JPH01120133A - Receiver for vehicle - Google Patents

Abstract

PURPOSE:To utilize two reception parts for diversity reception effectively and to enable the combinational reception of a different broadcasting station by selecting a same-station reception mode and a different-station reception mode. CONSTITUTION:In same-station reception mode, a controller 7 controls the tuning frequency of reception parts 2a and 2b to the same value. Then a comparison part 6 compares received signals of outputs A1 and A2 of the reception part 2a with the received signals of outputs B1 and B2 of the reception part 2b to decide which one is in a good reception state. The controller 7 controls a selector according to the decision result to input the outputs in the good reception state to audio parts 4 and 5. In different-station reception mode, the controller 7 controls the selector 3 according to commands from an operation part 8. For example, the output A1 of the reception part 2a is inputted to the audio part 4 and the output B2 of the reception part 2b is inputted to the audio part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicular receiving device, and more particularly to a vehicular receiving device having a diversity receiving function and a multiplex broadcast receiving function.

(Prior Art) As is well known, a diversity receiver for a vehicle is
Some have one receiving section and two antennas, while others have not only an antenna but also two receiving sections.

Furthermore, as is well known, various types of multiplex broadcasting are being considered, including multiplex broadcasting that has already been put into practical use, such as FM SDE broadcasting and audio multiplexed broadcasting for television, and facsimile broadcasting, which is scheduled to be put into practical use in the future.

(Problems to be Solved by the Invention) In the case of a conventional diversity receiving device that has two antennas and two receiving sections, the two receiving sections are always tuned to the same frequency, and the two receiving sections are tuned to the same broadcasting station. Automatic switching is performed to make use of the output signal with better reception status. Therefore, combined reception of separate broadcast stations as described below cannot be performed.

For example, broadcast station MA carries out a multiplex broadcast with classical background music on the main channel and traffic information on the sub-channel, and another broadcast station B.
Suppose that □ is conducting a multiplex broadcast with hops-type background music on the main channel and stock market information on the subchannel. Conventional diversity receiving devices can only receive either broadcasting station A or broadcasting station B, and can receive a combination of classical music on the main channel of broadcasting station A and stock market information on the subchannel of broadcasting station B. I can't.

This invention was made in view of the above-mentioned problems, and its purpose is to provide a receiving device for a vehicle that can perform combined reception of different broadcast stations by effectively utilizing two receiving sections for diversity reception. It's about doing.

(Means for Solving the Problems) A vehicle receiving device according to the present invention includes two receiving sections capable of receiving multiplex broadcasting, two antennas individually provided in both receiving sections, and at least two channels. an output section, a channel selection control means capable of selecting a same station reception mode in which the same station reception mode is received by the both receiving low sections and a different same station reception mode in which different broadcast stations are received; Diversity reception control means for introducing the output signal of the low reception section having a better reception condition into the output section; and the output section for inputting the output signals of the both low reception sections in any combination when in the different reception mode. and an output selection means to be introduced into the system.

(Function) In the above-mentioned different reception mode, one of the two receiving sections receives the multiplex broadcast of broadcast station A, the other receives the multiple broadcast of broadcast station B, and further receives the main channel V reception signal to the broadcast station. is introduced into the above output section, and the subchannel reception signal of broadcasting station B is introduced into the above output section. In this way, combined reception of different broadcast stations becomes possible.

(Embodiment) FIG. 1 shows a schematic configuration of a vehicle receiving device according to an embodiment of the present invention. This embodiment Q device includes two receiving sections 2a and 2b capable of receiving multiplex broadcasts, and dual receiving lower sections 2a and 2.
The two antennas 1a and 1b individually provided on the right channel audio 1.b and the right channel audio 1. A selector 3 that performs switching connections between the audio section 4 and the left channel audio section 5, the outputs of the receiving sections 2a and 2b, and the inputs of the left and right audio sections 4 and 5.
, a comparison section 6 for comparing the reception states of the reception sections 2a and 2b, a controller 7 for controlling the reception device as described below, and an operation section 8 and a display section 9 as a man-machine interface. ing.

The receiving section 2a has two channels of outputs hA1 and A2,
When multiplex broadcasting is being received, one of the following three output modes will be selected.

■Output the main channel received signal to both A1 and A2.

■Output the subchannel received signal to both A1 and A2.

■Output the main channel reception signal to A1, and output the subchannel reception signal to A2.

The controller 7 controls which of these three multiplex output modes is selected according to the settings made by the operation unit 8.

