Video Signal Processing Apparatus Recording Format Override

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Solution Overview

Problem

User-activated display functions in video apparatuses can adversely affect video recording by altering the output signal format, leading to cropped or undesirable recordings, especially when functions like video sizing, program guide, or picture-in-picture are activated during recording.

Innovation Solution

A video signal processing apparatus and method that detects the activation of a recording function and automatically overrides user-activated display functions to provide the output signal in a predetermined format suitable for recording, ensuring that the recording is performed in a desired format by switching to a default or original format when the recording function is initiated.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If user-activated display functions (video sizing, zoom, PIP) are activated during video recording, then the user can enhance their viewing experience with altered picture sizes and formats, but the output signal format is adversely affected causing cropped or incomplete recordings

Engineering Contradiction:
Improveuser viewing experienceVSAvoidrecording format accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The system applies preliminary anti-action by detecting when a recording function is activated and proactively overriding any user-activated display functions before they can adversely affect the recording. This preemptive measure ensures the output signal maintains the original video format during recording, preventing cropping or format alterations while preserving user viewing preferences for non-recording periods

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The system dynamically adjusts the output signal format based on the operational state. When recording is detected, the system automatically switches to provide the output signal in the original video format, overriding any display function settings. When recording is not active, the system allows user-selected display functions to remain active, providing flexibility for viewing while ensuring recording integrity when needed

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the system provides multiple user-activated display functions for enhancing viewing experience, then user flexibility and viewing quality are improved, but device complexity increases

Engineering Contradiction:
Improvedisplay function versatilityVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system performs preliminary action by detecting the activation of recording functions in advance and automatically overriding display functions before they can interfere with recording. This automated preliminary detection and override mechanism eliminates the need for complex manual control logic, reducing device complexity while preserving multiple display function capabilities for non-recording periods

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system achieves universality by designing the output terminal to serve multiple purposes: it can provide signals in original format for recording operations and in user-selected altered formats for viewing operations. This multi-functional capability allows a single system to handle both recording and viewing requirements without requiring separate dedicated circuits for each function, thereby managing device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS7945930B2Method and apparatus for controlling a video signal processing apparatus
Publication Date: 2011.05.17 INTERDIGITAL MADISON PATENT HLDG
  • US7945930B2 patent drawing
  • US7945930B2 patent drawing
  • US7945930B2 patent drawing

AI summary

A method for controlling a recording function of a video apparatus improves recording quality by preventing certain display functions of the apparatus from adversely affecting the resultant recording. A problem may arise in certain video signal processing apparatuses when the user selects a recording function after selecting a particular user-activated display function because the user-activated display function may result in the recording of the video signal in an undesired format, for example a different aspect ratio, or zoom mode. According to an exemplary embodiment, the present invention overcomes this problem by providing a method that includes the steps of detecting activation of a recording function of a video apparatus, and turning off a user-activated display function of the video apparatus responsive to the detection.