Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Matsushita Electrical Industrial Co., Ltd.

Nobuaki Minakuchi

Yukio Iijima

Yasushi Ueda

Makoto Okazaki

Hidemi Takahashi

Satoshi Ishikura

Makoto Usui

Katsuhiko Hayashi

Takahiro Nagai

Masayuki Misaki

Kenichi Terai

Yasutoshi Nakama

Koji Watanabe

Masaharu Morita

An optical disc recording and reproducing apparatus for recording and reproducing data in and from an optical disc by the use of the optical disc as a recording medium, comprises analog processing means including a binarization unit for subjecting a signal read from the optical disc to binarization and a servo unit for controlling recording and reproducing a signal in and from the optical disc; synchronous clock generating means for generating a synchronous clock signal which is synchronized with the signal read from the optical disc; address detecting means for detecting address information indicating a physical position on the optical disc based on the signal read from the optical disc, and outputting a signal indicating the address information and a signal indicating that the address has been detected when the address information has been detected; a sector counter for holding a sector count value of a sector as a recording unit on the optical disc, and updating the sector count value according to the synchronous clock signal and the signal output from the address detecting means; and gate signal generation switching means for generating gate a signal which controls the analog processing means, based on one of the sector count value held in the sector counter and information obtained from the analog processing means, according to the signal indicating that the address has been detected, which is output from the address detecting means.

Optical disc recording and reproduction apparatus having automatic gate signal generation modes

Optical disc recording and reproduction apparatus

A semiconductor device, including a dummy diffused layer in the upper part of a substrate, has its noise immunity improved. The dummy diffused layer is formed between analog and digital blocks to eliminate dishing, which usually occurs during a CMP process for defining STI regions. The surface of the dummy diffused layer is covered with an anti-silicidation film at least partially and a dummy gate electrode so as not to be silicided. The dummy gate electrode can be formed along with a normal gate electrode for a transistor.

Method of making a semiconductor device with dummy diffused layers

A semiconductor device, including a dummy diffused layer in the upper part of a substrate, has its noise immunity improved. The dummy diffused layer is formed between analog and digital blocks to eliminate dishing, which usually occurs during a CMP process for defining STI regions. The surface of the dummy diffused layer is covered with an anti-silicidation film at least partially and a dummy gate electrode so as not to be silicided. The dummy gate electrode can be formed along with a normal gate electrode for a transistor. Accordingly, there is no need to add any extra process step to the fabrication process.

Semiconductor device having noise immunity

A data transfer device for successively storing data in a data storage unit or successively reading data from the data storage unit in data processing using an array of m rows&times;n columns, comprises a data storage unit for retaining data which have been stored in storage positions specified by row addresses indicating the positions in the row direction and column addresses indicating the positions in the column direction; a transfer address generation unit for generating transfer addresses comprising the row addresses and the column addresses so that the storage positions for transferred data are successively specified in each of storage blocks having a predetermined size and arranged in the row direction of the data storage unit; and a transfer control unit for controlling data transfer to the data storage unit by using the transfer addresses generated by the transfer address generation unit.

Data transfer device and data transfer method

Optical disc recording and reproducing apparatus having automatic gate signal generation modes

An analog sound signal is outputted. Low-frequency components are selected from the outputted analog sound signal so that a low-pitched sound signal is derived from the analog sound signal. A key of the low-pitched sound signal is lowered so that a very-low-pitched sound signal is derived from the low-pitched sound signal. The analog sound signal and the very-low-pitched sound signal may be converted into corresponding sounds respectively.

Low-pitched sound creator

Growing community of inventors

Ibaraki, Japan

Nobuaki Minakuchi