Digital radio telephone for a digital mobile radio communication system
A digital radio telephone comprises a radio portion for receiving a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting the encoded digital signal, a control signal processing portion for decoding the demodulated encoded digital signal to obtain the control information, a telephone number information detecting means for detecting whether the decoded control information includes mate telephone number information, a memory for storing the telephone number information, a time information management means for specifying an incoming time of the telephone number information to output a time information, and a memory management means for recording the telephone number information corresponding to the time information into the memory.
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This application is a division of application Ser. No. 08/728,359, filed Oct. 9, 1996, now U.S. Pat. No. 6,075,984 divisional of U.S. application Ser. No. 11/589,954, filed on Oct. 31, 2006, which issued as U.S. Pat. No. Re. 40,277 on Apr. 29, 2008, which is a continuation of U.S. application Ser. No. 10/653,747, filed on Sep. 3, 2003, which issued as U.S. Pat. No. Re. 40,417 on Jul. 1, 2008, which is a reissue of U.S. Pat. No. 6,285,872 (U.S. application Ser. No. 09/535,804, filed on Mar. 28, 2000), which issued on Sep. 4, 2001, which is a divisional of U.S. application Ser. No. 08/728,359, filed Oct. 9, 1996, which issued as U.S. Pat. No. 6,075,984 issued on Jun. 13, 2000, all of which claim priority to Japanese Patent Application No. 8-43510, filed on Feb. 29, 1996.
More than one reissue application has been filed for the reissue of U.S. Pat. No. 6,285,872. The reissue applications are U.S. application Ser. No. 10/653,747, filed Sep. 3, 2003, which issued as U.S. Pat. No. Re. 40,417 on Jul. 1, 2008; U.S. application Ser. No. 11/502,579 filed Aug. 11, 2006, which issued as U.S. Pat. No. Re. 40,210; U.S. application Ser. No. 11/589,954 filed Oct. 31, 2006, which issued as U.S. Pat. No. Re. 40,277 on Apr. 29, 2008; U.S. application Ser. No. 11/980,695 filed Oct. 31, 2007, which issued as U.S. Pat. No. Re. 41,330 on May 11, 2010; and U.S. application Ser. No. 11/980,694 (the present reissue divisional application) filed Oct. 31, 2007.
BACKGROUND OF THE INVENTION1. Field of the Invention
The invention relates to a digital radio telephone used in a digital mobile radio communication system such as a land mobile/portable phone system and a PHS (Personal Handyphone System) adopting a digital telephone system for example. The invention particularly relates to a digital radio telephone having a function of storing a mate telephone number (hereinafter, referred to as “incoming telephone number”) and a function of calling the stored phone number (hereinafter, referred to as “incoming redialing function”).
2. Description of the Prior Art
An operation of the incoming redialing function of the analog radio telephone is explained below. First, a radio signal containing control information received via an antenna 6 using a control channel is demodulated by a radio portion 5 and outputted as a control signal which is an analog signal in a base band. Control information in the demodulated control signal is decoded by a decoder 15 and is processed by a microcomputer 10 to establish the radio communication channel. Then, a radio signal containing the telephone number information received via the antenna 6 using the communication channel is demodulated by the radio portion 5 and outputted as the DTMF signal which is the analog signal in 9 base band. The telephone number information in the demodulated DTMF signal is detected, judged, and decoded by a DTMF receiver 16. Then, the output receiver 16 from the DTMF signal is processed by the microcomputer 10 and stored in a memory 12. On the other hand, in case of calling by redialing, the telephone number information stored in advance in the memory 12 by the microcomputer 10 is read out, encoded by an encoder 17, modulated by the radio portion 5, then, transmitted from the antenna 6 as a radio signal.
Since the incoming redialing function in the conventional analog radio telephone constructed as explained above requires the DTMF receiver for detecting the telephone number information in addition to the construction for operating the telephone function itself, there is a problem that the conventional analog radio telephone construction is complicated. Also, since the conventional analog radio telephone redials using the telephone number information stored only in the memory, it is difficult to provide an incoming redialing function having high-performance or multifunction in consideration of user service.
