| Patent Number |
Title Of Patent |
Date Issued |
| 5928315 |
Apparatus and method for calculating B.sup.c (mod n) |
July 27, 1999 |
| Apparatus method for calculating the remainder of B.sup.C modulo n at high speed with minimum hardware resources, while securing the safety of the key in a cryptographic system. The apparatus comprises circuitry including registers for executing an initial and normal cycles, cumulating a |
| 5923839 |
Data storage system, data transfer method, and data reconstruction method |
July 13, 1999 |
| A data storage system is provided having a faster data transfer rate and reduced complexity though improved control of timing. The data storage system has a plurality of storage devices and a plurality of data buses through which data are transferred. An input/output unit interleaves a |
| 5844910 |
Flash-erase-type nonvolatile semiconductor storage device |
December 1, 1998 |
| An array of memory cells is physically divided into a data area and a tag area so that respective parts of the two areas share a word line but can be separately erased en bloc. The data area and tag area sharing one word line constitute a single logical unit. In the logical unit, the tag |
| 5787493 |
Control method and apparatus for direct execution of a program on an external apparatus using a |
July 28, 1998 |
| With the present invention, the page table of the program code non-continuously placed in an external storage device using randomly accessible and rewritable memory is built into an executable sequence in a virtual address space of the CPU according to the execution order. By referri |
| 5734816 |
Nonvolatile memory with flash erase capability |
March 31, 1998 |
| A nonvolatile memory with flash erase capability includes a plurality of clusters each having a plurality of sectors, each of the sectors holding the attribute information for identification. A cluster information sector is placed at the top of a cluster to which it belongs. A data secto |
| 5598370 |
Nonvolatile memory with cluster-erase flash capability and solid state file apparatus using the |
January 28, 1997 |
| A nonvolatile memory-with cluster-erase flash capability. A cluster information sector is included in each of N clusters, the cluster information sector of each cluster being written with the sequence number assigned to the cluster so that no two clusters have the same sequence numbe |
| 5546402 |
Flash-erase-type nonvolatile semiconductor storage device |
August 13, 1996 |
| An array of memory cells is physically divided into a data area and a tag area so that respective parts of the two areas share a word line but can be separately erased en bloc. The data area and tag area sharing one word line constitute a single logical unit. In the logical unit, the tag |
| 5524230 |
External information storage system with a semiconductor memory |
June 4, 1996 |
| To provide an external storage system using a semiconductor memory in which the data reading and writing between the host CPU can be processed faster than the conventional magnetic disk, and only a particular sector is not frequently written and erased so that the whole memory is effecti |
| 5509018 |
Flash-erase-type nonvolatile semiconductor storage device |
April 16, 1996 |
| An array of memory cells is physically divided into a data area and a tag area so that respective parts of the two areas share a word line but can be separately erased en bloc. The data area and tag area sharing one word line constitute a single logical unit. In the logical unit, the tag |
| 5457658 |
Nonvolatile memory with cluster-erase flash capability and solid state file apparatus using the |
October 10, 1995 |
| A nonvolatile memory with cluster-erase flash capability. A cluster information sector is included in each of N clusters, the cluster information sector of each cluster being written with the sequence number assigned to the cluster so that no two clusters have the same sequence numbe |
| 5448733 |
Data search and compression device and method for searching and compressing repeating data |
September 5, 1995 |
| This is a variable length data search apparatus which uses a latch, added to each word of a cell array. In this apparatus, the search operation is self controlled by using the previous matching signals stored in the latches. A character string (ABCA), from a data string (BABCABB . . . ), |
