JPH11284532A - Mobile radio terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically perform area presetting of a broadcasting station, in accordance with travelling without a user's operation and to easily receive broadcasting at a distination. SOLUTION: In a terminal device equipped with a radio receiving function, a presetting table 31a which associates each area information with the frequency of a radio broadcasting station and stores them is provided, and a CPU 29 determined whether or not the currently set frequency of a radio broadcasting station needs top be preset, based on the area information when receiving the area information from the base station. If it needs to be preset, the CPU 29 retrieves the frequency information of a radio broadcasting station corresponding to the area information from the table 31a and presets to the frequency information of the radio broadcasting station. Thus, it is possible to realize area presetting of a radio broadcasting station accompanying the movement without user being aware of it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio terminal used for a portable radio telephone, a PHS (Personal Handyphone System), a cellular system, a PCS (Personal Communication Systems) system, etc., and more particularly to a radio for receiving radio broadcasts. The present invention relates to a mobile wireless terminal device having a receiving function, which is suitable for use in setting a frequency of a radio broadcast station.

[0002]

2. Description of the Related Art In recent years, the spread of portable telephones has been remarkable, and the service area has been expanded throughout Japan. In particular, in digital mobile phone systems using digital signals, conventional analog mobile phone systems are being replaced because of their high frequency use efficiency. In addition, due to the LSI technology for performing digital processing, the high-efficiency battery technology, and the small packaging technology, the mobile wireless terminal has been reduced in size and lower in price, and has become widely used.

Here, with the miniaturization of mobile phones, it has been considered to add other functions without impairing the size of the mobile phone. For example, adding a radio reception function for receiving a radio broadcast to a mobile phone. When the radio receiving function is added to the mobile phone, there is an advantage that the mobile phone can be used as a radio in a standby state, and the demand of the user can be satisfied.

[0004] By the way, the latest radio apparatus has a function of presetting a frequency of a radio broadcast station different depending on each region, for example, a radio broadcast station in the "Tokyo" area and a radio broadcast station in the "Osaka" area. There is something. In this method, the frequencies of the radio broadcasting stations existing in each area are stored in advance in the ROM, and when the user selects the usage area, the frequency of the radio broadcasting station corresponding to the selected usage area is automatically set. It is a preset.

[0005]

As described above, in the case of receiving a radio broadcast in each area, the use of the preset function makes it possible to easily select a station according to the area without tuning operation. .

However, in a mobile radio terminal,
When the radio apparatus having the preset function is applied, every time the user moves to a distant place, the user must input and operate a preset in the area. For example, if the user moves from the "Tokyo" area to the "Osaka" area, the user cannot input the presets in the "Osaka" area and receive radio waves of radio stations existing in that area unless the user inputs and operates the preset. There is such a problem.

The present invention has been made in view of the above points, and it is possible to automatically perform a local preset of a broadcasting station accompanying a movement without user's operation, and to easily receive a broadcast of a moving destination. An object is to provide a mobile wireless terminal device.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a mobile radio terminal having a receiving function of setting frequency information and receiving a broadcast according to the frequency information. And a position table receiving means for receiving position area information indicating the current position of the apparatus, and a current setting based on the position area information received by the position area receiving means. A preset judging means for judging whether or not it is necessary to preset the frequency information of the broadcasting station; and when the preset judging means judges that the preset is necessary, the preset table corresponds to the position area information from the preset table. Preset control means for searching for frequency information of a broadcast station and presetting the frequency information of the broadcast station; Characterized by comprising (claim 1).

According to such a configuration, for example, when receiving a radio broadcast, by receiving the location area information transmitted from the base station by the location registration function, the current setting based on the location area information is received. It is determined whether or not it is necessary to preset the frequency information of the current radio broadcast station. Here, when new location area information is acquired by moving to a distant place, etc., it is determined that presetting is necessary. At that time, the frequency information of the radio broadcasting station corresponding to the location area information is determined from the preset table. It is searched and preset to the frequency information of the radio station. Therefore, even if the user is not aware,
It is possible to realize a regional preset of a radio broadcast station accompanying the movement.

