Electrical computers and digital processing systems: memory – Storage accessing and control – Shared memory area
Reexamination Certificate
2007-08-23
2010-11-23
Lane, Jack A (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Shared memory area
C711S005000, C711S147000, C365S230030, C365S230050
Reexamination Certificate
active
07840762
ABSTRACT:
A multipath accessible semiconductor memory device having a mailbox area and a mailbox access control method thereof are provided. The semiconductor memory device includes N number of ports, at least one shared memory area allocated in a memory cell array, and N number of mailbox areas for message communication. The at least one shared memory area is operationally connected to the N number of ports, and is accessible through a plurality of data input/output lines to form a data access path between the at least one shared memory area and one port, having an access right to the at least one memory area, among the N number of ports. The N number of mailbox areas are provided in one-to-one correspondence with the N number of ports and are accessible through the plurality of data input/output lines when an address of a predetermined area of the at least one shared memory area is applied to the semiconductor memory device. An efficient layout of mailboxes and an efficient message access path can be obtained.
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Kim Jin-Kuk
Kim Soo-Young
Kim Yong-Jun
Nam Kyung-Woo
Oh Chi-Sung
Lane Jack A
Samsung Electronics Co,. Ltd
Stanzione & Kim LLP
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