Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Reexamination Certificate
1995-07-13
2001-05-01
Hunter, Daniel (Department: 2684)
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
C455S090300, C455S525000
Reexamination Certificate
active
06226500
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to portable radio communication apparatus such as a digital mobile phone having a two-way message transmitting/receiving function for use mainly in the field of mobile communication.
2. Description of the Related Art
As an additional function for mobile phones, the SMS (Short Message Service) transmitting function in two-way message transmission is specified in GSM03.40 of GSM (Global System for Mobile communications) standard of the digital mobile phone standard which constitutes one of the European Telecommunications Standards (ETS),. The SMS functions to transmit a message of a maximum of 160 characters through a wireless circuit in opposite directions.
Construction of a conventional portable radio communication apparatus will be described below with reference to
FIGS. 19 and 20
.
FIG. 19
is a block diagram showing the construction of a portable radio communication apparatus having a conventional two-way message transmitting function.
FIG. 20
is a front view showing an external appearance of the portable radio communication apparatus of FIG.
19
.
Referring to
FIG. 19
, the apparatus includes: an antenna
1
for transmitting/receiving a radio frequency signal; a radio section
2
for effecting a frequency conversion to a radio frequency or, for example, to an intermediate frequency; a modulator-demodulator section
3
operating for example in GMSK (Gaussian Filtered Minimum Shift Keying) modulating/demodulating method; a control section
4
having such as CPU, ROM, RAM for controlling the apparatus as a whole; a message memory
5
such as of RAM for temporarily storing a transmitting/received message; an operation section
6
; a display section
7
such as of liquid crystal; a sound processing section
8
; a microphone
9
; and a speaker
10
.
In
FIG. 20
, Numerals
6
a
,
6
b
and
6
c
denote a function key section, a 13-key section and a volume key, respectively.
Further, in
FIG. 20
, the function key section
6
a
includes: PWR key for performing switching on/off of power supply; STO key serving as a registering key for abbreviated dialing phone numbers; FCN key serving as a function key capable of calling various functions by a combination with numeral keys; END key for terminating a communication; P key serving as “one-touch” dialing key for an instant originating of call to already registered phone numbers; RCL key serving as a calling key for abbreviated dialing phone numbers; CLR key serving as a clearing key; and SEND key serving as a transmitting/receiving key. The 10-key section
6
b
includes keys for Arabic numerals of 1, 2, 3, 9, 0, an asterisk (*) key and a sharp (#) key, the numeral keys and the like serving also as character keys (A, B, C,) as shown when operating in a character input mode. However, the numerical key “0” corresponds to an operator call and is incapable of character input.
Operation of the conventional radio communication apparatus will be described below. A received message signal of SMS enters the control section
4
for its decoding from the antenna
1
through the radio section
2
and modulator-demodulator section
3
. It is then displayed as a message by the display section
7
and may be recorded at the message memory
5
by an operation of the operation section
6
.
A transmitting message signal of SMS may be formed by inputting one character at a time by means of the 10-key section
6
b
using the alphabet of A, B, C at the 10-key section
6
b
while confirming it on the display section
7
. Upon a transmitting operation (SEND key) at the operation section
6
, the formed message is encoded at the control section
4
and is then transmitted from the antenna
1
through the modulator-demodulator section
3
and radio section
2
.
In forming a transmitting message with the conventional portable radio communication apparatus as described above, it has been necessary to input one character at a time through the operation section
6
. For this reason, there is a problem of inconvenience that inputting of one character at a time is required even for the messages which are formed by using identical words.
Another problem is that, since only the English alphabet is indicated on the operation section
6
, inputting by other languages cannot be performed.
In receiving a message, there is a problem that, while the received message is read as it is displayed on the display section
7
, it is difficult to be read it the number of characters that may be displayed on the display section
7
is small.
Further, if the receiving side is absent, a problem of inconvenience occurs in case of an emergency, since no response will be received by the party originating the message and no transfer will be made.
Furthermore, there is a problem that it is impossible to find out when the message was received or originated, since no function is provided for concurrently recording the time of receiving and originating at the time of receiving/transmitting a message.
SUMMARY OF THE INVENTION
To solve the above described problems, it is an object of the present invention to provide a portable radio communication apparatus in which a transmitting message may be readily formed.
It is another object of the present invention to provide a portable radio communication apparatus in which inputting by a language other than the English language is possible.
It is another object of the present invention to provide a portable radio communication apparatus in which the content of a received message may be easily perceived even when the number of characters that may be displayed on a display section is small.
It is another object of the present invention to provide a portable radio communication apparatus in which automatic answering or automatic transferring in case of users absence is possible.
It is another object of the present invention to provide a portable radio communication apparatus in which the time of originating/receiving a call is readily identified.
A portable radio communication apparatus according to the present invention comprises:
an antenna for transmitting/receiving a radio frequency message signal;
a radio/modulator-demodulator section for demodulating a received radio frequency message signal by converting its frequency and for modulating a transmitting message signal to effect its frequency conversion into a radio frequency;
a message memory for storing transmitting/received messages;
a display section for displaying the transmitting/received messages;
a pre-message memory for previously storing a plurality of fixed messages;
an operation section; and
a control section for selecting one of the plurality of fixed messages stored in the pre-message memory by an operation of the operation section while causing it to be displayed on the display section to complete a desired message by adding another message thereto and for transmitting the desired message.
Accordingly, a desired message may be readily formed.
A portable radio communication apparatus according to the present invention comprises;
an antenna for transmitting/receiving a radio frequency message signal;
a radio/modulator-demodulator section for demodulating a received radio frequency message signal by converting its frequency end for modulating a transmitting message signal to effect its frequency conversion into a radio frequency;
a message memory for storing transmitting/received messages;
a display section for displaying the transmitting/received messages;
an alphabet memory for previously storing a plurality of alphabets of languages;
an operation section; and
a control section for selecting and confirming one of the plurality of language names of the alphabets stored in the alphabet memory while displaying them on the display section by an operation of the operation section.
Accordingly, a Language other than the English language may be used on the apparatus.
A portable radio communication apparatus according to the present invention comprises:
an antenna for transmitting/receiving a radio freque
Hunter Daniel
Mitsubishi Denki & Kabushiki Kaisha
Rothwell Figg Ernst & Manbeck
Tran Pablo
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