公开(公告)号：WO1996034444A1

公开(公告)日：1996-10-31

申请号：PCT/US1996005694

申请日：1996-04-24

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  FERNANDEZ, Jose, M. ,  MEADOWS, Vernon ,  MACK, Erika, Dawn ,  THANDIWE, Iilonga, P.

IPC: H02J07/00

CPC classification number: H02J7/0031

Abstract: A battery pack (62) comprises cells (74), and is charged by a charger (64) providing a current level. The charger (64) is a typical nickel-cadmium battery charger providing a first charge current level in excess of an optimum charge current level. The battery pack (62) further comprises a thermal sensing element (76) and an overcurrent charge protection circuit having an overcurrent switch (78), current sense circuit (80), comparator circuit (82), and temperature signal switch (84). If the current level through the cells (74) exceeds the optimum charge current level, the current sense circuit (80) provides a signal to comparator circuit (82) which actuates the temperature signal switch (84), simulating a hot battery pack. The charger (64) then switches to a second charge current level which does not exceed the optimum charge current level. If the charger (64) does not change current levels, a switch delay (86), after a brief period, accumulates enough voltage to actuate a driver switch (88) which opens the overcurrent switch (78), disconnecting the cells (74) from the charger (64).

Abstract translation: 电池组（62）包括电池（74），并由提供电流电平的充电器（64）充电。 充电器（64）是典型的镍镉电池充电器，其提供超过最佳充电电流电平的第一充电电流电平。 电池组（62）还包括热敏元件（76）和具有过电流开关（78），电流检测电路（80），比较器电路（82）和温度信号开关（84）的过电流充电保护电路。 如果通过单元（74）的电流电平超过最佳充电电流电平，则电流感测电路（80）向比较器电路（82）提供信号，该电路致动温度信号开关（84），模拟热电池组。 然后，充电器（64）切换到不超过最佳充电电流电平的第二充电电流电平。 如果充电器（64）不改变电流水平，则在短时间之后，开关延迟（86）累积足够的电压以致动打开过电流开关（78）的驱动器开关（88），断开电池（74）， 从充电器（64）。

公开(公告)号：WO1997038503A1

公开(公告)日：1997-10-16

申请号：PCT/US1997005486

申请日：1997-04-02

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  O'DEA, Robert, J. ,  MURI, David, L. ,  THANDIWE, Iilonga, P.

IPC: H04K01/02

CPC classification number: H04L27/2053 ,  H04L25/03834

Abstract: A digitally modulated signal is conditioned, such as to facilitate amplification. The digitally modulated signal is derived from an information signal (110, 115) which is mapped (120) onto a symbol constellation to generate a sequence of channel symbols (125). The sequence of channel symbols (125) is processed (410) to provide a conditioned signal (415) having a signal envelope that avoids signal envelope magnitudes below a threshold value (500). From a signal envelope representing the sequence of channel symbols, symbol interval minimum values are determined as the signal envelope transitions through successive channel symbols of the sequence (510). The conditioned signal (415) is represented by localized adjustment of the signal envelope, such as the insertion of an adjustment pulse, to increase a particular symbol interval minimum value, when that value is below the threshold value (520, 530, 540, 545, 555).

Abstract translation: 对数字调制信号进行调节，以便于放大。 数字调制信号从映射（120）到符号星座上的信息信号（110,115）导出，以产生信道符号序列（125）。 信道符号（125）的序列被处理（410）以提供具有避免信号包络幅度低于阈值（500）的信号包络的调节信号（415）。 从表示信道符号序列的信号包络中，当信号包络通过序列（510）的连续信道符号转变时，确定符号间隔最小值。 调节信号（415）通过信号包络的局部调整来表示，例如插入调整脉冲，当该值低于阈值（520,530,540,545）时，增加特定的符号间隔最小值 ，555）。