Signal Transmission Interface for Digital Broadcast Receivers
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Solution Overview
Problem
The integration of digital broadcast receivers with consumer audio products is hindered by the large size and high pin count of existing board connectors, necessitating a universal and simplified signal transmission interface.
Innovation Solution
A digital broadcast receiving device equipped with a USB interface that converts digital audio signals into USB audio signals and control signals into serial transmission bus signals, utilizing a USB audio format encoding unit, USB hub, and USB/serial transmission bus bridge unit to reduce pin count and facilitate integration with host devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a board connector with at least twenty-one pins is used for digital broadcast receiver integration, then signal transmission capability is sufficient, but the connector size becomes large and integration becomes difficult
Solution Approach 1:
The patent applies USB interface technology to create a universal signal transmission interface that can handle multiple functions (audio data, control signals, power) through a standardized connector, eliminating the need for specialized multi-pin board connectors while maintaining full digital broadcast receiver functionality
Solution Approach 2:
The patent changes the interface parameters from traditional multi-pin board connector specifications to USB interface specifications, transforming the physical and electrical characteristics of the connection while preserving signal transmission capabilities through protocol-level functionality
2Ease of operation
If a simplified interface with reduced pin count is used, then integration ease improves, but signal transmission completeness may be compromised
Solution Approach 1:
The USB interface acts as an intermediary that translates and transmits multiple types of signals (audio data, control commands, power) through a unified protocol, ensuring complete signal transmission while maintaining simplified physical connectivity through a standard USB connector
Solution Approach 2:
The USB interface consolidates multiple signal transmission functions into a single universal connector type, allowing digital broadcast receivers to transmit audio data, receive control signals, and obtain power through one integrated interface rather than requiring separate dedicated connectors for each function
Data Source
AI summary
A signal transmission interface includes: a USB audio format encoding unit adapted to be coupled to a digital broadcast receiving end, for converting a digital audio signal that originates from the digital broadcast receiving end into a USB audio signal; a USB hub coupled to the USB audio format encoding unit and adapted to be coupled to a host end, for transmitting the USB audio signal to the host end and receiving a USB control signal that originates from the host end; and a USB/serial transmission bus bridge unit coupled to the USB hub and adapted to be coupled to the digital broadcast receiving end, for converting the USB control signal that is transmitted from the USB hub into a serial transmission bus control signal, and transmitting the serial transmission bus control signal to the digital broadcast receiving end.