Memory device in mobile phone
US7496377B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Apr 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory device for a mobile phone is provided. The memory device includes a flash memory for storing program data and user data; an interface circuit configured for interfacing the flash memory to a microprocessor; a first memory for copying the program data of the flash memory; and a second memory for executing the program data of the first memory wherein the first and second memories are independent memories. The flash memory is a NAND-type flash memory and the interface circuit is an application-specific integrated circuit (ASIC) including a read-only memory (ROM) for storing program codes and an error correction circuit. Additionally, the first and second memories are preferably random-access memories (RAM). By utilizing a NAND-type flash memory in place of a conventional NOR-type flash memory, the memory device can achieve a larger storage capacity at a lower cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.