US 6,473,123 B1Granted

Method and system for organizing DMA transfers to support image rotation

AssigneeFlash Point Technology, Inc.

InventorEric C. Anderson

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Abstract

A method and system for providing data transfers which support image rotation is disclosed. In one aspect, the method and system include determining the orientation of the image capture device and transferring the data from a memory in an order. The order depends on the orientation of the image capture device. In a second aspect, the method and system include determining the orientation of the image capture device and defining an image area of the image sensor based on the orientation of the image capture device. In a third aspect, the method and system include transferring data in a plurality of computational units and processing each computational unit of the plurality of computational units of data. At least a portion of a computational unit is processed while at least a portion of a subsequent computational unit is transferred.

Claims11

Dependent claims

A method for transferring data from an image sensor and supporting rotation of an image in an image capture device, the image sensor having a particular configuration of elements, wherein the image sensor has a left edge, and a top;

wherein the particular configuration of elements further includes a plurality of light sensors arranged in an array, the array having a plurality of rows and a plurality of columns, each row and each column further including a portion of the plurality of light sensors, the method comprising the steps of:
(a) determining the orientation of the image capture device;
and
(b) defining an image area of the image sensor based on the orientation of the image capture device to ensure that a particular portion of the particular configuration of elements occurs at a corresponding portion of the image irrespective of the orientation of the image capture device, wherein image area defining step (b) further comprises the step of
(b1) defining a first image area if the image capture device is in a landscape orientation;
(b2) defining a second image area offset from the first image area by one column toward the left edge if the image capture device is in a right rotation portrait orientation;
and
(b3) defining a third image area offset from the first image area by one column up if the image capture device is in a left rotation portrait orientation.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/916,186Filed 21 Aug 1997
Granted: 29 Oct 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06T 3/606
Rotation of whole images or parts thereof: by memory addressing or mapping
H04N 5/772
Between a recording apparatus and a television camera: the recording apparatus and the television camera being placed in the same enclosure
H04N 23/843
For processing colour signals: demosaicing, e.g. interpolating colour pixel values
H04N 25/134
Characterised by the spectral characteristics of the filter elements: based on three different wavelength filter elements