Pulse or digital communications – Transceivers
Reexamination Certificate
1999-12-20
2004-05-25
Chin, Stephen (Department: 2634)
Pulse or digital communications
Transceivers
C375S220000
Reexamination Certificate
active
06741639
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The following serial numbers of pending applications, Ser. No. 10/653,130, 10/671,469, 10/053,544, 10/080,538 and 10/101,828, may be related to the disclosure herein, which are assigned to the common applicants.
The present invention relates to a radio communicating apparatus, more particularly, to a radio communicating apparatus for implementing a radio facility as software by use of a dedicated language by which the radio facility is described, a radio communicating method, and a recording medium.
2. Description of the Related Art
There is excessively increasing demand for mobile communication system such as a cellular phone at present, and the market for terminal presents an active appearance. Incidentally, there are currently a variety of kinds of communication systems in the market.
For example, as for the cellular phone, a PDC system in Japan, an AMPS system and a CDMA system in U.S.A., and a GSM system in Europe, in other words, different systems exist mixedly. Further, a PHS system is also used in one nation, namely, Japan in addition to the cellular phone.
Although working to make the mobile communication system standard tends to be advanced by an international standard system IMT-2000, there is very little possibility that a completely similar system is adopted among Japan, U.S.A., and Europe.
The above-mentioned situation makes the demand for implement the mobile communication terminal by a multi-mode that is usable to a plurality of systems, more increasing. However, the implementation of the mobile communication terminal by the multi-mode is remarkably difficult. Two kinds of terminals are built in one casing physically, and this simple configuration might implement the communication terminal by a dual mode as far as possible.
A related art of a radio communicating apparatus will be now described with reference to a drawing hereinbelow.
FIG. 1
shows a construction of the prior art of the radio communicating apparatus. Referring to
FIG. 1
, reference numeral
701
denotes an amplifier for amplifying an RF (high frequency) signal;
702
a mixer for converting a frequency;
703
a synthesizer for supplying a signal to the mixer
702
;
704
an A/D converter for converting an analog signal into a digital signal;
705
a D/A converter for converting a digital signal into an analog signal;
706
a dedicated IC (ASIC);
707
a digital signal processing processor (DSP);
708
a dedicated ID (ASIC);
709
a central processing unit (CPU);
710
an I/O interface;
711
(a group of) hardware configured of the amplifier
701
to the I/O interface
710
;
712
an OS;
713
an application program to operate on the OS
712
;
714
an application program to operate on the DSP
707
; and
715
(a group of) software configured of the OS
712
to the application program
714
.
In accordance with the related art shown in
FIG. 1
, a radio is configured of the hardware
711
comprising: the amplifier
701
; the mixer
702
; the synthesizer
703
; an analog circuit such as the A/D converter
704
and D/A converter
705
; the dedicated ICs (ASICS)
706
and
708
; digital circuits such as the DSP
707
and the CPU
709
; and the I/O interface
710
, etc., and the software
715
comprising: the OS
712
operating on the CPU
709
; the application program
713
operating on the OS
712
; and the application program
714
for DSP, etc.
Next, the operation of a radio terminal as the related art will be described with reference to FIG.
1
. In case of reception, an RF section (
701
,
702
, and
703
in the figure) converts a high-frequency signal which is inputted from an antenna (not shown) into a base band signal with a low-frequency. A desired signal is converted into a digital signal by the A/D converter
704
, and then demodulates a transmitted signal by utilizing the DSP
707
and the CPU
709
.
In case of transmission, the CPU
709
and DSP
707
modulate an original signal to be transmitted. The D/A converter
705
converts the signal into an analog signal. The RF section converts the analog signal into a high-frequency signal, thereby transmitting the high-frequency signal through the antenna.
Programs which are executed by the DSP
707
and CPU
709
is stored in a memory or the like in the radio terminal as the software
712
,
713
, and
714
.
The control operation for the analog portion is performed, for example, by the application program
713
through the ASIC
708
. Although, the control operation for the analog portion is executed from the ASIC
708
in
FIG. 1
, the control operation is directly controlled from the CPU
709
and the DSP
707
in practice.
Incidentally, the related art of the radio terminal has the following problems. In other words, in accordance with the related art of the radio terminal, the application programs
713
and
714
correspond to the programs dedicated for the DSP
707
or CPU
709
, and thus are not used for general-purpose. Therefore, those programs are dedicated for some specific hardware architecture. It is impossible to use these programs for a radio having another hardware architecture which is different from the foregoing one without modification.
The RF section configured of the analog circuits are controlled by the dedicated LSIs such as the ASICS and gate arrays. Accordingly, it is impossible to use these programs for another different hardware.
As discussed above, the radio terminal shown as related art has problems such that the application program has no general-purpose, and the usage is restricted to a specific objective which depends on hardware.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a radio communicating apparatus capable of using an application program independent of a hardware architecture, a radio communicating method of the same, and a recording medium which records a program thereof.
According to the present invention, there is provided a radio communicating apparatus comprising: a receiving and transmitting device for receiving and transmitting radio signals; an A/D converting device for converting the received radio signal into a digital signal and outputting the digital signal; a D/A converting device for converting the digital signal to be transmitted into the radio signal and outputting the radio signal; a digital signal processing device for performing a digital signal process for an output of the A/D converting device and a digital signal process for an input of the D/A converting device; a control device for controlling at least one of the receiving and transmitting device, the A/D converting device, the D/A converting device, and the digital signal processing device by referring to a library comprising a group of software for implementing predetermined radio facilities and executing predetermined software on basic software.
According to the present invention, there is provided a radio communicating method comprising the steps of: a first process for receiving and transmitting radio signals; a second process for converting the received radio signal into a digital signal and outputting the digital signal; a third process for converting the digital signal to be transmitted into the radio signal and outputting the radio signal; a forth process for performing a digital signal process for an output of the second process and a digital signal process for an input of the third process; a fifth process for controlling at least one of the first process, the second process, the third process, and the forth process by referring to a library comprising a group of software for implementing predetermined radio facilities and executing predetermined software on basic software.
According to the present invention, there is provided a recording medium storing a computer-readable program, wherein the program comprises the steps of: a first process for executing predetermined software by referring to a library comprising a group of software to implement predetermined radio facilities; and a second process for controlling any one of a facilit
Kanno Shin-ichi
Namekata Minoru
Tamada Yuzo
Tomizawa Takeshi
Tsurumi Hiroshi
Ahn Sam K.
Chin Stephen
Kabushiki Kaisha Toshiba
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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