Video signal recording apparatus, video signal reproducing apparatus and video signal recording and reproducing apparatus

Abstract

An information signal is received, which includes a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents. A video signal is encoded per plurality of several video frames, the video signal including the main information content signal and the CM portion signal. The encoded video signal is recorded in a storage medium. The video signal is reproduced, during the recording, from the storage medium while the CM portion signal is skipped. The received main information content signal and CM portion signal are recorded in the storage medium. The information mode discriminating signal is recorded in the storage medium or another temporary storage medium. At least the information mode discriminating signal is retrieved from the storage medium or the temporary storage medium. Locations of the recorded CM portion signal in the storage medium is detected based on information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal. The main information content signal is reproduced from the storage medium while skipping the CM portion signal based on recorded positions of the video signal encoded per plurality of video frames corresponding to the detected locations of the recorded CM portion signal.

What is claimed is:  
     
         1 . A video signal recording apparatus comprising: 
 a video signal recorder for receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents, encoding a video signal per plurality of video frames, the video signal including the main information content signal and the CM portion signal, and recording the encoded video signal in a storage medium so that the CM portion signal is skipped when the video signal is reproduced from the storage medium;    a signal recorder for recording the received main information content signal and CM portion signal in the storage medium and recording the information mode discriminating signal in the storage medium or another temporary storage medium;    a signal retriever for retrieving at least the information mode discriminating signal from the storage medium or the temporary storage medium;    a detector for detecting locations of the recorded CM portion signal in the storage medium based on information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal; and    a management data recorder for recording recorded position management data in the storage medium, the recorded position management data including data on the detected positions of the CM portion signal, data on video signal-recorded positions based on recorded positions of the video signal encoded per plurality of several video frames.    
     
     
         2 . A video signal recording and reproducing apparatus comprising: 
 a video signal recorder/reproducer for receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents, encoding a video signal per plurality of several video frames, the video signal including the main information content signal and the CM portion signal, recording the encoded video signal in a storage medium, and reproducing the video signal, during the recording, from the storage medium while the CM portion signal is skipped;    a signal recorder for recording the received main information content signal and CM portion signal in the storage medium and recording the information mode discriminating signal in the storage medium or another temporary storage medium;    a signal retriever for retrieving at least the information mode discriminating signal from the storage medium or the temporary storage medium;    a detector for detecting locations of the recorded CM portion signal in the storage medium based on information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal; and    a reproduction controller for reproducing the main information content signal from the storage medium while skipping the CM portion signal based on recorded positions of the video signal encoded per plurality of video frames corresponding to the detected locations of the recorded CM portion signal.    
     
     
         3 . A video signal reproducing apparatus for reproducing a video signal obtained by receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents, encoding a video signal per plurality of video frames, the video signal including the main information content signal and the CM portion signal, recording the encoded video signal in a storage medium, recording the information mode discriminating signal in the storage medium or another temporary storage medium; retrieving the information mode discriminating signal from in the storage medium or the temporary storage medium, and recording data on locations of the CM portion signal obtained based on an information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal in the storage medium or the temporary storage medium, the apparatus comprising: 
 a reproducer for reproducing the main information content signal from the storage medium while skipping the CM portion signal based on the data on locations of the CM portion signal that is retrieved from the storage medium or the temporary storage medium;    a CM-skipping setter for setting a CM-skipping function so that the CM portion signal is automatically skipped while the main information content signal is reproduced from the storage medium; and    a reproduction controller for reproducing the main information content signal at a set reproduction speed while skipping the CM portion signal even if the set reproduction speed is different from a standard speed based on the data on locations of the CM portion signal when the CM-skipping function is set.    
     
     
         4 . The video signal reproducing apparatus according to  claim 3  wherein both the main information content signal and the CM portion signal are reproduced when the set reproduction speed is higher than a specific speed without skipping the CM portion signal even if the CM-skipping function is set.  
     
     
         5 . A video signal reproducing apparatus for reproducing a video signal obtained by receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents, encoding a video signal per plurality of video frames, the video signal including the main information content signal and the CM portion signal, recording the encoded video signal in a storage medium, recording the information mode discriminating signal in the storage medium or another temporary storage medium; retrieving the information mode discriminating signal from in the storage medium or the temporary storage medium, and recording data on locations of the CM portion signal obtained based on an information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal in the storage medium or the temporary storage medium, the apparatus comprising: 
 a reproducer for reproducing the main information content signal from the storage medium while skipping the CM portion signal based on the data on locations of the CM portion signal that is retrieved from the storage medium or the temporary storage medium;    a skip reproduction controller for controlling the reproduction of the video signal while skipping a portion of the video signal for a given reproducing time; and    a reproduction controller for detecting a starting point of the video signal for next reproduction based on the data on locations of the CM portion signal when the portion of the video signal is skipped and controlling the reproduction to perform at a starting point of the main information content signal when detected starting point of the video signal is at least either a point of a signal that follows the main information content signal that starts after the CM portion signal has been finished or a point that comes during a period of the CM portion signal and also of a signal followed by the main information content signal.    
     
