| Patent Number |
Title Of Patent |
Date Issued |
| 7489528 |
Power supply control method, current-to-voltage conversion circuit and electronic apparatus |
February 10, 2009 |
| A power supply control method is adapted to a current-to-voltage conversion circuit which has a transformer for converting and outputting an input power. The power supply control method stops a power supply to the transformer when an output side of the current-to-voltage conversion c |
| 7276881 |
Protection method, control circuit, and battery unit |
October 2, 2007 |
| A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal "1" is supplied to a set terminal, a flip-flop outputs "1". The gate of a discharge control FET |
| 6940737 |
Power supply control method |
September 6, 2005 |
| A power supply control circuit connectable with an input power monitor that monitors an input power value to the power supply, an output power monitor that monitors an output power value from the power supply, and an output power controller that varies the output power value from the pow |
| 6897635 |
Method for predicting remaining charge of portable electronics battery |
May 24, 2005 |
| A remaining charge predicting method which improves the precision of predicting the remaining charge of a rechargeable battery. A battery pack has a measuring circuit which monitors a charge current, discharge current, the voltage of the rechargeable battery and the temperature of th |
| 6885168 |
Battery unit having means for preventing over-discharge |
April 26, 2005 |
| A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal "1" is supplied to a set terminal, a flip-flop outputs "1". The gate of a discharge control FET |
| 6657415 |
Portable apparatus |
December 2, 2003 |
| When starting charging of an internal battery as a result of connection of an external power source by an AC adapter, a charging control unit sets a first charging voltage at which the charging capacity of the internal battery is maximized. When starting the charging from recognition of |
| 6639812 |
Power supply control circuit that adjusts output power based on variable input power |
October 28, 2003 |
| A power supply control circuit connectable with an input power monitor that monitors an input power value to the power supply, an output power monitor that monitors an output power value from the power supply, and an output power controller that varies the output power value from the pow |
| 6492791 |
Protection method, control circuit, and battery unit |
December 10, 2002 |
| A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal "1" is supplied to a set terminal, a flip-flop outputs "1". The gate of a discharge control FET |
| 6366475 |
Power control method and circuit, and power supply unit |
April 2, 2002 |
| A power control circuit for controlling an output of a power supply is provided with a setting section which variably sets a maximum rated output based on input temperature information. |
| 4743978 |
Recording/reproduction system with a fine picture quality for a helical scan-type video tape rec |
May 10, 1988 |
| In the video tape recorder capable of providing a recording and reproduction with high picture quality, first and second heads of a first azimuth angle and for recording and reproducing the luminance signal is disposed on the rotary head cylinder. Third and fourth heads of a second a |
| 4422112 |
Magnetic recording and reproducing apparatus |
December 20, 1983 |
| Disclosed is a video tape recorder, which uses an endless magnetic tape where recording tracks are formed in the running direction of the tape and in which magnetic heads are moved in the direction of the width of the tape with every excursion of the tape. The video tape recorder include |
| 4243921 |
Digital servo system for rotating member |
January 6, 1981 |
| A digital servo system for a rotating member which detects a difference between phases of a reference signal and a signal representing the rotation phase of the rotating member thereby to control its rotation in accordance with the phase difference. Comparison is made by a digital ro |
