JPH04114269U - television receiver - Google Patents

Abstract

(57) [Summary] [Purpose] By simply connecting the ghost removal device that is connected to the system externally to the video signal input/output terminal of the television receiver, the signal path with the ghost removal device can be easily switched to improve operability. We aim to improve this. [Configuration] Video signal output terminal 6 for the tuner unit 1 output video signal to ghost removal device 15 and ghost removal device 15
A video signal input terminal 7 is provided for the video signal, and switch circuits 5 and 8 each having a plurality of contacts are added to the input and output terminals 6 and 7 for the video signal, respectively, and a phono pin plug for connection from the ghost removal device 15 is inserted. It is characterized in that the switch circuits 5 and 8 are switched to the terminal a side to select the input/output signal path with the ghost removal device 15.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

For video-related equipment such as Clear Vision EDTV, it is necessary to connect it to an external device for higher image quality. Connecting terminal with switch circuit for unit equipment to eliminate ghosts caused by related.

0002

[Prior art]

An externally connected ghost removal unit uses the tuner built into the TV receiver. Dedicated video input/output terminals are required to operate knitting equipment, and ghost removal is required. Each time a ghost removal device is connected, the signal path to the device and the signal path for processing inside the receiver are Switching must be done using a manual switch, etc., which poses a problem with operability.

0003

[Problem that the idea aims to solve]

This invention was made in view of the above conventional example. Simply connect the unit equipment to the dedicated video signal input/output terminal of the TV receiver. It is possible to improve operability by switching the signal path to the ghost removal device. aimed to.

0004

[Means to solve the problem]

This invention is designed to convert the tuner output video signal to an externally connected ghost removal device. An output terminal and a video signal input terminal from the ghost removal device are provided, and the same video signal input terminal is provided. Switch with one circuit and multiple contacts for each signal output terminal and video signal input terminal The same can be achieved by adding a circuit and inserting a phono pin plug for connection from the ghost removal device. Selecting the input/output signal path with the ghost removal device by switching the switch circuit. It is characterized by

[0005]

[Effect]

As shown in FIG. 1, a television signal reception tuner section 1, an amplifier 2, a switch circuit 5 , video signal output terminal 6 to externally connected ghost removal device 15, same ghost removal device Video signal input terminal 7 from 15, input video signal switch circuit 8, video signal processing section Consisting of 11, video output terminal 6, switch circuit 5, video input terminal 7 and switch Circuit 8 is a phono pin terminal shown in Fig. 2(a), and a ghost is connected to the phono pin terminal. When the phono pin plug shown in Figure 2(c) from the removal device 15 is connected, the switch circuit Both paths 5 and 8 are switched to the terminal a side, and the input/output signal path with the ghost removal device 15 is established. select.

[0006]

【Example】

Clear Vision EDTV is characterized by the fact that it is mixed into the received signal and input, which impairs high picture quality. It is possible to remove ghost signals. For this purpose, we installed video signal input/output terminals and installed an external ghost removal unit ( Ghost canceller (GCR) equipment can be connected to the system. 1 in Figure 1 is a TV signal receiving tube with 16 outputs of video signals that inputs antenna terminal 12. The tuner section 2 is an amplifier that outputs the video signal 16 output from the tuner section at a specified level value of 2Vp/p. 3 is a 75Ω matching resistor, 4 is a 470 to 1000pF coupling capacitor, 5 is normal The switch circuit set on the terminal b side, 6 is the common terminal c output of the same switch circuit 5. 7 is the video signal output terminal for the externally connected device 15, and 7 is the video signal input terminal for the externally connected device 15. 8 is normally set to terminal b side to select video signal 16 of tuner section 1 output. Switch circuit with common terminal c output, 9 is 75Ω terminating resistor of the same switch circuit output, 10 is Coupling capacitor, 11 is video signal processing circuit, 15 is video signal mixed with ghost signal An external system having an input terminal 13 and a video signal output terminal 14 from which ghost signals have been removed. This is a ghost removal unit device connected to the system.

