Image forming apparatus and control method supplying a clock to image processing unit in accordance with an event

An image forming apparatus comprising:

• a first processor;
• an image processor configured to execute image processing;
• a power supply configured to supply power to the first processor in accordance with a first event and supply power to the image processor in accordance with a second event;
• and
• a clock generator configured to generate clock, the clock is supplied to the image processor in accordance with the second event,
• wherein the image processor executes initialization processing when power is supplied to the image processor from the power supply and the clock is supplied, and supplying the clock to the image processor is stopped without the power supply stopping supplying the power to the image processor upon completion of the initialization processing, and
• the supplying the clock to the powered image processor is resumed in accordance with a print start event received from a user.

A control method for an image forming apparatus including a first processor, an image processor configured to execute image processing, a power supply, and a clock generator configured to generate clock, the method comprising:

• supplying, from the power supply, power to the first processor and the image processor in accordance with a predetermined event;
• supplying the clock generated by the clock generator to the image processor in accordance with the predetermined event;
• executing, by the image processor, initialization processing when power is supplied from the power supply and the clock is supplied, and stopping supplying the clock to the image processor without the power supply stopping supplying the power to the image processor upon completion of the initialization processing;
• and
• resuming the supplying the clock to the powered image processor in accordance with a print start event received from a user.

A control method for an image forming apparatus including a first processor, an image processor configured to execute image processing, a power supply, and a clock generator configured to generate clock, the method comprising:

• supplying, from the power supply, power to the first processor in accordance with a first event;
• supplying, from the power supply, power to the image processor in accordance with a second event;
• supplying the clock generated by the clock generator to the image processor in accordance with the second event:
• executing, by the image processor, initialization processing when power is supplied to the image processor from the power supply and the clock is supplied to the image processor;
• stopping supplying the clock to the image processor without the power supply stopping supplying the power to the image processor upon completion of the initialization processing;
• and
• resuming the supplying the dock to the powered image processor in accordance with a print start event received from a user.

A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute steps in a control method for an image forming apparatus including a first processor, an image processor configured to execute image processing, a power supply, and a clock generator configured to generate clock, the program comprising:

• code for supplying power, from the power supply, to the first processor and the image processor in accordance with a predetermined event;
• code for supplying the clock generated by the clock generator to the image processor in accordance with the predetermined event;
• code for executing, by the image processor, initialization processing when power is supplied to the image processor and the clock is supplied to the image processor;
• code for stopping supplying the clock to the image processor without the power supply stopping supplying the power to the image processor upon completion of the initialization processing;
• and
• code for resuming the supplying the clock to the powered image processor in accordance with a start event received from a user.

A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute steps in a control method for an image forming apparatus including a first processor, an image processor configured to execute image processing, a power supply, and a clock generator configured to generate clock, the program comprising:

• code for supplying, from the power supply, power to the first processor in accordance with a first event;
• code for supplying, from the power supply, power to the image processor in accordance with a second event;
• code for supplying the clock generated by the clock generator to the image processor in accordance with the second event;
• code for executing, by the image processor, initialization processing when power is supplied to the image processor and the clock is supplied to the image processor;
• code for stopping, by the clock generator, supplying the clock to the image processor without the power supply stopping supplying the power to the image processor upon completion of the initialization processing;
• and
• code for resuming the supplying the clock to the powered image processor in accordance with a print start event received from a user.