JP3331901B2 - Mobile phone terminal receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone terminal receiving apparatus for detecting that a specific portable telephone terminal has approached.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a block diagram illustrating a conventional position management device of a portable wireless device disclosed in Japanese Patent Application Laid-Open Publication No. HEI 10-115,036. In the figure, 16 is the I of the base station.
Base station ID conversion table holding D information, 17 is RF
An antenna for receiving a signal, 18 is an RF module unit for receiving an RF signal, 19 is a demodulation circuit for demodulating the RF signal, 20 is a detection unit for detecting a base station ID from the demodulated RF signal, and 21 is a device for controlling the device. The CPU 22 is an LCD for displaying the status.

FIG. 9 shows, for example, Japanese Patent Application Laid-Open No. H8-2658.
It is a block diagram showing the current position display device of the conventional simple type mobile phone terminal disclosed in Japanese Patent Publication No. 26-26. In the figure, 2
Reference numeral 3 denotes a wireless unit that receives an RF signal from a base station, 24 denotes a voice unit that converts the signal into a voice signal, 25 denotes an operation control unit that performs operations, and 26 calculates position information of the simplified type mobile phone terminal from base station information A data processing unit, 27 is a memory unit for storing various data, and 28 is a display unit for displaying the calculation result of the data processing unit 26.

Next, the operation will be described. In the former of FIG. 8, the RF signal transmitted from the base station is
7, down-converted to an intermediate frequency by the RF module section 18, and provided to the demodulation circuit 19. After being detected by the demodulation circuit 19, it is output to the base station ID detection unit 20. The ID information of the base station ID conversion table 16 is compared with the ID of the demodulated RF signal from the base station.
In step 1, the current position information is estimated from the base station ID information and the information in the base station ID conversion table 16 in which the position information of the base station corresponding to the ID is stored in advance, and the estimation result is displayed on the LCD 22.

[0005] In the latter part of FIG. 9, an RF signal transmitted from a base station is received by a radio unit 23, and the operation control unit 2 receives the RF signal.
In step 5, the base station ID and the base station ID transmitted when the base station communicates with the simplified mobile phone terminal are extracted from the received RF signal, and stored in the memory unit 27 in the data processing unit 26 in advance. Using the stored base station ID and position information, the position of the simplified type mobile phone terminal is estimated, the position is displayed on the display unit 28, and the audio unit 24 is displayed.
And audio output.

[0008] Since the conventional position management device for a portable radio device shown in FIG. 8 is configured as described above, the position information of the device itself is obtained from the transmission RF signal of the base station.
There has been a problem that it is not possible to obtain position information of a mobile phone terminal communicating with a base station.

Further, the conventional position display device of a conventional portable telephone terminal shown in FIG. 9 which solves the above-mentioned problem utilizes the fact that the portable telephone terminal normally communicates with a plurality of base stations. Extracting the ID of the base station and the ID of the simplified mobile phone terminal from the RF signal transmitted from the base station,
The position of the simplified portable telephone terminal is estimated by knowing which base station the simplified portable telephone terminal is communicating with. However, this method can estimate the position of the simplified mobile phone terminal from the communication status of the base station, but when the base station with which the simplified mobile phone is communicating moves within the same range, There has been a problem that a change in position cannot be detected. Further, when the number of communicating base stations is reduced due to radio wave conditions and the like, the position error increases in inverse proportion.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. A first object of the present invention is to allow a mobile phone terminal to periodically communicate with a base station other than during a call. The present invention is to obtain a mobile phone terminal receiving apparatus capable of receiving an RF signal and directly detecting approach of a specific mobile phone terminal. A second object is to store a mobile phone terminal ID to be detected in advance, thereby detecting a mobile phone terminal with a specific ID and reducing a storage circuit for holding a reference ID. A terminal receiving device is obtained. Further, a third object is to provide a mobile phone terminal capable of detecting the degree of approach using speed information from a speedometer when mounted on an automobile or the like and outputting an alarm or the like as necessary.

