Card Host LSI Bus Segmentation for High-Speed Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional portable devices, such as cellular phone terminals, face limitations in high-speed data transmission due to the bandwidth of the IO bus connecting the microcomputer module to the card host LSI, which hinders the reduction in size and weight, and increases the mounting area and wiring space, making it difficult to connect multiple card host LSIs and peripheral LSIs.
Innovation Solution
Implementing a card bus with predetermined card bus specifications to connect the microcomputer module to the card host LSI and the removable card or embedded module, allowing high-speed access without relying on the IO bus performance, thereby enabling high-speed data transmission while maintaining the reduction in size and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the IO bus is used to connect the microcomputer module to the card host LSI, then data transmission can be achieved, but the transmission speed is limited by the IO bus bandwidth
Solution Approach 1:
The patent introduces a card bus as an intermediary communication interface between the microcomputer module and the card host LSI. The card bus operates independently from the IO bus, providing a dedicated high-speed communication path specifically for card media access, thereby eliminating the bandwidth limitations of the general-purpose IO bus.
Solution Approach 2:
The patent segments the communication pathways by separating the card bus from the IO bus. The card bus handles all communications related to card media (commands, data, clock signals), while the IO bus handles other peripheral communications. This segmentation allows each bus to be optimized for its specific purpose without interference from other traffic.
2Speed
If the IO bus bandwidth is expanded to improve transmission speed, then data transmission speed increases, but the number of terminals increases and mounting area increases
Solution Approach 1:
The card bus acts as an intermediary that provides high-speed communication without requiring expansion of the existing IO bus infrastructure. By introducing this separate communication channel, the patent achieves high-speed data transmission while maintaining the original IO bus configuration, thus avoiding increased terminal count and mounting area.
3Adaptability or versatility
If multiple card host LSIs are connected to the microcomputer module, then versatility increases, but the IO bus becomes congested and access speed decreases
Solution Approach 1:
The patent segments the communication load by dedicating the card bus exclusively to card media communications. Multiple card host LSIs can be connected to the card bus without interfering with each other or with IO bus operations. Each card host LSI gains direct access to the high-speed card bus, eliminating IO bus congestion even when multiple cards are simultaneously accessed.
Solution Approach 2:
The card bus serves as a universal high-speed communication interface that can accommodate multiple card host LSIs and various types of card media (SD cards, memory cards, etc.). This multi-functional interface provides consistent high-speed access regardless of the number or type of cards connected, enhancing both versatility and performance.
Data Source
AI summary
In a set device having a card host LSI, high-speed data transmission to a removable card or the like is realized without hindering a reduction in size and weight. The card host LSI and the removable card are connected to a card bus complying with predetermined card bus specifications. A microcomputer module and the card host LSI are connected also by a card bus complying with the predetermined card bus specifications.