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Communication device

A communication device and notification technology, applied in printing devices, sustainable communication technology, sustainable buildings, etc., can solve the problems of trouble, difficulty, and inability to accurately measure the remaining time.

Inactive Publication Date: 2011-11-09
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an interface for obtaining the remaining time from the timer for measuring time is usually not prepared in the main processing unit, and it is cumbersome and difficult to obtain the remaining time in the main processing unit.
In addition, even if the remaining time is successfully obtained, it takes time to transfer the remaining time from the main processing unit to the sub-processing unit, so there is a problem that the time cannot be accurately measured in the sub-processing unit

Method used

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Embodiment Construction

[0024] Embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below do not limit the inventions related to the claims, and not all elements and combinations thereof described in the embodiments are essential to the solution of the invention.

[0025] First, a printer as an example of a communication device according to an embodiment of the present invention will be described.

[0026] figure 1 It is a configuration diagram of a printer according to an embodiment of the present invention.

[0027] The printer 1 roughly includes a controller unit 10 , a printing function unit 20 , and a power supply unit 21 . The printing function section 20 forms an image on a predetermined image forming medium (paper, OHP sheet, etc.) under the control of the controller section 10 . The power supply unit 21 supplies power from a commercial power supply (not shown) to each functional unit of the printer 1 (for example, main C...

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Abstract

A communication device includes a main processing unit and a sub-processing unit. The main processing unit includes a main performing unit that acquires time information indicating a performance time, stores the time information in a time information storing unit, sets a timer unit to detect that it is the time indicated by the time information, and performs the process when detecting that it is the time, and a power saving determining unit that transmits a report of detecting that a power saving performance condition is satisfied to the sub-processing unit. The sub-processing unit includes a power control unit that stops the supply of power to the main processing unit when receiving the report that the power saving performance condition is satisfied, and restarts the supply of power when the timer unit detects that it is the time indicated by the time information of the time information storing unit.

Description

technical field [0001] The present invention relates to a communication device and the like having a main processing unit capable of executing processing, a sub processing unit capable of executing processing with lower power than the main processing unit, and a shared memory accessible to both the main processing unit and the sub processing unit. Background technique [0002] Conventionally, a communication device such as a printer has a main processing unit and a sub-processing unit that operates at a lower power than the main processing unit. When a predetermined condition is met, power supply to the main processing unit is stopped to reduce the power consumption of the communication device as a whole. power consumption. [0003] In such a communication device, when the sub-processing unit (sub-device unit) receives data and the like necessary for processing in the main processing unit (main unit), it restarts the supply of power to the main processing unit and causes the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32G06F15/00
CPCG06F1/32G06F15/00G06F1/3293B41J29/38Y02B60/32Y02D10/00Y02D30/50
Inventor 上嶋恭一
Owner SEIKO EPSON CORP
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