Multiple-CPU portable terminal with communication function and control method
US7373134B2 · kind B2 · utility
0Cited by
7References
15Claims
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Key dates
| Filing date | Nov 3, 2004 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Dec 28, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In response to the occurrence of an application event in a portable terminal with the communication function that has an application control CPU (ACPU) and a communication control CPU (CCPU), the operation of a control target unit, which is under control of a CCPU and which operates at an intermittent reception time, is detected. During the operation period of the control target unit, an ACPU sends a transmission request to the CCPU to start the CCPU. When the CCPU is in the sleep state in the intermittent reception cycle, the CCPU is not started by the ACPU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.