JPH07209010A - Position confirming device - Google Patents

Abstract

PURPOSE:To make the position confirmation with a simple and reduced price constitution of a device. CONSTITUTION:The position confirming device is provided with TV receivers 1 and 2 to receive TV waves of VHF and UHF, respectively, radio receivers 3 and 4 to receive radio waves of AM and FM, respectively, and a memory 6 to store each frequency data and the data on the district names where broadcasting stations which transmit wave signals at that frequency are arranged are stored in pairs as a table. Also a control circuit 5 selects the receiving channels of the receivers l to 4 sequantially, detects the receiving frequencies of each TV wave and radio wave, and calculates the arranged district names of the broadcast stations according to the detected receiving frequencies as positional information from the table. As a result, positioning confirmation can be made with a simple and economical constitution of the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position confirming device for confirming the position of a corresponding area from the condition of received ambient radio waves.

[0002]

2. Description of the Related Art There is a navigation system used in an automobile or the like as a device of this type for confirming a position by using a radio signal. This navigation system uses C
The map information stored in the D-ROM or the like is displayed on the display, and when the radio signal from the satellite is received, the current position of the device is calculated and displayed in the corresponding map area on the display.

[0003]

However, although such a position confirming device is highly accurate, it is expensive, and there is a demand for the development of a device capable of inexpensively confirming the position. Therefore, an object of the present invention is to construct a position confirmation device at low cost.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a radio wave signal receiving means in a position confirming device for receiving a radio wave signal of the surroundings and for confirming a position based on the received radio wave signal. As a broadcast that includes a television radio wave receiver for receiving VHF and UHF television radio waves and a radio radio wave receiver for receiving AM and FM radio radio waves, and that pre-transmits each frequency data and radio wave signal of this frequency. A memory that stores a pair of station placement area data as a table and each reception channel of each receiver are sequentially selected to detect the reception frequency of each television wave and radio wave, and also to detect by referring to the above table. The position information calculating means for calculating the position information by obtaining the arrangement area name data according to the received frequency.
Further, the position information calculating means is adapted to calculate detailed position information based on the level of each reception frequency and the position information when a plurality of reception frequencies are detected. Further, it is provided with position information display means for displaying detailed position information. Further, the position information calculation means is such that, when a plurality of reception frequencies are detected, the reception channel having the highest reception frequency among the reception frequency levels is set in the receiver. Further, the position information calculating means is provided with a receiving unit including each receiver and an audio circuit that extracts an audio signal from signals received by each receiver, a speaker that amplifies the audio signal, and a display unit. When the reception frequency is detected, the reception channel corresponding to the reception frequency is set in the receiver and the setting information is displayed on the display unit.

[0005]

[Function] A TV radio receiver that receives each TV radio wave,
A radio wave receiver for receiving each radio wave is provided, and a memory for storing in advance each frequency data and data of the area name of the broadcasting station which transmits the radio wave signal of this frequency is provided as a table, and the position information calculating means is provided. Selects each reception channel of each receiver in sequence and detects the reception frequency of each television wave and radio wave, and obtains the area name of the broadcasting station corresponding to the detected reception frequency from the table as position information. As a result, the position can be confirmed with a simple and economical structure. Further, the position information calculation means calculates the detailed position information based on the level of each reception frequency and the position information. As a result, the position can be detected accurately. Also,
The position information display means displays detailed position information. As a result, if this device is mounted on a moving body such as a vehicle,
The area name is displayed in sequence with the movement, and it is possible to recognize at a glance which point is moving. Further, the position information calculating means, when detecting a plurality of reception frequencies, sets the reception channel of the highest reception frequency among the levels of these reception frequencies in the receiver.
Therefore, if this device is built in a television receiver or a radio receiver installed in a moving body such as a vehicle,
With the movement, the receiving channel is automatically selected,
You can receive the best broadcast in the area. Further, the position information calculating means sets a reception channel corresponding to the reception frequency in the receiver when the reception frequency is detected, and
This setting information is displayed on the display unit. As a result, if this device is installed in a moving body such as a vehicle instead of the above-described radio receiving device, the receiving channel is automatically selected along with the movement, and it is possible to always receive optimum broadcasting. At the same time, it is possible to confirm which broadcast channel is being received.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the position confirmation apparatus according to the present invention. In the figure, 1 is a television receiver for receiving a VHF television radio signal, 2 is a television receiver for receiving a UHF television radio signal, 3 is a radio receiver for receiving an AM radio signal, and 4 is a A radio receiver for receiving a radio signal for FM. Also, 5 is a CPU
Control circuit composed of, 6 is a memory, 7 is a display, A
T1 to AT4 are antennas provided in the receivers 1 to 4, respectively.

