Abstract:
The planar heater includes an insulating substrate, an electric conductive film disposed on the substrate, a plurality of electrodes both attached to one side of the electric conductive film, and an insulating film covering the electric conductive film. The electric conductive film is preferably formed of material having a resistance temperature coefficient of 420 ppm/° C. or higher at normal temperature.
Abstract:
A serial communication system comprises: a master; a plurality of slaves; and a serial communication bus connecting the master and the plurality of slaves. The master is configured so as to perform peer-to-peer control, via the serial communication bus, of the plurality of slaves. Each of the plurality of slaves has: an I/O portion for controlling communication with the master; a control portion for controlling a driving portion of the slave; and a register portion. The register portion comprises a control program for the driving portion. The control program comprises a plurality of functions, and the register portion stores control information to which are allocated all or a portion of the plurality of functions corresponding to all or to a portion of the plurality of program steps. The master issues a command specifying the program step to each of the slaves, each of the slaves receiving the command via the serial communication bus, and each of the control programs of the plurality of slaves determines a program step specified by the command based on the received command, and the slaves simultaneously execute the function relevant to the relevant program step based on the control information.
Abstract:
A sawtooth wave generating apparatus includes a base frequency generating section and a frequency generating section for generating the frequency of a reference signal, a sawtooth wave forming section which forms a sawtooth wave based on the reference signal, a voltage comparator which compares the voltage value of the sawtooth wave formed by the sawtooth wave forming section with a predetermined voltage value, a phase comparator which compares the phase of the output signal from the voltage comparator with the phase of the reference signal, and a low-pass filter (LPF) which cuts out a high frequency component of the output signal from the phase comparator, and feeds back the resulting output signal to the sawtooth wave forming section.
Abstract:
This image data processing device DP1 is equipped with a frame video data acquiring unit 40 and driving video data generator 50. The frame video data acquiring unit 40 acquires first frame video data FR(N) that shows first original images, as well as second frame video data FR(N+1) that show second original images that are displayed following the first original images. The driving video data generator 50 generates first through fourth driving video data DFI1(N), DFI2(N), DFI1(N+1), DFI2(N+1) that respectively show first through fourth driving images to be sequentially displayed on the image display device. First and second driving video data DFI1(N), DFI2(N) are generated based on first frame video data FR(N). Third and fourth driving video data DFI1(N+1), DFI2(N+1) are generated based on second frame video data FR(N+1). The color of the pixel in a part of the second driving image constitutes the complementary color of the color of the corresponding pixel in the first driving image. The color of the pixel in a part of the third driving image constitutes the complementary color of the color of the corresponding pixel to the fourth driving image.
Abstract:
Provided is a motor control circuit in which the circuit structure is not complicated, which has a favorable response to the phase difference signal, and in which the signal variation caused by heat is small. This rotation control circuit of a motor includes: a PWM control circuit of the motor; a rotational speed sensor of the motor; a reference signal generation circuit 10; a phase comparing circuit; and a divider for dividing the detected rotational speed signal of the motor; wherein the phase difference between the signal from the divider and the signal based on the reference signal is sought with the phase comparing unit, and this phase difference signal is supplied to the PWM control circuit.
Abstract:
Provided is a motor having a combination of a plurality of coil pairs and a permanent magnet, wherein these coil pairs are supplied with an excitation signal from a drive circuit so as to be excited at alternate opposite poles, and the permanent magnet is constituted such that the plurality of polar elements is disposed to become alternating opposite poles; the drive circuit is constituted to supply an excitation signal having a prescribed frequency to the coil pairs, and relatively move the coil pairs and permanent magnet with the magnetic attraction repulsion between the coils and permanent magnet; and the drive circuit is constituted to supply to the coil pairs a waveform signal corresponding to the pattern of the back electromotive voltage to be generated in accordance with the relative movement between the coil pairs and permanent magnet.
Abstract:
Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a control circuit having a drive control circuit of the motor and a regenerative control circuit, and a detection unit for detecting the driving status of the drivee, the drive control circuit and regenerative control circuit have a control unit for controlling, linearly or in multiple stages, the duty ratio of the drive or regenerative signal to be supplied to the motor based on the phase difference of the phase of the detection signal from the detection unit and the command value signal to the motor.
Abstract:
A discharge tube is driven by a multiple-phase drive circuit, and includes a discharge container having an internal discharge space and multiple electrodes that are secured to the discharge container and correspond to each phase of the multiple-phase drive circuit. The tips of the multiple electrodes protrude into the discharge space, and are oriented toward a predetermined single point of union. All of the electrodes located on one side of a virtual plane that includes the predetermined point of union. Furthermore, a discharge lamp having the discharge tube includes three electrodes, and electric discharge can take place between each pair of electrodes. When the discharge lamp is driven at maximum output, voltage is impressed to the three electrode terminals such that at least one of the voltages VeAB, VeBC, VeCA between the three electrode terminals will be in a discharge period.