Katsumi Takeda

Multiprocessor system statically dividing processors into groups allowing processor of selected group to send task requests only to processors of selected group

Multi-processor system having shared memory for storing the communication information used in communicating between processors

Data processing unit which can access more registers than the registers indicated by the register fields in an instruction

Virtual machine system having an extended storage

Optical recording and reproducing system having an accurate high-speed optical head positioning apparatus

Magnetic recording apparatus with capability of recording signals of a plurality of different television systems

Audio signal recording and playback apparatus of magnetic recording and playback apparatus

Digital radiocommunication terminal

Signal processing method and its device

Apparatus for tracking an optical disc