Bi-directional HSDI Transceiver Multiplexer Switching
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Solution Overview
Problem
Conventional high-speed digital interfaces (HSDI) like HDMI are unidirectional, limiting their applications and increasing production costs due to the need for additional components like tuners in devices that cannot receive signals, such as DVD recorders.
Innovation Solution
A bi-directional HSDI transceiver with a transmitter, receiver, and a controller that uses multiplexers to switch between source and sink device functions, enabling bi-directional communication by selectively coupling interfaces and controlling switching operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional unidirectional HSDI interface is used, then the interface structure is simple, but the application flexibility is limited and production costs increase due to additional components
Solution Approach 1:
The patent implements dynamic functionality by enabling the HSDI interface to switch between unidirectional source-to-sink mode and bidirectional mode. The interface can dynamically adapt its communication direction based on the operational requirements of connected devices, allowing a DVD recorder to receive TV signals from a digital television when needed, thereby significantly improving application flexibility without requiring permanent structural changes.
Solution Approach 2:
The patent makes the HSDI interface universal by enabling it to perform multiple functions: it can operate as a traditional unidirectional interface for source-to-sink transmission, and it can also function as a bidirectional interface allowing sink-to-source transmission. This multi-functionality eliminates the need for additional specialized components in devices like DVD recorders, as the same interface can adapt to different communication scenarios.
2Ease of manufacture
If a unidirectional HSDI interface is used, then the interface design is simple, but production costs increase due to the need for additional components like tuners
Solution Approach 1:
The patent enables the HSDI interface to serve multiple functions, including both traditional source-to-sink transmission and new bidirectional sink-to-source transmission. This universality allows devices like DVD recorders to utilize the existing HSDI interface for receiving TV signals from digital televisions, eliminating the need to manufacture and install additional tuners and significantly reducing production costs.
Solution Approach 2:
The patent implements self-service functionality where the HSDI interface automatically detects the operational mode and switches between unidirectional and bidirectional operations based on the connected devices and communication requirements. This self-service capability allows the interface to provide signal reception and transmission functions without requiring manual intervention or additional hardware components, thereby reducing manufacturing complexity and cost.
3Adaptability or versatility
If a bidirectional HSDI transceiver is implemented, then device functionality and application flexibility are improved, but the device complexity increases due to additional components like multiplexers and controllers
Solution Approach 1:
The patent merges the bidirectional communication functionality into the existing HSDI transceiver structure by integrating multiplexers and controllers that work together with the transmitter and receiver. The multiplexer selectively couples the transmitter or receiver to the interface, and the controller manages the switching operations, combining these functions into a unified bidirectional transceiver system that maintains coherence with the original HSDI design.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the multiplexer and controller to automatically detect the operational mode and switch between unidirectional and bidirectional functions before actual communication begins. The controller pre-establishes the appropriate connection configuration based on the connected devices, ensuring that the bidirectional capability is ready to activate without requiring complex real-time decision-making during data transmission.
Data Source
AI summary
A high-speed digital interface (HSDI) transceiver with bi-directional HSDI function includes a transmitter, a receiver, a first multiplexer, and a controller. The first multiplexer is selectively coupled to the transmitter or the receiver in order to let the HSDI transceiver act as a source device or a sink device respectively. The controller is coupled to the first multiplexer for controlling a switching operation of the first multiplexer. When the HSDI transceiver is connected to an HSDI source device, the controller controls the first multiplexer to couple to the receiver to let the HSDI transceiver act as the sink device, and when the HSDI transceiver is connected to an HSDI sink device, the controller controls the first multiplexer to couple to the transmitter to let the HSDI transceiver act as the source device.