First-in-first-out memory capable of simultaneous readings and w

Details First-in-first-out memory capable of simultaneous readings and w First-in-first-out memory capable of simultaneous readings and w

1986-05-27

1988-10-18

Hecker, Stuart N.

Static information storage and retrieval

Read/write circuit

Serial read/write

365189, G11C 700

Patent

active

047792345

ABSTRACT:
A FIFO memory using one of the ports of a RAM having two or more ports for writing and another port for reading is disclosed. Writing into the FIFO memory is done instantly, while reading from the FIFO memory is effected by holding the output of the preliminarily accessed RAM until the end of a reading operation. The output of the RAM is updated by a request from outside and according to the state of the FIFO memory, and this operation is done simultaneously with reading or writing.

REFERENCES:
patent: 4415994 (1983-11-01), Ive et al.
patent: 4433394 (1984-02-01), Torii et al.
patent: 4507760 (1985-03-01), Fraser
patent: 4535427 (1985-08-01), Jiang
patent: 4541076 (1985-09-01), Bowers et al.
patent: 4616338 (1986-10-01), Helen et al.

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