[0009]

In a portable telephone terminal receiving apparatus according to the present invention, an antenna for receiving an RF signal from a portable telephone terminal and an A / D converter for converting the received RF signal into a digital signal are provided. A storage circuit for storing the digital signal converted by the A / D conversion unit, an input / output control unit for controlling input / output from the storage circuit, and a digital RF signal stored in the storage circuit and the antenna. A comparison circuit that determines whether or not the input digitized RF signal is the same and detects an approach of a specific mobile phone terminal.

[0010] Further, there is provided an audio signal generating section which outputs an audio signal in accordance with the comparison result of the comparison circuit and notifies the user of the approach of a specific portable telephone terminal.

[0011] Further, there is provided a display unit which displays according to the comparison result of the comparison circuit and informs the user of the approach of a specific portable telephone terminal.

[0012] Further, an ID information portion recording control portion for controlling the input / output control portion so as to store only the portable telephone terminal ID information portion of the digitized RF signal stored in the storage circuit, and a digitization signal received from the antenna. And an input ID information part extraction control circuit for controlling a comparison circuit so as to extract only the mobile phone terminal ID information part of the RF signal.

Also, a storage circuit input detection circuit for detecting the input of a digitized RF signal to the storage circuit, a reception detection circuit for detecting a digitized RF signal received from the antenna, a storage circuit input detection circuit, and a reception circuit I for extracting only the mobile phone terminal ID information part according to the detection result of the detection circuit
And a D information part extraction circuit.

Further, the RF signal strengths of the level comparison antenna for receiving the RF signal from the portable telephone terminal, and the antenna and the level comparison antenna are compared, and the RF signal from the higher signal strength is compared.
It has a level circuit for outputting a signal to an A / D conversion circuit.

Further, the polarization plane of the RF signal of the level comparison antenna is changed to the polarization plane of the antenna.

Further, the apparatus is mounted on an automobile or the like, and the digitized RF signal of the portable telephone terminal stored in the storage circuit is compared with the digitized RF signal received from the antenna, and the digitized signal received from the antenna is digitized. When the RF signal is determined to be an RF signal from a mobile phone terminal,
It is provided with a calculation unit for calculating the approach status from the digitized RF signal and speed information from a speedometer of an automobile or the like.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a block diagram showing a mobile phone terminal receiving apparatus according to Embodiment 1 of the present invention. In the figure, 1 is an antenna for receiving an RF signal from a mobile phone terminal, 2 is an A / D converter for converting the RF signal received by the antenna 1 into a digital signal, and 3 is a storage circuit for storing the converted digital signal Reference numeral 4 denotes an input / output control circuit for controlling input / output from the storage circuit 3, and reference numeral 5 denotes a digitized RF signal stored in the storage circuit 3 and the same digitized RF signal received from the antenna 1. This is a comparison circuit for determining whether or not the operation is performed.

Next, the operation will be described. First, an antenna 1 receives an RF signal from a mobile phone terminal. The received RF signal is converted into a digital signal by the A / D conversion unit 2,
It is sent to the comparison circuit 5 and the input / output control circuit 4. The input / output control circuit 4 receives the converted digital signal and stores it in the storage circuit 3. Then, when the signal is received from the antenna 1, the RF signal of the mobile phone terminal stored in advance is extracted and sent to the comparison circuit 5. The comparison circuit 5 determines whether or not the received RF signal is the same as the previously stored RF signal of the mobile phone terminal.
An approach of a specific mobile phone terminal can be detected.

Embodiment 2 FIG. 2 is a block diagram showing the second embodiment. In the figure, the same reference numerals as those in FIG. Reference numeral 6 denotes an audio signal generation unit that outputs an audio signal according to the comparison result of the comparison circuit 5.

