Portable terminal apparatus having an improved display drive controller

• US 7,248,899 B2
• Filed: 04/17/2003
• Issued: 07/24/2007
• Est. Priority Date: 04/24/2002
• Status: Expired due to Fees

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Kuga, Hideki, Rokugawa, Tomoya, Ozaki, Emi
• Primary Examiner(s): Trost; William
• Assistant Examiner(s): Ewart; James D
• Application Number:
  US10/512,269
• Publication Number:
  US 20050105715A1
• Time in Patent Office: 1,559 Days
• Field of Search: 455/18, 455/66.1, 455/90.3, 455/413, 455/425, 455/343.1, 455/514, 455/550.1, 455/556.1, 455/566, 455/569.1, 455/574, 455/575.1, 455/575.2, 455/67.11, 455/67.13, 455/145, 455/570, 455/423, 345/7, 345/8, 345/158, 345/2.1, 345/2.3, 345/3.1, 345/3.3, 345/3.4, 345/87, 345/169, 345/204, 345/617, 345/698, 345/699, 379/93.17, 379/93.19, 379/93.23, 379/142.17, 379/144.08, 379/201.04, 379/433.04
• US Class Current: 455/566
• CPC Class Codes: H04M 1/605 involving control of the receiver volume to provide a dual operational mode at close or far distance from the user
• CPC Class Codes: H04M 2250/12 including a sensor for measuring a physical value, e.g. temperature or motion
• CPC Class Codes: H04W 52/027 by controlling a display operation or backlight unit
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A problem of this invention is to satisfy both of securement of visibility of a display unit and suppression of noises at the time of a telephone call etc. using a receiver and a microphone. In a portable terminal apparatus which relates to the invention, a control unit (16) judges whether a handsfree device (20) is connected or not, on the occasion that a telephone call operation is carried out by an operation unit (18) and a voice telephone call operation by a telephone call circuit (11) and a transmission/receiving unit (12) is started, and in case that the handsfree device (20) is not connected, it is judged that a user is making a telephone call by use of a receiver (13) and a microphone (14) in an apparatus main body in such a state that he puts an apparatus casing to his ear part, and at least one of a drive system, drive frequency of a display unit (19) which comprises a liquid crystal display is changed, and a drive operation giving priority over acoustic characteristics is carried out. On one hand, in case that the handsfree device (20) is connected, a drive operation with high picture quality giving priority over optical characteristics of the display unit (19) is carried out without changing the drive system etc.

Claims

1. A portable terminal apparatus having a portable apparatus casing, the portable terminal apparatus comprising:

a display for displaying information; and

a drive controller, which changes at least one of contrast of the display screen density of the display screen, and a drive frequency of the display on the basis of a telephone call start operation.

2. The portable terminal apparatus as set forth in claim 1, further comprising a voice telephone call unit which includes a radio communicator,

wherein the drive controller changes at least one of a drive system of the display and the drive frequency of the display when a handsfree device is not used with the portable terminal apparatus.

3. The portable terminal apparatus as set forth in claim 1, further comprising a voice recorder which records voice information,

wherein the drive controller changes at least one of a drive system of the display and the drive frequency of the display when a handsfree device is not used with the portable terminal apparatus.

4. The portable terminal apparatus as set forth in claim 1,

wherein a drive system of the display is related to a picture quality.

5. The portable terminal apparatus as set forth in claim 1,

wherein a drive system of the display is related to a sound quality.

6. A portable terminal apparatus having a portable apparatus casing, the portable terminal apparatus comprising:

a display for displaying information; and

a drive controller for changing at least one of contrast of the display screen density of the display screen, and a drive frequency of the display based on a carrying out of a sound output operation or a sound input operation.

7. The portable terminal apparatus as set forth in claim 6, further comprising a voice telephone call unit which includes a radio communicator, wherein the drive controller changes at least one of a drive system of the display and the drive frequency of the display when a handsfree device is not used with the portable terminal apparatus.

8. The portable terminal apparatus as set forth in claim 6, further comprising a voice recorder which records voice information, wherein the drive controller changes at least one of a drive system of the display and the drive frequency of the display when a handsfree device is not used with the portable terminal apparatus.

9. The portable terminal apparatus as set forth in claim 6, further comprising a sensor which detects that the apparatus casing is close to the head of the user,

wherein the drive controller changes at least one of a drive system of the display and the drive frequency of the display when a proximity state of the head is detected on the basis of a detection output of the sensor.

10. The portable terminal apparatus as set forth in claim 6, wherein a drive system of the display is related to a picture quality.

11. The portable terminal apparatus as set forth in claim 6, wherein a drive system of the display is related to a sound quality.

12. A portable terminal apparatus having a portable apparatus casing, the portable terminal apparatus comprising:

a display for displaying information;

a key button for starting a telephone call; and

a drive controller, which changes at least one of contrast of a display screen density of the display screen, and a drive frequency of the display when the key button is operated.

13. The portable terminal apparatus as set forth in claim 12, further comprising a voice telephone call unit which includes a radio communicator,

wherein the drive controller changes at least one of a drive system of the display and the drive frequency of the display when a handsfree device is not used with the portable terminal apparatus.

14. The portable terminal apparatus as set forth in claim 12, further comprising a voice recorder which records voice information,

wherein the drive controller changes at least one of a drive system of the display and the drive frequency of the display when a handsfree device is not used with the portable terminal apparatus.

15. The portable terminal apparatus as set forth in claim 12,

wherein a drive system for the display is related to a picture quality.

16. The portable terminal apparatus as set forth in claim 12,

wherein a drive system for the display is related to a sound quality.

17. A portable terminal apparatus having a portable apparatus casing, the portable terminal apparatus comprising:

a display for displaying information; and

a drive controller, wherein the drive controller changes a drive operation of the display from a “

one line reverse operation”

to a “

frame reverse operation”

based on a carrying out of a sound output operation or a sound input operation.

18. A portable terminal apparatus having a portable apparatus casing, the portable terminal apparatus comprising:

a display for displaying information; and

a drive controller,

wherein the drive controller changes a drive operation of the display from a “

one line reverse operation”

to a “

frame reverse operation”

on the basis of a telephone call start operation.

19. A portable terminal apparatus having a portable apparatus casing, the portable terminal apparatus comprising:

a display for displaying information;

a key button for starting a telephone call; and

a drive controller,

wherein the drive controller changes a drive operation of the display from a “

one line reverse operation”

to a “

frame reverse operation”

when the key button is operated.