Data memory device having an exclusive-or function and method of reading data therefrom
AssigneeKyoto University
InventorHiroyuki Ogino
Life of this patent
Estimating the term…
Abstract
A memory device with an Exclusive-OR function includes memory cells for storing a data of true or false value. Input data is written into at least one selected memory cell separately or simultaneously as a positive or negative logic. The stored data is read from at least one selected memory cell separately or simultaneously, e.g., as a positive logic data if an identity-retrieval data has a true value, and as a negative logic data if the identity-retrieval data has a false value.
Claims13
A method of reading a data memory device having an Exclusive-OR function, said device being adapted to calculate an Exclusive-OR of a data written into a storing section of at least one memory cell, and an identity-retrieval data, said method comprising the steps of:
- inputting said identity-retrieval data and the data to be stored;
- and
- reading the data written into said storing section as one of a first logic data and a second logic data if said identity-retrieval data has a true value, and as the other of said first and second logic data if said identity-retrieval data has a false value.
A memory device having an Exclusive-OR function, comprising:
- storing means having memory cells, each of which having a storing section adapted to store a data as one of a true value and a false value;
- input means for inputting a) the data to be stored in at least one of said memory cells and b) an identity-retrieval data;
- writing means for writing the data, input through said input means, into at least one of said memory cells separately or simultaneously, as one of first and second logic data;
- reading means for reading the data stored in at least one of said memory cells separately or simultaneously;
- selecting means for selecting at least one of said memory cells from which the data is to be read, and at least one of said memory cells in which the data is to be stored;
- and
- output means for outputting the data read by said reading means;
- wherein said reading means being adapted to read the data stored in said storing section as one of said first logic data and said second logic data if said identity-retrieval data has the true value, and as the other of said first logic data and said second logic data if said identity-retrieval data has the false value.
Dependencies are inferred from the claim text.