Mobile terminal device

• US 20050105715A1
• Filed: 04/17/2003
• Published: 05/19/2005
• Est. Priority Date: 04/24/2002
• Status: Active Grant

• 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, Emil
• Granted Patent: US 7,248,899 B2
• Time in Patent Office: Days
• US Class Current: 379/374.30
• 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 telephones including GPS signal receivers H04M2250/10
• 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, which performs a display regarding an operation of the apparatus; and

a drive controller, which determines that whether a sound output operation or sound input operation is carried out in a state that the apparatus casing is close to a head of a user, and changes a drive operation of the display.

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 determines that whether a presence or absence of use of a handsfree device which allows to telephone call in a state that the apparatus casing is away from the head of the user during a period of a telephone call operation by the voice telephone call unit, and changes at least one of a drive system of the display and drive frequency of the display when the handsfree device is not used.

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

wherein the drive controller determines that whether a presence or absence of use of a handsfree device which allows to telephone call in a state that the apparatus casing is away from the head of the user during a period of a sound recording operation or a sound reproducing operation by the voice recorder, and changes at least one of a drive system of the display and drive frequency of the display when the handsfree device is not used.

4. The portable terminal apparatus as set forth in claim 1, further comprising a sensor which detects that the apparatus casing is came close to the head of the user,

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

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

a display, which performs a display regarding an apparatus operation; and

a drive controller, which changes a drive operation of the display on the basis of a telephone call start operation.