Serial-Parallel Conversion Circuit With Internal Clock Generation
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Solution Overview
Problem
Existing semiconductor devices with serial-parallel conversion circuits require either a signal line for sending a clock signal or an accurate frequency oscillator, increasing manufacturing costs and complexity.
Innovation Solution
A semiconductor device design that includes an input port, pulse generation circuit, and serial-parallel conversion circuit, utilizing a delay circuit to generate a clock signal internally without the need for an external clock signal line or accurate frequency oscillator, allowing for cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clock synchronous input circuit is used, then the serial-parallel conversion can be performed synchronously, but an additional signal line for sending a clock signal is required
Solution Approach 1:
The patent extracts the clock signal generation function from the external environment and relocates it to an internal pulse generation circuit. The delay circuit is connected to the input port to generate a clock signal internally based on the received signal, eliminating the need for an external clock signal line while maintaining synchronous conversion capability
Solution Approach 2:
The delay circuit serves multiple functions: it generates the clock signal for synchronous conversion, provides timing control for the serial-parallel conversion circuit, and eliminates the need for separate clock signal transmission infrastructure. This multi-functionality reduces device complexity while maintaining reliability
2Device complexity
If an asynchronous input circuit is used, then no clock signal line is needed, but an accurate frequency oscillator is required
Solution Approach 1:
The patent replaces the expensive accurate frequency oscillator with a simpler delay circuit that generates clock signals based on the received signal timing. This substitution uses readily available delay elements rather than precision oscillators, significantly reducing manufacturing costs while maintaining functional equivalence
Solution Approach 2:
The delay circuit generates the clock signal autonomously based on the timing characteristics of the received signal itself, without requiring external oscillator control. The circuit serves itself by using the input signal's temporal properties to drive the conversion process, eliminating the need for separate oscillator components
3Manufacturing precision
If external clock signal lines and accurate oscillators are used, then precise timing is achieved, but manufacturing costs increase
Solution Approach 1:
The patent changes the approach from using fixed-frequency oscillators to using variable delay circuits that adapt to the received signal timing. By adjusting the delay parameters based on actual signal characteristics rather than relying on precise oscillator frequencies, the system maintains timing precision while reducing manufacturing costs
Data Source
AI summary
A semiconductor device includes an input port, a pulse generation circuit, and a serial-parallel conversion circuit. The input port is connected to an input port of the pulse generation circuit and a data signal input port of the serial-parallel conversion circuit. A signal received at the input port is a start bit and a data signal. The pulse generation circuit includes a delay circuit. A clock signal output port of the pulse generation circuit is connected to a clock signal input port of the serial-parallel conversion circuit.