Abstract:
A welding control unit has a common power section for detecting contact of a welding material and for welding. A material contact detector for detecting contact of the welding material and a workpiece, and a power controller are built in the welding control unit. This stabilizes a bead shape in starting welding. The number of components can also be reduced, resulting in more inexpensive equipment. In addition, only a space for installing the welding control unit is needed without any additional space.
Abstract:
An in-vehicle sound control system structured so that sound sources, a vehicle speed detection unit for detecting a vehicle running speed, and an acoustic reproduction apparatus are connected to in-vehicle communications network. The in-vehicle sound control system controls, in accordance with a vehicle speed signal transmitted from the vehicle speed detection unit, a reproduction acoustic signal. The acoustic reproduction apparatus switches, in accordance with a plurality of inputted sound sources and media information of a sound source, a control amount to sound control section determined based on a vehicle speed signal. In this manner, such an in-vehicle sound control system is provided that can provide an optimal automatic sound control for human ears even when the medium is exchanged or when a channel for a sound source in the medium is switched to another channel.
Abstract:
A transmitting apparatus, receiving apparatus and communication system are disclosed, and great improvement in an S/N ratio, preventing an actual throughput from decreasing, and preventing the number of circuits for synchronizing spread spectrum signals from increasing can be expected at the receiving apparatus side. The transmitting apparatus includes a pulse generating circuit, pulse repetition cycle determining circuit, peak power determining circuit, and modulator. The pulse generating circuit generates pulse strings, pulse repetition cycle determining circuit determines, based on a clock signal, a pulse repetition cycle of the pulse string generated by the pulse generating circuit. The peak power determining circuit determines a pulse peak power of the pulse string. The modulator modulates the pulse string with transmission data, and then generates a transmission signal.
Abstract:
A driving method of plasma display panels is disclosed. This method can suppress a dark belt occurring in displaying a video of a lower part of grayscale. One field includes plural sub-fields, and each one of the sub-fields has an addressing period during which a scan pulse is applied to the scan electrodes and a data pulse is applied to the data electrodes, and a sustaining period during which a sustain pulse is applied to the scan electrodes and the sustain electrodes. A time interval between a scan pulse applied lastly during the addressing period and a sustain pulse applied firstly during the sustaining period is defined as a last pulse-interval. The last pulse-interval of at least one sub-field of a lower part of grayscale, which lower part is darker than a predetermined level of the grayscale, is set longer than the last pulse-intervals of the other sub-fields.
Abstract:
By compensating for a detection result of the detector in feedback control of output power of the power amplifier, the polar modulation transmission apparatus is able to realize accurate transmission power control. Polar modulation transmission apparatus 100 has detector 106 that detects output power of power amplifier 103, PAPR calculating section 131 that calculates the PAPR of the spread modulated signal, compensation value generating section 134 that outputs a compensation value corresponding to the calculated PAPR and an arithmetic operator that performs an arithmetic operation using the compensation value and a detection result obtained by detector 106. By this means, it is possible to compensate for the sensitivity of detector 106 (measurement sensitivity) that changes depending on the B parameter and mode and make the sensitivity of detector 106 (measurement sensitivity) virtually constant.
Abstract:
In an image rejection mixer of a receiving device of the invention, when a signal of a first radio frequency band is input to input terminal, first mixer and second mixer convert the input signal of the first radio frequency band into a signal of a first intermediate frequency band by the use of a first local signal from local signal oscillation unit and a filter circuit attenuates an image disturbing signal existing in the first intermediate frequency band, and when a signal of a second radio frequency band is input to the input terminal, first mixer and second mixer convert the input signal of the second radio frequency band into a signal of a second intermediate frequency band by the use of a second local signal from the local signal oscillation unit and the filter circuit attenuates an image disturbing signal existing in the second intermediate frequency band. The first intermediate frequency band and the second intermediate frequency band are partly overlapped with each other.
Abstract:
A device for measuring cellular potential includes a substrate, a first electrode tank, a first electrode, a second electrode tank and a second electrode. The first electrode tank and the second electrode tank are disposed on the upper side and lower side of the substrate, respectively. The first electrode is disposed inside the first electrode tank and the second electrode is disposed inside the second electrode tank. The substrate includes a single crystal plate having a diamond structure with (100) plane orientation or (110) plane orientation. The substrate has a first surface provided with a depression and a second surface facing this first surface. From the depression to the second surface, a through-hole is formed. The depression has an inner wall extending from the opening of the through-hole to the outer periphery, curving and being connected to the first surface.
Abstract:
An exemplary modulator apparatus for a polar modulation transmitter includes a phase difference extractor, a phase modulator, and a coarse phase controller. The phase difference extractor is configured to extract +180° and −180° phase differences represented in a phase-difference modulation signal in a phase modulation path of the polar modulation transmitter, or extract other phase differences exceeding other predetermined phase difference thresholds, to produce a bandwidth-reduced phase-difference modulation signal. The phase modulator includes a controlled oscillator having a tuning port that is modulated by phase differences represented in the bandwidth-reduced phase-difference modulation signal, to produce a phase-modulated RF carrier signal. The coarse phase controller operates to effectuate phase reversals or introduce other coarse phase changes into the phase-modulated RF carrier signal, based on the phase differences extracted from the original phase-difference modulation signal.
Abstract:
The electronic component mounting line includes computing unit for calculating a print position of solder paste printed on board-side electrodes, electronic component placement device for placing an electronic component onto the board-side electrodes by referencing the print position of the solder paste, placement position control device for controlling the placement position of the electronic component by referencing the print position of the solder paste, bonding device for melting the solder paste to bond the electronic component and the board-side electrodes to each other, and mounting-position control device for controlling the mounting position of the electronic component by referencing the board-side electrode position. In this configuration, position control responsive to a displacement of the electronic component by the self alignment effect exerted by the molten solder paste is fulfilled.
Abstract:
A blood test device using a laser as a puncture means. More specifically, it is intended to provide a blood test device using a laser as a puncture means by which the skin can be fixed at a definite position by raising up the punctured skin under negative pressure and thus bringing it into close contact with a blood sensor and in which the laser is focused into the vicinity of the blood sensor face. Thus, it is possible to provide a blood test device of the laser puncture type whereby the skin can be surely punctured while giving little pain to a patient.