It is an object of the present invention to provide a digital radio telephone having a high-performance incoming redialing function by maximally using the digital processing ability naturally included in a digital radio telephone.
SUMMARY OF THE INVENTIONAccording to one aspect of the invention, a digital radio telephone comprises a radio portion for receiving a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting the encoded digital signal; a control signal processing portion for decoding the demodulated encoded digital signal to obtain the control information; a telephone number information detecting means for detecting whether the decoded control information includes mate telephone number information; a memory for storing the telephone number information; a time information management means for specifying an incoming time of the telephone number information to output a time information; and a memory management means for recording the telephone number information corresponding to the time information into the memory.
According to another aspect of the invention, a digital radio telephone used for an external line and an extension line further comprises an extension/external line judging means for judging whether the telephone number information is from the extension or from the external line; an external line information addition means for adding an external line calling information to the telephone number information according to a judging result to output as new telephone number information.
Preferably, the memory management means in the digital radio telephone records a predetermined number of telephone number information in the memory starting with telephone number information received most recently.
According to further aspect of the invention, a digital radio telephone further comprises an operating portion for supplying an operating signal, and a display portion for displaying various information during operation, wherein, the memory comprises a first memory portion for storing the telephone number information included in the control information and a second memory portion for registering other telephone numbers information inputted from the operating portion corresponding identification information to the telephone numbers; and the operating portion instructs the display portion to display the telephone number information recorded in the first memory portion together with the corresponding identification information recorded in the second memory portion.
According to further aspect of the invention, a digital radio telephone further comprises an operating portion for supplying an operating signal, a display portion for displaying various information during operation, wherein, the memory comprises a first memory portion for storing the telephone number information included in the control information and a second memory portion for registering other telephone numbers information inputted from the operating portion corresponding identification information to the telephone numbers; and the operating portion instructs the display portion to display the telephone number information recorded in the first memory portion together with the corresponding identification information recorded in the second memory portion.
According to further aspect of the invention, a digital radio telephone further comprises an operating portion for supplying an operating signal, a display portion for displaying various information during operation, wherein, the operating portion instructs the display portion to display the telephone number information one after another in a circulative way starting with telephone number information received most recently.
Preferably, the operating portion in the digital radio telephone instructs to make a calling process according to the telephone number information when predetermined telephone number information recorded in the memory is displayed on the display portion.
Preferably, the memory in the digital radio telephone comprises a first memory portion for storing the telephone number information included in the control information and a second memory portion for registering other telephone numbers information inputted from the operating portion corresponding identification information to the telephone numbers; and the operating portion instructs the second memory portion to register the predetermined telephone number information when the predetermined telephone number information recorded in the first memory portion is displayed on the display portion.
The present invention is concretely explained focusing on a digital radio telephone compatible to both a private (extension) line and a public (external) line.
First, in a step 401, the telephone number information detecting means 40 detects whether the telephone number information is included in the control information from the control signal processing portion 9. The process is completed in case the telephone number information is not included In case telephone number information is included, the extension/external line judging means 70 identifies and judges whether the telephone is in the extension or in the external line in a next step 402. In case the call is in the external line, in a next step 403, the external line information addition means 80 adds external line identifying information (“0” as the external line calling number, for example) to the telephone number information in the control information. In case the call is in the extension, the external line information addition means 80 extracts the telephone number information from the control information and outputs the telephone number information. Then, in a step 404, the time information management means 50 specifies the time when the telephone number information is received. In a next step 405, the operating portion 11 instructs the telephone number information comparison means 67 how to process incoming telephone numbers received. In the case where all incoming telephone numbers are to be recorded, the operation goes to step 406. In the case of where only the latest received incoming telephone number previously recorded is to be maintained in memory, the operation goes to a step 410. In the step 410, the telephone number information comparison means 67 compares the recorded incoming telephone number information recorded in an incoming recording memory portion 121 of memory 12 with the latest incoming telephone number information. In the case where the incoming telephone number does not correspond to the registered telephone number information, the operation goes to the step 406. On the other hand, in the case where the incoming telephone number is identical to a telephone number already recorded in the registered telephone number information, the operation goes to step 411. In the step 411, the recording means 63 deletes the old telephone number information from the incoming recording memory 121 which matches the latest incoming telephone number, and goes to step 408. In the step 406, the vacant memory judging means 61 judges whether there is an area for new incoming telephone number information to be recorded in the incoming recording memory 121. In the case where the incoming recording memory 121 has a vacant storage area, the incoming telephone number information is recorded in the incoming recording memory 121 together with the time information. In the case where the incoming recording memory 121 is fully occupied, the operation goes to a next step 407, where the telephone number information with the oldest time information is deleted from the incoming recording memory 121. In the next step 408, the second oldest telephone number information is incremented and recorded into the location in the incoming recording memory 121 where the oldest time information is deleted. This operation is repeated continuously. In a next step 409, the latest incoming telephone number information is finally recorded together with the time information into a location in the vacant incoming recording memory 121, and the operation is then completed.
