摘要： A short synchronization time modem comprising a GPS receiver for receiving a broadcasted signal comprising a high precision clock. When a first short synchronization data modem communicates with a second, a PLL in each data modem synchronizes its own local clock to the same high precision clock derived from the same received broadcasted signal. The modems connect for the first time using one of many clock recovery schemes known to the modem designers. Once they disconnect, the modems keep their clocks synchronized using a local GPS receiver and the received broadcasted signal. This prevents the local clock of the modems from drifting, which significantly reduces the time period the modems need to synchronize the next time they connect.
摘要翻译：一种短同步时间调制解调器，包括用于接收包括高精度时钟的广播信号的GPS接收机。当第一个短同步数据调制解调器与第二个同步数据调制解调器通信时，每个数据调制解调器中的PLL将其自己的本地时钟同步到从相同的接收广播信号导出的相同的高精度时钟。调制解调器首次使用调制解调器设计人员已知的许多时钟恢复方案之一进行连接。一旦它们断开连接，调制解调器将使用本地GPS接收器和接收到的广播信号保持时钟同步。这样可以防止调制解调器的本地时钟漂移，这显着地减少了调制解调器在下一次连接时需要同步的时间。

4. 发明授权

US5929752A Clandestine missing vehicle location reporting using cellular channels 失效
标题翻译：使用蜂窝频道秘密丢失车辆位置报告
公开(公告)号：US5929752A
公开(公告)日：1999-07-27
申请号：US814982
申请日：1997-03-11
申请人： James M. Janky , Hamid Najafi , John F. Schipper
发明人： James M. Janky , Hamid Najafi , John F. Schipper
IPC分类号： B60R25/10 , G01S5/00 , G08G1/123 , H04W4/18 , H04W48/08 , H04W64/00 , H04W84/04
CPC分类号： G08G1/205 , B60R25/102 , B60R25/33 , H04W64/00 , B60R2325/205 , B60R2325/304 , B60W2550/402 , G01S2205/002 , G01S2205/008 , G01S5/0027 , H04W4/18 , H04W48/08 , H04W84/042
摘要： Apparatus and method for a location determination and reporting (LDR) system for clandestinely determining and reporting a missing vehicle present location. The vehicle is equipped with a handheld cellular phone unit and controller that are accepted and held by a cellular phone cradle that can include electrical power and/or a location determination (LD) unit to determines the LD unit present location. The cellular phone unit can operate on one cellular channel or on two distinct cellular channels. When the vehicle is reported missing, the central station interrogates the vehicle LDR system to determine the vehicle present location. A location interrogation signal is transmitted, commanding the LD unit to transmit its present location. The cellular phone does not signal receipt of an incoming call for an initial time period of selected length .DELTA.td, awaiting possible receipt of a location interrogation signal on the first cellular channel. If the incoming call includes a location interrogation signal, the cellular phone does not "ring" but transmits information on the vehicle's present location to the central station. If the incoming call does not include a location interrogation signal, the cellular phone "rings" audibly or visually, after the initial time delay, and behaves as a normal cellular phone for that call on the second cellular channel. The cellular phone functions normally if a vehicle occupant attempts to use the phone. An unauthorized user of the vehicle receives no indication that the innocuous cellular phone is used to track the vehicle present location.
摘要翻译：用于秘密确定和报告缺失车辆现场位置的位置确定和报告（LDR）系统的装置和方法。该车辆配备有手持式蜂窝电话单元和控制器，其被蜂窝电话支架接收和保持，其可以包括电力和/或位置确定（LD）单元，以确定LD单元当前位置。蜂窝电话单元可以在一个蜂窝信道上或两个不同的蜂窝信道上操作。当报告车辆失踪时，中心站询问车辆LDR系统以确定车辆当前位置。发送位置询问信号，指示LD单元发送其当前位置。蜂窝电话没有在选定长度DELTA td的初始时间周期内发出来电的接收，等待可能在第一蜂窝信道上接收到位置询问信号。如果来电包括位置询问信号，则蜂窝电话不会“振铃”，而是将车辆当前位置的信息发送到中心站。如果来电不包括位置询问信号，则在初始时间延迟之后，蜂窝电话以可听或视觉的方式“振铃”，并且在第二蜂窝信道上表现为用于该呼叫的普通蜂窝电话。如果车辆乘客试图使用电话，蜂窝电话将正常工作。车辆的未经授权的用户没有接收到无害的蜂窝电话用于跟踪车辆当前位置的指示。

