Sony Corporation

Toshihiko Hirose

Akira Itou

Toshiyuki Hirose

Hisato Hirasaka

Tetsuro Makise

Osamu Nakamura

Tsutomu Harada

Hiroyuki Ino

Yoshihiko Deoka

Hitoshi Ozawa

Masanori Imata

Michio Hirai

A wireless power transmission apparatus includes: a transmitter that wirelessly transmits electric power; and a receiver that can receive, in a resonant relation with the transmitter, a transmission signal including the electric power transmitted from the transmitter, wherein the receiver includes a frequency variable unit that can change a reception resonant frequency; a detecting unit that detects reception power; and a control unit that controls the frequency variable unit to perform frequency adjustment such that the reception power detected by the detecting unit is maximized.

Wireless power transmission apparatus

A recording/reproducing apparatus includes an encoding section, a decoding section, and a first judging section. The encoding section is configured to encode data that is to be recorded onto a recording medium into an LDPC (Low Density Parity Check) code. The decoding section is configured to decode the LDPC code read out from the recording medium. The judging section is configured to judge a block with a recording error based on one of a block error flag and an iterative decoding count output from the decoding section.

Recording/reproducing apparatus and recording/reproducing method

Scanning rate in a capacitance change measuring circuit for a capacitive sensor device is enhanced. The circuit includes: an electrode drive section line-sequentially applying an input pulse signal to a plurality of columns of first electrode patterns in the capacitive sensor device; a peak hold circuit storing a peak level of a detection signal extracted from each column of second electrode patterns into a capacitive element as a corresponding potential; a current source initializing the potential in the capacitive element within one period of the input pulse signal; a comparator comparing the potential in the capacitive element with a reference value; and determination sections each determining whether or not an input operation using a human body or the like is executed, based on a timing information and a reference timing information, the timing information representing a timing when the potential held in the capacitive element crosses the reference value.

Capacitance change measuring circuit of capacitive sensor device, capacitive sensor module, method of measuring capacitance change of capacitive sensor device, and electronic device

An image pickup apparatus capable of distributing a picked up image through a network is provided. The image pickup apparatus includes an image pickup unit configured to pick up an image of a predetermined monitoring area and output an image signal thereof; a plurality of encoding units configured to simultaneously convert the image signal into video data of different encoding methods; a moving-object detecting unit configured to detect a moving object entered the monitoring area based on the image signal; an unmoving-object detecting unit configured to detect an unmoving object in the monitoring area based on the image signal; and a transmission control unit configured to control distribution of the video data to the network based on a detection result generated by the moving-object detecting unit and the unmoving-object detecting unit.

Image pickup apparatus and image distributing method

An amount-of-compressed-data control method applicable to image data compression processing for compressing an amount of data is disclosed. The method includes the steps of: performing quantization by: dividing one digital image into multiple blocks each having n&#xd7;n pixels; performing orthogonal transform on each block; and dividing n&#xd7;n conversion coefficients resulting from the conversion by each threshold value of a quantization matrix including n&#xd7;n threshold values each resulting from the multiplication of a predetermined coefficient S (where S is a positive real number); and variable-length encoding the quantized data. In this method, the value of the coefficient S allows the amount of compressed data to fit within a predetermined range of a target amount of data by performing the quantization and encoding by dividing the interval that the coefficient S can take on into multiple intervals and calculating the estimated value of the coefficient S based on the relationship between the amount of compressed image data and the coefficient S, which is defined for each of the divided intervals.

Amount-of-compressed data control method and image data compressing apparatus

There is provided a method of detecting a block sync signal in which a sync signal and code sequence can be distinguished from each other to recognize the head of a block composed of a plurality of code words at the time of data reading or reception. A sync word detector () is supplied with a window signal Sync_window generated based on a parity OK signal supplied from a parity check circuit () and indicating a period between the sync word included in signal read from the medium () and the ID information, and detects the sync word as to a bit string detected by a PRML Viterbi detector () with the use of the Sync_window signal.

Data transfer method, block synchronizing signal detecting method, and reproducing apparatus

A Viterbi decoding method and decoder are provided for achieving a faster operation than the prior art. The Viterbi decoding method and decoder are arranged to determine the most approximate path on two-state state metrics and decode the data on the most approximate path. The Viterbi decoder includes registers 2 and 3 for reading two pieces of sample data, an adder 14 for adding two pieces of sample data read by the registers 2 and 3, and an arrangement located after the adder 14 for determining a path of each state transition by comparing the added result with a given identification of -1, 0 or 1.

Growing community of inventors

Kanagawa, Japan

Toshihiko Hirose