Dual Communication Interface Circuit for Speed-Optimized Data Transfer
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Solution Overview
Problem
Existing RF transmitter circuit devices face inefficiencies due to the need for different communication speeds for transmission action setting information and data, leading to prolonged data transmission times and increased power consumption, particularly in applications like automobile keyless entry modules where power saving is crucial.
Innovation Solution
A circuit device with separate communication paths for high-speed serial signal reception and low-speed transmission data input, allowing efficient communication by utilizing a serial interface for fast data transfer of action setting information and a dedicated input terminal for slower data transfer, along with an oscillation circuit that can quickly oscillate and generate a transmission clock signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single serial communication interface is used for both transmission action setting information and transmission data, then the device complexity is reduced, but the communication efficiency deteriorates because both types of data must be transmitted at the slower speed required for transmission data
Solution Approach 1:
The single serial communication interface is segmented into two separate communication interfaces: a first serial communication interface for transmitting action setting information at a first communication speed, and a second serial communication interface for transmitting transmission data at a second communication speed. This segmentation allows each interface to be optimized for its specific data type, resolving the contradiction between device complexity and communication efficiency.
Solution Approach 2:
Different communication interfaces are provided with different local qualities (different communication speeds) according to the specific requirements of the data being transmitted. The first interface is optimized for high-speed transmission of action setting information, while the second interface is optimized for the specific speed requirements of transmission data, thereby improving overall communication efficiency without unnecessarily increasing device complexity.
2Reliability
If communication is performed at the slower speed required for transmission data, then data transmission accuracy is improved, but the transmission time increases and power consumption increases
Solution Approach 1:
The communication channel is segmented into two separate interfaces with different speed characteristics. The first interface transmits action setting information at a faster speed while maintaining necessary accuracy, and the second interface transmits transmission data at the slower speed required for accuracy. This segmentation resolves the contradiction by allowing different parts of the communication system to operate at different speeds appropriate to their specific requirements.
Solution Approach 2:
The communication speed parameter is changed differently for different data types. Action setting information is transmitted at a first communication speed optimized for its requirements, while transmission data is transmitted at a second communication speed optimized for its requirements. This parameter differentiation allows each data type to achieve optimal transmission accuracy without unnecessary time loss.
3Productivity
If the circuit device remains in an active state for longer periods to complete data transmission, then data transmission completeness is improved, but power consumption increases
Solution Approach 1:
The data transmission process is segmented into two parallel communication channels that can operate simultaneously or independently. This allows the circuit device to complete both types of data transmission more efficiently, reducing the total active time required and thereby reducing power consumption while ensuring transmission completeness.
Solution Approach 2:
Action setting information is transmitted and processed in advance through the first serial communication interface before transmission data is sent through the second interface. This preliminary action prepares the system for efficient data transmission, allowing the circuit device to enter low-power states more quickly and reducing overall power consumption while ensuring complete data transmission.
Data Source
AI summary
To provide different paths for communication of a serial signal required for high-speed communication and communication of transmission data that may be handled in low-speed communication, a circuit device includes a serial interface that receives a serial signal transmitted from a controller at a first communication speed, a transmission data input terminal that receives transmission data transmitted from the controller at a second communication speed slower than the first communication speed, and a transmission circuit that outputs a transmission signal corresponding to the transmission data based on the serial signal and the transmission data.