[0010] Further, when a preset is required during broadcast reception, continuous reception of the broadcast is possible by continuously receiving the currently received broadcast without performing the preset (claim 2). Becomes

In the case where a preset is required during broadcast reception, if the reception intensity is below a predetermined level,
By performing the preset and switching to the broadcast of the affiliated station of the broadcast station for receiving (claim 3), the continuity of the broadcast reception can be maintained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a mobile wireless terminal device according to one embodiment of the present invention. This device is a portable mobile terminal device having both a mobile phone function such as a PHS and a radio reception function.

First, a description will be given of a device configuration as a portable telephone function. In FIG. 1, an antenna 1 is used for a mobile phone function, and a radio wave received by the antenna 1 is sent to a receiving circuit 3 via an antenna duplexer 2. The receiving circuit 3 mixes down the received radio wave using the local signal (local signal) of the synthesizer circuit 4 to convert the frequency into an IF signal, and quadrature demodulates the QPSK signal and outputs it to the A / D converter 6.

The A / D converter 6 converts an analog received signal output from the receiving circuit 3 into a digital signal and outputs the digital signal to the modem circuit 8. The modem circuit 8 performs delay detection, establishes frame synchronization, detects a color code, performs deinterleaving and error correction decoding in the channel codec 9, and performs VSELP (vector sum excited) in a decoder in the speech codec 10. linear
prediction).

The D / A converter 14 demodulates a digital audio signal output from the speech codec 10 into an analog signal. The demodulated voice signal is amplified by an amplifier 18 via a received voice changeover switch 16 and then converted to an acoustic signal by a receiver 19 and transmitted to the user.

The received voice changeover switch 16 is controlled by the control circuit 23, and switches between a portable radio telephone main body call and an earphone call. The voice of the other party is output through the receiver 19 in the mobile phone call, and the voice of the other party is output through the earphone 62 in the earphone call.

On the other hand, at the time of transmission, the voice of the user is converted into an electric signal by the microphone 21 and amplified by the amplifier 20, and then converted into a digital signal by the A / D converter 15 via the transmission voice switch 17. Is converted.

The transmission voice changeover switch 17 is controlled by the control circuit 23 and switches between a telephone call of the portable radio telephone and an earphone call. The user's voice is input through the transmitter 21 in the mobile phone call, and the user's voice is input through the earphone microphone 64 in the earphone call.

The transmission voice signal converted into a digital signal by the A / D converter 15 is transmitted to the speech codec 1
Sent to 0. The coder in the speech codec 10 performs VSELP encoding processing, and the channel codec 9 performs error correction encoding and interleave processing. The modem circuit 8 adds a frame signal and a color code signal and performs signal mapping processing, sets transmission timing, converts the signal into an analog signal through the D / A converter 7, and outputs the analog signal to the transmission circuit 5.

In the transmission circuit 5, the output signal of the D / A converter 7 is quadrature-modulated and mixed up using the local signal (local signal) of the synthesizer circuit 4,
Convert to a predetermined radio frequency signal. The output of the transmission circuit 5 is transmitted as a radio wave by the antenna 1 via the duplexer 2.

The control bus line 11 is a parallel bus signal line for exchanging signals between various circuit units. The control circuit 23 mainly outputs a control signal of each circuit and processes an output signal of each circuit.

The apparatus main body is provided with an LCD display 24 and a key unit 25. LCD display 2
Reference numeral 4 displays a telephone number, a mobile phone status, and the like. The key unit 25 is for performing input operations such as a telephone number, a call, and a call end.

The ring tone and the operation confirmation sound are obtained by amplifying the beep sound signal output from the control circuit 23 by the amplifier 26,
The sound signal is converted into an acoustic signal by the sounder 27 and is notified to the user.

