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US 8,806,257 B2Granted
Image processing apparatus and control method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsSoo Hee Park, Yoon Tae Lee
Life of this patent
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Abstract
Disclosed is an image processing apparatus, which can differently set a clock ratio according to a use rate of a CPU, and a control method thereof. The image processing apparatus may include a receiver to receive a print command from a user terminal, and a controller to differently set a clock ratio according to a use rate of the CPU based on the print command.
Claims24
An image processing apparatus, comprising:
- a receiver to receive a print command from a user terminal;
- a determination unit that detects a type of emulation based on the print command and determines a use rate of a CPU of the image processing apparatus based on the type of emulation;
- and
- a controller to differently set a clock ratio by setting a CPU clock frequency and a bus clock frequency according to the use rate of the CPU of the image processing apparatus determined according to the detected type of emulation,
- wherein the clock ratio denotes a ratio of the CPU clock frequency to the bus clock frequency, and
- wherein the controller sets the clock ratio higher than a reference ratio when the use rate of the CPU is higher than a reference rate, sets the clock ratio lower than the reference ratio when the use rate of the CPU is not higher than the reference rate, and generates the CPU clock frequency and the bus clock frequency corresponding to the set clock ratio.
3 more elements
A method to control an image processing apparatus, the method comprising:
- receiving a print command at the image forming apparatus;
- detecting a type of emulation based on the print command;
- determining a use rate of a CPU of the image processing apparatus based on the detected type of emulation;
- and
- differently setting a clock ratio of the image processing apparatus by setting a CPU clock frequency and a bus clock frequency according to the use rate of the CPU of the image processing apparatus determined according to the detected type of emulation,
- wherein the clock ratio denotes a ratio of the CPU clock frequency to the bus clock frequency, and
- wherein when the use rate of the CPU is higher than a reference rate, the clock ratio is set higher than a reference ratio, when the use rate of the CPU is not higher than the reference rate, the clock ratio is set lower than the reference ratio, and after the clock ratio is set, a CPU clock frequency and the bus clock frequency are generated corresponding to the set clock ratio.
4 more elements
A clock setting system used to set a CPU clock of an image processing apparatus, comprising:
- a CPU to control the image forming apparatus;
- and
- a controller to provide a clock to the CPU according to a type of printer emulation used by a host computer connected to the image processing apparatus, wherein the controller comprises:
- a determination unit that detects the type of emulation based on a print command and determines a use rate of a CPU of the image processing apparatus based on the type of emulation;
- and
- a setting unit in electrical communication with the CPU and the determination unit to differently set a clock ratio of the CPU by setting a CPU clock frequency and a bus clock frequency based on the determined use rate of the CPU of the image processing apparatus,
- wherein the setting unit sets the clock ratio higher than a reference ratio when the use rate of the CPU is higher than a reference rate, sets the clock ratio lower than the reference ratio when the use rate of the CPU is not higher than the reference rate, and generates the CPU clock frequency and the bus clock frequency corresponding to the set clock ratio.
4 more elements
A method of controlling a CPU of an image processing apparatus, the method comprising:
- detecting a printer emulation type of a host computer connected to the image processing apparatus based on a received printer command;
- determining a use rate of the CPU of the image processing apparatus based on the type of emulation;
- determining a first clock rate to operate the CPU according to the determined use rate;
- and
- determining a second clock rate to operate a system bus of the image processing apparatus according to the determined use rate,
- wherein when the use rate of the CPU is higher than a reference rate, a clock ratio is set higher than a reference ratio, when the use rate of the CPU is not higher than the reference rate, the clock ratio is set lower than the reference ratio, and after the clock ratio is set, the CPU clock frequency and the bus clock frequency are generated corresponding to the set clock ratio.
3 more elements
Dependencies are inferred from the claim text.