KR20000027431A - Analog and digital tv receiver - Google Patents

Abstract

PURPOSE: A method for receiving both digital and analog signals and a digital TV employing the method are disclosed to display both of analog and digital channel signals by providing a digital TV receiving mode, an analog TV receiving mode, and an analog/digital TV mix mode. CONSTITUTION: A digital TV capable of receiving analog and digital signals includes an analog signal receiving/displaying part(100), a digital signal receiving/displaying part(110), and an analog/digital signal receiving/displaying part(120). The analog signal receiving/displaying part(100) receives analog TV signals by tuning an analog signal channel and displays the same. The digital signal receiving/displaying part(110) receives digital TV signals by tuning a digital signal channel, and displays the same. The analog/digital signal receiving/displaying part(120) selectively receives one of the analog and digital signals and displays the same. A select switch(130) is further provided to select one of the receiving/displaying parts(100,110,120).

Description

Analog and digital signal reception digital TV and method

The present invention relates to a digital TV, and more particularly, to an analog and digital signal receiving digital TV and a method capable of receiving an analog TV signal and receiving and displaying a digital TV signal.

A general TV receives an analog broadcast signal and displays it on a 4: 3 aspect ratio screen, which is a standard that matches the broadcast signal format.

Unlike analog TV signals, digital TV signals have a 16: 9 aspect ratio signal format and are difficult to reproduce with digital TV signals. Digital TV signals are superior in image and sound quality to analog TV signals and have many other available characteristics. There may be a digital TV having a function of receiving and reproducing such a digital TV signal, but since the broadcasting methods adopted in each country or region are not digital, the problem is that the digital TV becomes useless in the area where the analog TV signal is broadcast. have.

An object of the present invention is to provide an analog and digital signal receiving digital TV and a method capable of receiving analog TV signals and digital TV signal reception and displaying the received signals according to a corresponding format.

1 is a block diagram illustrating an analog and digital signal receiving digital TV of the present invention.

2 is a flowchart of a signal reception and display method of the digital TV of the present invention.

In order to solve the above problems, an analog and digital signal receiving digital TV includes: first means for tuning an analog signal channel to receive an analog TV signal, process the same, and display the same on a screen; Second means for tuning the digital signal channel to receive the digital TV signal, process it, and display it on a screen; And third means for selectively tuning the analog and digital channels and processing the tuned signals and displaying them on the screen in a manner suitable for each of the analog and digital signals.

It is further preferred to further comprise a selector switch for selecting one of the first, second and third means.

Preferably, the first means displays a 4: 3 aspect ratio when displaying the analog TV signal on the screen.

Preferably, the first means has a panoramic function of imitating a 16: 9 aspect ratio for a received analog signal format of a 4: 3 aspect ratio when displaying an analog TV signal on a screen. Do.

Preferably, the second means displays a 16: 9 aspect ratio when displaying a digital TV signal on a screen.

Preferably, the third means displays the received analog signal on the screen in a 4: 3 aspect ratio when the analog TV signal is tuned and received.

Preferably, the third means has a panorama function that mimics a 16: 9 aspect ratio with respect to the received 4: 3 aspect ratio analog signal format and displays on the screen when the analog TV signal is tuned and received. Do.

When the digital TV signal is tuned and received, the third means preferably displays the received digital signal on the screen in a 16: 9 aspect ratio format.

In order to solve the above problems, a signal reception and display method of a digital TV having an analog TV reception mode, a digital TV reception mode, and a mixed reception mode of an analog and digital TV includes: 1) identifying a current reception mode and broadcasting a signal of a corresponding mode; Tuning only the channel being cast; And 2) displaying the tuned and received TV signal on the screen.