     
         6 . A method of recording a video signal comprising the steps of: 
 receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents;    encoding a video signal per plurality of video frames, the video signal including the main information content signal and the CM portion signal;    recording the encoded video signal in a storage medium so that the CM portion signal is skipped when the video signal is reproduced from the storage medium;    recording the received main information content signal and CM portion signal in the storage medium and recording the information mode discriminating signal in the storage medium or another temporary storage medium;    retrieving at least the information mode discriminating signal from the storage medium or the temporary storage medium;    detecting locations of the recorded CM portion signal in the storage medium based on information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal; and    recording recorded position management data in the storage medium, the recorded position management data including data on the detected positions of the CM portion signal, data on video signal-recorded positions based on recorded positions of the video signal encoded per plurality of several video frames.    
     
     
         7 . A method of recording and reproducing a video signal comprising the steps of: 
 receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents;    encoding a video signal per plurality of several video frames, the video signal including the main information content signal and the CM portion signal;    recording the encoded video signal in a storage medium;    reproducing the video signal, during the recording, from the storage medium while the CM portion signal is skipped;    recording the received main information content signal and CM portion signal in the storage medium and recording the information mode discriminating signal in the storage medium or another temporary storage medium;    retrieving at least the information mode discriminating signal from the storage medium or the temporary storage medium;    detecting locations of the recorded CM portion signal in the storage medium based on information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal; and    reproducing the main information content signal from the storage medium while skipping the CM portion signal based on recorded positions of the video signal encoded per plurality of video frames corresponding to the detected locations of the recorded CM portion signal.    
     
     
         8 . A method of reproducing a video signal obtained by by receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents, encoding a video signal per plurality of video frames, the video signal including the main information content signal and the CM portion signal, recording the encoded video signal in a storage medium, recording the information mode discriminating signal in the storage medium or another temporary storage medium; retrieving the information mode discriminating signal from in the storage medium or the temporary storage medium, and recording data on locations of the CM portion signal obtained based on an information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal in the storage medium or the temporary storage medium, the method comprising the steps of: 
 reproducing the main information content signal from the storage medium while skipping the CM portion signal based on the data on locations of the CM portion signal that is retrieved from the storage medium or the temporary storage medium;    setting a CM-skipping function so that the CM portion signal is automatically skipped while the main information content signal is reproduced from the storage medium; and    reproducing the main information content signal at a set reproduction speed while skipping the CM portion signal even if the set reproduction speed is different from a standard speed based on the data on locations of the CM portion signal when the CM-skipping function is set.    
     
     
         9 . The method according to  claim 8  wherein both the main information content signal and the CM portion signal are reproduced when the set reproduction speed is higher than a specific speed without skipping the CM portion signal even if the CM-skipping function is set.  
     
     
         10 . A method of reproducing a video signal obtained by receiving an information signal including a main information content signal carrying the contents of the information, a CM portion signal carrying commercial messages (CM) and an information mode discriminating signal used for discriminating information modes of the main information content signal and the CM signal from each other according to the contents, encoding a video signal per plurality of video frames, the video signal including the main information content signal and the CM portion signal, recording the encoded video signal in a storage medium, recording the information mode discriminating signal in the storage medium or another temporary storage medium; retrieving the information mode discriminating signal from in the storage medium or the temporary storage medium, and recording data on locations of the CM portion signal obtained based on an information mode corresponding to the CM portion signal among a plurality of information modes discriminated by means of the information mode discriminating signal in the storage medium or the temporary storage medium, the method comprising the steps of: 
 reproducing the main information content signal from the storage medium while skipping the CM portion signal based on the data on locations of the CM portion signal that is retrieved from the storage medium or the temporary storage medium;    controlling the reproduction of the video signal while skipping a portion of the video signal for a given reproducing time; and    detecting a starting point of the video signal for next reproduction based on the data on locations of the CM portion signal when the portion of the video signal is skipped and controlling the reproduction to perform at a starting point of the main information content signal when detected starting point of the video signal is at least either a point of a signal that follows the main information content signal that starts after the CM portion signal has been finished or a point that comes during a period of the CM portion signal and also of a signal followed by the main information content signal.