Toshiba Corp (Total 142 Patents Found)

A power supply system (100) for supplying a load current to a load includes a serially connected circuit of a controlled rectifier (4), a switch (8) and a capacitor (6). The system (100) further includes a diode (9) connected in parallel with the capacitor (6) or with a serially connected circuit of the switch (8) and ...
This invention provides a level conversion circuit compris­ ing: an input terminal means for applying a voltage signal of predetermined amplitude level; an inverter circuit means (1) ap­ plied by a first power supply (Vcc 1) and a second power supply (G) and connected to the input terminal; and an output terminal ...
An electromagnetic shielding member for use in an electronic apparatus enclosed in a housing, includes a groove mating with an internal protrusion of the housing. When the shield case is clamped between a PC board and the housing, the shield case is urged toward the PC board, and thereby contacts a ground pattern of th...
A control device for a power conversion system with a plurality of power converters, each of which is provided with a DC power source, a DC reactor and a unit converter composed of self-turn-off switching devices with DC terminals connected to the DC power source through the DC reactor, in which AC terminals of the plu...
A radio apparatus having a battery saving func­tion comprising an indicator (307) for indicating that power is being supplied. An indicator is actuated in synchronization with the battery saving operation. In particular, a receiving circuit (306) is intermittently triggered by the power supply (304) and the indicator ...
A tuner circuit for converting the frequency of an input signal with a local oscillator (80) to a predetermined channel frequency. The tuner circuit includes an attenuation circuit (10, 30) responsive to the input signal for controlling the attenuated level of the input signal for reducing cross modulation and intermod...
A rotating anode X-ray tube is described which has a vacu­ um housing (32), an anode support shaft (34) inside the hous­ ing, with means (36, 38, 40) for rotating the support shaft (34); and an anode disk (44) mounted on the anode support shaft (34). A ring-shaped target (42) is mounted on the disk (44) towards th...
A radio apparatus having a battery saving func­ tion comprising an indicator (307) for indicating that power is being supplied. An indicator is actuated in synchronization with the battery saving operation. In particular, a receiving circuit (306) is intermittently triggered by the power supply (304) and the indic...
A dry etching apparatus is disclosed which uses reactive gases and which is capable of achieving anisotropic etching without causing radiation damage to a workpiece (10) to be selectively etched. The workpiece is placed in a vacuum container (11) into which two feedstock gases are introduced. One of the gases contribut...
An optical disc drive (11) of the present invention is configured to have a predetermined range of A/M 2 , which is determined by an area A of a light-receiving surface of a photodetector (26) to receive a reflected laser beam reflected on first and second recording layers of an optical disc, and a lateral magnificatio...
A translation communication system having memory means for storing past communication information and past translated information including an original word/translated word pair obtained from the communication information, and supply means for supplying the translated information useful for determining the translated w...
Method for a phosphor screen of a cathode ray tube includes the steps of forming a photo-tacky layer on a panel of a cathode ray tube, exposing the photo-tacky layer to form an adhesive pattern on the layer, and adhering phosphor powder on the adhesive pattern, in which these exposing and adhering steps are repeated. B...
An error correction circuit for detecting and correcting a plurality of errors in codewords made up of k data and n - k inspection symbols In the playback data from a recorded medium each symbol made up of m binary bits of information using a Reed-Solomon code for error detection and correction so that the error locati...
A translation communication system having memory means for storing past communication information and past translated information including an original word/translated word pair obtained from the communication information, and supply means for supplying the translated information useful for determining the transla...
Digital signal reproducing circuit for correcting phase errors of digital signals, and for synchronizing a bit synchronizing clock to the digital signal. The circuit comprises at least a PLL circuit (17, 18) connected to a wave-shaping circuit (16), a pattern detector (21, 22) connected to the PLL circuit (17, 18) for ...
An objective lens driving apparatus is provided which can restrain hysteresis phenomena in the relationship between semi-static displacements and forces in a focusing direction of the objective lens (17). The apparatus can also maintain the balance of force even when the objective lens is shifted in a focusing or track...
This invention provides a method of manufacturing a semiconductor device comprising, forming an oxidation-resistant film (23) on a semiconductor substrate (21), forming a mask (24) for etching by providing resist on the oxidation-resistant film (23), selectively removing the oxidation-resistant film (23) by isotr...