Note that S1 to S4 are channel selection signals for selecting the respective receiving channels of the respective receivers 1 to 4, R
Reference numerals 1 to R4 are reception level signals indicating the levels of the radio wave signals received by the receivers 1 to 4 when the reception channels of the receivers 1 to 4 are selected by the channel selection signals S1 to S4. By the way, in the control circuit 5 of the apparatus of this embodiment, first, the channel selection signal S1 is sent to the television receiver 1.
The reception level signal R1 of the radio wave signal corresponding to the selected reception channel is input sequentially when the reception level signal R1 is equal to or higher than a predetermined threshold value. It is stored in the memory 6 together with the frequency data of the channel.

Next, the control circuit 5 performs the same selection operation as the channel selection for the television receiver 1 on the television receiver 2 to input the reception level signal R2, and the reception level signal R2 is predetermined. If the threshold value is exceeded, the level value of the reception level signal R2 is stored in the memory 6 together with the frequency data of the selected reception channel. further,
The same channel selection operation as that of each of the above-mentioned receivers is performed for each of the radio receivers 3 and 4, and each of the reception level signals R
3 and R4 are input, and if the reception level signals R3 and R4 are equal to or higher than a predetermined threshold value, similarly, the level values of these signals are stored in the memory 6 together with the frequency data of the selected reception channel.

By periodically performing the operation of selecting the receiving channel of each receiver and inputting the receiving level signal as described above, the radio wave of each broadcasting station around which the apparatus of this embodiment is arranged is stored in the memory 6. The frequency data of the signal and the data of the reception level value of this radio signal are stored. On the other hand, as shown in Tables 1 to 3, the frequencies of the radio wave signals transmitted from each television broadcasting station and each radio broadcasting station arranged in each area are generally different in each area. That is, Table 1 shows the radio signal transmission frequency (unit: KH) of each AM radio broadcasting station arranged in each area.
z), Table 2 is a list of radio signal transmission frequencies (unit: MHz) of each FM radio broadcasting station, and Table 3 is a list of radio signal transmission frequencies (unit: MHz) and receiving channel numbers of each VHF television broadcasting station. Shows.

[0010]

[Table 1]

[0011]

[Table 2]

[0012]

[Table 3]

Here, in the other area of the memory 6, each frequency data shown in each of these tables, the receiving channel number and the corresponding broadcasting station name (that is, the area name where the broadcasting station is arranged) are shown. (Regional information) is VHF as a pair of data,
The data is tabulated and stored as table data for each television broadcast of UHF and for each broadcast type of each radio broadcast of AM and FM.

In this case, when the control circuit 5 finishes storing the reception level value of the radio signal received by each of the receivers 1 to 4 and this frequency data in the memory 6, these frequency data and other areas of the memory 6 are stored. Then, the frequency data stored as table data for each broadcast type is collated, and area information corresponding to the matching frequency data is read from each table for each broadcast type. Then, rough area information is obtained from the combination of the respective area information of each table read out, that is, rough position information in units of, for example, prefectures in which the apparatus of this embodiment is arranged, and from this position based on the obtained position information. Receivable frequency data and the like are displayed on the display 7.

As described above, the television receivers 1 and 2 of VHF and UHF and the radio receivers 3 and 4 of AM and FM are provided, and the radio signal transmitted from each broadcasting station arranged in each region is transmitted. Frequency data and area name data for each broadcasting station are set for each TV broadcast of VHF and UHF, and AM and F.
Table data for each M radio broadcast is stored in the memory 6 in advance as table data, and the control circuit 5 controls each receiver 1
When the reception level of the radio signal is obtained by sequentially selecting the receiving channels of 4 to 4, the frequency matching the frequency is searched from the table data described above, and the regions corresponding to the respective frequency data matched as a result of the search. The information is read from the table data, and the position information of the apparatus of this embodiment is obtained based on the combination of the read regional information. As a result, the position information can be obtained with a simple and inexpensive structure.

FIG. 2 is a diagram showing the range of radio waves emitted from broadcasting stations arranged at respective points. In the figure, A, B, and C indicate respective points, and points A, B, and C are respectively provided with broadcasting stations for transmitting AM radio signals, and a, b, and
c indicates the range of radio waves of each broadcasting station. Here, if the apparatus is located at the point P1, only the radio signal of the broadcasting station at the point A is received by the radio receiver 3 of the apparatus. Therefore, the present apparatus can obtain the position information of the point A from the frequency of the radio signal. If the device is located at the point P2, the device receives radio signals from the broadcasting stations at the positions A and B, and the control circuit 5 causes the control circuit 5 to detect the signals at the positions A and B due to the difference in frequency of the radio signals. While recognizing that there is a space between them, rough position information is calculated, and detailed position information between points A and B is calculated from the reception level value of each radio signal.