The oscillating circuit 28 oscillates a predetermined clock signal required for the operation of the control circuit 23. The CPU 29 uses R
The entire device is controlled according to the program stored in the OM 31. Note that a program for controlling the present apparatus is installed through a recording medium such as a magnetic disk device. The RAM 30 is used as a memory for setting states and telephone numbers of the portable radio telephone. In this case, the contents stored in the RAM 30 are retained by a backup battery (not shown) even when the device is not powered on.

The ROM 31 is composed of an EEPROM or a flash ROM.
It stores the individual number and the adjustment information of the wireless device. Further, in the present embodiment, the ROM 31 stores a preset table 31a (see FIG. 2) in which the location area information of each area is associated with the area preset information of the frequency of the radio broadcast station, and an affiliate station for each radio broadcast station. An affiliated station table 31b (see FIG. 3) storing information is provided.
The contents of the ROM 31 can be arbitrarily rewritten by the user.

The stabilizing power supply circuit 32 stabilizes the output of the battery 33 and supplies power to each section. Next, a device configuration as a radio reception function will be described. Here, the description will be made assuming an FM radio, but the present invention is not limited to this. For example, an AM radio or a two-band radio may be used.

The radio antenna 41 is constituted by an earphone cord portion and receives an FM radio wave. The radio wave received by the radio antenna 41 is band-limited by the band-pass filter 42 and amplified by the amplifier 43. The output of the amplifier 43 is the mixer circuit 4
At 4, the signal is mixed down with a local signal (station oscillation signal) and frequency-converted to an IF signal.

The output of the mixer circuit 44 is further amplified by an amplifier 45, band-limited by an IF band-pass filter 46, further demodulated by a detector 48 via an amplifier 47, and becomes an audio frequency.

The audio frequency signal obtained by the detector 48 is frequency-corrected by a de-emphasis circuit 49 and sent to a changeover switch 60. Further, the signal level detection circuit 50 rectifies and detects the IF frequency and outputs it as a DC voltage output to the control circuit 23. Control circuit 2
In 3, this signal is received via an A / D converter (not shown) and used as radio control.

Such a series of functions is provided by the tuner IC 51.
And miniaturization is facilitated. Also,
The synthesizer circuit of the radio is also PLL (phase-locked loo)
p) -IC57. The configuration will be described below.

The PLL-IC 57 has a fixed frequency divider 53, a variable frequency divider 54, a phase comparison circuit 55, and a counter circuit 56. The fixed frequency divider 53 divides the frequency of the reference signal from the reference oscillation circuit 52. The output signal of the fixed frequency divider 53 is compared with the output signal of the variable frequency divider 54 by the phase comparator 55,
The VCO (voltage cotrolled oscill)
ator) 58 to obtain a local output. The setting of the variable frequency divider 54 is performed by the output signal of the control circuit 23,
It tunes to a predetermined desired station.

The counter circuit 56 counts the IF frequency. The information is output to the control circuit 23 and used for a control operation as radio tuning. The demodulated output of the radio is amplified by an amplifier 61 via a changeover switch 60, and then transmitted to the user as a sound signal from an earphone 62.

The earphone unit also serves as an earphone communication function of the portable radio telephone, and the transmission voice is transmitted from the microphone 6.
From 4 through the amplifier 63, the transmission voice is controlled by the transmission voice changeover switch 17, and becomes the transmission voice of the mobile phone. on the other hand,
The receiving side is guided via the received voice changeover switch 16. The insertion of the earphone unit is detected by a detection circuit (not shown), and the control circuit 23 switches the communication path.

Next, the configurations of the preset table 31a and the affiliated station table 31b used in the area preset of the radio broadcast station according to the present embodiment will be described. FIG. 2 is a diagram showing the configuration of the preset table 31a provided in the present apparatus.

The preset table 31a is a table in which the location area information of each area and the area preset information of the frequency of the radio broadcast station are associated with each other, and is provided in the ROM 31 shown in FIG. The location area information actually consists of an identification number (position number) representing the location registration area. The preset information includes the frequency of the radio broadcast station to be preset.

