Set-Top Box OSD Data Format Adaptation for Stereoscopic Displays
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Solution Overview
Problem
In image data transmission systems, it is challenging to properly display superimposed information on stereoscopic image data received in set-top boxes, as the format of the image data (side-by-side or top-and-bottom) is often unclear, leading to incorrect output forms of OSD display data and subsequent improper display on television receivers.
Innovation Solution
A control unit determines the dimensional display process and sets the output form of display data to correspond with the detected format, using display state notifications to ensure proper alignment and display of superimposed information on both two-dimensional and stereoscopic image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the set-top box transmits OSD display data in a fixed output form, then the device complexity is reduced, but the display accuracy deteriorates when image data format is unclear
Solution Approach 1:
The OSD display data generation unit dynamically changes the output form of OSD display data based on the detected image data format. When stereoscopic image data is detected, it switches to a format suitable for stereoscopic display; when two-dimensional image data is detected, it uses a format for two-dimensional display. This dynamic adaptation resolves the contradiction by making the system flexible rather than fixed.
Solution Approach 2:
The system changes the parameters of OSD display data (such as horizontal/vertical positioning, scaling factors) based on the detected image format. By adjusting these parameters according to whether the input is 2D or 3D stereoscopic data, the system maintains display accuracy without requiring multiple dedicated hardware paths.
2Manufacturing precision
If the set-top box detects image data format to adjust OSD output form, then the display accuracy is improved, but the device complexity increases
Solution Approach 1:
The format detection unit and OSD generation unit are designed to handle multiple image data formats (two-dimensional and stereoscopic) through a single integrated pathway. Rather than creating separate dedicated systems for each format, the same hardware components adapt their behavior based on the detected format, reducing overall device complexity while maintaining high display accuracy.
Solution Approach 2:
The system uses feedback from the format detection unit to control the OSD display data generation unit. The detected image data format serves as feedback that automatically triggers the appropriate output form selection, eliminating the need for manual configuration or complex control logic while ensuring accurate OSD alignment.
3Ease of operation
If the output form of OSD display data does not correspond to the image data format, then the ease of operation is maintained, but the reliability of display performance deteriorates
Solution Approach 1:
The set-top box automatically detects the image data format and self-adjusts the OSD display data output form without requiring user intervention. The system serves itself by using the format detection result to automatically configure the appropriate display parameters, maintaining ease of operation while ensuring reliable OSD display performance.
Data Source
AI summary
An apparatus may include a control unit to determine whether a display state notification indicating a dimensional display process exists. The control unit may set an output form of display data to be displayed on image data to an output form corresponding to a display state indicated by the display state notification.