HDMI Receiver Adjustment Data Encoding for HDTV Maintenance
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Solution Overview
Problem
High Definition Television (HDTV) maintenance and adjustment processes require unpacking internal electronics, leading to increased costs and errors, as existing solutions either necessitate additional hardware or do not fully address the unpacking issue.
Innovation Solution
Incorporating an HDMI receiver and microcomputer in HDTVs that allow adjustment data to be encoded in INFO frames of the TMDS system, enabling external devices to input and process adjustment data without unpacking the TV, allowing the microcomputer to control adjustments and display video data directly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adjustment data is transmitted through existing video input terminals using INFO frames of the TMDS system, then additional adjusting equipment is eliminated and cost is reduced, but the complexity of data encoding and transmission within existing protocols increases
Solution Approach 1:
The video input terminal is designed to serve dual purposes: traditional video signal input and adjustment data transmission. By utilizing the existing HDMI interface and its INFO frame structure, the system eliminates the need for separate adjusting equipment while reducing overall cost. The microcomputer processes both video signals and adjustment commands through the same interface, achieving multi-functionality without adding hardware.
Solution Approach 2:
The INFO frame of the TMDS system acts as an intermediary carrier for adjustment data. Instead of requiring dedicated adjustment hardware, the patent embeds adjustment information within the existing video transmission protocol structure. The microcomputer extracts and processes this embedded data, allowing seamless integration of adjustment functionality through the video interface without increasing hardware complexity.
2Ease of repair
If the HDTV set is unpacked for maintenance and adjustment work, then direct access to internal electronics is enabled, but the risk of errors increases and additional time is required for setup and teardown
Solution Approach 1:
The HDTV system performs self-adjustment through the microcomputer that automatically processes adjustment data received via the video input terminal. The microcomputer reads the embedded adjustment information and autonomously configures internal settings without requiring external intervention or physical access to internal electronics. This self-service capability eliminates unpacking time and reduces error risks associated with manual handling.
Solution Approach 2:
The patent replaces the mechanical process of unpacking and physically accessing internal electronics with an electronic data transmission method. Adjustment parameters are transmitted digitally through the video interface and processed by the microcomputer, substituting physical manipulation with electronic configuration. This eliminates the need to open the case while achieving the same adjustment objectives.
3Device complexity
If adjustment data is embedded in INFO frames of the TMDS system, then existing video input terminals can be used without additional equipment, but the precision of data transmission within the protocol constraints becomes challenging
Solution Approach 1:
The patent utilizes the existing INFO frame structure of the TMDS protocol to embed adjustment data by modifying parameters within the established protocol constraints. The microcomputer is configured to recognize and extract specific data patterns from the INFO frames, ensuring accurate interpretation of adjustment parameters despite the limited bandwidth and structured format of the existing video transmission protocol.
Data Source
AI summary
The present invention discloses an HDTV, and a method for controlling adjustment of the HDTV, which make it possible to set control information of the HDTV easily at low cost without unpacking the TV set. Adjustment data is included in an INFO frame, transmitted from an external device, and written into a register of an HDMI receiver 14 through a video signal input terminal 13. Further, a microcomputer 15 reads the adjustment data and controls the adjustment of the HDTV 11 based on contents of the data.