| 摘要 |
A computer-based method of monitoring and recording user interaction with a video service device is provided. The video service device is connected to a display. The computer is programmed to monitor and selectively record information received from the video service device, a video camera, and a remote control signal detector. The computer-based method includes, over a period of time, detecting a plurality of remote control signals indicative of button clicks, grabbing first video frames from the video service device, and grabbing second video frames from the video camera. The detected remote control signals, the first video frames, and the second video frames are recorded to the storage medium as a sequence of events while preserving the time relationship among the various events with respect to each other thereby establishing a common time base for the recorded sequence of events.
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