In FIG. 2, when the comparison circuit 5 determines that the signal is an RF signal of a specific portable telephone terminal, the audio signal generating unit 6 determines the approach of the specific portable telephone terminal by the audio signal. Can be notified.

Embodiment 3 FIG. 3 is a block diagram showing the third embodiment. In the figure, the same reference numerals as those in FIG. Reference numeral 7 denotes a display unit that performs display according to the comparison result of the comparison circuit 5.

In FIG. 3, when the comparison circuit 5 determines that the signal is an RF signal of a specific mobile phone terminal, the display unit 7 notifies the user of the approach of the specific mobile phone terminal by display on the display unit 7. be able to. Note that the comparison result may be displayed as flicker on the display unit 7 or an audio signal may be used together.

Embodiment 4 FIG. 4 is a block diagram showing the fourth embodiment. In the figure, the same reference numerals as those in FIG. Reference numeral 8 denotes an ID information part recording control circuit that controls the input / output control circuit 4 so as to store only the mobile phone terminal ID information part of the digitized RF signal stored in the storage circuit 3, and 9 denotes a digitization signal received from the antenna 1. An ID information part extraction control circuit that controls the comparison circuit 5 to extract only the mobile phone terminal ID information part of the RF signal.

In FIG. 4, an RF signal of a portable telephone terminal to be stored in advance is received by the antenna 1 and converted into a digital signal by the A / D converter 2. When the converted digital signal is stored in the storage circuit 3, the input / output control circuit 4 is controlled so that the ID information portion recording control circuit 8 stores only the ID information portion of the digitized RF signal. Thereafter, when the RF signal of the mobile phone terminal is received, the signal is converted into a digital signal by the A / D converter 2, and then the ID is output by the comparator 5.
The information part extraction control circuit 9 extracts only the ID information part, compares it with the ID information part stored in the storage circuit 3, and determines whether or not it is the same as a specific mobile phone terminal stored in the storage circuit 3 in advance. Thus, the approach of a specific mobile phone terminal can be known.

Embodiment 5 FIG. FIG. 5 is a block diagram showing the fifth embodiment. In the figure, the same reference numerals as those in FIG. 10 is a storage circuit input detection circuit for detecting the input of the digitized RF signal to the storage circuit 3, 11 is a reception detection circuit for detecting the digitized RF signal received from the antenna 1, and 12 is a storage circuit input detection circuit 10. And an ID information part extraction circuit for extracting only the mobile phone terminal ID information part according to the detection result of the reception detection circuit 11.

In FIG. 5, the input of the digital signal of the RF signal of the portable telephone terminal to be stored in advance is detected by the storage circuit input detection circuit 10 and reported to the ID information portion extraction circuit 12. The ID information part extraction circuit 12 converts the input / output control circuit 4 into a digitized RF based on the detection result.
Control is performed so that only the ID information portion of the signal is stored. When the mobile phone terminal receives an RF signal, the digital signal is detected by a reception detection circuit 11 that detects the digitized RF signal, and is reported to an ID information part extraction circuit 12. The ID information part extraction circuit 12 instructs the comparison circuit 5 to extract only the ID information part from the digitized RF signal received based on the detection result, and outputs the ID information part stored in the input / output control circuit 4 at the same time. Then, it is determined whether or not the specific mobile phone terminal is the same as the specific mobile phone terminal stored in the storage circuit 3 in advance, and the approach of the specific mobile phone terminal can be known.

Embodiment 6 FIG. FIG. 6 is a block diagram showing the sixth embodiment. In the figure, the same reference numerals as those in FIG. Reference numeral 13 denotes an antenna for level comparison that receives an RF signal from a mobile phone terminal. Reference numeral 14 compares the RF signal strengths of the antenna 1 and the antenna 13 for level comparison, and converts the RF signal from the higher signal strength into an A / D conversion circuit. 5 is a level comparison circuit.

