JPH09322082A - Reception method and receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily select a channel number without depending on reception sensitivity and to continuously receive the same broadcasting while moving by taking out the channel number and tuning data corresponding to the transmission station of the same group from a group data base based on a position number whose computed electric field strength is strong. SOLUTION: A moving position is detected from the reception data 81 received by a GPS means 8 by GPS satellite waves 9. An arithmetic means 7 obtains the position of the transmission station of ground waves nearby by retrieving a position data base 6 and calculates the electric field strength. The position number 71 whose calculated electric field strength is strong is sent to a control means 4 and the channel number 31 of the same group as a broadcasting station during reception at present is retrieved from the group data base 3 based on the obtained number 71. Then, the means 4 retrieves the matching tuning data 51 from a tuning data base 5 based on the channel number 31 obtained from the data base 3 and the position number 71, and a tuner 2 reproduces broadcasting waves 1 based on the data 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving receiver, and more particularly to a receiver and a receiver for presetting a receiver frequency and a receiver for setting the receiver frequency according to the electric field strength of a broadcast wave. Regarding the device.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional receiving device such as a television receiver has a format in which a desired channel number is selected from a plurality of preset channel numbers and the reception sensitivity of a broadcast wave 1 is good. There is a format in which the channel number is selected according to the desired frequency, and a new setting and resetting operation of the channel number are sequentially required as the device moves.

For setting the channel number, the setter or the receiving device scans the channel numbers in order, the channel numbers of the broadcast waves 1 received are sequentially stored and set in the internal storage means, and the tuner 2 receives them. The sensitivity of the broadcast wave 1 is sent to the control means 104 as the reception sensitivity signal 11, and the control means 104 selects the tuning data 151 from the tuning means 105 based on the magnitude of the reception sensitivity signal 11 and sends it to the tuner 2. Then, the tuner 2 reproduces the broadcast wave 1.

Therefore, the control means 104 determines the optimum reception frequency by increasing or decreasing the tuning data 151 until the reception sensitivity signal 11 reaches the optimum position, and the optimum reception frequency thus determined is determined. The tuner 2 controls to reproduce the broadcast wave 1.

[0005]

However, in the above-mentioned conventional receiving apparatus, firstly, even if the channel number is set, if the apparatus itself is moved, it cannot receive at the set channel number, and secondly, If the channel number of the receivable broadcasting station changes from time to time due to the movement of the device,
Even if the optimum channel number is not determined and thirdly, the channel number can be selected, it does not necessarily match the channel number of the affiliated broadcasting station, so that there is a problem that the program cannot be continuously captured.

[0006] Therefore, an object of the present invention is to provide a receiving method and a receiving apparatus that facilitates channel number selection without depending on receiving sensitivity and continuously receives the same broadcast while moving.

[0007]

In order to solve the above-mentioned problems, the receiving method of the present invention is based on the longitude, latitude and altitude of the transmitting station where each broadcasting station transmits a broadcast wave by terrestrial waves.
The position data in which the transmission output, the transmission direction, and the directivity are associated with the position number is stored in advance in the position database, and the received data of the longitude, latitude, and altitude of the moving position received by the GSP means from the GPS satellite wave and the position data are used. The electric field strength is calculated by the calculating means, and the channel number corresponding to the transmitting station of the same series from the series database and the tuning data from the tuning database are controlled based on the position number with the strong electric field strength calculated by the calculating means. Means for retrieving the broadcast wave according to the channel number and the tuning data retrieved by the control means.

In order to solve the above-mentioned problems, the receiving device of the present invention has a transmission output based on the longitude, latitude and altitude of a transmitting station where each broadcasting station transmits a broadcast wave by ground wave.
A position database that stores in advance the position data in which the transmission direction and directivity are associated with position numbers, and the GS that receives the received data of the longitude, latitude, and altitude of the moving position from GPS satellite waves.
P means, a calculating means for calculating the electric field strength based on the reception data received by the GSP means and the position data, a tuning database storing channel numbers and tuning data corresponding to the position numbers, and the same sequence The sequence database storing the channel number and the position number for each of the broadcasting stations, and the channel number from the sequence database and the tuning data from the tuning database on the basis of the position number having a strong electric field strength calculated by the calculating means. And a tuner that reproduces the broadcast wave according to the channel number and the tuning data extracted by the control means.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a receiver according to an embodiment of the present invention will be applied to a television receiver and described with reference to the drawings.

FIG. 1 is a block diagram of a receiver according to an embodiment of the present invention.

