Television [technology]
Television is a device that can be viewed simultaneously and sounds. The word television comes from English, originally composed of the ancient Greek word "τῆλε" (from Tale, meaning "far") and the Latin word "Vision" (Vicion, meaning "philosophy"). So television is sometimes called a television instrument in Bengal.
Discovery
The main idea of television is to transmit sound and image pattern through radio waves. Originally made of three technologies, the output of the television: the TV camera whose work is converting the word and image into electro-magnetic signal, the transmitter of which is the function of transmitting this signal via wireless waves and the TV set (receiver) whose job is to accept this signal Converting to previous pictures and words.
Typically camera images can be divided into two parts: still pictures and moving pictures. The movie / video cameras are used for general cameras and movies for the pictures. Actually many films are formed in combination with the pictures. The video camera accepts many pictures at a rapid pace. When these pictures are displayed consistently at the same speed, they are considered to be movies in our eyes. In this frame, it is not easy to change the image of this picture.These scenes can be identified separately if they see the film very slow. Analog TV camera usually sends pixels of these pictures to 525 lines and sends the line by line via radio waves. Simultaneously, the sound waves transmit through a different signal. Photographs and sound signal transmitted to the picture and the sound by taking the TV with antenna / cable / satellite in special way. The ray gamma emitted from the retrieval.
Television classification
Television can be divided into different ways depending on the display or display technology. For example: CRT, Plasma, LCD, LED, etc. Until the broadcast from the broadcast, the entire television footage can be divided into three groups: analog television (traditional method), digital television (DTV) and HDTV.
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