5. 发明授权

US07020442B2 System and method for WLAN signal strength determination 有权
标题翻译：用于WLAN信号强度测定的系统和方法
公开(公告)号：US07020442B2
公开(公告)日：2006-03-28
申请号：US10263581
申请日：2002-10-02
申请人： Hamid Najafi , Xiping Wang
发明人： Hamid Najafi , Xiping Wang
IPC分类号： H04B17/00
CPC分类号： H04B17/318 , H04B17/23 , H04M2250/06 , H04W84/12
摘要： A method for WLAN signal strength determination comprises receiving a WLAN RF signal; converting the WLAN RF signal to a voltage proportional to the signal; comparing the voltage to a first reference voltage; and outputting data corresponding to WLAN RF signal strength if the voltage is greater than the first reference voltage.
摘要翻译：一种用于WLAN信号强度确定的方法包括：接收WLAN RF信号; 将WLAN RF信号转换成与信号成比例的电压; 将电压与第一参考电压进行比较; 以及如果所述电压大于所述第一参考电压，则输出对应于WLAN RF信号强度的数据。

6. 发明授权

US6038444A Method and apparatus for advising cellphone users of possible actions to avoid dropped calls 失效
标题翻译：为手机用户提供可能的动作以避免掉话的方法和装置
公开(公告)号：US6038444A
公开(公告)日：2000-03-14
申请号：US929597
申请日：1997-09-15
申请人： John F. Schipper , Hamid Najafi , James M. Janky
发明人： John F. Schipper , Hamid Najafi , James M. Janky
IPC分类号： G01S5/00 , G01S5/14 , G01S19/25 , H04B7/185 , H04W36/32 , H04W64/00 , H04Q7/34
CPC分类号： H04B7/18541 , H04B7/18552 , H04W36/32 , G01S2205/007 , G01S5/0027 , H04W64/00
摘要： Method and apparatus for tracking the location of, and for providing cellular telephone handoff for, a mobile cellphone user as the user moves from one cell to another. A boundary curve B12 between a first cell and an adjacent second cell is defined in an electronic map. First and second quasi-boundary curves QB1 and QB2, lying within the first and second cell, respectively, are defined, where each point on the curve QBi (i=1,2) lies at a selected distance from the boundary curve B12. A common region CR12 of points lying between the quasi-boundary curves QB1 and QB2 and including the boundary curve B12 is defined. The present cellphone location of the cellphone user is determined using a location determination system, such as GPS or GLONASS or a ground-based system. Cellular telephone service for the cellphone user is provided by a first cell site or by a second cell site, when the cellphone user is located within the first cell or the second cell, not including the overlap region CR12. When the cellphone user enters the region CR12 from within the first cell and proceeds toward the boundary curve B12, the user cellphone notifies at least one of the first and second cell sites that the cellphone user is about to leave the first cell and about to enter the second cell. The system advises the user if the cellphone is about to pass to another cell in which a cellular connection is likely to be dropped because no handoff cellular frequencies are available, or because the cellphone is about to enter a hole region where signal strength is less than an acceptable threshold value.
摘要翻译：随着用户从一个小区移动到另一个小区，用于跟踪移动蜂窝电话用户的位置并提供蜂窝电话切换的方法和装置。在电子地图中定义第一单元和相邻的第二单元之间的边界曲线B12。定义分别位于第一和第二单元内的第一和第二准边界曲线QB1和QB2，其中曲线QBi（i = 1,2）上的每个点位于距离边界曲线B12的选定距离处。定义了位于准边界曲线QB1和QB2之间并包括边界曲线B12的点的公共区域CR12。使用位置确定系统（例如GPS或GLONASS或基于地面的系统）来确定手机用户的当前手机位置。当手机用户位于第一小区或第二小区内时，蜂窝电话用户的蜂窝电话服务由第一小区站点或第二小区站点提供，不包括重叠区域CR12。当手机用户从第一小区内进入区域CR12并且朝向边界曲线B12进行时，用户手机通知第一和第二小区站点中的至少一个手机用户即将离开第一小区并且即将进入第二个细胞。如果手机将要传送到蜂窝连接可能丢失的另一个小区，系统建议用户，因为没有切换蜂窝频率可用，或者因为手机即将进入信号强度小于的蜂窝区域一个可接受的阈值。

