公开(公告)号：US06330234B1

公开(公告)日：2001-12-11

申请号：US09559675

申请日：2000-04-27

申请人： Peter A. Tomasi ,  Tong Zhao ,  Lindo St. Angel ,  Michael J. Schellinger ,  Dien N. Nguyen ,  Wayne H. Bradley

发明人： Peter A. Tomasi ,  Tong Zhao ,  Lindo St. Angel ,  Michael J. Schellinger ,  Dien N. Nguyen ,  Wayne H. Bradley

IPC分类号： H04J306

CPC分类号： H04J13/10 ,  H04B1/1615 ,  H04J13/0022 ,  H04W52/0225 ,  Y02D70/40

摘要： A method and apparatus reduces current consumption of a mobile communication unit, such as a cellular or mobile telephone that communicates with a base station by disabling a temperature controlled crystal oscillator and a code generator while the mobile communication unit is in a sleep mode of operation, thereby reducing the sleep mode current consumed by the mobile communication unit. Prior to entering sleep mode, the mobile communications unit stores the state of the code generator and disables the temperature controlled crystal oscillator. Upon waking from sleep mode, the mobile communication unit calculates what the state of its code generator would have been if its temperature controlled crystal oscillator had not been disabled, and uses this calculated state to achieve synchronization with a code generator in the base station.

摘要翻译： 一种方法和装置通过在移动通信单元处于睡眠操作模式期间禁用温度控制的晶体振荡器和代码生成器来减少与基站通信的移动通信单元（例如蜂窝或移动电话）的电流消耗， 从而减少由移动通信单元消耗的睡眠模式电流。 在进入睡眠模式之前，移动通信单元存储代码发生器的状态并禁止温度控制的晶体振荡器。 当从睡眠模式唤醒时，如果移动通信单元的温度控制晶体振荡器未被禁止，则计算其代码发生器的状态是什么，并且使用该计算状态来实现与基站中的代码生成器的同步。

公开(公告)号：US5835999A

公开(公告)日：1998-11-10

申请号：US660624

申请日：1996-06-06

申请人： John Grosspietsch ,  Lindo St. Angel

发明人： John Grosspietsch ,  Lindo St. Angel

IPC分类号： G05F3/24 ,  H03K5/08

CPC分类号： G05F3/242

摘要： A low power regenerative feedback device and method automatically increases bias current during positive large-signal slewing, enabling output to change faster. When the device is not in a positive slew, bias currents are unchanged, providing a low standby current. Since regenerative feedback is internal and automatic to the device, current is increased only for the device driving an active column of an LCD panel. Thus, the present invention is power efficient. In addition, the AC response of the device is preserved because the device utilizes a regenerative feedback circuit that does not add appreciable excess phase shift. The device achieves an output that switches readily from positive supply to negative supply.

摘要翻译： 低功率再生反馈装置和方法在正大信号回转期间自动增加偏置电流，使输出变化更快。 当器件不是正转时，偏置电流不变，提供低待机电流。 由于再生反馈对于器件是内部自动的，因此只能为驱动LCD面板的有效列的器件提供电流。 因此，本发明是功率效率的。 另外，器件的AC响应被保留，因为器件利用不增加可观的过量相移的再生反馈电路。 该器件实现了从正电源切换到负电源的输出。