A receiver according to an embodiment of the present invention is
As shown in FIG. 1, each broadcast station uses the broadcast wave 1
A position database 6 that stores in advance position data 61 in which the transmission output, the transmission direction, and the directivity are associated with the position number 71 based on the longitude, latitude, and altitude of the transmitting station that transmits the GP;
GSP means 8 for receiving the received data 81 of the longitude, latitude, and altitude of the moving position from the S satellite wave 9, and operation means 7 for calculating the electric field strength by the received data 81 and the position data 61 received by the GSP means 8. , A channel selection database 5 that stores channel numbers 31 and channel selection data 51 corresponding to position numbers 71, a sequence database 3 that stores channel numbers 31 and position numbers 71 for each broadcasting station of the same sequence, and computing means 7. On the basis of the position number 71 having a strong electric field strength calculated in step 1, the control means 4 for extracting the channel number 31 from the sequence database 3 and the channel selection data 51 from the channel selection database 5, and the channel number 31 extracted by the control means 4 are used. And broadcast wave 1 by tuning data 51
And a tuner 2 for reproducing.

Next, the operation of the receiving apparatus according to the embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the operation of the receiving apparatus according to the embodiment of the present invention is such that the GPS satellite wave 9 is detected by the GSP means 8 at the latitude A0, the longitude B0 and the altitude C0 of the received data 81. Detected latitude A0, longitude B0, altitude C0
According to the calculation means 7, the position database 6 is searched, and the latitude An and the longitude B of the transmitting station as close as possible to this device
n and altitude Cn are calculated, and the distance between this device and the position of the transmitting station on the position database 6 is calculated by the following formula, and (SQ
RT []: function representing the square root of two) Distance = SQRT [(An-A0) 2+ (Bn-B0) 2+
(Cn-C0) 2]

Further, as shown in the following position database table, the electric field strength is calculated using the output Pn, the direction Vn, and the directivity Sn on the position database 6, and this device and the transmitting station position on the position database 6 are calculated. The electric field intensity can be calculated by setting the angle V0 to V0. (Fp (): output weighting function, fv (): direction weighting function, f
s (): directivity weighting function) electric field strength = distance × fp (Pn) × fv ([Vn−V0])
× fs (Sn)

[0015]

Further, the angle V0 between this device and the position of the transmitting station on the position database 6 is calculated by V0 = Tan ((A0-An) / (B0-Bn)), and the calculated electric field strength is strong. Position number 7
1 is sent to the control means 4, and as shown in the following sequence database table, based on the position number 71 acquired by the control means 4,
The channel number 31 of the same sequence as the currently received broadcasting station is searched from the sequence database 3, and if the corresponding channel number 31 does not exist, the calculating means 7 is again executed.
The position number 71 having a strong electric field intensity is acquired at.

[0017]

After that, the control means 4 controls the channel number 31 and the position number 71 acquired from the sequence database 3.
On the basis of, the matching tuning data 51 is searched from the tuning database 5 as shown in the following tuning database table,
The tuner 2 reproduces the broadcast wave 1 based on the tuning data 51.

[0019]

Although the present embodiment has been described on the premise that the present invention is applied to a television receiver which automatically tracks a television program while moving and automatically sets a channel number, the present invention is not limited to this. Of course, application to a radio receiver, for example, is also possible.

[0021]

As described above, according to the receiving method and the receiving apparatus of the present invention, the broadcast program is automatically tracked, the setting time of the channel number is greatly reduced, and the position change of the apparatus due to the movement and other There is an effect that the channel number can be updated successively without being affected by the radiated radio wave and noise, and the broadcast program can be continuously received by sequentially updating the channel number even in a receiving environment where the electric field strength is weak.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a receiving device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional receiving device.

[Explanation of symbols]

 1 Broadcast wave 2 Tuner 3 Sequence database 4 Control means 5 Channel selection database 6 Position database 7 Computing means 8 GPS means 9 GPS satellite wave 31 Channel number 51 Channel selection data 61 Position data 71 Position number 81 Received data

Claims (2)

[Claims] 1. Position data in which a transmission output, a transmission direction, and directivity are associated with position numbers in advance in a position database based on the longitude, latitude, and altitude of a transmitting station where each broadcasting station transmits a broadcast wave by terrestrial waves. Memorize from GPS satellite wave to GSP
The electric field strength is calculated by the calculating means based on the received data of the longitude, latitude, and altitude of the moving position received by the means, and the position data, and based on the position number having the strong electric field strength calculated by the calculating means, the same sequence is obtained from the series database. The channel number corresponding to the transmitting station and the tuning data from the tuning database are respectively fetched by the control means, and the broadcast wave is reproduced by the channel number and tuning data fetched by the control means. Receiving method. 2. A position in which position data in which transmission output, transmission direction, and directivity are associated with position numbers are stored in advance, based on the longitude, latitude, and altitude of the transmitting station where each broadcasting station transmits a broadcast wave by terrestrial waves. Database and GSP that receives the received data of longitude, latitude and altitude of the moving position from GPS satellite waves
Means, and a computing means for computing the electric field strength based on the received data received by the GSP means and the position data,
A channel selection database that stores channel numbers and channel selection data corresponding to the position numbers, a sequence database that stores channel numbers and the position numbers for each broadcasting station of the same sequence, and an electric field calculated by the calculation means. Based on the position number having high strength, the control means for respectively extracting the channel number and the tuning data from the tuning database and the tuner for reproducing the broadcast wave by the channel number and the tuning data fetched by this controlling means. A receiving device comprising: