Sony Corporation

Akira Konno

Takuya Niitsu

Shinpei Hirano

Eiji Kimura

Taiki Hori

An information processing device is provided which includes a detection portion that detects an approach or a touch of an operating body and that is provided on an external surface of a housing having a first housing and a second housing that is openably/closably attached to the first housing, a storage portion that stores detection information detected by the detection portion and a blinking pattern, and a blinking control portion that controls blinking of a light emitting portion based on the detection information detected by the detection portion and on the blinking pattern. With this configuration, results of detection by the detection portion can be notified to the user by the light emitting portion.

Information processing device, information notification method and computer program

A switching power supply apparatus () for controlling the operation of a switching FET () adapted for switching a rectified smoothed output of a primary side rectifying smoothing circuit () by a switching controlling circuit () having a hysteresis low-voltage mistaken operation prohibiting circuit. An output of a ternary winding (C) of a converter transformer is rectified and smoothed by a rectifying smoothing circuit () to drive the switching controlling circuit (). An output voltage of the ternary winding (C), varied in dependence upon the load state on the secondary side of a converter transformer () is set so as to be lower than a low voltage protective voltage in case the voltage is lower than a design load and so as to be higher than the low voltage protective voltage in case the voltage is higher than the design load, in order to carry out an intermittent operation during standby time. Thus, the switching operation during standby time may be carried out intermittently to minimize the power consumption to realize the energy saving during standby time, simply by adjusting the values of respective key devices, without appreciably changing the pre-existing circuitry.

Switching power supply apparatus

The present invention is directed to a switching power supply apparatus () adapted for controlling switching operation of a switching FET () which carries out switching of rectified and smoothed output of a primary side rectifying/smoothing circuit () by a switching control circuit () including a hysteresis low voltage malfunction preventing circuit, wherein lowering time until rated voltage at which constant voltage by self-discharge can be maintained is caused to be longer than time until operating voltage of the low voltage malfunction preventing circuit of the switching control circuit of the primary side at the time of no load, and lowering time until rated voltage at which constant voltage by self-discharge can be maintained is caused to be shorter than time until operating voltage of the voltage malfunction preventing circuit at the time of ordinary load to thereby suppress power consumption as minimum as possible to realize energy-saving at the time of standby.

Switching power supply

In a normal operation mode, a mode changeover controller continuously operates a PWM control circuit so as to operate a switching element at the basic oscillation frequency. In a standby mode, the mode changeover controller intermittently operates the PWM control circuit so as to turn on the switching element at a given repetition interval and for a given time period. This repetition interval is shorter than a time for decreasing an output voltage from a rectifying and smoothing circuit down to a guaranteed load operating voltage due to power consumption of the load and the rectifying and smoothing circuit in the standby mode and is longer than a time for entering a sonic frequency band. That time period is longer than a time for stabilizing an output from the rectifying and smoothing circuit and is longer than a time for entering a sonic frequency band.

Growing community of inventors

Miyagi, Japan

Akira Konno