Further, if the apparatus is arranged at the point P3, the apparatus receives radio signals from the broadcasting stations at the points B and C, and the difference in the frequency of the radio signals and the reception level of the radio signals are considered. The position information between the points B and C can be obtained. That is, since the reception level of the radio signal is inversely proportional to the distance from the broadcasting station, in this case, the reception level from the broadcasting station at the point B is higher than the reception level of the radio signal from the broadcasting station at the point C, The control circuit 5 recognizes from the level difference that the device exists at a position near the point B between the points B and C. Then, the position information according to this level difference is calculated.

Further, if the apparatus is arranged at the point P4, the radio receiver 3 similarly receives the radio signals from the broadcasting stations at the points B and C, and the difference in frequency between the radio signals and the radio signals are received. Similarly, from the reception level of
It can be recognized that the vehicle exists at a position close to the point C between, and the position information is calculated from this level difference. Further, if the device is located at the point P5, only the radio signal of the broadcasting station at the point C is received by the device. Therefore, in the device, the device exists near the point C based on the frequency of the radio signal. It is recognized that they are doing so, and thus the position information can be obtained.

When a radio signal from a broadcasting station is received in this way, the location of the apparatus is roughly determined for each unit of the broadcasting station that transmits the radio signal of that frequency, and the radio signals from a plurality of broadcasting stations are set. Is received, the position information of the present position of the apparatus and the distance from the corresponding broadcasting station is calculated from the difference between the reception levels. Therefore, the position information can be obtained more accurately. The above description is an example of receiving the radio signal from each AM radio broadcasting station. However, after each radio signal from each FM broadcasting station is received by the radio receiver 4 as well, the difference in the reception level is received. From the position information between the broadcasting stations is calculated in the same manner. The same is true when radio wave signals from each of the VHF and UHF television broadcast stations are received via the television receiver 1 and the television receiver 2, respectively. The position information between the broadcasting stations is calculated in the same manner according to the difference in the reception level. The control circuit 5 combines the calculated position information to calculate specific position information (distance information) of how far the apparatus is from each broadcasting station.

That is, the area name according to the distance from each broadcasting station is stored in advance in the memory 6 as a separate table at the municipal level, and the control circuit 5 corresponds to this position information when detailed position information is calculated. The area name to be read is read out and displayed on the display unit 7. As a result, if this device is mounted on a moving body such as a vehicle, the area name is sequentially displayed on the display along with the movement, and it is possible to recognize at a glance which point is moving. . Further, when the detailed position information is calculated, the control circuit 5 makes each selection so as to match the reception channels of the receivers 1 to 4 with the frequency of the radio signal emitted by each broadcasting station having the highest reception level at this point. The signals S1 to S4 are output. As a result, when the present apparatus is mounted on a moving body such as a vehicle and the level of the reception frequency fluctuates with the movement, the optimum receiving channel can always be automatically selected, and the present apparatus is mounted on a television, for example. When built into a receiver or radio receiver,
You can receive the best broadcast.

Next, FIGS. 4 (a) and 4 (c) are perspective views schematically showing the respective front and rear configurations of a car stereo device mounted on an automobile or the like. In the figure, 7A is a display, 8A is a memory switch, 8B is a scan switch, 8C is a band switch, 8D is a registration switch, and 11
Is a selector switch for switching whether or not it is a stereo broadcast, 12
Is an earphone jack.

In such a car stereo device, the band switch 8C can switch between AM radio, FM radio and television broadcasting. Then, when registering a certain reception channel of a certain broadcast, the band switch 8C is switched to a certain broadcast, and the scan switch 8B is pushed down. As shown in FIG. Indicates the channel number, and in the case of radio broadcasting, the channel frequency is sequentially displayed. Here, when registering a desired channel, when a predetermined memory switch of the plurality of memory switches is pressed while pressing the registration switch 8D, a desired reception channel is associated with the memory switch pressed in a predetermined area of the memory. be registered. Then, when the corresponding memory switch is pressed after registration,
The registered reception channel is automatically selected and the desired broadcast is heard.

Next, FIG. 3 is a block diagram showing another embodiment of the present invention, in which the device of the embodiment shown in FIG. 1 is integrated with the car stereo device described above. That is, in FIG.
The same parts as those in FIG. 1 are designated by the same reference numerals, and the difference from FIG. 1 is that, in addition to the display 7 being the display 7A, the memory switch 8A, the scan switch 8B, the band switch 8C and the registration switch 8D described above are used. And a sound circuit 9 for extracting and outputting a sound signal ADO from the signals received by the receivers 1 to 4 and the receivers. An amplifier A for driving the audio signal ADO from the receiver 10 driven by the drive signal DRV from the control circuit 5 and the point where the receiver 10 is provided.
MP is connected and the speaker S is connected to this amplifier AMP.
This is the point where P is connected.

