TW201404154A - Broadcasting receiving device - Google Patents

Abstract

Disclosed is a broadcasting receiving device. The broadcasting receiving device includes a signal amplifier amplifying a received broadcasting signal; an isolator having one terminal connected to the signal amplifier; and a tuner reproducing the broadcasting signal, wherein the isolator is installed in the tuner.

Description

Broadcast receiving device

The present invention claims priority to Korean Patent No. 10-2012-0070432 filed on July 29, 2012. This is incorporated herein by reference.

The present invention relates to a broadcast receiving apparatus having a noise removing function, and has a function of preventing combustion when an isolator is used.

In general, a tuner can be classified into: a digital tuner for receiving digital broadcast signals; an analog tuner for receiving analog broadcast signals; and a analog/digital tuner for receiving digital bits. Signals and analog broadcast signals. The analog/digital tuner for receiving a digital broadcast signal and an analog broadcast signal, comprising: a surface acoustic wave (SAW) filter, which only allows an input signal that satisfies a surface acoustic wave band of a digital signal to pass, and only The input signal that satisfies the analog sound signal surface acoustic wave band is allowed to pass.

When a TV signal is transmitted through a cable, there is a signal amplifier that is mounted on an external pole to reduce signal loss. Since most of the signal amplifiers are not grounded, the television signal is supplied directly to a tuner via a signal cable. In this example, there is an isolator that is mounted on the outside of the television to protect the television from external shocks. However, due to the potential difference between a power ground (TV) and a signal ground (antenna: external input), the heat generated by the large contact resistance (such as the contact point between the isolator and the tuner) is generated. May cause a fire.

The present embodiment provides a broadcast receiving apparatus in which an isolator is disposed in a tuner to improve the heat generation and combustion conditions.

According to this embodiment, there is provided a broadcast receiving apparatus comprising: a signal amplifier for amplifying a received broadcast signal; an isolator having an end connected to the signal amplifier; and a tuner for reproducing the broadcast signal, Wherein the isolator is disposed in the tuner.

According to this embodiment, it is possible to prevent a fire caused by a signal line (short circuit).

Moreover, according to the present embodiment, it can reduce signal loss in order to improve its electrical properties and reliability.

Further, according to the present embodiment, the isolator is disposed in the tuner, so that the influence of the external signal can be reduced.

10‧‧‧ cable

20‧‧‧Signal Amplifier

30‧‧‧Isolator

40‧‧‧TV receiver

50‧‧‧ Tuner

100‧‧‧ cable

200‧‧‧Signal Amplifier

300‧‧‧Isolator

310‧‧‧ first

320‧‧‧Second

400‧‧‧TV

500‧‧‧ Tuner

A‧‧‧Contacts

C1‧‧‧First Capacitor

C2‧‧‧second capacitor

FIG. 1 illustrates a broadcast receiving apparatus according to the related art, including: an isolator.

2 is a solid diagram of a combustion phenomenon of a tuner according to one of the related art.

FIG. 3 is a functional block diagram of a broadcast receiving apparatus according to the embodiment.

FIG. 4 is a structural diagram of an isolator according to the embodiment.

Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Further embodiment details are also included in the detailed description of the following figures. The advantages, the appearance, and the method of obtaining these advantages, as well as the characteristics of the present disclosure, will be explained in detail in accordance with the related art of these embodiments in conjunction with the following drawings.

FIG. 1 illustrates a broadcast receiving apparatus according to the related art, including: an isolator.

In general, the broadcast receiving apparatus includes: a cable 10 for transmitting a signal; a signal amplifier 20 for amplifying a signal transmitted through the cable 10; an isolator 30. A DC component for blocking the output signal from the signal amplifier 20; a tuner 50 connected to the isolator 30; and a television set 30 including the tuner 50.

Regarding the different TV reception environments in different countries in the world, in some countries in central Africa or in Asia, the power supply and grounding conditions are not stable. In this case, power may occasionally flow into the ground, or the ground may temporarily fail.

If a commercial television receiver 40 is used in the above environment, a power supply noise will not be removed through the ground, but directly into the tuner 50 of the television set 40, such that the tuner 50 or even the entire television set 40 The system may be damaged.

In order to prevent damage to the system due to power noise, the isolator can be inserted between the ground wire of the antenna or cable and the ground of the TV system, and the antenna or cable is the input of the broadcast signal.

The isolator 30 can include an inductor for blocking the flow of AC components to limit a power supply noise.

However, if the isolator 30 is used, although there is no problem when the broadcast signal strength is sufficient, horizontal and/or diagonal noise is generated when the broadcast signal strength is weak.

