Digital camera image controller apparatus for a mobile phone

• US 20040263663A1
• Filed: 03/30/2004
• Published: 12/30/2004
• Est. Priority Date: 06/25/2003
• Status: Abandoned Application

• Current Assignee: Sunplus Technology Co., Ltd
• Original Assignee: Sunplus Technology Co., Ltd
• Inventors: Hsu, Chih-Kai, Lee, Charng-Long
• Application Number:
  US10/811,861
• Publication Number:
  US 20040263663A1
• Time in Patent Office: Days
• US Class Current: 348/333.11
• CPC Class Codes: H04N 23/843 Demosaicing, e.g. interpolating colour pixel values
• CPC Class Codes: H04N 25/611 Correction of chromatic aberration

Abstract

A digital camera image controller apparatus for a mobile phone is disclosed, which uses a sensing module to collect optical signal of an image and produce RGB (red, green, blue) image signal from the optical signal, and an image controller to receive the RGB image signal and accordingly produce a preview signal of the image to an LCD module. Also, the image controller outputs compressed or non-compressed image signal to a baseband processor. In addition, the image controller includes chromatic aberration interpolator and an RGB-to-YUV converter provided by a typical camera module. Therefore, the inventive camera module can include a sensing module simply having lens and sensor, thus avoiding defects caused by using the typical camera module.

Claims

1. A digital camera image controller apparatus for a mobile phone, comprising:

an LCD module, as a display means of the mobile phone, to display information for communication;

a baseband processor, connected to circuit of the mobile phone in order to perform required communication processing;

a sensing module, to sense optical signal of an external image and accordingly produce an RGB image signal; and

an image controller, having;

a color interpolation device, to interpolate color for each pixel of the RGB image signal produced by the sensing module and thus obtain an interpolated RGB image signal with complete color information;

an RGB-to-YUV converter, to convert the interpolated RGB image signal into a YUV image signal;

a YUV-to-RGB converter, to convert the YUV image signal into the interpolated RGB image signal;

a compression engine, to compress or decompress the YUV image signal in order to produce a compressed or decompressed YUV image signal; and

a buffer, to temporarily store the interpolated RGB image signal and the compressed YUV image signal,

wherein the interpolated RGB image signal in the buffer is able to directly display on the LCD module, the compressed YUV image signal in the buffer is sent to the baseband processor for further processing or to the compression engine for decompression and subsequently the YUV-to-RGB converter converts the decompressed YUV image signal into the interpolated RGB image signal for displaying on the LCD module.

2. The apparatus as claimed in claim 1, wherein the sensing module includes a lens and a sensor respectively to collect optical signal of the external image and sense the optical signal for producing the RGB image signal.

3. The apparatus as claimed in claim 1, wherein the compression engine is a JEEG codec.

4. The apparatus as claimed in claim 1, further comprising a sensor interface connected to the sensing module.

5. The apparatus as claimed in claim 1, further comprising a display interface connected to the LCD module.

6. The apparatus as claimed in claim 1, further comprising a host interface connected to the baseband processor.

7. The apparatus as claimed in claim 1, wherein, in operating, both the interpolated RGB image signal and the compressed YUV image signal temporarily stored in the buffer come from the sensing module.

8. The apparatus as claimed in claim 1, wherein, in operating, both the interpolated RGB image signal and the compressed YUV image signal temporarily stored in the buffer come from the baseband processor.

9. The apparatus as claimed in claim 1, wherein, in operating, the baseband processor directly displays an image, which exists in the mobile phone, on the LCD module through the image controller, without activating the color interpolation device, RGB-to-YUV converter and compression engine of the image controller and the sensing module.

10. The apparatus as claimed in claim 1, wherein, the image controller further comprises a color correction device arranged in between the color interpolation device and RGB-to-YUV converter to correct nonlinear color response due the electronic sensor characteristics and different light sources.