Sony Corporation

Renesas Electronics Corporation

Makoto Toyoshima

Takao Inoue

Yoshihiro Murakami

Fumiaki Henmi

Tetsuo Kani

Minoru Kawahara

Shoji Kosuge

Hiroshi Kanno

Kazuki Watanabe

Kenji Uehara

Yosuke Tanno

Akihiro Toriyama

Makoto Shindo

There is included a detection unit for detecting a magnitude of a surplus of a direct current to a source voltage generated by a voltage generation unit generating the source voltage from the direct current obtained by rectifying a signal inputted from an antenna terminal. A data processing unit operating at the source voltage and performing data processing on a transmission/reception signal includes a clock control unit for determining a frequency of a clock signal for the data processing based on the magnitude of the surplus current detected by the detection unit in a state where a frequency of the clock signal is set to a predetermined reference frequency. Since the power consumed by the data processing unit at the time of detecting the surplus of the direct current is determined by the specific reference frequency, the surplus of the direct current can be detected as an absolute surplus.

Contactless communication device, contactless IC card, and mobile information terminal

Input terminals to which two types of serial data with similar formats are sent are disposed. Video data sent to the normal dubbing input terminal is data that has not been compressed/encoded. Data sent to the straight dubbing input terminal is data that has been compressed and encoded. Data received from the input terminal includes a sync error flag (error flag for each sync block) that is OR output data of data added by a reproducing VTR and transmission error information. The sync error flag is sent to an ECC encoder through a format converter not through an BRR encoder. An output signal of an ECC encoder is recorded to a magnetic tape by recording heads through a recording driver.

DIGITAL INFORMATION SIGNAL RECORDING APPARATUS FOR RECORDING A DIGITAL INFORMATION SIGNAL TO A RECORD MEDIUM AND DIGITAL INFORMATION SIGNAL REPRODUCING APPARATUS FOR REPRODUCING A DIGITAL INFORMATION SIGNAL FROM A RECORD MEDIUM

A line number LN is extracted from serial data corresponding to BTA S-004 standard. The line number LN is placed as LN and LN to each of a luminance signal Y and color difference signals Pr/Pb of a 4:2:2 signal. The 4:2:2 signal is converted into a 3:1:1 signal by a bandwidth-compressing means. In addition, the 3:1:1 signal is re-arranged to two-channel signals Ch and Ch with the same format at a transmission rate of 46.40625 MHz. Thereafter, the, signals are processed at the transmission rate of 46.40625. The line number LN is placed as LN and LN at the beginning of one horizontal interval.

Recording/reproducing apparatus and method for including line numbers

Reproducing heads reproduce signals from a tape in advance of recording heads for a time period equivalent to a system delay. An ECC decoder corrects an error of a signal received from each reproducing head. A BRR decoder decompresses and decodes the signal received from the ECC decoder. A concealing circuit interpolates the signal received from the BRR decoder. An output signal of the concealing circuit is sent back to a selector of the recording system. The selector switches between a signal received from an input terminal and the reproduced signal at the end of each field. An intra-field encoding process or an intra-frame encoding process can be selected as an compressing and encoding process. Information that represents the selected encoding process is recorded on the tape.

Digital video signal recording/reproducing apparatus and method thereof

A time code signal recording circuit wherein necessary adjustment is performed not mechanically but electrically so that a relationship specified by a tape format can be satisfied with a high degree of accuracy. The time code signal recording circuit comprises a reference frame signal generating circuit, an advanced phase frame signal generating circuit for advancing, in phase, a reference frame signal from the reference frame signal generating circuit by a predetermined time, a time code signal generating circuit for generating a time code signal in accordance with the advanced phase frame signal, a time code signal delaying circuit for delaying the time code signal by a predetermined delay amount, and a time code signal recording head for recording a time code signal outputted from the time code signal delaying circuit. The predetermined delay amount is set to a value determined from an amount of displacement of a time code signal from a video signal recorded in a specific tape format so as to compensate for such displacement.

Apparatus for delaying and recording time code signals

Growing community of inventors

Kanagawa, Japan

Makoto Toyoshima