Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-07-24
2007-07-24
Trost, William (Department: 2617)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S067130, C455S425000, C455S550100, C379S201040, C379S433040, C345S002300, C345S003300, C345S003400, C345S087000, C345S169000, C345S204000, C345S617000, C345S698000, C345S699000
Reexamination Certificate
active
10512269
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.
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Kuga Hideki
Ozaki Emi
Rokugawa Tomoya
Ewart James D
Matsushita Electric - Industrial Co., Ltd.
Pearne & Gordon LLP
Trost William
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