In FIG. 6, the antenna gain of the level comparison antenna 13 for receiving the RF signal from the mobile telephone terminal and the antenna gain of the antenna 1, for example, the antenna 1 is formed in a fan beam shape, and the level comparison antenna 13 is omnidirectional. When formed into sex,
Since the antenna 1 is formed in the shape of a fan beam, it cannot be received when the pointing deviates from a specific azimuth. However, the antenna 13 for level comparison is omnidirectional and can always be received. Therefore, comparing these outputs, the antenna 1
The level comparison circuit 14 separates and outputs the output when the signal is received by the antenna 13 and the signal received by the level comparison antenna 13, so that the reception is not disabled even if the pattern of the antenna 1 is appropriately set and the directivity is changed. It is possible to detect the arrival direction.

Embodiment 7 In the sixth embodiment, the same antenna may be used for the antenna 1 and the antenna 13 for level comparison, and only the mounting structure may be changed to change the polarization planes of both. By changing the polarization plane, a gain difference is generated for specific polarizations of the antenna 1 and the level comparison antenna 13, so that the arrival direction can be detected as in the sixth embodiment.

Embodiment 8 FIG. 7 is a block diagram showing the eighth embodiment. In the drawings, the same reference numerals as those in FIGS. 1 to 3 denote the same parts, and a description thereof will be omitted. In the eighth embodiment, the mobile phone terminal receiving device is mounted on a vehicle such as an automobile, and it is possible to output an alarm for preventing a danger of collision when the automobile or the like approaches the mobile phone terminal. It was made. In the figure, reference numeral 15 compares the digitized RF signal of the mobile phone terminal stored in the storage circuit 3 with the digitized RF signal received from the antenna 1,
When it is determined that the digitized RF signal received from the antenna 1 is an RF signal from a mobile phone terminal, a calculation for calculating an approach state from the digitized RF signal and speed information from a speedometer of an automobile or the like. Department.

In FIG. 7, speed information from an automobile or the like is calculated by an arithmetic unit 15 based on the reception level of the portable telephone terminal detected by the comparison circuit 5, and the possibility of collision is calculated from the speed information. Further, when there is a possibility of collision, a collision prediction time is calculated, and when there is not enough time left for deceleration or avoidance operation by a brake or the like, a voice signal is given to a car driver or the like to notify the possibility of collision. This can be notified by the generator 6 and the display 7.

[0032]

Since the present invention is configured as described above, it has the following effects.

Since the apparatus is configured to directly receive the RF signal from the mobile phone terminal, it is possible to notify not only the existence of the mobile phone terminal but also the approach thereof. Further, there is an effect that the arrival direction can be detected.

Further, by storing the ID of the mobile phone terminal in advance, it is possible to detect the approach of a specific mobile phone terminal and reduce the number of storage circuits for holding the ID for reference.

Further, by being mounted on a vehicle such as an automobile, there is an effect that it can be used as a device for preventing a collision of the vehicle.

[Brief description of the drawings]

FIG. 1 is a block diagram of a mobile phone terminal receiving device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a mobile phone terminal receiving device according to a second embodiment of the present invention.

FIG. 3 is a block diagram of a mobile phone terminal receiving device according to a third embodiment of the present invention.

FIG. 4 is a block diagram of a mobile phone terminal receiving device according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram of a mobile phone terminal receiving device according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram of a mobile phone terminal receiving device according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram of a mobile phone terminal receiving device according to an eighth embodiment of the present invention.

FIG. 8 is a block diagram illustrating a conventional position management device of a portable wireless device.

