KR930024489A - Screen aspect ratio automatic switching device and method - Google Patents

Abstract

The present invention automatically recognizes the screen aspect ratio (9:16) (3: 4) for each broadcasting method in a TV receiver, and automatically controls the operation of the image processing unit according to the recognition result to suit the 9:16 or 3: 4 screen display. The present invention relates to an automatic screen aspect ratio switching device and a method thereof, and according to the conventional screen aspect ratio switching device, the viewer needs to operate the remote controller key to switch to the corresponding screen mode to improve the inconvenience.

The present invention transmits a predetermined aspect ratio pulse representing the aspect ratio of the current broadcast in the vertical retrace period on the TV transmitting side, and detects this aspect ratio pulse on the TV receiver side to determine the screen aspect ratio of the currently received broadcast and according to the determination result. It automatically controls the image processor to operate in the screen display mode, so that it is convenient for watching TV, and it is applied to the TV receiver.

Description

Screen aspect ratio automatic switching device and method

Since this is an open matter, no full text was included.

1 is a block diagram of a conventional TV receiver, FIG. 2 is a block diagram of a TV receiver according to the present invention, (a) and (b) of FIG. 3 are operation signal timing diagrams of the apparatus of the present invention, and FIG. Flowchart of the screen aspect ratio automatic switching method of the present invention.

Claims (2)

A tuner 1 for channel tuning, an image detector 2 for detecting a video signal from the tuned broadcast signal, an image processor 3 for processing Y / C signals of the detected video signal, and signal processing; An image amplifier (4) for amplifying the video signal, a CPT (5) for displaying the amplified video signal, a deflection section (6) for supplying the CPT (5) deflection current, and a TV function operation. A remote control transmitter 7, a remote control receiver 8 for receiving a remote control signal, a low pass filter 10 for separating a pulse signal within a vertical retrace period from a video signal, and an inverter for inverting and outputting the filtered signal (11) and the pulse signal input from the inverting section (11) within the period of the vertical synchronization pulse input separately from the deflection section (6) to decode the aspect ratio pulse information, and the image processing section (3) according to the decoding result. ) Vertically and horizontally by the microcomputer 12 for controlling the camera to operate in the screen mode. Non-automatic switching device. The TV broadcast transmitter inserts and transmits an aspect ratio pulse with information indicating the screen aspect ratio of the current broadcast in the vertical retrace period, and detects an aspect ratio pulse in the vertical retrace period on the TV receiver side and determines the TV aspect ratio according to the detection. And an aspect ratio automatic switching method of controlling an image processing operation in a corresponding screen display mode according to the determination result. ※ Note: The disclosure is based on the initial application.