Caption Menu Display Adapting to EIA 608 and 708 Formats

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Solution Overview

Problem

Conventional digital caption service systems fail to distinguish between EIA 708 and EIA 608 caption services, leading to user confusion when selecting the appropriate caption service menu.

Innovation Solution

A caption display apparatus and method that analyze the data format in the user data region of a Moving Picture Experts Group (MPEG) picture of a digital stream to determine the caption delivery system, allowing for the display of specific caption service menus for EIA 708 and EIA 608 systems, and enabling selection between them when both are present.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a digital caption service system displays a unified EIA 708 caption service menu for all input types, then the system structure remains simple, but user confusion increases and the system cannot correctly indicate which caption service is provided

Engineering Contradiction:

Improveuser convenience in selecting caption serviceVSAvoidsystem complexity in detecting and displaying different caption menus

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system changes the display parameter (caption service menu) based on the detected caption data format (EIA 708 or EIA 608). When EIA 708 caption data is detected, the EIA 708 service menu is displayed; when EIA 608 caption data is detected, the EIA 608 service menu is displayed. This parameter change resolves the contradiction by adapting the menu display to the actual caption type, improving user convenience while maintaining manageable system complexity through automated detection.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The caption service system automatically detects the caption data format from the input signal and autonomously selects which service menu to display, without requiring manual user configuration. The system self-determines whether to display EIA 708 or EIA 608 menu based on the detected caption type, reducing user confusion while the detection mechanism remains integrated within the existing system architecture.

Inventive Principle:

Principle #25Self-service

2Loss of information

If the system displays EIA 708 caption service menu regardless of input caption type, then the menu display logic remains simple, but the user cannot correctly learn which caption service is provided

Engineering Contradiction:

Improveinformation accuracy about caption service typeVSAvoidcomplexity of detecting and differentiating caption formats

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The system incorporates feedback by detecting the actual caption data format from the input signal and using this information to determine which service menu to display. The detection result feeds back into the menu selection logic, ensuring that the displayed menu accurately reflects the provided caption service type. This feedback mechanism resolves the contradiction by ensuring information accuracy while the detection process remains integrated within the existing processing pipeline.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system replaces manual user identification of caption types with automated digital detection mechanisms. Instead of requiring users to manually determine or configure caption service information, the system uses automatic detection of caption data formats (EIA 708 or EIA 608) to determine menu display, improving information accuracy while the detection complexity is managed through standard digital signal processing techniques.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If the system supports multiple caption delivery systems (EIA 708 and EIA 608), then the system becomes more versatile, but the menu display becomes confusing when both are input

Engineering Contradiction:

Improvecapability to handle different caption delivery systemsVSAvoiduser convenience when multiple caption services are available

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system changes the menu display parameter based on the detected caption data format. When EIA 708 caption data is detected, the EIA 708 service menu is displayed; when EIA 608 caption data is detected, the EIA 608 service menu is displayed. This parameter change resolves the contradiction by adapting the menu display to the actual caption type, improving user convenience while maintaining manageable system complexity through automated detection.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The menu display becomes dynamic rather than static, automatically adapting to the detected caption format. The system dynamically selects which service menu to display based on real-time detection of EIA 708 or EIA 608 caption data, ensuring the menu always corresponds to the currently input caption type. This dynamic behavior resolves the contradiction by maintaining versatility while improving user convenience through automatic adaptation.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS7692722B2Caption service menu display apparatus and method

Publication Date: 2010.04.06 SAMSUNG ELECTRONICS CO LTD

AI summary

A caption service menu display apparatus and method. When a different caption delivery system is adopted for a digital stream, the caption menu is classified into an EIA 608 menu and an EIA 708 menu. Regardless of the caption transmission medium, the caption service menu is displayed based on the caption delivery system of the actual stream.