FIG. 9 is a block diagram showing a current position display device of a conventional simplified mobile phone terminal.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 antenna, 2 A / D conversion unit, 3 storage circuit, 4 input / output control circuit, 5 comparison circuit, 6 audio signal generation unit, 7
Display section, 8 ID information portion recording control circuit, 9 ID information portion extraction control circuit, 10 storage circuit input detection circuit, 11
Reception detection circuit, 12 ID information part extraction circuit, 13
Antenna for level comparison, 14 level comparison circuit, 15 operation section, 16 base station ID conversion table, 17 antenna, 18 RF module section, 19 demodulation circuit, 20 detection section, 21 CPU, 22 LCD, 23 radio section, 2
4 audio unit, 25 operation control unit, 26 data processing unit,
27 memory unit, 28 display unit.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04B ^7/ 24-7/26 102 H04Q ^7/ 00-7/38

Claims (8)

(57) [Claims] An antenna for receiving an RF signal from a mobile phone terminal, an A / D converter for converting the received RF signal into a digital signal, and a storage for storing the digital signal converted by the A / D converter. A circuit, an input / output control unit for controlling input / output from the storage circuit, and whether the digitized RF signal stored in the storage circuit and the digitized RF signal input from the antenna are the same. A mobile phone terminal receiving device, comprising: a comparator circuit for determining whether the mobile phone terminal is approaching a specific mobile phone terminal. 2. The mobile phone terminal according to claim 1, further comprising an audio signal generating unit that outputs an audio signal in accordance with a comparison result of the comparison circuit and notifies a user of the approach of a specific mobile phone terminal. Receiver. 3. The mobile phone terminal receiving device according to claim 1, further comprising a display unit for displaying according to a comparison result of the comparison circuit to notify a user of approach of a specific mobile phone terminal. 4. An antenna for receiving an RF signal from a mobile phone terminal, an A / D converter for converting the received RF signal into a digital signal, and a memory for storing the digital signal converted by the A / D converter. A circuit, an input / output control unit for controlling input / output from the storage circuit, and whether the digitized RF signal stored in the storage circuit and the digitized RF signal input from the antenna are the same. A comparison circuit for determining whether or not a specific mobile phone terminal is approaching, and controlling the input / output control unit to store only the mobile phone terminal ID information portion of the digitized RF signal stored in the storage circuit. An ID information part recording control circuit, and a portable telephone terminal I of a digitized RF signal received from the antenna.
A mobile phone terminal receiving device comprising: an ID information portion extraction control circuit that controls the comparison circuit so as to extract only the D information portion. 5. An antenna for receiving an RF signal from a mobile phone terminal, an A / D converter for converting the received RF signal into a digital signal, and a memory for storing the digital signal converted by the A / D converter. A circuit, an input / output control unit for controlling input / output from the storage circuit, and whether the digitized RF signal stored in the storage circuit and the digitized RF signal input from the antenna are the same. A comparison circuit for determining whether a particular mobile phone terminal is approaching, a storage circuit input detection circuit for detecting the input of the digitized RF signal to the storage circuit, and a digitized RF signal received from the antenna And an ID information part extraction circuit for extracting only the mobile phone terminal ID information part according to the detection result of the storage circuit input detection circuit and the reception detection circuit. A mobile phone terminal receiving device, characterized in that: 6. An A / D conversion circuit for comparing the RF signal strengths of an antenna for level comparison receiving an RF signal from a mobile phone terminal and an antenna for a level comparison with an antenna for level comparison and transmitting an RF signal from a higher signal strength to an A / D conversion circuit. 6. The mobile phone terminal receiving device according to claim 1, further comprising a level circuit for outputting. 7. The mobile phone terminal receiver according to claim 6, wherein the plane of polarization of the RF signal of the antenna for level comparison is changed to the plane of polarization of the antenna. 8. The apparatus is mounted on an automobile or the like, and the digitized RF signal received from the antenna is compared with the digitized RF signal of the mobile phone terminal stored in the storage circuit and the digitized RF signal received from the antenna. When the signal is determined to be an RF signal from a mobile phone terminal, a calculation unit is provided for calculating an approach state from the digitized RF signal and speed information from a speedometer of an automobile or the like. The mobile phone terminal receiving device according to any one of claims 1 to 7.