Portable communication terminal
US7542783B2 · kind B2 · utility
1Cited by
17References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2004 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Sep 16, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cellular phone has a black-and-white LCD that displays characters and communication information and a color LCD that displays an image. The image and the characters are displayed on the separate LCDs. Thus, the characters are not superimposed on the image, and they are easy to see. When the image is not needed (the user is not using the phone or the user is talking on the phone), only the black-and-white LCD displays the characters and the color LCD is turned off to save energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.