7. 发明授权

US4628519A Digital phase-locked loop circuit 失效
标题翻译：数字锁相环电路
公开(公告)号：US4628519A
公开(公告)日：1986-12-09
申请号：US597767
申请日：1984-04-06
申请人： Hamid Najafi
发明人： Hamid Najafi
IPC分类号： H04L7/033 , H04L7/02 , H03D3/24
CPC分类号： H04L7/033 , H04L7/0331
摘要： Disclosed is a digital phase-locked loop circuit for telecommunication circuits receiving bipolar codes. The digital phase-locked loop circuit includes a transition timer means for counting a transition duration between a high mark and a low mark in said bipolar code. A clock recovery signal is generated by dividing a transition duration by a value, such as two, to indicate an apparent zero crossing time, and comparing the apparent zero crossing time with the reference clock in the circuit receiving the bipolar code. The reference clock in the receiving circuit is adjusted in response to the clock recovery signal in order to maintain the reference clock substantially in phase with the incoming bipolar code.
摘要翻译：公开了一种用于接收双极性代码的电信电路的数字锁相环电路。数字锁相环电路包括用于对所述双极性代码中的高标记和低标记之间的转换持续时间进行计数的转换定时器装置。通过将转换持续时间除以诸如两个的值来产生时钟恢复信号，以指示表观零交叉时间，并将表观过零时间与接收双极性代码的电路中的参考时钟进行比较。响应于时钟恢复信号来调整接收电路中的参考时钟，以便使参考时钟基本上与输入双极性代码相同。

8. 发明申请

US20180231271A1 SMART VENT APPARATUS AND SYSTEM 审中-公开
公开(公告)号：US20180231271A1
公开(公告)日：2018-08-16
申请号：US15896882
申请日：2018-02-14
申请人： Hamid NAJAFI , Bhusan Gupta , Hamid Farzaneh
发明人： Hamid NAJAFI , Bhusan Gupta , Hamid Farzaneh
IPC分类号： F24F13/14 , F24F11/58 , F24F11/63 , F24F11/76
CPC分类号： F24F13/1426 , F24F11/58 , F24F11/63 , F24F11/76 , F24F2013/1433 , F24F2110/10 , F24F2120/20
摘要： A smart vent system is provided comprising at least one smart vent having a wireless connection to a gateway which interfaces directly with the HVAC system to control the HVAC system's operation, thereby bypassing or rendering unnecessary any thermostats that would normally control the HVAC system. The smart vent has a user device link for communicating directly with a user device. The gateway may be configured to either communicate with a smart thermostat or control the HVAC system directly. The smart vent may be embodied in either one device or two intercommunicating devices.

9. 发明申请

US20100304704A1 Wireless Phone with Lanyard Antenna 审中-公开
标题翻译：带挂绳天线的无线电话
公开(公告)号：US20100304704A1
公开(公告)日：2010-12-02
申请号：US11720760
申请日：2005-11-30
申请人： Hamid Najafi
发明人： Hamid Najafi
IPC分类号： H04M11/04 , H04M1/00 , H04M3/42
CPC分类号： H04M1/0283 , H01Q1/242 , H01Q1/36 , H04M1/271 , H04M1/274516 , H04M1/663 , H04M1/665 , H04M1/677 , H04M1/6775
摘要： A wireless phone has an antenna disposed within a lanyard shape. The phone also has two sets of keys, each set separately accessible via a separate bezel. The phone increases SAR during emergency calls. The phone only allows authorized users to call the phone.
摘要翻译：无线电话具有设置在挂绳形状内的天线。手机还有两套按键，每组都可以通过单独的挡板进行设置。紧急电话期间，手机增加了SAR。手机只允许授权用户打电话。

10. 发明申请

US20080090564A1 WIRELESS PHONE MODULE AND METHOD 审中-公开
标题翻译：无线电话模块和方法
公开(公告)号：US20080090564A1
公开(公告)日：2008-04-17
申请号：US11549653
申请日：2006-10-15
申请人： Hamid Najafi , Michael S. Cummiskey
发明人： Hamid Najafi , Michael S. Cummiskey
IPC分类号： H04Q7/20
CPC分类号： H04W8/20 , H04M1/57 , H04M1/663 , H04M1/72575
摘要： A module includes a transceiver, display and I/O interface. The module can be coupled to a case such that the I/O interface can download data from a memory in the case, including a GUI, graphics, etc. Calls can then be blocked based on the relationship of the caller and the downloaded data.
摘要翻译：模块包括收发器，显示器和I / O接口。该模块可以耦合到壳体，使得I / O接口可以在包括GUI，图形等的情况下从存储器下载数据。然后可以基于呼叫者和下载的数据的关系来阻止呼叫。

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