[0007] Figure 2 (a) consists of the video signal output terminal 6 and the switch circuit 5 terminals a, b, and c. A phono pin for video signal output that switches terminal b to terminal a by pressing the support piece 18. Terminal section, similarly video signal input terminal 7 and switch circuit 8 terminals a, b, c, etc. A phono pin terminal section for inputting a video signal is shown in which the curved terminal b is switched to the terminal a. Figure 2(c) shows the input terminal 13 and output terminal 14 of the externally connected ghost removal device 15. Signal pin 17 inserted into video signal output terminal 6 and video signal input terminal 7, ground circuit section A phonopin plug with E structure is shown. Figure 2(b) shows the phono pin plug in Figure 2(c) connected to the phono pin plug in Figure 2(a). The state shown is that the common terminal c is inserted into the terminal part 6/7, and by pressing the support piece 18, the common terminal c is connected to the terminal a. Choose a side. That is, in normal times when the ghost removal device 15 is not used, the switch circuits 5 and 8 are Connecting terminal c selects the terminal b side and sends the video signal 16 output from the tuner section 1 as a video signal. input to the number processing unit 11. In addition, when the ghost removal device 15 is connected, the common terminal of the switch circuits 5 and 8 By selecting the terminal a side of the child c, the video signal output terminal 6 and the video signal input terminal are connected. Select the signal path to the ghost removal device 15 via the power terminal 7 to remove the ghost signal. The removed video signal is input to the video signal processing section 11. As mentioned above, ghost removal equipment 15 can be easily connected by inserting and removing the phono pin plug. Also, connect the phono to either the video signal output terminal 6 or the video signal input terminal 7. Even if a pin plug is inserted, the signal path will be disconnected and there will be no video, so please do not use a phono pin plug. It is also possible to prevent forgetting to remove the lug.

[0008]

[Effect of the idea]

As described above, the present invention is an externally connected ghost removal device for the video signal output from the tuner section. It also has a video output terminal for the Each video output terminal and video input terminal has a switch circuit function, and The same switch circuit can be switched by inserting a phono pin plug for connection from the removal device. Improved operability by easily selecting the input/output signal path to and from the ghost removal device. In addition to this, it is also possible to prevent forgetting to remove the phono pin plug.

[Brief explanation of drawings]

FIG. 1 is a switching circuit diagram of a video input/output terminal for an externally connected ghost removal device.

2 is a diagram of a phono pin terminal and a phono pin plug for video signal input/output having the switch circuit function of FIG. 1; FIG.

[Explanation of symbols]

1 Tuner part 2 Amplifier 5 Switch circuit 6 Video signal output terminal 7 Video signal input terminal 8 Switch circuit 11 Video signal processing section 15 Ghost removal equipment

Claims (2)

[Scope of utility model registration request] Claim 1: In a television receiver or the like having a video signal input terminal and a video signal output terminal of a ghost removal unit device connected to the outside, the video signal output from the tuner section is connected to an amplifier that outputs the video signal at a specified level voltage. , the output of the amplifier is connected to a video signal output terminal and a first video signal input terminal to the ghost removal device via a resistor and a first capacitor.
The video signal input terminal from the ghost removal device is connected to the other terminal of the first switch circuit, and the common terminal of the first switch circuit is connected to a resistor. It is grounded and connected to the video signal processing unit via a second capacitor, and the switch circuit is switched by connecting the phono pin plug for the input/output signal from the ghost removal device to select the input/output signal path with the ghost removal device. A TV receiver. 2. The first capacitor output is connected to one terminal of the first switch circuit and also to one terminal of a second switch circuit for outputting a video signal, and the output of the second switch circuit is connected to one terminal of the first switch circuit. 2. The television receiver according to claim 1, wherein the common terminal is connected to a video signal output terminal to a ghost removal device.