Method and apparatus directed to processing trick play video data to compensate for intentionally omitted data

A digital video tape recorder for generating a video data stream, the video data stream including normal play video data output by the video tape recorder during normal video tape recorder playback operation and trick play video data output by the video tape recorder during trick playback operation, the trick play video data including a subset of the normal play video data, the digital video tape recorder comprising:

• a set of heads for reading video data from a tape;
• video data processing means for generating from the data read from the tape the video data stream;
• and
• a video tape recorder command generator circuit for generating a command during video tape recorder trick play operation instructing a receiver of the command to perform video processing on the trick play video data to compensate for normal play video data intentionally omitted from the subset of normal play video data.

A method of operating a digital video tape recorder to generate a digital video data stream, the digital video data stream including normal play video data output by the tape recorder during normal tape recorder playback operation, and trick play video data and trick play video data processing commands output by the tape recorder during trick playback operation, each trick play video data processing command including an instruction for processing the trick play video data, the method comprising the steps of:

• reading data from the tape;
• generating from the data read from the tape the video data stream, the step of generating the video data stream including the steps of:
• i. during trick play tape recorder operation, processing the data read from the tape to identify trick play video data, and outputting the trick play video data, the trick play video data including a subset of normal play video data recorded on the tape;
• and
• ii. generating trick play video data processing commands instructing a device receiving the trick play video data processing commands to perform video processing to compensate for normal play video data intentionally omitted from the subset of normal play video data output by the tape recorder during trick play operation.

A video playback device for generating a video data stream, the video data stream including normal play video data output by the video playback device during normal video playback device operation and trick play video data output by the video playback device during trick playback operation, the trick play video data including a subset of the normal play video data, the video playback device comprising:

• a head for reading video data from a data storage device;
• a video data processing circuit coupled to the head for generating from the data read from the data storage device the video data stream;
• and
• a command generator circuit for generating a command during trick playback operation instructing a receiver of the command to perform video processing on the trick play video data to compensate for normal play video data intentionally omitted from the subset of normal play video data.

A method of operating a digital video playback device to generate a digital video data stream from stored digital data, the digital video data stream including normal play video data output by the digital video playback device during normal playback operation, and trick play video data and a trick play video data processing command output by the video playback device during trick playback operation, the method comprising the steps of:

• generating, from the stored digital data, the video data stream, the step of generating the video data stream including the steps of:
• i. during trick playback operation, processing the stored digital data to identify trick play video data, and outputting the trick play video data, the trick play video data including a subset of normal play video data;
• and
• ii. generating a trick play video data processing command instructing a device receiving the trick play video data processing command to perform video processing to compensate for normal play video data intentionally omitted from the subset of normal play video data output by the video playback device during trick play operation.

A method of receiving and processing video data output by a digital video playback device, the digital video playback device outputting a video data stream including normal play video data during normal playback operation, and trick play video data and a trick play video data processing command during trick play operation, the trick play video data including a subset of the normal play video data, the method comprising the steps of:

• receiving the trick play video data including the subset of normal play video data output by the video playback device during trick play operation;
• receiving the trick play video data processing command output by the video playback device during trick playback operation;
• and
• performing video data processing on the received subset of normal play video data, in response to the received trick play video data processing command to compensate for the intentional omission of normal play video data by the video playback device, from the received subset of normal play video data.

A digital video system for generating and displaying a digital video data stream, the digital video data stream including normal play video data during normal video playback operation and trick play video data during trick playback operation, the trick play video data including a subset of the normal play video data, the digital video system comprising:

• means for reading video data from a data storage device;
• a video data processing circuit for generating from data read from the data storage device the digital video data stream;
• a command generator circuit for generating a command during video trick playback device operation instructing a receiver of the command to perform video processing on the trick play video data to compensate for normal play video data intentionally omitted from the subset of normal play video data;
• and
• a trick play data processing circuit coupled to the video data processing circuit and the command generator circuit, for receiving the digital video data stream and command, and for performing a video data processing operation on the trick play video data, in response to the command, to compensate for the absence of normal play video data intentionally omitted by the video playback device from the subset of normal play video data included in the trick play video data.