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Method for displaying extra-large-resolution pictures on television

A technology for displaying pictures and TVs, applied to color TV parts, TV system parts, TVs, etc., can solve the problems of space consumption, small memory capacity, and inability to support, and achieve the effect of speeding up decoding and zooming

Active Publication Date: 2011-07-13
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The picture browsing function of the TV is used for home use. One of the important purposes is to browse photos, but there is a contradiction: on the one hand, embedded products such as TVs often have a relatively small memory capacity; The resolution of many ordinary digital cameras has reached more than 10 million pixels, and the photos taken by them need a lot of memory space after being decoded according to the conventional strategy: taking 10 million pixels as an example, a decoded picture consumes 3byte×10 million , which is as much as 28.6 megabytes, which is unacceptable in an embedded system such as a television with limited memory space, which cannot even support photos taken by cameras with larger pixels

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  • Method for displaying extra-large-resolution pictures on television
  • Method for displaying extra-large-resolution pictures on television

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Embodiment Construction

[0039] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0040] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0041] For ease of description, let pw (picture width) and ph (picture height) be the width and height of the original picture, uw (UI width) and uh (UI height) be the width and height of the TV UI, sw (scaled width), sh(scaled height) is the width and height of the scaled image, rw, rh are the scaling ratio (ration).

[0042] Take a 15-megapixel 4752×3168 JPEG image scaled and displayed on a 1920×1080 TV full-screen UI as an example, and the image format is 4:2:0:

[0043]...

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Abstract

The invention discloses a method for displaying extra-large-resolution pictures on a television, relates to a multimedia function of a television, and aims to provide a method for displaying extra-large-resolution pictures on a television with a limited memory. The method comprises the following steps: a. setting a maximum available memory threshold M when a picture is browsed according to the memory situation of the television; b, acquiring the format, width and height of a picture from picture information; and c, comparing the pixel per inch of the picture with the pixel per inch of a full screen UI (user interface), if the pixel per inch of the picture is less than or equal to the pixel per inch of the full screen UI, displaying the picture based on a conventional method, and if the pixel per inch of the picture is greater than the pixel per inch of the full screen UI, scaling the picture, and then displaying the picture. The method disclosed by the invention is mainly used for displaying pictures on the television, and ensures that the pictures can be scaled without completely decoding the pictures, thereby effectively saving the times for decoding and scaling the pictures.

Description

technical field [0001] The invention relates to the multimedia function of the television, in particular to the browsing technology of large-resolution pictures. Background technique [0002] Explanation of technical terms in the text: [0003] Resolution: Refers to the number of pixels that a monitor or picture can display. [0004] Width = number of pixels in the horizontal direction; [0005] height = number of pixels in vertical direction. [0006] Modern TV sets generally have audio and video playback functions and picture browsing functions. The conventional picture browsing strategy is to decode all pictures into the memory, and then decode the decoded pictures according to the size of the graphical interface (hereinafter referred to as: UI) of the TV terminal. The picture is scaled and drawn so that the TV completes the full screen display of the picture. The picture browsing function of the TV is used for home use. One of the important purposes is to browse ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/445H04N1/64H04N1/41
Inventor 周建波李足红毕端
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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