Image processing apparatus and processing method thereof

• US 7,889,934 B2
• Filed: 11/14/2005
• Issued: 02/15/2011
• Est. Priority Date: 11/14/2005
• Status: Active Grant

• Current Assignee: Xueshan Technologies Inc. (Wi-LAN Inc.)
• Original Assignee: MediaTek, Inc.
• Inventors: Yang, Shun-Pin
• Primary Examiner(s): CHANG, JON CARLTON
• Application Number:
  US11/272,963
• Publication Number:
  US 20070110323A1
• Time in Patent Office: 1,919 Days
• Field of Search: 382/232, 382/236, 375/240.01, 375/240.12, 348/384.1, 348/409.1
• US Class Current: 382/232
• CPC Class Codes: H04N 19/12 Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
• CPC Class Codes: H04N 19/423 characterised by memory arrangements H04N19/433 takes precedence
• CPC Class Codes: H04N 19/60 using transform coding
• CPC Class Codes: H04N 19/61 in combination with predictive coding

Abstract

An image processing apparatus and method are provided. The apparatus comprises an image input device, an external memory, and an encoder. The image input device captures pictures, and the external memory stores the captured pictures. The encoder further comprises a moving picture compression unit, a still picture compression unit, and a recording unit. The moving picture compression unit and the still picture compression unit share the external memory and work simultaneously when at least one of the captured pictures is to be stored in both video and still image format. The recording unit records the compressed pictures.

Claims

1. An image processing apparatus, comprising:

an image input device, capturing pictures;

an external memory, coupled to the image input device, storing the pictures;

an encoder, compressing the pictures retrieved from the external memory, further comprising;

a moving picture compression unit, capable of compressing the pictures into compressed moving pictures;

a still picture compression unit, capable of compressing the pictures into compressed still pictures; and

a recording unit, coupled to the moving picture compression unit and the still picture compression unit, recording the compressed pictures;

a first image signal processor coupled to the image input device and the external memory, applying signal processing to pictures before compression;

a buffer coupled to the external memory, storing data required for the moving and still picture compression units during compression; and

a second image signal processor coupled to the buffer and the still picture compression unit, applying special photo effects to the data retrieved from the buffer;

wherein, when the pictures captured by the image input device require both moving and still picture compression, the encoder compresses the pictures simultaneously, and

wherein the first image signal processor applies signal processing for both compressed moving and still pictures, and the second image signal processor applies signal processing for only the compressed still pictures.

2. The image processing apparatus as claimed in claim 1, wherein the first image signal processor performs at least one of scaling, noise reduction, red eye reduction, color transformation, and white balance, sharpness signal processing.

3. The image processing apparatus as claimed in claim 1, wherein the external memory stores one or multiple picture frames.

4. The image processing apparatus as claimed in claim 1, wherein the moving picture compression unit is an MPEG compression unit.

5. The image processing apparatus as claimed in claim 1, wherein the said still picture compression unit is a JPEG compression unit.

6. The image processing apparatus as claimed in claim 1, wherein the recording unit records the compressed pictures to a hard disk, an external plugged memory card, DVD, or other types of optical discs.