DATA PROCESSING SYSTEM

• US 20090219446A1
• Filed: 10/27/2006
• Published: 09/03/2009
• Est. Priority Date: 11/01/2005
• Status: Active Grant

• Current Assignee: MaxLinear Communications, LLC (f/k/a Entropic Communications, LLC) (Maxlinear Incorporated)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Sethuraman, Ramanathan, Beric, Aleksandar
• Granted Patent: US 9,432,679 B2
• Time in Patent Office: Days
• US Class Current: 348/714
• CPC Class Codes: H04N 19/43 Hardware specially adapted for motion estimation or compensation
• CPC Class Codes: H04N 19/433 characterised by techniques for memory access
• CPC Class Codes: H04N 19/61 in combination with predictive coding

Abstract

A data processing system is provided for processing video data on a window basis. At least one memory unit (L1) is provided for fetching and storing video data from an image memory (IM) according to a first window (R) in a first scanning order. At least one second memory unit (L0) is provided for fetching and storing video data from the first memory unit (L1) according to a second window in a second scanning order (SO). Furthermore, at least one processing unit (PU) is provided for performing video processing on the video data of the second window as stored in the at least one second memory unit (L0) based on the second scanning order (SO). The second scanning order (SO) is a meandering scanning order being orthogonal to the first scanning order (SO1).

Claims

1. Data processing system for processing video data on a window basis, comprising:

at least one first memory unit for fetching and storing video data from an image memory according to a first window in a first scanning order,

at least one second memory unit for fetching and storing video data from the first memory unit according to a second window in a second scanning order,

at least one processing unit for performing a video processing on the video data of the second window stored in the at least one second memory unit based on the second scanning order, and

wherein the second scanning order is a meandering scanning order being orthogonal to the first scanning order.

2. Data processing system according to claim 1, comprising:

a controller unit for controlling the fetching and storing of video data of the at least one first and at least one second memory unit.

3. Data processing system according to claim 1, wherein

the second scanning order is performed by scanning in a direction of the second scanning order, taking one step in the direction of the first scanning order, then reverse to scanning in a direction orthogonal to the direction of the first scanning order, and by taking a step in the direction of the first scanning order.

4. Data processing system according to claim 1, wherein

the direction of the first scanning order is horizontally or vertically.

5. Data processing system according to claim 1, wherein

the at least one processing unit is adapted to change the first and/or second scanning order.

6. Data processing system according to claim 1, wherein

the fetching of video data from the image memory into the first memory unit is preformed by sliding in the direction of the first scanning order.

7. Method for processing video data on a window basis, comprising the steps of:

fetching and storing video data from an image memory in at least one first memory unit according to a first window in a first scanning order,

fetching and storing video data from the first memory unit in at least one second memory unit according to a second window based on a second scanning order;

performing a video processing on the video data of the second window stored in the at least one second memory unit based on the second scanning order, and

wherein the second scanning order is a meandering scanning order being orthogonal to the first scanning order.