SD Card Extension Register for Wireless Function Address Management
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Solution Overview
Problem
Existing secure digital (SD) cards with wireless communication functions face challenges in efficiently managing and controlling the address space of commands due to the wide range of wireless communication functions, leading to insufficient address space and the need for a standardized control procedure.
Innovation Solution
A memory system with a nonvolatile semiconductor memory device, controller, memory, and extension register, where the controller processes commands to read and write data to the extension register, which records information about the type of wireless communication function and its assigned address, allowing for efficient management and control of wireless communication functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If definitions configured to control all wireless communication functions are given, then control capability is improved, but address space of commands becomes insufficient
Solution Approach 1:
The command structure is segmented into a base command portion and an extended parameter portion. The base command handles common operations, while the extended parameters provide additional control capability for specific wireless communication functions without expanding the base command address space.
Solution Approach 2:
The patent introduces a new dimension for command control by adding parameter fields that extend the functionality of base commands. This allows multiple control capabilities to be achieved through parameter variations rather than requiring separate command addresses for each function.
2Adaptability or versatility
If wireless communication function is incorporated in SD card, then functionality is improved, but device complexity increases
Solution Approach 1:
The SD card controller is designed with universal command processing capability that can handle both traditional memory card operations and wireless communication control through a unified command interface, reducing the need for separate dedicated control mechanisms.
Solution Approach 2:
The patent introduces an intermediary command structure that mediates between the host device and the wireless communication function. This intermediary layer translates high-level control requests into specific wireless operations, simplifying the overall system architecture.
Data Source
AI summary
According to one embodiment, a memory system includes a nonvolatile semiconductor memory device, controller, memory, wireless communication function section, and extension register. The controller controls the nonvolatile semiconductor memory device. The memory is serving as a work area of the controller. The wireless communication module has a wireless communication function. The extension register is provided in the memory. The controller processes a first command to read data from the extension register, and a second command to write data to the extension register. The extension register records, an information specifying the type of the wireless communication function in a specific page, and an address information indicating a region on the extension register to which the wireless communication function is assigned.