Moreover, since the impedance of the isolator 30 and the heat generated by the impedance of the contact portion A between the isolator 30 and the tuner 50 are concentrated, the circuit device of the tuner 50 may be burnt.

2 is a solid diagram of a tuner combustion phenomenon according to the related art. As shown in FIG. 2, the connection portion A between the isolator 300 and the tuner 500 is severely damaged. When a signal is transmitted through the cable 10, loss is caused. Even if the amplifier 20 is used, a potential difference is generated due to the grounding problem, and an induced electromotive force is increased with the length of the signal line, so that noise is generated. Therefore, the contact portion A located between the isolator 30 and the tuner 50 may be burnt. Therefore, the stability of the broadcast receiving apparatus and the durability of the television set 40 will deteriorate.

FIG. 3 illustrates a broadcast receiver device according to an embodiment, including: an isolator. FIG. 4 illustrates an isolator structure in accordance with an embodiment.

As shown in FIG. 3, according to the embodiment, the broadcast receiving apparatus including an isolator includes: a cable 100, a signal amplifier 200, and a television set 400. And, that The television 400 includes a tuner 500 and an isolator 300 disposed within the tuner 500.

The cable 100 may be composed of a plurality of cable wires and connected to the signal amplifier 200. A voltage and signal can be input to the signal amplifier 200 through the cable 100.

The tuner 500 includes an isolator 300 mounted therein. A voltage output from the amplifier 200 is applied to the signal of the tuner, which can be input to the isolator 300 through the cable.

The isolator 300 includes a first crucible 310 and a second crucible 320. The first buffer 310 is coupled to the signal amplifier 200 such that the first buffer 310 can receive a signal; and a second buffer 320 is coupled to the tuner 500 such that the second buffer 320 can transmit a signal.

A capacitor can be coupled between the first turn 310 and the second turn 320. The capacitor is composed of a plurality of capacitors. As shown, the capacitor can include a first capacitor C1 and a second capacitor C2.

The first capacitor C1 is connected between the first crucible 310 and the second crucible 320. The connection line connecting the first 埠 310 to the second 埠 320 is used as a signal line, and the first capacitor C1 can prevent the signal line from burning. A high voltage capacitor can be used as the first capacitor C1. A plurality of capacitors are connected in parallel to each other to constitute a first capacitor C1.

The second capacitor C2 has two end points connected to a plurality of wires, and the first turn 310 and the second turn 320 are connected to the ground via the wires. The impedance of the second capacitor approaches 0 Ω, that is, since the second capacitor C2 is regarded as a short circuit, one of the signal losses transmitted through the signal line can be reduced. In other words, as the capacitance value of the second capacitor C2 increases, or the number of capacitors connected in parallel with each other increases, the total capacitance value increases to bring the impedance closer to 0 Ω.

As explained above, the isolator 300 is mounted in the tuner 500 so that the impedance can approach 0 Ω, thereby improving electrical and reliability.

Moreover, since the isolator 30 is mounted in the tuner, noise due to an external signal can be reduced.

In the present specification, any reference to "an embodiment", "an embodiment", "an example embodiment" or the like means that a particular aspect, structure, or characteristic relating to an embodiment is included in an embodiment of the invention. . These terms do not appear in different places in the manual. It must be related to the same embodiment. Further, when a particular aspect, structure, or characteristic is described in connection with any one embodiment, it is a technical scope of the present embodiment to indicate the particular shape, structure, or characteristics of other embodiments to those skilled in the art. .

100‧‧‧ cable

200‧‧‧Signal Amplifier

300‧‧‧Isolator

400‧‧‧TV

500‧‧‧ Tuner

Claims (8)

A broadcast receiving apparatus comprising: a signal amplifier for amplifying a received broadcast signal; an isolator having an end connected to the signal amplifier; and a tuner for reproducing the broadcast signal, wherein the isolator is mounted Inside the tuner. The broadcast receiving device of claim 1, further comprising: a first port connected to the signal amplifier; and a second port connected to the tuner. The broadcast receiving device of claim 2, further comprising: a first capacitor located between the first turn and the second turn. The broadcast receiving device of claim 3, wherein the first turn and the second turn are connected to a ground. The broadcast receiving device of claim 4, further comprising: at least one second capacitor having two end points connected to the plurality of wires, wherein the first turn and the second turn pass through the wires Connect the ground terminal. The broadcast receiving device of claim 5, wherein the plurality of the second capacitors are connected in parallel. The broadcast receiving device of claim 5, wherein the isolator blocks a power supply noise. The broadcast receiving device of claim 6, wherein the isolator comprises: an inductor for preventing an AC component from passing.