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US 2017/0365033 A1Published application
Image processing device
AssigneeRenesas Electronics Corporation
InventorsToshiyuki KAYA, Katsushige Matsubara
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Abstract
An image processing device includes a decoded data memory, a format-converted data memory, a decoder which decodes compressed image data in units of blocks, writes the decoded data in the blocks into the decoded data memory, and receives a notification that writing of the decoded data has been completed, and a progress notifier which is notified of completion of writing of the decoded data by the decoder, and generates and outputs upon completion of the decoding of a block of data or the writing of a block of the decoded data, a progress signal per picture.
Claims19
An image processing device, comprising:
- a decoded data memory for storing decoded data obtained by decoding compressed image data, and outputting a writing notification indicating that writing of a decoded data in a certain block into the decoded data memory has been completed;
- a format-converted data memory for storing format-converted data obtained by performing format conversion on the decoded data;
- a decoder which decodes the compressed image data in units of blocks, and writes the decoded data in the blocks into the decoded data memory, and the decoder receives the writing notification from the decoded data memory and outputs the writing notification;
- a progress notifier which receives the writing notification from the decoder and generates and outputs a progress signal indicating a state of progress of decoding or a state of progress of writing into the decoded data memory which is being executed by the decoder based on the writing notification;
- and
- a format converter which, based on the progress signal, reads out the decoded data from the decoded data memory and performs the format conversion on the decoded data, and writes the format-converted data into the format converted data memory, the format converter being configured to acquire information indicating an address at which the decoded data which is readable from the decoded data memory is stored, from the progress signal sent from the progress notifier.
3 more elements
A processor for an image processing device which includes a first memory and a second memory, the processor comprising:
- a decoder which decodes compressed image data in units of blocks, and writes the decoded data in the blocks into the first memory;
- a progress notifier which generates and outputs a progress signal per picture, every time decoding of one-block data or writing of the decoded data performed by the decoder is completed, the progress signal indicating a state of progress of decoding or a state of progress of writing into the first memory which is being executed by the decoder;
- and
- a format converter which, based on the progress signal, reads out the decoded data from the first memory and performs format conversion on the decoded data, and writes the format-converted data into the second memory, the format converter being configured to acquire information indicating an address at which the decoded data which is readable from the first memory is stored, from the progress signal sent from the progress notifier,
- wherein the progress notifier outputs a number of the block of the decoded data whose decoding by the decoder has been completed to the format converter as the progress signal, and
- wherein the format converter acquires an address corresponding to the number of the block that the progress signal indicates in accordance with a correspondence relation between the number of the block and the address in the first memory,
- wherein the decoder receives a notification that writing of the decoded data in a certain block into the first memory has been completed, and thereafter notifies the progress notifier of completion of writing of the decoded data in the certain block.
4 more elements
An image processing device, comprising:
- a decoded data memory;
- a format-converted data memory;
- a decoder which:
- decodes compressed image data in units of blocks;
- writes the decoded data in the blocks into the decoded data memory;
- and
- receives a notification that writing of the decoded data has been completed;
- a progress notifier which is notified of completion of writing of the decoded data by the decoder, and generates and outputs upon completion of the decoding of a block of data or the writing of a block of the decoded data, a progress signal per picture which:
- indicates a state of progress of the decoding or the writing into the decoded data memory which;
- and
- comprises a number of the block of the decoded data;
- and
- a format converter which:
- acquires from the progress signal, the number of the block of the decoded data and an address of the block of the decoded data in the decoded data memory;
- based on the progress signal, reads out the decoded data from the decoded data memory and performs format conversion on the decoded data;
- and
- writes the format-converted data into the format-converted data memory.
14 more elements
Dependencies are inferred from the claim text.