Imaging module, interface, and method handling multiple simultaneous data types
A method is provided for transmitting image data in a plurality of formats simultaneously over a data path. Successive data blocks, each comprising compressed image data representing a block of pixels of a first image are transmitted over a data path. During intervals between transmission of the successive data blocks, image data representing at least a portion of a second image is transmitted along the data path. An imaging module and imaging device capable of transmitting high resolution compressed data and lo resolution uncompressed data simultaneously over a data path are also provided.
1. An imaging device comprising:
an imaging module;
a data path; and
a graphics controller, the imaging device being operable in at least a preview mode and an image capture mode, wherein in the preview mode, the imaging module transmits successive preview images in an uncompressed format along the data path to the graphics controller, and in the image capture mode, the imaging module performs a block-based image compression on a capture image, and transmits along the data path successive data blocks, each data block containing compressed data representing a block of pixels from the capture image, the imaging module transmitting along the data path at least a portion of one of the preview images during intervals of time between the successive blocks.
2. The imaging device of claim 1 wherein the graphics controller stores the capture image in memory.
3. The imaging device of claim 1 further comprising a display, the graphics controller passing preview images to the display in real time.
4. The imaging device of claim 1 wherein each preview image is a low resolution image and, in the image capture mode, the preview image is transmitted in its entirety during one of the intervals.
5. The imaging device of claim 1 wherein the image device is a hand held battery operated device.
6. The imaging device of claim 5 wherein the image device is one of a cell phone or personal digital assistant.