An improved memory system and method

Abstract

The invention discloses an improved memory system and method. The system comprises a plurality of memory modules, wherein the memory modules are in matrix distribution and are mutually connected in parallel; a data line of each memory module is connected with a display card digital interface through a data latch and receives data signals; an address line of each memory module is connected with the address output end of a binary counter; the CLR end of the binary counter receives field synchronizing signals of the display card digital interface; the CLK end receives point clock signals of the display card digital interface; the binary counter allocates different bus addresses for each memory module; the AB1 and the AB0 of the binary counter are connected with the input end of an encoder; the output end of the encoder outputs gating signals of each data latch, so that the data signals are circularly and sequentially input into each memory module to be stored in turns.

Description

technical field [0001] The present invention relates to an improved memory system and method. Background technique [0002] In order to receive the VGA digital signal sent by the graphics card, the reading and writing speed of the memory must be higher than the transmission speed of the VGA signal, otherwise, the memory cannot be stored correctly. Assuming that the resolution of VGA is 1024×768, and the field frequency is 60Hz, then the frequency of its dot clock is at least 1024×768×60Hz=47185920Hz, and its read and write cycle is about 21.2ns. Of course, 20ns or even faster memory can be used. But the price is relatively high, and the read and write cycle of commonly used cheap static memory such as 62256 can only reach 70ns at the fastest, which cannot meet the speed of dot clock and red, green and blue digital signals. Contents of the invention [0003] In order to solve the above problems, the present invention proposes an improved memory system and method. The prese...

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Problems solved by technology

[0002] In order to receive the VGA digital signal sent by the graphics card, the reading and writing speed of the memory must be higher than the transmission speed of the VGA signal, otherwise, the memory cannot be stored correctly.

Assuming that the resolution of VGA is 1024×768, and the field frequency is 60Hz, then the frequency of its dot clock is at least 1024×768×60Hz=47185920Hz, and its read and write cycle is about 21.2ns. Of course, 20ns or even faster memory can be used. But the price is relatively high, and the reading and writing cycle of commonly used cheap static memory such as 62256 can only reach 70ns at the fastest, which cannot meet the speed of dot clock and red, green and blue digital signals

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