By configuring the apparatus in this way,
The control circuit 5 causes the receiving unit 10 to select a channel by the channel selection signal S, and when the receiving level signal R obtained from the receiving unit 10 is equal to or more than a predetermined value, a selection signal corresponding to the obtained receiving level signal R is selected. The reception channel setting information corresponding to this channel selection signal is automatically displayed in the display unit 7A in the display form as shown in FIG. 4B while being automatically set in the receiving unit 10. As a result, when the above radio receiving device or television receiving device is not installed in a moving body such as a vehicle, if this device is installed in the vehicle, the receiving channel is automatically selected as the vehicle moves. , It is possible to always receive the optimum broadcast and easily confirm which channel the broadcast being received is.

[0025]

As described above, according to the present invention, a television radio wave receiver for receiving each television radio wave and a radio radio wave receiver for receiving each radio radio wave are provided, and each frequency data and this frequency are preliminarily set. The location information calculating means is provided with a memory for storing the area name data of the broadcasting station that transmits the radio wave signal as a table. Since the frequency is detected and the area name of the broadcasting station according to the detected reception frequency is obtained from the table as the position information, the position can be confirmed with a simple and economical structure. Further, since the position information calculating means is configured to calculate the detailed position information based on the level of each reception frequency and the position information, the position can be accurately detected. Also, since detailed position information is displayed, if this device is installed in a moving body such as an automobile, the area name will be displayed accurately in sequence with the movement, and which point is currently moving. It can be recognized at a glance. Further, when a plurality of receiving frequencies are detected, the receiving channel having the highest receiving frequency among these receiving frequency levels is set in the receiver. If it is built into the television receiver or radio receiver installed in, the receiving channel is automatically selected as it moves, and the optimum broadcast for the area can be received.
Further, the position information calculating unit is provided with a receiving unit including each receiver and an audio circuit that extracts an audio signal from signals received by each receiver, a speaker that amplifies the audio signal, and a display unit. When the reception frequency is detected, the reception channel corresponding to this reception frequency is set in the receiver, and
Since this setting information is displayed on the display unit, if the above radio receiving device is not installed in a moving body such as a vehicle, if this device is installed, it will be received as the vehicle moves. A channel is automatically selected so that optimum broadcasting can be always received, and it is possible to easily confirm which broadcasting channel is being received.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a position confirmation device according to the present invention.

FIG. 2 is an explanatory diagram showing a radio signal reception state of the device.

FIG. 3 is a block diagram showing another embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a car stereo device integrated with the device of the other embodiment and a display example of the device.

[Explanation of symbols]

 1, 2 TV receiver 3, 4 Radio receiver 5 Control circuit 6 Memory 7, 7A Display device 8 Reception channel selection operation unit 9 Audio circuit 10 Reception unit AMP amplifier SP speaker S, S1 to S4 Reception channel selection signal R, R1 ~ R4 reception level signal ADO voice signal DRV drive signal

Claims (5)

[Claims] 1. A position confirming device for receiving a radio wave signal in the surroundings and for confirming a position based on the received radio wave signal, comprising a television wave receiver for receiving each of the VHF and UHF television waves as the receiving means of the radio wave signal. , AM and FM
A radio wave receiver for receiving each radio wave, and a memory for storing each frequency data in advance as a table with the area name data of the broadcasting station transmitting the radio wave signal of this frequency as a table; Each channel of the receiver is sequentially selected to detect the reception frequency of each television wave and radio wave, and the location area data corresponding to the detected reception frequency is obtained by referring to the table and calculated as position information. A position confirmation device comprising position information calculation means. 2. The position confirmation apparatus according to claim 1, wherein the position information calculation means calculates detailed position information based on the level of each reception frequency and the position information when a plurality of reception frequencies are detected. A position confirmation device characterized by: 3. The position confirmation device according to claim 2, further comprising a position information display unit that displays the detailed position information. 4. The position confirmation apparatus according to claim 1, wherein the position information calculation means selects a reception channel having the highest reception frequency among the reception frequency levels when the plurality of reception frequencies are detected. A position confirmation device characterized by being set in the receiver. 5. The position confirming device according to claim 1, wherein a receiving unit including each of the receivers and an audio circuit for extracting an audio signal from signals received by each of the receivers, and the audio signal is amplified. When a reception frequency is detected, the position information calculation means sets a reception channel corresponding to this reception frequency in the receiver and displays the setting information on the display part. Position confirmation device characterized in that.