Back to results
US 2010/0073345 A1Published application
Image-processing circuit, related system and related method capable of reducing power consumption
AssigneeEtron Technology, Inc.
InventorsMing-Sung Huang, Wen-Min Lu
Life of this patent
Estimating the term…
Abstract
An image processing circuit turns off the writing unit of the controller of the DRAM when the previous frame is identical to the current frame. In this way, the writing unit of the controller of the DRAM does not write the current frame into the DRAM, thereby reducing power consumption.
Claims26
An image-processing circuit capable of reducing power consumption, comprising:
- a frame input end for receiving frames;
- a frame output end for outputting frames after being processed by the image-processing circuit;
- a memory controller, comprising:
- a writing unit, comprising:
- an input end coupled to the frame input end for receiving frames;
- a control end for receiving a control signal;
- and
- an output end coupled to a first memory, wherein the writing unit stores the frames received from the input end of the writing unit into the first memory via the output end of the writing unit based on the control signal;
- and
- a reading unit, comprising:
- an input end coupled to the first memory for accessing frames stored in the first memory;
- an output end for outputting the accessed frames;
- and
- a comparator, comprising:
- a first input end coupled the output end of the reading unit for receiving frames outputted from the reading unit;
- a second input end coupled the frame input end for receiving frames;
- and
- an output end coupled to the writing unit for outputting the control signal when a frame received from the first input end of the comparator is identical to a frame received from the second input end of the comparator.
15 more elements
An image-processing system capable of reducing power consumption, comprising:
- a first memory for storing frames;
- an image-processing circuit comprising
- a frame input end for receiving frames;
- a frame output end for outputting frames after being processed by the image-processing circuit;
- a memory controller, comprising:
- a writing unit, comprising:
- an input end coupled to the frame input end for receiving frames;
- a control end for receiving a control signal;
- and
- an output end coupled to the first memory, wherein the writing unit stores the frames received from the input end of the writing unit into the first memory via the output end of the writing unit based on the control signal;
- and
- a reading unit, comprising:
- an input end coupled to the first memory for accessing frames stored in the first memory;
- an output end for outputting the accessed frames;
- and
- a comparator, comprising:
- a first input end coupled the output end of the reading unit for receiving frames outputted from the reading unit;
- a second input end coupled the frame input end for receiving frames;
- and
- an output end coupled to the writing unit for outputting the control signal when a frame received from the first input end of the comparator is identical to a frame received from the second input end of the comparator.
17 more elements
An image-processing method capable of reducing power consumption, comprising:
- comparing a first frame with a second frame;
- and
- storing the second frame into a first memory based on a result of comparing the first and second frames.
Dependencies are inferred from the claim text.