Sony Corporation

Sony Semiconductor Solutions Corporation

Shinichi Kitazono

Fumio Ishikawa

Seiji Kobayashi

Akira Sato

Toshihiro Fujiki

Koichi Ohya

Hiroshi Numata

Toshihiro Yamaguchi

Shinichi Tsutsumi

Naoyasu Gamou

Tamotsu Kogo

An object of the present invention is to secure a relative relationship when positions are displayed by use of position information transmitted from a plurality of wireless communication devices. Each of the wireless communication devices of the present invention includes a position information acquisition unit and a transmission unit. The position information acquisition unit acquires the position information of the wireless communication devices by the GPS, for example. At that time, the position information acquisition unit also acquires time information when the position information is acquired. The transmission unit transmits transmission data including the position information and the time information when the position information is acquired in a predetermined transmission slot.

Wireless communication device, information processing device, and processing method therefor

The invention provides a television reception circuit wherein a front end circuit of a television receiver is integrated and outputting of an image frequency is suppressed. The television signal reception circuit comprises an integrated circuit which in turn includes an automatic gain circuit for controlling a level of an input signal, first and second frequency mixture circuits to which an output of the automatic gain circuit is inputted, a &pgr;/2 phase shifting circuit for supplying local oscillation frequencies having a phase difference of &pgr;/2 from each other to the first and second frequency mixture circuits, first and second &pgr;/4 phase shifting circuits for shifting phases of outputs of the first and second frequency mixture circuits by &plus;&pgr;/4 and &minus;&pgr;/4, respectively, and an addition circuit for adding outputs of the first and second &pgr;/4 phase shifting circuits. The television signal reception circuit outputting a television signal inputted to the integrated circuit through a variable frequency tuning circuit as an intermediate frequency signal. Also an automatic phase shift control circuit and an equal amplitude addition circuit suitable for use with a television signal reception circuit are disclosed.

Television signal reception circuit, automatic phase shift control circuit and equal amplitude addition circuit

An integrated oscillation circuit used for frequency conversion circuit in which UHF frequency conversion and VHF frequency conversion are selectively energized to use a common IF amplifier. The integrated oscillation circuit is used for a local oscillation circuit. The integrated oscillation circuit including a connection terminal connected to an external resonance circuit and an input line of a mode switching signal which is set at a different level in response to an operation mode, an oscillation element, a bias terminal of which is connected to the connection terminal, a detection circuit detecting the level of the mode switching signal applied to the bias terminal of the oscillation element, and a switching circuit turning on and off a power source for driving the oscillation element in response to the level detected at the detection circuit.

Integrated oscillation circuit used for frequency conversion circuit

A Digital Phase Comparator has a simplified logic circuit in which Nand Circuits provide UP and DOWN signals containing phase information about E and F signals.

Digital phase comparator for use in a phase lock loop

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Kanagawa, Japan

Shinichi Kitazono