SD Card Mobile Network Access Device Size Reduction
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Solution Overview
Problem
Existing mobile network access devices are too large to be integrated into small ultra-thin terminal products, failing to meet the development requirements of these devices.
Innovation Solution
The wireless Internet access function is integrated into a Secure Digital (SD) card, where data or commands are sent to either the baseband processing unit or storing unit based on logical addresses in the SD command, reducing the size of the mobile network access device and enabling the design of smaller terminal products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If wireless Internet access function is integrated into SD card, then device size is reduced, but device complexity increases
Solution Approach 1:
The patent combines wireless network access functions (baseband processing unit, RF processing unit, antenna) with storage functions into a single SD card device. The controller manages both file system operations and network communications, merging previously separate functions into one integrated component.
Solution Approach 2:
The SD card is designed to perform multiple functions: data storage, wireless network access point operations, and communication with host devices. The controller can operate in different modes (file access mode, network access mode) to serve diverse purposes through a single device.
2Volume of moving object
If wireless network access functions are integrated into SD card, then terminal product size is reduced, but manufacturing complexity increases
Solution Approach 1:
By integrating baseband processing, RF processing, and storage functions into a single SD card module, the patent reduces the number of separate components that need to be manufactured and assembled into terminal products, simplifying the overall manufacturing process despite the increased functionality within the card itself.
Solution Approach 2:
The patent separates wireless network access functions into a standalone SD card module that can be manufactured independently and then inserted into various terminal devices. This modular approach allows specialized manufacturing of the network card while keeping terminal device production simpler.
3Productivity
If logical address mapping is used to route commands, then device operation becomes more efficient, but control complexity increases
Solution Approach 1:
The controller acts as an intermediary that receives SD commands containing logical addresses and routes them to the appropriate internal units (baseband processing or storage). This centralized mediation simplifies the control logic compared to having distributed decision-making across multiple components.
Solution Approach 2:
The patent uses logical address parameters in SD commands to dynamically route operations to different functional units. By changing the routing behavior based on address parameters rather than hardcoding different command paths, the system achieves efficient command routing with manageable control complexity.
Data Source
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AI summary
A mobile network access device, system and method are disclosed. The method includes: sending data or a command to a storing unit or a baseband processing unit according to a logical address in a Secure Digital (SD) command, where the SD command is a result of converting a Small Computer System Interface (SCSI) Command Descriptor Block (CDB) after a terminal device encapsulates the received data or command into the SCSI CDB. In the embodiments of the present invention, the wireless Internet access function is integrated into an SD card; the mobile network access device determines to send the data or command to the baseband processing unit or storing unit according to the logical address in the SD command, which reduces the size of the mobile network access device and enables developers to design smaller terminal products.