VIDEO AUDIO PROCESSING DEVICE AND STANDBY AND RETURN METHOD THEREOF
First Claim
1. A video audio processing device for processing video and audio signals of digital television broadcasts, the device comprising:
- a signal processing block including an instruction memory and performing signal processing in accordance with a program loaded into the instruction memory;
a main storage section having a self-refresh function and being accessible from the signal processing block;
an auxiliary storage section for storing the program for making the signal processing block perform the signal processing; and
a control section for, upon receipt of a standby instruction, performing control in such a manner as to transfer the program from the auxiliary storage section to the main storage section, and set self-refresh in the main storage section, and upon receipt of a return instruction, performing control in such a manner as to cancel the self-refresh in the main storage section, load the program from the main storage section to the instruction memory in the signal processing block, and activate the signal processing block.
1 Assignment
0 Petitions
Accused Products
Abstract
In a video audio processing device, a signal processing block (11, 12) includes an instruction memory (111, 121) and performs signal processing in accordance with a program loaded into the instruction memory. A main storage section (20) has a self-refresh function and is accessible from the signal processing block. An auxiliary storage section (30) stores the program for making the signal processing block perform the signal processing. Upon receipt of a standby instruction, a control section (15) performs control in such a manner as to transfer the program from the auxiliary storage section to the main storage section, and set self-refresh in the main storage section, and upon receipt of a return instruction, performs control in such a manner as to cancel the self-refresh in the main storage section, load the program from the main storage section to the instruction memory in the signal processing block, and activate the signal processing block.
12 Citations
9 Claims
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1. A video audio processing device for processing video and audio signals of digital television broadcasts, the device comprising:
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a signal processing block including an instruction memory and performing signal processing in accordance with a program loaded into the instruction memory; a main storage section having a self-refresh function and being accessible from the signal processing block; an auxiliary storage section for storing the program for making the signal processing block perform the signal processing; and a control section for, upon receipt of a standby instruction, performing control in such a manner as to transfer the program from the auxiliary storage section to the main storage section, and set self-refresh in the main storage section, and upon receipt of a return instruction, performing control in such a manner as to cancel the self-refresh in the main storage section, load the program from the main storage section to the instruction memory in the signal processing block, and activate the signal processing block. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A standby and return method of a video audio processing device, which processes video and audio signals of digital television broadcasts and which includes a signal processing block including an instruction memory and performing signal processing in accordance with a program loaded into the instruction memory, a main storage section having a self-refresh function and being accessible from the signal processing block, and an auxiliary storage section for storing the program for making the signal processing block perform the signal processing, the method comprising:
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a step of, upon receipt of a standby instruction, transferring the program from the auxiliary storage section to the main storage section; a step of putting the main storage section in a self-refresh state after the transfer of the program; a step of, upon receipt of a return instruction, canceling the self-refresh state of the main storage section; a step of loading the program from the main storage section to the instruction memory in the signal processing block after the cancellation of the self-refresh state; and a step of activating the signal processing block after the loading of the program. - View Dependent Claims (9)
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Specification