Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Hiroshi Itou

Akihiko Iwata

Yoichiro Tabata

Tatsuki Okamoto

Yoshihiro Ueda

Tokumichi Murakami

Takashi Kumagai

Koichi Magai

Mitsuyoshi Suzuki

Osamu Kitade

Ryousuke Fujii

Koutarou Asai

Shinji Murata

The digital watermark embedding apparatus includes: a storing unit () for storing in advance at least one embedding function, at least one image converting program, and at least one image processing program that are required for a digital watermark embedding process, and storing in advance combination process information in which a process ID is assigned to each combination of those processing functions; an embedding process selecting unit () for selecting, as particular combination process information, one of a plurality of pieces of the combination process information; and an embedding unit () for obtaining from the storing unit () the embedding function, the image converting program, and the image processing program which are included in the selected particular combination process information, embedding particular embedding information into multimedia data, and generating determination information including the process ID corresponding to the particular combination process information.

Digital watermark embedding apparatus, digital watermark detecting apparatus, and digital watermark system

The VBL variable circuit is provided with a VBL generating circuit, a test mode judging circuit, a large pump and a small pump, and makes a voltage for precharging a bit line variable. Thus, a defective bit line having little margin with respect to a bit line precharging voltage of a high level or a low level can be detected.

Semiconductor integrated circuit with variable bit line precharging voltage

A recording apparatus is provided with a housing for blocking off external light, a supporting base placed in the housing, and a plurality of heating elements, which are arranged on the supporting base in a direction of width of recording paper, for performing the color development of recording paper. The recording apparatus is further provided with a light emitting device, which is placed on the supporting base in such a way as to extent in a direction of width of recording paper, for coming near to recording paper and for fixing an image thereon, and a paper feeding mechanism, which is placed in the housing, for conveying recording paper onto the heating elements and the light emitting device. Thus, the recording apparatus can be miniaturized. Further, the reliability of the recording apparatus can be enhanced. Consequently, the maintenance of the recording apparatus can easily be maintained.

Recording apparatus and recording method

A pulse generator circuit which comprises a power supply source for outputting a high voltage signal. A first capacitor is charged with the high voltage signal output by the power supply source. A load device is supplied with the high voltage signal charged in the first capacitor. A semiconductor switch together with the first capacitor and the load constitute a closed loop. A first diode is inserted between the power supply source and the closed loop. A second diode is inserted in a closed loop and operates to suppress electrical vibrations. A second diode may have an opposite polarity to that of the first diode. A snubber circuit may also be inserted in parallel across the second diode.

Semiconductor switching apparatus

In a pulse generator circuit for a laser unit etc., plural semiconductor switches arranged in matrix alignment on an outer surface of a first tube are connected in series and parallel with one another, and an end of each series-connection of the semiconductor switches is electrically connected to a second tube provided in coaxial alignment to the first tube, thereby realizing a synthetic semiconductor switch for switching high voltage and large current between the other end of the series-connection of the semiconductor switches and the second tube.

Growing community of inventors

Tokyo, Japan

Hiroshi Itou