Flash memory backup system and method
First Claim
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1. A flash memory system comprising:
- (a) at least two flash memory devices, wherein at least one page buffer is allocated within each of said at least two flash memory devices; and
(b) a controller for controlling a programming of data into a first said flash memory device by steps including transmitting said data from said controller both to a page buffer of said first flash memory device and to a page buffer of a second said flash memory device.
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Abstract
A flash memory system includes a flash controller for controlling operation of at least two flash memory devices. A page buffer is allocated within each flash memory device, such that one page buffer functions as a designated target buffer and another page buffer functions as a mirror buffer. The flash controller transmits the page data to two flash memory devices simultaneously, such that no backup of the page data is required to be kept in the flash controller. Hence, there is no delay in writing the next page data from a host computer to the flash controller.
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Citations
17 Claims
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1. A flash memory system comprising:
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(a) at least two flash memory devices, wherein at least one page buffer is allocated within each of said at least two flash memory devices; and
(b) a controller for controlling a programming of data into a first said flash memory device by steps including transmitting said data from said controller both to a page buffer of said first flash memory device and to a page buffer of a second said flash memory device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for managing a flash memory system, the method comprising the steps of, upon the system receiving an instruction from a host to store data, obeying the instruction by:
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(a) transmitting data to a first page buffer allocated within a first flash memory device of the flash memory system; and
(b) also transmitting said data to a second page buffer allocated within a second flash memory device of the flash memory system. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification