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Digital Zoom with Image Enhancement

IP.com Disclosure Number: IPCOM000022190D
Publication Date: 2004-Mar-01
Document File: 1 page(s) / 23K

Publishing Venue

The IP.com Prior Art Database

Related People

Robert L. Hardacker: INVENTOR [+3]

Abstract

Digital zoom loses resolution in its grossest implementation. By implementing DRC-like technology resolution can be artificially enhanced to preserve the original resolution while zooming.

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         Sony Corporation

         Sony Electronics Inc.

         IPD Case #50R4816

Title:

Digital Zoom with Image Enhancement

Abstract:

Digital zoom loses resolution in its grossest implementation. By implementing DRC-like technology resolution can be artificially enhanced to preserve the original resolution while zooming.

Inventors:

Robert L. Hardacker

Thomas Dawson

Chris Read

Description of the Invention:

1.      Zooming is a well-understood capability in the digital domain. In lieu of optical zooming, which is costly, digital zooming is an extremely low cost method of providing this feature, typically used in still digital cameras. The primary problem associated with this feature is the loss of resolution as the image is zoomed in upon.

2.      Sony digital TVs have been implementing DRC (digital reality creation) as a low cost method of enhancing and extending standard resolution into a pseudo high definition resolution. By combining digital zoom with a DRC-like image enhancement, the loss of resolution normally experienced with digital zoom is overcome. This is an enjoyment-enhancing feature. The implementation is intended to be modular to allow new resolution enhancing technologies to be used as they become available. It will also handle both step-wise (1 x, 2x, 3x, etc.) and continuous zooming.

DRC also incorporates an interlaced to progressive conversion. This helps bring detail from a prior frame into the current frame, which is important for accurate zooming. Since much of HDTV content is expected to...