| 摘要 |
A videosignal recording arrangement for recording a videosignal representing pictures having a first or a second aspect ratio (4:3, 16:9) on a record carrier (13) comprises a first terminal (6) for receiving the videosignal for recording on the record carrier (13), recording means (12,15) having an input (11) coupled to the first terminal (6), for recording the videosignal on the record carrier, and a second terminal (10) for receiving in a recording mode of the arrangement a first or a second control signal (0V, 6V) dependent of the videosignal received at the first terminal (6) representing pictures of the first aspect ratio (4:3), or representing pictures of the second aspect ratio (16:9) respectively. Detection means (25) are provided, having an input coupled to the second terminal (10), for detecting the first or the second control signal, so as to enable the recording of the videosignal representing pictures having the first or the second aspect ratio respectively on the record carrier. Viewed in time, the second control signal is such that for repeated concatenations of a first and a second time interval (T1,T2), the second control signal is present during the first time interval (T1) and is absent during the subsequent second time interval (T2), and the detection means are adapted to detect the absence of the second control signal during a time interval which is longer than the second time interval so as to enable the arrangement to switch to a recording of a videosignal representing pictures having the first aspect ratio (4:3). Further, the detection means (25) are adapted to detect the occurrence of the second control signal so as to enable the arrangement to switch to a recording of a videosignal representing pictures having the second aspect ratio (16:9). The invention is equally applicable in a picture display unit (35), so as to determine the aspect ratio of the videosignal to be displayed on the picture screen (39). <IMAGE> |