In the example of FIG. 2, "A station", "B station", "C station",
"D" as a preset station corresponding to the "Osaka" area
The “station”, “station E”, and “station F” are registered in advance.

FIG. 3 is a diagram showing the configuration of the affiliated station table 31b provided in the present apparatus. Affiliated station table 31b
Is a table storing affiliated station information for each radio broadcast station, and is provided in the ROM 31 shown in FIG. 1 similarly to the preset table 31a. Affiliated station information is
It comes from the frequency of a radio broadcast station that exists as an affiliated station. For example, if “station A” in the “Tokyo” area and “station D” in the “Osaka” area are related radio broadcast stations, “station D” is an affiliated station of “station A”.

In the example shown in FIG. 3, "Tokyo" is used as a reference area, and "Station D" in the "Osaka" area is registered in advance with respect to "A station" in the "Tokyo" area. Similarly, “Station E” in the “Osaka” area is associated with “Station B” in the “Tokyo” area, and “Station F” in the “Osaka” area is affiliated with “Station C” in the “Tokyo” area. Is registered in advance. These affiliated stations all follow the preset stations in the preset table 31a.

Next, the location registration function of the portable radio telephone will be described. FIG. 4 is a sequence diagram showing the location registration operation. In the figure, MS indicates a mobile terminal (mobile station), and BS indicates a base station (base station).

The location registration function means that the mobile terminal M
This is a function for registering the position of S in the network in units of a preset area. In this case, the broadcast information is transmitted from the base station BS, and the mobile terminal MS periodically receives the broadcast information (step S101). This notification information includes position area information (position number) used in the preset table 31a of FIG.

The mobile terminal MS checks the position number notified from the base station BS to determine whether or not the mobile terminal MS has moved to a new area. If the position number is different from the previously notified position number, it can be determined that the user has moved to a new area.

In this way, the mobile terminal MS determines the movement of the area based on the broadcast information, and sends a position registration request to the base station BS when moving to a new area (step S103).

When receiving the location registration request, the base station BS sends an authentication request to the mobile terminal MS (step S1).
04). The mobile terminal MS performs an authentication operation based on the authentication request from the base station BS, and returns an authentication response to the base station BS (step S105). Upon receiving this authentication response, the base station BS determines that the mobile terminal MS is a correct terminal, and sends a location registration acceptance permitting location registration (step S106).

When the base station BS receives the location registration acceptance, the location registration is completed here. After the completion of the location registration, the base station BS shifts to a predetermined standby operation and prepares for the reception of the paging signal, and periodically receives the broadcast information.

In addition to the location registration operation described above,
Location registration can be performed every time the power is turned on. Further, the location registration can be periodically performed by a timer. The registration method and the combination method are determined by the system.

Next, the operation of this embodiment will be described. FIG.
4 is a flowchart showing a preset operation of a radio broadcast station executed by the present apparatus.

The portable radio telephone of the present apparatus is in a call waiting state (step S201). In this state, the CPU 29 shown in FIG. 1 determines whether or not the above-described position registration operation has been completed (step S202).

When the position registration operation is completed (step S
(Yes in 202), the CPU 29 confirms whether or not the location area information (position number) has been updated (step S).
203). If the location area information (position number) has been updated (Yes in step S203), the CPU 29
Determines that the apparatus has moved to a new area, and performs the following preset control.

That is, when moving to a new area,
The CPU 29 updates the updated position area information (position number).
It is determined whether or not the local preset of the radio broadcast station is necessary based on the above (step S204). In this case, for example, in a system such as PHS that registers a location in a small cell, even if the location area information (location number) is updated,
Since it is a small-scale movement, it can be said that there is no need for a local preset of a radio station.

Here, when it is necessary to preset a radio broadcast station by moving to a distant place (Yes in step S204), the CPU 29 firstly executes
It is determined whether the apparatus is receiving a radio broadcast (step S205). This is a measure for making it impossible to continuously listen to the radio broadcast at that time if the area preset is performed during the reception of the radio broadcast.

