![]() ![]() Thus, there is an economic incentive to develop rewritable DVD technology, including methods and devices, that can be used instead of a computer hard drive. ![]() Unlike computer hard drives, recordable DVD devices have a very significant additional function, which is playing back prerecorded DVD's. Pause is available, but only as a counterpart to pause operation in a VCR, for example interrupting the play back of a prerecorded program or interrupting the recording of a viewed program to eliminate commercials from the recording. The time to completion of the recording can be short or long, depending on the length of the program.Ī desirable feature in a DVD device would enable a viewer and/or listener to initiate resumption of the program presentation as soon as the interruption or pause has ended, without sacrificing the program content during the interruption or pause.Īlthough rewritable DVD technology is generally available, operation is limited to such basic functions as play, record, fast forward reverse and stop. However, the viewer and/or listener cannot view and/or listen to the program in its entirety, and in a proper time sequence, until after the recording has been completed. If the viewer and/or listener is watching a television program, for example, and has a cassette tape in a VCR, or can retrieve and load such a cassette tape quickly, the program can be recorded. ![]() At other times, a program is being viewed and/or listened to without being recorded, and with out any interest in a recording, but the viewer's and/or listener's attention is interrupted, for example by a telephone call or an unexpected visitor. This is referred to as time shifting the program. In many cases, the program presentations are recorded in the viewer and/or listener's absence, for presentation at a later, more convenient time. Reference herein to rewritable DVD technology, devices and methods is generally intended to encompass all of the standards which are now being used, as well as those which may be developed in the future. The acronyms DVD-RAM, DVD−RW and DVD+RW are also used generally to refer to the respective rewritable technology. As of this time no uniform industry standard has been adopted. These are referred to by the acronyms DVD-RAM, DVD−RW and DVD+RW. Several formats are available for DVD's to be recorded on, erased and re-recorded, that is overwritten or rewritten. The acronym DVD-R is also used generally to refer to the write-once, or record-once, technology. A DVD that can be recorded on only once, and thereafter is essentially a DVD read only memory, is referred to by the acronym DVD-R. Such devices include tape recorders, video cassette recorders, recordable compact disks, and most recently, recordable digital video disks (DVD). Various devices have been developed to enable consumers to record video and audio programs for later presentation. This invention relates generally to methods and apparatus providing advanced operating features for audio and/or video programs recorded on disk media, for example recordable digital video disks. ![]()
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