De-rotation adaptor and method for enabling interface of handheld multi-media device with external display
AssigneeSTMicroelectronics S.r.l.
InventorOsamu Kobayashi
Life of this patent
Estimating the term…
Abstract
Methods, systems and circuit elements that enable improved interface between a source electronic devices that generate rotatable image frames and an external sink device. In particular, aspects of the invention enable image de-rotation and/or improved speed in horizontal and V-scaling of image data supplied to an external sink device.
Claims31
A method of conforming a source image frame for rendering by an external sink device, the method comprising the operations of;
- receiving a source image frame;
- determining whether the source image frame is to be modified to enable compatibility with an external sink device;
- generating an output image frame by performing at least one of scaling or de-rotating the source image frame or maintaining the source image frame in an original format;
- and
- transmitting the output image frame to an external sink device.
An integrated circuit (IC) system for receiving image data from a source device that supports image frame rotation and enables selective de-rotation of source image frames such that they can be output to and rendered in a de-rotated form by an external sink device, the IC system comprising:
- a sub-frame processing module enabling storage of portions of input source image frames as image sub-frames and enabling the output of the sub-frames;
- a full frame memory module enabling the receipt and accumulation of the image sub-frames to generate a full image frame for output;
- and
- a control system configured to control the operation of the IC system.
A method of adapting image data received from a source device that supports image frame rotation and selectively de-rotating source image frames such that they can be rendered in a de-rotated form by an external sink device, the method comprising;
- determining whether a source image frame received from a source device comprises a rotated image frame;
- where the source image comprises a rotated image frame, de-rotating the frame to generate a de-rotated image frame;
- and
- transmitting the de-rotated image frame to an external display device.
Dependencies are inferred from the claim text.