In step 1), the analog signal channel is tuned in the analog TV reception mode, the digital signal channel is tuned in the digital TV reception mode, and the channel selected by the user is selected in the analog and digital TV reception mode. It is preferable to try the analog tuning and the digital tuning respectively to select the tuning method in which the signal is input.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram for explaining an analog and digital signal receiving digital TV of the present invention, the configuration of the part for receiving analog and digital signals in the digital TV, the first means 100, the second means 110, It consists of a third means 120 and the selection switching switch 130. The first means 100 tunes the analog signal channel to receive the analog TV signal, processes it, and displays it on the screen. When the analog TV signal is displayed on the screen by the first means 100, it is displayed as a 4: 3 aspect ratio or 16: 9 aspect ratio for the received 4: 3 aspect ratio analog signal format. It is displayed as a panoramic screen for displaying by imitating the aspect ratio. The second means 110 tunes the digital signal channel to receive the digital TV signal, processes it, and displays it on the screen. When displaying a digital TV signal on the screen, it is displayed as a 16: 9 aspect ratio. Since conventional digital TVs provide 16: 9 aspect ratio screens, the display of digital signals is more advantageous and natural than the display of analog signals. The third means 120 selectively tunes the analog and digital channels, processes the tuned signals, and displays them on the screen in a manner suitable for each of the analog and digital signals. When the analog TV signal is tuned and received, the received analog signal can be displayed on the screen as 4: 3 aspect ratio, or it can mimic 16: 9 aspect ratio for the received analog signal format of 4: 3 aspect ratio. Display on the panorama screen. When the digital TV signal is tuned and received, the received digital signal is displayed on the screen in a 16: 9 aspect ratio format. The selection switching switch 130 is for selecting one of the first means, the second means, and the third means, and the position of the switch is determined by the user.

2 is a flowchart of a signal reception and display method of the digital TV of the present invention, the analog TV reception mode of the first means 100 of FIG. 1, the digital TV reception mode of the second means 110 and the third means of the present invention. In the method of receiving and displaying a signal of a digital TV having a mixed reception mode of analog and digital TV by 120, first, it is determined whether the currently set TV signal reception mode is set (step 200). If the current TV signal reception mode is analog TV reception mode, analog tune the channel selected by the user; if the digital TV reception mode, digital tune the channel selected by the user; if the mixed mode of analog and digital TV reception mode, the user selected channel Analog tuning and digital tuning are attempted for each to fix the tuning method for acquiring the signal (step 210). The tuned and received TV signal is processed according to each method and displayed on the digital TV screen (step 220).

As described above, the digital TV reception mode and the analog TV reception mode are separately provided in the digital TV, and the digital TV signal or the analog TV signal can be received and displayed by selecting the corresponding mode according to the type of broadcast signal. In addition, a mixed analog / digital TV mode can be used to automatically select, receive, and display signals of user analog channels and digital channels regardless of broadcast signal types.

According to the present invention, the digital TV has a digital TV reception mode, an analog TV reception mode, and an analog / digital TV mixed mode, and selectively uses according to the type of broadcast signal, eliminating waste of tuning time, and reducing the analog channel and digital channel signals. You can receive and display all of them.

Claims (10)

First means for tuning an analog signal channel to receive analog TV signals, process them, and display them on a screen; Second means for tuning the digital signal channel to receive the digital TV signal, process it, and display it on a screen; And And third means for selectively tuning the analog and digital channels and processing the tuned signals and displaying them on the screen in a manner suitable for the respective analog and digital signals. The method of claim 1, And a selection switching switch for selecting one of the first means, the second means and the third means. The method of claim 1, wherein the first means, When displaying an analog TV signal on a screen, the analog and digital signal receiving digital TV characterized by displaying in 4: 3 aspect ratio. The method of claim 1, wherein the first means, When displaying an analog TV signal on the screen, the analog and digital signals are characterized by including a panorama function that mimics a 16: 9 aspect ratio for display on the screen for a received 4: 3 aspect ratio analog signal format. Receiving digital TV. The method of claim 1, wherein the second means, A digital TV receiving analog and digital signals, characterized in that when displaying a digital TV signal on a screen, it is displayed with a 16: 9 aspect ratio. The method of claim 1, wherein the third means, When the analog TV signal is tuned and received, the received analog signal is displayed on the screen in a 4: 3 aspect ratio. The method of claim 1, wherein the third means, When the analog TV signal is tuned and received, the analog and digital signal, characterized in that it includes a panorama function to mimic the 16: 9 aspect ratio for display on the screen to the received 4: 3 aspect ratio analog signal format Receiving digital TV. The method of claim 1, wherein the third means, When the digital TV signal is tuned and received, the received digital signal is displayed on the screen in a 16: 9 aspect ratio format. A signal reception and display method of a digital TV having an analog TV reception mode, a digital TV reception mode, and a mixed reception mode of analog and digital TV, 1) determining a current reception mode and tuning only a channel that broadcasts a signal of a corresponding mode; And And 2) displaying the tuned and received TV signal on a screen. The method of claim 9, wherein step 1) comprises: In the analog TV reception mode, the analog signal channel is tuned. In the digital TV reception mode, the digital signal channel is tuned. In the analog and digital TV reception mode, analog tuning and digital tuning are performed for the channel selected by the user. A method of receiving and displaying a signal of a digital TV, characterized in that each attempt is made to select a tuning method for inputting a signal.