Channel changer in a video processing apparatus and method thereof

Abstract

A video processing apparatus, comprises a signal receiving part receiving a video signal through one of a plurality of channels, a user inputting part in which the channel is selected and inputted by a user, a video processing part processing the video signal received by the signal receiving part, and a controller controlling the signal receiving part to start receiving a video signal through a first channel upon the first channel selection among the plurality of channels by the user, and to start receiving a video signal through a second channel upon the second channel selection among the plurality of channels by the user, wherein the second channel selection is made during the receiving process of the first channel. Thus, the present invention provides a video processing apparatus and a video processing method capable of performing a channel change rapidly to solve the above-described problem.

1 . A video processing apparatus, comprising:
 a user input unit to receive a user input for channel selection;   a signal receiving unit to receive a video signal from one of a plurality of channels in accordance with the user input for channel selection;   a video processing unit to process the video signal received by the signal receiving unit; and   a controller to command the signal receiving unit to receive a video signal from a first channel upon a first user input for channel selection among the plurality of channels and to receive a video signal from a second channel, which is different from the first channel, upon a second user input for channel selection among the plurality of channels,   wherein if the second user input for channel selection is received before the signal receiving unit receives a video signal from a channel in accordance with the first user input for channel selection or if the second user input for channel selection is received while the signal receiving unit receives a video signal from a channel in accordance with the first user input for channel selection or the video processing unit processes the video signal received from the channel in accordance with the first user input for channel selection before the video signal is displayed on a display screen, the controller commands the signal receiving unit to receive a video signal from a channel of the second user input for channel selection so that the video signal from the channel of the second user input for channel selection is displayed on the display screen, and the video signal from the channel of the first user input for channel selection is not displayed on the display screen although the first user input for channel selection is received by the user input unit.   
     
     
         2 . The video processing apparatus according to  claim 1 , wherein the video processing apparatus is a television receiver. 
     
     
         3 . The video processing apparatus according to  claim 2 , wherein said television receiver further comprises the display screen. 
     
     
         4 . The video processing apparatus according to  claim 2 , wherein said television receiver is a cable broadcast receiver. 
     
     
         5 . The video processing apparatus according to  claim 2 , wherein the start of receiving of the video signal from the channel of the second user input for channel selection occurs before a start of display of OSD indicating the first channel. 
     
     
         6 . The video processing apparatus according to  claim 1 , wherein if the second user input for channel selection is received within a predetermined reference time from the time when the first user input for channel selection was received and tuning to the first channel is not completed, the second user input for channel selection is ignored,
 wherein if the tuning to the first channel is completed within the predetermined reference time, the start of receiving the video signal from the channel of the second user input for channel selection occurs when the second user input for channel selection is received after the tuning to the first channel is completed, and   wherein if the tuning to the first channel is not completed within the predetermined reference time, the start of receiving the video signal from the channel of the second user input for channel selection occurs upon the second user input for channel selection after the predetermined reference time has passed.   
     
     
         7 . The video processing apparatus according to  claim 6 , wherein the predetermined reference time is equal to at least the time required for an OSD, indicating the first channel, to be displayed on the display screen after the first user input for channel selection. 
     
     
         8 . The video processing apparatus according to  claim 6 , wherein the predetermined reference time is less than the time required for an OSD, indicating the first channel, to be displayed on the display screen after the first user input for channel selection. 
     
     
         9 . The video processing apparatus according to  claim 6 , wherein the predetermined reference time is selectable by the user. 
     
     
         10 . The video processing apparatus according to  claim 9 , wherein the selection of the predetermined reference time is made through an OSD. 
     
     
         11 . The video processing apparatus according to  claim 1 , further comprising an OSD generating unit generating OSD data indicating the channel for the video signal,
 wherein the video processing unit processes the OSD data so that a video based on the OSD data generated by the OSD generating unit can be displayed, and   the controller controls the OSD generating unit and the video processing unit so that a video based on the OSD data corresponding to a channel selected by the user can be displayed.   
     
     
         12 . A video processing method of a video processing apparatus, comprising:
 receiving a user input for channel selection;   receiving a video signal from a first channel upon a first user input for channel selection among a plurality of channels; and   receiving a video signal from a second channel, which is different from the first channel, upon a second user input for channel selection among the plurality of channels,   wherein if the second user input for channel selection is received before the video signal from a channel in accordance with the first user input for channel selection is received or if the second user input for channel selection is received while the video signal from the channel in accordance with the first user input for channel selection is received or while the video signal received from the channel in accordance with the first user input for channel selection is processed before the video signal is displayed on a display screen, the receiving of the video signal from the channel of the second user input for channel selection comprises receiving the video signal from the channel of the second user input for channel selection so that the video signal from the channel of the second user input for channel selection is displayed on the display screen, and the video signal from the channel of the first user input for channel selection is not displayed on the display screen although the first user input for channel selection is received.   
     
     
         13 . The video processing method according to  claim 12 , wherein the video processing apparatus is a television receiver. 
     
     
         14 . The video processing method according to  claim 13 , wherein said television receiver further comprises of the display screen. 
     
     
         15 . The video processing method according to  claim 13 , wherein said television receiver is a cable broadcast receiver. 
     
     
         16 . The video processing method according to  claim 13 , wherein the start of receiving of the video signal from the channel of the second user input for channel selection occurs before a start of display of OSD indicating the first channel. 
     
     
         17 . The video processing method according to  claim 12 , wherein if the second user input for channel selection is received within a predetermined reference time from the time when the first user input for channel selection was received and tuning to the first channel is not completed, the second user input for channel selection is ignored,
 wherein if the tuning to the first channel is completed within the predetermined reference time, the start of receiving the video signal from the channel of the second user input for channel selection occurs when the second user input for channel selection is received after the tuning to the first channel is completed, and   wherein if the tuning to the first channel is not completed within the predetermined reference time, the start of receiving the video signal from the channel of the second user input for channel selection occurs upon the second user input for channel selection after the predetermined reference time has passed.   
     
     
         18 . The video processing method according to  claim 17 , wherein the predetermined reference time is equal to at least the time required for an OSD, indicating the first channel, to be displayed on the display screen after the first user input for channel selection. 
     
     
         19 . The video processing method according to  claim 17 , wherein the predetermined reference time is less than the time required for an OSD, indicating the first channel, to be displayed on the display screen after the first user input for channel selection. 
     
     
         20 . The video processing method according to  claim 17 , wherein the predetermined reference time is selectable by the user. 
     
     
         21 . The video processing method according to  claim 20 , wherein the selection of the predetermined reference time is made through an OSD. 
     
     
         22 . The video processing method according to  claim 12 , further comprising:
 generating OSD data indicating the channel; and   processing the OSD data so that a video based on the generated OSD data can be displayed.