Claims
1. A digital radio telephone comprising:
- a radio portion for receiving a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting said encoded digital signal;
- a control signal processing portion for decoding said demodulated encoded digital signal to obtain said control information;
- a telephone number information detecting means for detecting, before a speech path is established with an incoming call apparatus, whether the decoded control information includes incoming telephone number information;
- a memory for storing said telephone number information, said memory having an incoming recording memory and a registering memory, with said incoming recording memory storing a telephone number and a time information of an incoming telephone call;
- a time information management means responsive to said telephone number information detecting means for specifying an incoming time of said telephone number information to output said time information; and
- a memory management means for recording said telephone number information corresponding to said time information into said memory, with said telephone number being compared to previously stored telephone numbers, and being stored in a first memory location if said telephone number is not in said incoming recording memory, and being deleted from an existing memory location and being stored in a first memory location if said telephone number is currently in said incoming recording memory.
2. The digital radio telephone of claim 1, further comprising:
- an identification information memory for storing identification information corresponding to said telephone number information stored in the memory.
3. A digital radio telephone comprising:
- a radio device configured to receive a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting said encoded digital signal;
- a control signal processor configured to decode said demodulated encoded digital signal to obtain said control information;
- a telephone number information detector configured to detect, before a speech path is established with an incoming call apparatus, an incoming telephone number information included in said control information;
- an incoming recording memory for storing a plurality of said incoming telephone number information;
- an operation portion for inputting an operation signal to cause a predetermined operation to be carried out; and
- a display portion for displaying display information based on said telephone number information,
- wherein a plurality of said display information are ranked for being displayed on said display portion and displayed on said display portion in sequence from said display information with a downward ranking order, in accordance with the ranking, depending on said operation signal, and
- when said operation signal is inputted after a display information with the lowest ranking was displayed, said display information with the highest ranking is displayed.
4. The digital radio telephone according to claim 3 or 5, wherein calling process to telephone number information of display information which is displayed on said display portion, is carried out depending on an operation signal which is inputted from said operation portion.
5. A digital radio telephone comprising:
- a radio device configured to receive a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting said encoded digital signal;
- a control signal processor configured to decode said demodulated encoded digital signal to obtain said control information;
- a telephone number information detector configured to detect, before a speech path is established with an incoming call apparatus, an incoming telephone number information included in said control information;
- an incoming recording memory for storing a plurality of said incoming telephone number information;
- an operation portion for inputting an operation signal to cause a predetermined operation to be carried out; and
- a display portion for displaying display information based on said telephone number information,
- wherein a plurality of said display information are ranked for being displayed on said display portion and displayed on said display portion in sequence from said display information with a downward ranking order, in accordance with the ranking, depending on said operation signal, and
- when said operation signal is inputted after a display information with the highest ranking was displayed, said display information with the lowest ranking is displayed.
6. The digital radio telephone according to claim 3 or 5, wherein, in case of carrying out communication between first and second communication networks mutually, additional information, which is required for calling from said first telephone network to said second telephone network, is added to telephone number information detected by said telephone number information detector, to be stored in said incoming recording memory.
7. The digital radio telephone according to claim 3 or 5, wherein, in case the telephone number information is not included in the control information, a storing operation is not carried out for said incoming recording memory.
