Patents by Inventor Chiaki Araki

Chiaki Araki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Information processor operative both in direct mapping and in bank mapping, and the method of switching the mapping schemes
    Patent number: 5127096
    Abstract: An information processing apparatus includes a program memory (4, 40) and circuitry for switching mapping schemes so as to deal with both direct and bank mapping schemes without alteration of programs. The program memory (4) includes a first memory area (14, 15) formed of a plurality of memory blocks for storing a first program (100) for the bank mapping and a second memory area (16, 17) utilized as a memory block for storing a second program for direct mapping. In the bank mapping, each memory block is mapped into a same address area of an address space of the processor. In the direct mapping, the first and second memory areas are mapped in one-to-one correspondence into the address space. Alternative program memory (40) includes a first memory block (50) storing a first program and a second memory block (60) storing a second program. A predetermined identification information ("JA") is stored in a predetermined memory location of the second memory block.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: June 30, 1992
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yutaka Kaneko, Tatsuyuki Ohama, Masami Tsukagoshi, Hideyuki Maehara, Masashi Yawata, Minoru Tada, Noriyuki Aoki, Chiaki Araki