Camera output format for real time viewfinder/video image
AssigneeNokia Corporation
InventorOssi Kalevo
Life of this patent
Estimating the term…
Abstract
This invention describes horizontal and vertical downscaling of the real-time video image using a camera sensor and a processing block (a base band engine in camera-phone mobile devices) for a real-time viewfinder display and/or video imaging. Horizontal downscaling is performed by the camera sensor and vertical downscaling is performed by the processing block. The invented image format enables the reduction of memory, processing power and bus capability, when the smaller resolution output image is needed to process from the higher resolution input image.
Claims20
A method for generating a real-time vertically and horizontally downscaled video signal (20) of a video image (11) by an image generating and processing block (12), comprising the steps of:
- generating (30) a real-time video signal of the video image (11) by a camera sensor (14) of the image generating and processing block (12),
- generating (32) a real-time horizontally downscaled video signal (18) using horizontal downscaling of the real-time video signal by the camera sensor (14), and
- generating (38) the real-time vertically and horizontally downscaled video signal (20) using vertical downscaling of the real-time horizontally downscaled video signal (18) by a processing block (16) of the image generating and processing block (12).
An image generating and processing block (12), comprising:
- a camera sensor (14), responsive to a video image (11), for generating a real-time video signal of the video image (11) and for further generating a real-time horizontally downscaled video signal (18) using horizontal downscaling of the real-time video signal by the camera sensor (14);
- and
- a processing block (16), responsive to the real-time horizontally downscaled video signal (18), for generating a real-time vertically and horizontally downscaled video signal (20) using vertical downscaling of the real-time horizontally downscaled video signal (18).
A camera-phone mobile device (10), comprising:
- an image generating and processing block (12) for generating a real-time vertically and horizontally downscaled video signal (20) of a video image (11), and for encoding said real-time vertically and horizontally downscaled video signal (20) thus generating an encoded video signal (27);
- and
- a real-time viewfinder display (22), responsive to the real-time vertically and horizontally downscaled video signal (20), for providing a display of the video image (11) indicative by said real-time vertically and horizontally downscaled video signal (20).
Dependencies are inferred from the claim text.