Communication apparatus, communication method and communication system
First Claim
1. A communication apparatus for communicating with a display terminal including a wireless communication processing unit adopted to receive image information and a display screen to display the image information, the communication apparatus comprising:
- an image information acquisition unit configured to acquire new image information to be transmitted to the display terminal through a wireless access point;
a storage unit configured to temporarily store the image information;
a decision unit configured to decide to change a state of the wireless communication processing unit from a power save state to a normal state when an amount of the image information stored in the storage unit is not less than a predetermined threshold value;
a message generation unit configured to generate a change instruction message in response to decision of the decision unit; and
a transmission unit configured to transmit the change instruction message to the display terminal through the wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state.
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Accused Products
Abstract
A communication apparatus includes an image information acquisition unit configured to acquire new image information to be transmitted to a display terminal through a wireless access point, a storage unit configured to temporarily store the image information, a decision unit configured to decide to change a state of a wireless communication processing unit of the display terminal from a power save state to a normal state when an amount of the image information stored in the storage unit is not less than a predetermined threshold value, a message generation unit configured to generate a change instruction message in response to decision of the decision unit, and a transmission unit configured to transmit the change instruction message to the display terminal through the wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state.
23 Citations
15 Claims
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1. A communication apparatus for communicating with a display terminal including a wireless communication processing unit adopted to receive image information and a display screen to display the image information, the communication apparatus comprising:
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an image information acquisition unit configured to acquire new image information to be transmitted to the display terminal through a wireless access point; a storage unit configured to temporarily store the image information; a decision unit configured to decide to change a state of the wireless communication processing unit from a power save state to a normal state when an amount of the image information stored in the storage unit is not less than a predetermined threshold value; a message generation unit configured to generate a change instruction message in response to decision of the decision unit; and a transmission unit configured to transmit the change instruction message to the display terminal through the wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A communication method between a communication apparatus and a display terminal, comprising:
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temporarily storing, in a storage unit of the communication apparatus, new image information to be transmitted to a display terminal through a wireless access point; deciding to change a state of a wireless communication processing unit of the display terminal from a power save state to a normal state when an amount of the stored image information of the storage unit is not less than a predetermined threshold value; generating a change instruction message in response to decision in the deciding; and transmitting the change instruction message from the communication apparatus to the display terminal through a wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state.
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14. A computer readable storage medium storing instructions of a computer program which when executed by a computer results in performance of steps comprising:
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temporarily storing, in a storage unit of the communication apparatus, new image information to be transmitted to a display terminal through a wireless access point; deciding to change a state of a wireless communication processing unit of the display terminal from a power save state to a normal state when an amount of the stored image information of the storage unit is not less than a predetermined threshold value; generating a change instruction message in response to decision in the deciding; and transmitting the change instruction message from the communication apparatus to the display terminal through a wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state.
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15. A communication system, including one or a plurality of display terminals and a communication apparatus,
the communication apparatus comprising: -
an image information acquisition unit configured to acquire new image information to be transmitted to the display terminal through a wireless access point; a storage unit configured to temporarily store the image information, the display terminal comprising; a wireless communication processing unit configured to execute wireless communication with the communication apparatus through the wireless access point; a screen generation unit configured to execute display on a display screen on the basis of the image information received by the wireless communication processing unit, the communication apparatus further comprising; a decision unit configured to decide to change a state of the wireless communication processing unit from a power save state to a normal state when an amount of the image information stored in the storage unit is not less than a predetermined threshold value; a message generation unit configured to generate a change instruction message in response to decision of the decision unit; and a transmission unit configured to transmit the change instruction message to the display terminal through the wireless access point to instruct the display terminal to change the state of the wireless communication processing unit from the power save state to the normal state, and the display terminal further comprising; a control unit configured to switch the state of the wireless communication processing unit from the power save state to the normal state upon receiving the change instruction message from the communication apparatus.
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Specification