Method for saving a specific image in a video codec

• US 20050025366A1
• Filed: 07/27/2004
• Published: 02/03/2005
• Est. Priority Date: 07/28/2003
• Status: Abandoned Application

• Current Assignee: CS Technology
• Original Assignee: CS Technology
• Inventors: Jeong, Kyung Ah
• Application Number:
  US10/899,763
• Publication Number:
  US 20050025366A1
• Time in Patent Office: Days
• US Class Current: 382/232
• CPC Class Codes: H04N 19/423 characterised by memory arrangements H04N19/433 takes precedence
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109

Abstract

A specific image is saved in accordance with a video CODEC operated by the multi-frame structure. The method copies and saves a specific image in the process of compressing or decompressing the image of a videophone or a multimedia terminal. Each process utilizes first and second memory spaces of size commensurate with the size of images, and uses alternately two memory spaces as the area for a current image being coded or decoded and the area for a previous image. When the copy request of a specific image is issued during decompressing or compressing of the arbitrary (n)^th frame, the image desired to be copied, corresponding to the previous image in the compressing or decompressing process of the (n+1)^th frame, is treated as the image saved in said 1^st memory space, thereupon the compressing or decompressing process of the (n+2)^th frame is processed with respect to the 3^rd memory space.

Claims

1. In a method for saving a specific image in a video CODEC operated by the multi-frame structure, more particularly, in a method for copying and saving a specific image during the compressing or decompressing process, which utilizes a first and a second memory space assigned as much as the size of images, and uses alternately two memory spaces as the area for a current image being coded or decoded and the area for a previous image, wherein said method for saving a specific image in a video CODEC is characterized in that:

when the copy request of a specific image is issued during decompressing or compressing of the arbitrary (n)^th frame, the image desired to copy, which is corresponded to the previous image in the compressing or decompressing process of the (n+1)^th frame, is treated as the image saved in said 1^st memory space, thereupon the compressing or decompressing process of the (n+2)^th frame is processed with respect to the 3^rd memory space.

2. A method for saving a specific image in a video CODEC according to claim 1, wherein said image is one among an image coded, an image decoded, and an image captured by CCD.

3. A method for saving a specific image in a video CODEC according to claim 1, wherein said the compressing process utilizes at least three frames for saving said image.

4. A method for saving a specific image in a video CODEC according to claim. 1, wherein said the decompressing process utilizes at least three frames for saving said image.

5. A method for saving a specific image in a video CODEC according to claim 1, wherein capturing the CCD image utilizes at least three frames for saving said image.

6. A method for saving a specific image in a video CODEC according to claim 1, the storage space for saving the image decoded is changed to an arbitrary memory space, and a specific image desired to copy is saved in the previous memory in (n+1)^th frame.

7. A method for saving a specific image in a video CODEC according to claim 1, the storage space for saving the image coded or captured by CCD is changed to an arbitrary memory space, and a specific image desired to copy is saved in the previous memory in (n+1)^th frame.