Display Signal Transmission Using Embedded Control Channels
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Solution Overview
Problem
The existing mini low voltage differential signaling (mini-LVDS) interface in display systems requires a large number of channels for communication between the timing controller and source drivers, leading to increased circuit area and cost.
Innovation Solution
The method involves transmitting a reset signal embedded in a first data signal to source drivers via a first data channel, followed by generating and transmitting control signals embedded in a second data signal via a second data channel, allowing display data to be transmitted via one or more data channels after the reset and control signals are set, thereby reducing the number of control channels needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate control channels are used for transmitting control signals to source drivers, then reliable control signal transmission is achieved, but the number of channels increases leading to larger circuit area and higher cost
Solution Approach 1:
The patent combines control signal transmission with existing data channels by embedding control signals within data signal sequences. Specifically, control signals are transmitted by manipulating data signal levels (e.g., using specific voltage levels or patterns in the data channels) so that the same physical channel carries both data and control information, eliminating the need for separate control channels and reducing circuit area
Solution Approach 2:
The data channels are designed to serve dual purposes: transmitting display data during normal operation and transmitting control signals when needed. The system enables the data channels to perform multiple functions by implementing control signal embedding mechanisms, making the channels universal rather than dedicated to single functions, thereby reducing the total number of channels required
2Adaptability or versatility
If many channels are used for communication between timing controller and source drivers, then complete signal transmission capability is maintained, but the number of connecting wires increases occupying large circuit area
Solution Approach 1:
Multiple functions (data transmission and control signal transmission) are merged into a single channel by embedding control information within the data signal structure. This reduces the number of physical channels needed while maintaining complete signal transmission capability through intelligent signal encoding
Solution Approach 2:
The system changes the parameters of existing data channels to enable control signal transmission. By modifying how signals are encoded or interpreted on the data channels (e.g., using specific voltage levels, timing patterns, or data patterns to represent control commands), the channels can convey additional information without requiring separate physical pathways
Data Source
AI summary
A method of handling signal transmission applicable to a display system includes a plurality of steps. The steps include transmitting a reset signal embedded in a first data signal to each of at least one source driver via a first data channel, generating a first control signal for setting the at least one source driver, and transmitting the first control signal embedded in a second data signal to each of the at least one source driver via a second data channel when the reset signal is transmitted via the first data channel.