As a result, if the apparatus is not currently receiving a radio broadcast (No in step S205), the CPU 29
Searches the preset table 31a shown in FIG. 2 for the local preset information of the radio station corresponding to the position area information (position number), and executes the preset of the radio station based on the local preset information (step S).
206).

That is, in the example of FIG. 2, when the user moves from the “Tokyo” area to the “Osaka” area,
“Station D” and “E” as preset stations corresponding to the area
Each frequency of "station" and "station F" is set.

In this case, the preset information is temporarily stored in the RAM 30, and is taken into the control circuit 23 when the user activates the radio. Then, it is set in the PLL-IC 57 of the radio according to the channel selection information (channel) of the user.

On the other hand, when the present apparatus is currently receiving a radio broadcast when the area preset is necessary (Yes in step S205), the apparatus waits until the reception of the radio broadcast is completed to execute the area preset. Will do. However, for example, when moving at a high speed, the user immediately leaves the radio range of the radio broadcasting station,
Radio broadcasts cannot be continuously received.

Therefore, in order to solve such a problem,
The reception radio wave of the currently receiving radio broadcast station is monitored, and when the reception intensity is lower than a predetermined level (Yes in step S207), the CPU 29 performs a region preset, and at this time, FIG. Affiliated station table 31 shown in
With reference to b, an affiliated station corresponding to the radio broadcasting station is selected and tuned to the affiliated station to maintain continuity of radio reception.

That is, for example, “A” in the “Tokyo” area
If you move to the "Osaka" area while receiving a radio broadcast from the "station", if the received radio wave decreases, it can be considered that you are already in the "Osaka" area. Referring to the station table 31b, “D” which is an affiliate of “Station A” among preset stations in the “Osaka” area is referred to.
Station "to receive the radio broadcast. As a result, the continuity of the radio reception can be maintained, and the user listening to the radio broadcast can be prevented from feeling unpleasant.

Also, the frequencies of the remaining radio broadcast stations in the area are preset similarly. That is,
In the case of the “Osaka” area, the frequencies of the “station E” and the “station F” are preset in addition to the “station D”. In this case, as described above, the preset information is temporarily stored in the RAM 30 and then taken into the control circuit 23, and is set in the PLL-IC 57 of the radio according to the user's channel selection information (channel).

When the level of the reception intensity is determined in step S207, for example, the radio wave condition may be temporarily deteriorated. It is necessary to monitor appropriate continuity, for example, not to switch to the affiliated station immediately at the time of the following, but to switch when the state below a predetermined level continues for a predetermined time.

If there is no affiliated station, it is unavoidable to perform the area preset of the radio broadcast station as it is, but in such a case, the user is notified that the area area has changed.

In some cases, a broadcast from a distant radio station is received depending on the user's preference. In such a case, it is convenient to enable manual setting. For example, when radio reception is performed manually, the position area information at that time is stored, and the preset table 3 is stored.
Updating the information of 1a improves convenience.

For example, when you are in the “Nagoya” area,
When the user selects "D station" in the "Osaka" area by manual operation, the preset table 31a sets the "Nagoya" area as position area information and the "D station" selected at that time as a preset station. Is changed, the "station D" can be automatically preset when entering the "Nagoya" area thereafter.

Further, when the location area information of the system is updated in a long term due to, for example, a change of the base station, it cannot be used as the information of the area preset. In such a case, since there is no correspondence information between the position area and the region preset as table information, the region preset is performed manually by the user.
If the received radio broadcast station and the location area information are registered in the preset table 31a at that time, the area preset can be automatically performed the next time the location is registered in the same area.

As described above, by storing the information of the area preset by the manual operation and the position area information at that time, the broadcast can be received with the radio station selected by the user as a preset. . Further, even if the location area information is not stored in advance, once the user uses the location area information, the area preset can be achieved to some extent based on the location area information. In this case, since there is no need to previously store the location area information for all over Japan, there is an advantage that the memory capacity can be saved and the location area information of the system can be updated.

