Associative memory using recirculatory shift register cells

Details Associative memory using recirculatory shift register cells Associative memory using recirculatory shift register cells

1975-04-24

1976-10-05

Hecker, Stuart N.

Communications: electrical

Digital comparator systems

340173RC, G11C 1500, G11C 2100

Patent

active

039848213

ABSTRACT:
In an associative memory, each cell 20 (FIG. 2) includes a recirculatory shift register 30 in which information is stored, a comparator 31 for comparing the stored information with a key fed on line 22, a gate 32 for passing the results of the comparison only in a key field defined by key field signals on line 23, and a flip-flop 33 which is set to 1 if the comparison fails. Flip-flop 33 controls reading from the cell. A flip-flop 37 is used to record whether the cell is full or empty, and a compare chain 40a, 40b passing through all cells in sequence is energized onwards from the first cell in which comparison is successful.
A further development permits sequential retrieval and searching for the next key above a desired key if the desired key itself is not in the memory.

REFERENCES:
patent: 3742466 (1973-06-01), Hamm et al.
patent: 3845474 (1974-10-01), Lange et al.
Tsui, Associately-Memory Sequencing Arrangement, IBM Technical Disclosure Bulletin, vol. 15, No. 7, 12/72, pp. 2342-2343.
Gardner et al., Subselection in Associative Store, IBM Technical Disclosure Bulletin, vol. 12, No. 11, 4/70, pp. 2038-2039.
8/17/70, ET AL., Associative Memory Chips: fast, Versatile -0 and here., Electronics, 8/17/70, pp. 96-100.

Affiliated with

Also associated with

Rating

Associative memory using recirculatory shift register cells does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Associative memory using recirculatory shift register cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Associative memory using recirculatory shift register cells will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-658773