Seiko Epson Corporation

Makoto Inoguchi

Isuke Karaki

Yutaka Takada

Masahiro Kitano

Osamu Honda

Shunji Kamijima

Tomoaki Nakamura

Kazuhisa Mizusako

Izumi Iida

Michihiro Nagaishi

Toru Watanabe

Hiromitsu Mizukami

A transmission device that includes: a radio signal transmission processing section that transmits a radio carrier wave overlaid with transmitting information after being modulated by pulse position modulation; an optical signal transmission processing section that transmits an optical carrier wave overlaid with the transmitting information after being modulated by the pulse position modulation; and a baseband processing section that modulates the transmitting information in accordance with the pulse position modulation of shared use with the radio signal transmission processing section and the optical signal transmission processing section.

Communications device

When a correlation judging circuit judges that the correlation degree between r pulses in a reception signal and a generated substantially the same template as the r pulses is small, a pulse number adjusting circuit outputs a pulse number signal representing s pulses in place of the r pulses, and a template generating circuit generates the substantially the same template as the s pulses, whereby the correlation judging circuit judges the correlation degree between the r pulses in the reception signal and the generated substantially the same template as the s pulses. Accordingly, even when a confronted transmitter changes the number of pulses contained in a reception signal, synchronization capture of the reception signal can be established.

Receiver and receiving method

A lamp includes a light emitter enclosing a material emitting light upon receiving irradiation of microwave, and a coil formed on an outer side of the light emitter. In the lamp, a position of the coil with respect to the light emitter is changed in response to a temperature.

Lamp, light-emitting device, and projector

An electro-optic device having a plurality of pixels arranged in a matrix pattern, including: a converging substrate formed of a transparent substrate having groove-shaped prism elements formed in an array pattern, wherein the prism elements are arranged along boundary areas of the pixels, wherein the prism elements each include a plurality of beveled portions arranged on side walls thereof in the direction of the thickness of the converging substrate, and wherein the inclination angle of the beveled portions arranged on an opening end side of each of the prism elements with respect to the normal line of the converging substrate on which the prism elements are formed is smaller than the inclination angle of the other beveled portions.

Converging substrate, electro-optic device, substrate for electro-optic device, projector, and electronic apparatus

An actuator includes: a base section; an object having a body portion and a holding portion holding the body portion in a manner that the body portion is movable against the base section; a movable comb-tooth portion extending from the object side in a direction substantially perpendicular to a formation direction of the holding portion; and a fixed comb-tooth portion which extends from the base section in a direction substantially perpendicular to the formation direction of the holding portion and which is arranged at a position at which the fixed comb-tooth portion is engaged with but having a gap from the movable comb-tooth portion; the fixed comb-tooth portion being composed of a steady-voltage-receiving fixed comb tooth that steadily supplies a drive voltage and a variable-voltage-receiving fixed comb tooth that receives a controlled voltage.

Actuator with Alternating Steady Voltage Combs and Variable Voltage Combs

A hopping control device selects one hopping pattern out of hopping patterns Pto PN, reads out a hopping frequency sequence arranged in the selected hopping pattern from a frequency hopping pattern memory, and sends the hopping frequency sequence to frequency synthesizers as a frequency designation signal by wire at a predetermined period. The frequency synthesizers generate local oscillation signals of a frequency specified by the frequency designation signal, respectively, and output the local oscillator signals to mixers, respectively, to thereby perform communication by a frequency hopping system between a first housing unit and a second housing unit.

Radio communication terminal and radio communication control method

A semiconductor integrated circuit including: a circuit function section; a bus connected to the circuit function section; an information fetch register for fetching data flowing over the bus; and a radio communicating circuit for wirelessly transmitting the data fetched into the information fetch register.

Semiconductor integrated circuit, checking device and method of checking semiconductor integrated circuit

A filter circuit is provided wherein one end of an inductor is connected to one end of a capacitor to form a signal input end. The other end of the inductor is connected to a first switch circuit, and the other end of the capacitor is connected to a second switch circuit. When a lower-frequency signal in a 2.4 GHz band is to be inputted, a low-pass filter circuit is formed by connecting the other end of the inductor to a signal output end and the other end of the capacitor to ground, and when a higher-frequency signal in a 5 GHz band is to be inputted, a high-pass filter circuit is formed by connecting the other end of the inductor to ground and the other end of the capacitor to the signal output end, by manipulating the first and second switch circuits.

Impedance circuit, and filter circuit, amplifier circuit, semiconductor integrated circuit, electronic component, and wireless communications device using the same

A printer that enables a determination whether a failure has occurred in a device during initialization or a radio wave condition is bad. Receive electric field strength during a time period from a time at which a turn-off message is outputted to a time at which turn-on message is outputted and receive electric field strength after the turn-on message is outputted are measured. The measurements are compared with each other and information indicating the condition of each of a plurality of channels is printed out according to the results of the comparison. A user can reference the printed information to determine whether a failure has occurred in a device or the radio wave condition is bad.

Printing device, diagnosing method for printing device, and diagnosing program for printing device

A printing apparatus can be easily initialized, and can easily know an error correcting method. Upon first power-up, a storage unit stores in the apparatus the initialization item data indicating the items to be initialized, and prints out the stored initialization item data. Since the contents to be initialized are printed out, the operation can be performed according to the contents without reading impossible instruction manual, thereby improving the initializing operation efficiency. Additionally, the storage unit stores the error correcting operation data indicating the operating method for correcting an error when the error occurs in the apparatus, and prints out the stored error correcting operation data. Since the error correcting operation method is printed out, an occurring error can be easily corrected by referring to the output method.

Printing apparatus, printing apparatus initializing method, printing apparatus error correcting method, printing apparatus initializing program, and printing apparatus error correction program

Growing community of inventors

Nishitokyo, Japan

Makoto Inoguchi