Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2000-04-05
2004-05-04
Tran, Congvan (Department: 2683)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S574000, C455S556100
Reexamination Certificate
active
06731951
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to portable wireless equipment such as a portable wireless phone for transferring voice, data, etc.
2. Description of the Prior Art
Recently, various mobile communications using semi-micro wave have been spotlighted, and because of its portability, a small and thin radio terminal which can be used for a long period of time is desired. Moreover, as the applications to be used, communications covering wide range of not only voice, but also data, image and the like is desired.
First, an example of a conventional portable wireless equipment PH is shown in FIG.
1
.
FIG. 1
shows one example of a portable telephone used exclusively for voice, which has an unillustrated radio section, a control section composed of CPU, memory or the like, and an unillustrated built-in antenna for diversity in a housing
91
formed of resin; a user interface section composed of a microphone
92
, a receiver
96
, a liquid crystal display screen
93
, keys
94
, etc. and an external antenna
95
on the outside face of the housing
91
; and a battery containing section
97
on the back face of the housing
91
.
FIG. 2
shows an example of a case where data communication is performed by using a conventional portable wireless equipment PH which is capable of data transmission.
A notebook type personal computer
101
(hereinafter abbreviated as “PC”) for data communication is connected to the portable wireless equipment PH shown in
FIG. 1
, via a data communication modem card
103
in a card shape inserted into a PC card slot
102
and a cable
104
.
The data received by the portable wireless equipment PH is transmitted to the PC via a data communication modem (modulator demodulator)
103
, and on the contrary, data from the PC
101
is transmitted to an unillustrated base station via the portable wireless equipment PH. At this time, the portable wireless equipment PH operates as one for performing data only communication between the base station and the PC
101
, and performing communication control such as call-out and call-in.
Such a portable wireless equipment PH is desired to be made small and thin, due to the portability.
However, a built-in antenna having relatively large-sized parts and RF (Radio Frequency) filter and the like are present in the aforesaid portable wireless equipment PH.
Moreover, a battery for driving is required to have a large capacity so that the portable wireless equipment PH can be used for a long period of time, and therefore a large-sized battery is used. Due to these factors, it cannot be desired to make the portable wireless equipment PH small and thin rapidly.
Furthermore, at the time of using the portable wireless equipment (at the time of communication), since the portable wireless equipment PH is applied to the ear and used, the transmitting and receiving antenna
95
operates in the vicinity of the head of a human body acting as a very lossy body. Therefore radiation characteristics of the antenna are greatly deteriorated to thereby deteriorate the communication quality.
On the other hand, when data communication is performed using the portable wireless equipment PH, since it is necessary to connect it to the PC
101
via the cable
104
, complicated operation such as cable connection or the like becomes necessary to perform data communication. Also, since the portable wireless equipment PH and the PC
101
are present away from each other, it is not suitable for mobile applications.
There is also a case where the portable wireless equipment PH is directly inserted to the PC
101
, but in this case, a radio modem capable of connecting with the PC
101
is required in the portable wireless equipment PH, hence it is not suitable for making the portable wireless equipment PH small.
As described above, when data communication is performed, since the PC
101
and the portable wireless equipment PH are connected, it is required to connect an earphone microphone jack or the like, when data and voice are communicated at the same time by means of a multicall or the like, or in the case of a videophone using the portable wireless equipment PH.
SUMMARY OF THE INVENTION
With a view to solving the above-described problems, it is an object of the present invention to provide a portable terminal suitable for a videophone using a multicall for communicating voice and data at the same time and a portable wireless equipment, which is small and thin, excellent in portability, and can be used for a long period of time, and is less affected by a human body.
To attain the above-described object, the gist of the present invention is constituted as described below.
A first gist of the present invention is a portable wireless equipment having a radio unit section for performing radio communications of communication information with a base station, and a user interface unit section comprising an input/output interface used for the radio communications by an operator, wherein
the radio unit section comprises a first radio communication section used for radio communications with the base station, a second radio communication section used for radio communications with the user interface unit section, a radio unit control section for controlling the first and second radio communication sections, and a first power supply section for driving the radio unit section, and
the user interface unit section comprises a third radio communication section used for radio communications with the radio unit section, with less power than the first radio communication section, a user interface unit control section for controlling the third radio communication section and the input/output interface, and a second power supply section for driving the user interface unit section, using less power or being smaller than the first power supply section,
the user interface unit section being capable of being separated from the radio unit section for performing radio communications.
A second gist of the present invention is a portable wireless equipment according to the first gist wherein the radio unit section and the user interface unit section are constructed detachably.
A third gist of the present invention is a portable wireless equipment according to the first or second gist, wherein the radio unit has a communication modem capable of connecting the radio unit section with an image data processing apparatus which can display images or data.
A fourth gist of the present invention is a portable wireless equipment according to the first or second gist, wherein the radio unit section has a first electric contact portion, and the user interface unit section has also a second electric contact portion, and when the radio unit section and the user interface unit section are combined into one, the first and second contact portions are connected.
A fifth gist of the present invention is a portable wireless equipment according to the third gist, wherein the radio unit section has a first electric contact portion, and the user interface unit section has also a second electric contact portion, and when the radio unit section and the user interface unit section are combined into one, the first and second contact portions are connected.
A sixth gist of the present invention is a portable wireless equipment according to the fourth gist, wherein the first and second contact portions include a power supply line, and when the radio unit section and the user interface unit section are combined into one, the user interface unit section is driven by the first power supply section in the radio unit section.
A seventh gist of the present invention is a portable wireless equipment according to the fifth gist, wherein the first and second contact portions include a power supply line, and when the radio unit section and the user interface unit section are combined into one, the user interface unit section is driven by the first power supply section in the radio unit section.
An eighth gist of the present invention is a portable wireless equipment according t
Kouchi Itsuki
Miyazaki Masao
Takebe Hiroyuki
Sharp Kabushiki Kaisha
Tran Congvan
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