8. The digital radio telephone according to claim 3 or 5, further comprising:
- a time information management device for outputting incoming time information which corresponds to telephone number information detected by said telephone number information detector,
- wherein said incoming recording memory stores a plurality of information sets including telephone number information which is detected by said telephone number information detector, and incoming time information which corresponds to the telephone number information and was outputted by said time information management device.
9. The digital radio telephone according to claim 8, wherein the ranking is carried out based on incoming time information.
10. The digital radio telephone according to claim 8, wherein said incoming recording memory stores information sets which correspond to the given number of telephone number information, starting from telephone number information which has been received most recently.
11. A digital radio telephone comprising:
- a radio device for receiving a radio signal modulated by an encoded-digital signal including control information, and for outputting a demodulated signal;
- a control signal processor for decoding the control information from the demodulated encoded-digital signal having been outputted from said radio device;
- a telephone number information detector for detecting the presence or absence of an incoming-call apparatus' telephone-number information included in the decoded control information before a speech path is to be established;
- a time information management device responsive to the telephone number information detector for outputting incoming time information corresponding to the telephone-number information;
- an incoming recording memory for storing a plurality of information-sets each of which is made as a pair of telephone-number information having been detected by said telephone number information detector, and incoming time information, corresponding to the telephone-number information, having been outputted by said time information management device;
- an operation portion for inputting an operation signal to cause a predetermined operation to be carried out; and
- a display portion for displaying display information,
- wherein said display portion is configured to display, depending on the operation signal inputted from said operation portion, the display information based on the plurality of information-sets corresponding to the incoming time information stored in said incoming recording memory, a) in a descending order starting from the telephone-number information of the latest incoming call that has been most recently received, and b) starting from the telephone-number information of the latest incoming call, followed by the earliest telephone-number information, and the next earliest telephone-number information, in an ascending order.
12. The digital radio telephone according to claim 11, wherein the incoming recording memory stores information-sets which correspond to information on a given number of telephone numbers, starting from telephone-number information of the latest incoming call.
13. The digital radio telephone according to claim 11, wherein an information-set corresponding to the telephone-number information of the latest incoming call is only stored into the incoming recording memory, from among a plurality of identical sets of received telephone-number information.
14. The digital radio telephone according to claim 11, wherein display information based on information-sets stored in the incoming recording memory is displayed on the display portion, and a calling process is performed for the telephone-number information included in an information-set corresponding to the displayed display information according to the operation signal inputted from the operation portion.
15. The digital radio telephone according to claim 11, wherein, when communications between a first telephone network and a second telephone network are carried out, additional information required for calling from the first telephone network to the second telephone network is added to telephone number information having been detected by the telephone number information detector, and stored in the incoming recording memory.
16. The digital radio telephone according to claim 11, wherein a write control is taken on an information-set corresponding to the detected telephone-number information to said incoming recording memory, based on either the state of availability in a memory area of the incoming recording memory, or whether telephone-number information detected by the telephone number information detector is included or not in said incoming recording memory.
17. The digital radio telephone according to claim 11, wherein, when telephone-number information is not included in the control information, a storing operation is not carried out for the incoming recording memory.
18. The digital radio telephone according to claim 11, further comprising a registration-information memory for registering predetermined telephone-number information and additional information that relates to the telephone-number information, so as to be correlated with each other.
19. The digital radio telephone according to claim 18, wherein, when telephone-number information stored in the incoming recording memory is the same as the telephone-number information that is already stored in the registration-information memory, additional information corresponding to the telephone-number information stored in said registration-information memory is displayed on the display portion.
20. The digital radio telephone according to claim 18, wherein display information based on information-sets stored in the incoming recording memory is displayed on the display portion, and information included in the information-sets is registered into the registration-information memory according to the operation signal inputted from the operation portion.
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Type: Grant
Filed: Oct 31, 2007
Date of Patent: Apr 15, 2014
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo)
Inventor: Takashi Murata (Tokyo)
Primary Examiner: Willis R Wolfe, Jr.
Application Number: 11/980,694
International Classification: H04M 3/42 (20060101);