Controller 7 determines which output mode is set.
The receiving section 2b displayed on the display section 9 is the receiving section 2a.
The configuration is exactly the same, and the outputs A1 and A2 of the receiving section 2a correspond to the outputs B1 and B2 of the receiving section 2b-.

When the same station reception mode is selected using the operation unit 8, the controller 7 operates as shown by the flowchart in FIG.

In the same station reception mode, the controller 7
The tuning frequency of 2b is controlled to be the same. When a channel selection operation is performed on the operating section 8, in response, the tuning frequencies of the receiving sections 2a and 2b are equally and simultaneously controlled (step 20).
1 → 202). When the broadcasts received by the receivers 2a and 2b are multiplex broadcasts, the controller 7 equally controls the receivers 2a and 2b to one of the three multiplex output modes ■■■ according to the settings made by the operation unit 8. (Steps 203→204).

Outputs A1 and A2 of the receiving section 2a and outputs B1 and A2 of the receiving section 2b
The same received signal is output to B2, but the outputs A1 and A2
Only one of the outputs B1 and B2 is selected by the selector 3 and introduced into the left and right channel audio sections 4 and 5. Switching control of the selector 3 is performed by a controller 7 according to an output signal from a comparator 6. Comparison unit 6 outputs A
The received signals of outputs B1 and B2 are compared to determine which one has a better reception condition, and the result of the determination is transmitted to the controller 7. The controller 7 controls the selector 3 according to the determination result, and introduces the output of the better reception condition to the audio sections 4 and 5.

For example, if the reception conditions of outputs A1 and A2 are better, output Δ1 is input to right channel audio section 4, and output A2 is input to left channel audio section 5, respectively. The above is the operation of diversity reception control in the same station reception mode.

When the station reception mode is selected on the operation unit 8, the controller 7 operates as shown in the flowchart of FIG.

In the station reception mode, the two receiving sections 2a and 2b are controlled to tune separately. When the operation unit 8 performs a tuning operation for the receiving unit 2a, the controller 7 performs tuning control for the receiving unit 2a in response (steps 301→30).
2). Further, when the operation section 8' performs a tuning operation for the receiving section 2b, the controller 7 performs tuning control for the receiving section 2b (steps 303→304).

Since the receivers 2a and 2b receive different broadcast stations in this way, the aforementioned multiplex broadcast output mode ■■■ is also selected separately for the receivers 2a and 2b (step 305→
306 and steps 307→308).

For example, the receiving unit 2a receives a multiplex broadcast of broadcasting station X,
The main channel was set to be output to A1 and the subchannel to A2, and the receiver 2b was set to receive the multiplex broadcast of broadcasting station Y, and the main channel was set to be output to 81 and the subchannel to 82. shall be. In this station reception mode, the controller 7 controls the connection of the selector 3 in accordance with the command input from the operation unit 8 (step 3
09). For example, the output A1 of the receiving section 2a is introduced into the right channel audio section 4, and the output B of the receiving section 2b is introduced into the right channel audio section 4.
2 is introduced into the left channel audio section 5. In this case, the main channel of the multiplex broadcast from broadcast station In this way, as described above, classical music on the main channel of one broadcasting station and stock market information on the subchannel of another broadcasting station can be combined and listened to at the same time.

(Effects of the Invention) As explained in detail above, in the vehicle receiving device according to the present invention, not only can diversity reception be performed using the two antennas/receiving sections, but also the functions of the two antennas/receiving sections can be You can receive different broadcast stations, including multiplex broadcasts, using the two receivers, and output a combination of the main channel of one multiplex broadcast and the sub-channel of another multiplex broadcast, depending on your preference. Various uses are possible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of a vehicle receiving device according to an embodiment of the present invention, and FIGS. 2 and 3 are flowcharts showing control operations of the receiving device in same-station reception mode and local-station reception mode. be. 1a, 1b... Antenna 2a, 2b... Receiving section 3... Selector 4, 5... Audio section 6... Comparison section 7... Controller 8. ...Operation section 9 ...Display section

Claims (1)

[Claims] (1) Two receivers capable of receiving multiplex broadcasts, two antennas individually installed in both receivers, an output section for at least two channels, and same-station reception in which both receivers receive the same broadcast station. a channel selection control means capable of selecting a mode and a different station reception mode in which different broadcast stations are received, and an output signal of the one with a better reception condition of the two reception sections when in the same station reception mode, to the output section. A receiver for a vehicle, comprising: diversity reception control means for introducing diversity reception control means; and output selection means for introducing output signals of both the reception sections in an arbitrary combination to the output section when in the different station reception mode.