In the above embodiment, the case of receiving a radio broadcast is assumed. However, the present invention is not limited to this. For example, the present invention is applicable to the case of receiving other broadcast information such as a television broadcast that requires a preset. Is also applicable.

Further, the method described in the above-described embodiment can be executed by a computer as a program such as a magnetic disk (floppy disk, hard disk, etc.), an optical disk (CD-ROM,
It is also possible to write the data on a recording medium such as a DVD or a semiconductor memory and apply it to various devices, or to transmit it via a communication medium and apply it to various devices. A computer that realizes the present apparatus reads the program recorded on the recording medium, and executes the above-described processing by controlling the operation of the program.

[0066]

As described above, according to the present invention, there is provided a preset table in which location area information of each area and frequency information of a broadcasting station are stored in association with each other. Based on the location area information, it is determined whether or not it is necessary to preset the frequency information of the currently set broadcasting station. If the preset is needed, the broadcast station corresponding to the location area information is determined from the preset table. Since the frequency information is searched and preset to the frequency information of the broadcast station, the local preset of the broadcast station accompanying the movement can be realized without the user being conscious. Therefore, for example, in a terminal device having a function of receiving a radio broadcast, even if the user moves far, the user can receive a radio broadcast in the area without performing the preset operation by himself.

Further, when a preset is required during broadcast reception, continuous reception of the currently received broadcast is performed without performing the preset, thereby enabling continuous reception of the broadcast.

In the case where a preset is required during broadcast reception, if the intensity of the received radio wave is lower than a predetermined level, the preset is performed and the broadcast is switched to the broadcast of the affiliated station of the broadcast station. Thus, continuity of broadcast reception can be maintained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a mobile wireless terminal device according to an embodiment of the present invention.

FIG. 2 is an exemplary view showing a configuration of a preset table in the embodiment.

FIG. 3 is an exemplary view showing the configuration of an affiliated station table according to the embodiment;

FIG. 4 is a sequence diagram showing a location registration operation in the embodiment.

FIG. 5 is an exemplary flowchart illustrating a preset operation of the radio broadcast station in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Antenna for mobile telephones 2 ... Antenna duplexer 3 ... Receiving circuit 4 ... Synthesizer circuit 5 ... Transmission circuit 8 ... Modem circuit 9 ... Channel codec 10 ... Speech codec 19 ... Handset 21 ... Speaker 23 ... Control circuit 24 ... LCD display 25 key unit 29 CPU 30 RAM 31 ROM 31a preset table 31b affiliated station table 41 radio antenna 51 tuner IC 57 PLL-IC 62 earphone 64 earphone microphone

Claims (3)

[Claims] 1. A mobile radio terminal device having a receiving function of setting specific frequency information and receiving a broadcast according to the frequency information, and stores location area information of each area and frequency information of a broadcasting station in association with each other. A preset table, position area receiving means for receiving position area information indicating the current position of the apparatus, and frequency information of a broadcasting station currently set based on the position area information received by the position area receiving means. A preset judging means for judging whether or not the preset is necessary; and when the preset judging means judges that the preset is necessary, the frequency information of the broadcasting station corresponding to the position area information is obtained from the preset table. And preset control means for searching and presetting to the frequency information of the broadcast station. Mobile radio terminal apparatus according to symptoms. 2. The method according to claim 1, wherein when the preset control unit determines that the preset is necessary during the broadcast reception, the preset control unit does not perform the preset and continuously receives the currently received broadcast. The mobile wireless terminal device according to claim 1. 3. An apparatus according to claim 1, further comprising: an affiliated station table storing affiliated station information for each broadcasting station; and level detecting means for detecting whether the reception intensity of the received broadcast is at a predetermined level. The means, when it is determined that the preset is required during the broadcast reception, performs the preset when the level detection means detects that the reception intensity of the currently received broadcast is equal to or lower than a predetermined level. 2. The mobile radio terminal device according to claim 1, wherein the mobile radio terminal device switches to a broadcast of an affiliated station of the broadcast station and receives the broadcast based on affiliated station information stored in the station table.