Portable terminal

• US 20030073467A1
• Filed: 02/05/2002
• Published: 04/17/2003
• Est. Priority Date: 10/16/2001
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Tanaka, Eiichi, Watanabe, Yoshikazu, Kawahigashi, Yutaka, Fujii, Yoko, Hayasaka, Katsunori
• Granted Patent: US 6,959,208 B2
• Time in Patent Office: Days
• US Class Current: 455/567
• CPC Class Codes: G06F 3/0202 Constructional details or processes of manufacture of the input device
• CPC Class Codes: H04M 1/22 Illumination; Arrangements for improving the visibility of characters on dials
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones
• CPC Class Codes: H04M 2250/12 including a sensor for measuring a physical value, e.g. temperature or motion telephones including GPS signal receivers H04M2250/10
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In response to key operation, a portable terminal lights up an LCD unit, and also lights up keys only when it is dark around the portable phone by measuring external brightness.

Claims

1. A portable terminal comprising:

a display unit for displaying a screen;

an operation member for being operated by a user;

a first light for lighting up the display unit;

a second light for lighting up the operation member;

a light sensor for detecting external brightness; and

a light control unit for turning on the first light, as well as turning on the second light according to external brightness detected by the light sensor, in response to occurrence of a predetermined first event.

2. The portable terminal according to claim 1 further comprising, instead of the light control unit, a light control unit for turning on the first light according to external brightness detected by the light sensor as well as turning on the second light according to external brightness detected by the light sensor in response to occurrence of a predetermined first event.

3. The portable terminal according to claim 1 wherein the light control unit turns on the first light with brightness according to external brightness detected by the light sensor.

4. The portable terminal according to claim 2 wherein the light control unit turns on the first light with brightness according to external brightness detected by the light sensor.

5. The portable terminal according to claim 1 comprising:

a light emitter for indicating occurrence of a predetermined second event by lighting up or winking;

wherein the light sensor and the light emitter are arranged in proximity to each other; and

a window having a light transmitting member which covers and is used for both the light sensor and the light emitter.

6. The portable terminal according to claim 2 comprising:

a light emitter for indicating occurrence of a predetermined second event by lighting up or winking;

wherein the light sensor and the light emitter are arranged in proximity to each other; and

a window having a light transmitting member which covers and is used for both the light sensor and the light emitter.

7. The portable terminal according to claim 1 wherein the light control unit accepts operation of the operation member as the first event.

8. The portable terminal according to claim 2 wherein the light control unit accepts operation of the operation member as the first event.

9. The portable terminal according to claim 1 wherein the light emitter accepts an arrival of a call as the second event.

10. The portable terminal according to claim 2 wherein the light emitter accepts an arrival of a call as the second event.