Digital Image Processing Noise Control During Optical Zoom

Solution Overview

Problem

Conventional digital image processing apparatuses face challenges in recording motion images with optical zoom functionality without compromising image resolution, as noise from the motor zooming the zoom lens is recorded along with the motion images, making it difficult to apply optical zoom in devices with electronic zoom functions.

Innovation Solution

A control method that allows for optical zoom operations without recording noise by temporarily stopping and resuming the storage of motion image data using specific button inputs, enabling the capture of motion images with various angles of view while preventing noise recording.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If optical zoom function is added to digital image processing apparatus, then image resolution is improved, but noise from motor zooming is recorded together with motion images

Engineering Contradiction:

Improveimage resolutionVSAvoidnoise from motor zooming

Core Design Contradiction:

Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The control unit temporarily stops recording motion image data before the optical zoom operation starts. This preliminary action prevents the motor noise from being recorded in the motion image file, while still allowing the optical zoom function to be used to improve image resolution.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system skips the recording of motion image data during the optical zoom operation. By rushing through the zoom process without recording, the noise is excluded from the final motion image file, maintaining high resolution while eliminating the harmful noise.

Inventive Principle:

Principle #21Skipping (Rushing through)

2Manufacturing precision

If optical zoom operation is performed during motion image recording, then image resolution is improved, but noise is recorded together with motion images

Engineering Contradiction:

Improveimage resolutionVSAvoidnoise in recorded motion images

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The control unit temporarily stops recording motion image data before the optical zoom operation starts. This preliminary action prevents the motor noise from being recorded in the motion image file, while still allowing the optical zoom function to be used to improve image resolution.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control unit acts as an intermediary between the optical zoom operation and the recording process. It mediates by temporarily stopping the recording during the zoom operation, allowing the zoom to occur without contaminating the recorded motion images with motor noise.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If motion image data storage is continued during optical zoom, then continuous recording is maintained, but noise is recorded together with motion images

Engineering Contradiction:

Improvecontinuous recordingVSAvoidnoise from motor zooming

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The control unit temporarily stops recording motion image data before the optical zoom operation starts. This preliminary action prevents the motor noise from being recorded in the motion image file, while still allowing the optical zoom function to be used to improve image resolution.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The recording operation is performed periodically, with temporary interruptions during optical zoom operations. The control unit alternates between recording and stopping recording based on the operational mode, allowing continuous recording during normal operation and preventing noise during zoom operations.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS7616236B2Control method used by digital image processing apparatus

Publication Date: 2009.11.10 SAMSUNG ELECTRONICS CO LTD

AI summary

Provided is a control method used by a digital image processing apparatus, and more particularly, to a control method used by a digital image processing apparatus that records motion image data in a recording medium in a motion image photographing mode. The method includes (a) creating a motion image file in the recording medium and storing the motion image data in the motion image file in response to a first signal generated when a user presses a first button on the digital image processing apparatus; (b) temporarily stopping storing the motion image data in response to the first signal generated when the user presses a second button on the digital image processing apparatus; (c) zooming a zoom lens in response to a predetermined signal generated when the user presses a button for changing an angle of view; (d) continuing to store the motion image data input to the changed zooming position in the motion image file in response to a second signal generated when the user presses the second button; and (e) terminating storing of the motion image data and completing the motion image file in response to the second signal generated when the user presses the first button.