IMAGE FORMING APPARATUS AND CONTROL METHOD FOR EXECUTING A PROXY IN RESPONSE TO A HEARTBEAT
First Claim
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1. An image forming apparatus, comprising:
- a main control unit configured to control an image forming processing unit configured to execute an image forming process; and
a sub control unit configured to exchange data with an information processing apparatus via a network,wherein the main control unit includes a power-saving control unit configured to shift the main control unit to a power-saving state, in which power supply to the image forming processing unit is reduced, andwherein the sub control unit comprises;
a determination unit configured to determine, if an encryption communication protocol is used for exchanging messages and a message is transmitted from the information processing apparatus, whether the main control unit needs to be shifted to a non-power-saving state from the power-saving state based on a bit pattern of the message, without executing a decryption process on the message;
a return unit configured to give, if the determination unit determines that the main control unit needs to be shifted to the non-power-saving state, a return instruction for shifting the main control unit to the non-power-saving state, to cause the main control unit to transmit information in response to the message to the information processing apparatus; and
a response unit configured to transmit, if the determination unit determines that the main control unit does not need to be shifted to the non-power-saving state, information in response to the transmitted message to the information processing apparatus, without giving the return instruction for shifting the main control unit to the non-power-saving state.
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Abstract
An image forming apparatus automatically recognizes and responds to an encrypted heartbeat packet only with a small amount of calculation, without causing a sub control unit to execute an SSL/TLS decryption process. As a result, the image forming apparatus can execute a proxy response with less power consumption.
10 Citations
6 Claims
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1. An image forming apparatus, comprising:
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a main control unit configured to control an image forming processing unit configured to execute an image forming process; and a sub control unit configured to exchange data with an information processing apparatus via a network, wherein the main control unit includes a power-saving control unit configured to shift the main control unit to a power-saving state, in which power supply to the image forming processing unit is reduced, and wherein the sub control unit comprises; a determination unit configured to determine, if an encryption communication protocol is used for exchanging messages and a message is transmitted from the information processing apparatus, whether the main control unit needs to be shifted to a non-power-saving state from the power-saving state based on a bit pattern of the message, without executing a decryption process on the message; a return unit configured to give, if the determination unit determines that the main control unit needs to be shifted to the non-power-saving state, a return instruction for shifting the main control unit to the non-power-saving state, to cause the main control unit to transmit information in response to the message to the information processing apparatus; and a response unit configured to transmit, if the determination unit determines that the main control unit does not need to be shifted to the non-power-saving state, information in response to the transmitted message to the information processing apparatus, without giving the return instruction for shifting the main control unit to the non-power-saving state. - View Dependent Claims (2, 3, 4)
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5. A method for controlling an image forming apparatus including a main control unit configured to control an image forming processing unit configured to execute an image forming process, and a sub control unit configured to exchange data with an information processing apparatus via a network, the method comprising:
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shifting the main control unit to a power-saving state, in which power supply to the image forming processing unit is reduced; determining, if an encryption communication protocol is used for exchanging messages and a message is transmitted from the information processing apparatus, whether the main control unit needs to be shifted to a non-power-saving state from the power-saving state based on a bit pattern of the message, without executing a decryption process on the message; giving, if it is determined that the main control unit needs to be shifted to the non-power-saving state, a return instruction for shifting the main control unit to the non-power-saving state, to cause the main control unit to transmit information in response to the message to the information processing apparatus; and transmitting, if it is determined that the main control unit does not need to be shifted to the non-power-saving state, information in response to the transmitted message to the information processing apparatus, without shifting the main control unit to the non-power-saving state. - View Dependent Claims (6)
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Specification