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Pub. No.:    WO/1979/000213    International Application No.:    PCT/US1978/000108
Publication Date: 19.04.1979 International Filing Date: 13.10.1978
G11B 27/00 (2006.01), G11B 27/026 (2006.01), G11B 27/028 (2006.01), G11B 27/10 (2006.01), G11B 27/34 (2006.01), H04N 5/781 (2006.01), H04N 5/937 (2006.01)
Priority Data:
842247 14.10.1977 US
Abstract: front page image
(EN)A record and playback system for video information, e.g. video frames successively presented at a standard frame rate, each frame having first and second video fields, and for playing back the video information in a desired sequence to produce a video output signal, providing either slow motion or normal motion effects. A frame recorder has a rotatable recording medium (22), first and second transducer means (24, 25) for recording and playing back video frames in recording tracks on the recording medium. and means (27) rotating the medium at frame rate such that a video frame is recorded in each of the recording tracks. A field store (111) can store a field of video information replayed from the recorder. A switch is connected to a field store and to the recorder for providing at the switch output video information from the field store or the recorder in response to a delay field signal. The switch changes switching state and the transducer means are stepped to provide at the switch output replayed video information in the same sequence in which it was recorded or, alternatively, in a sequence different from that in which it was recorded, with the sequence of fields within the frames properly ordered for interlace. The video recorder system also includes a circuit providing a cue display signal (C-2) on a video monitor which is indicative of the progression of the transducer means to successive tracks during both recording and playback.
(FR)Le systeme d"enregistrement et de reproduction d"informations video, par exemple de trames video se succedant a une cadence standard, chaque trame comprenant un premier et un deuxieme champ video, restitue l"information selon une sequence voulue pour fournir un signal video reproduisant le mouvement soit normalement soit au ralenti. Il comprend un enregistreur de trame muni d"un support d"enregistrement rotatif (22), des premiers et deuxiemes moyens transducteurs (24, 25) pour enregistrer et reproduire les trames video sur les pistes d"enregistrement portes par l"element d"enregistrement; des moyens (27) de mise en rotation de l"element d"enregistrement a la frequence des trames de maniere a enregistrer une trame sur chaque piste d"enregistrement; un moyen d"emmagasinage de champ (111) apte a emmagasiner un champ d"information video reproduit a partir de l"enregistreur; un interrupteur relie a un moyen d"emmagasinage et a l"enregistreur pour fournir a la sortie de l"interrupteur une information video a partir des moyens d"emmagasinage ou a partir de l"enregistreur en reponse a un signal retard de champ. L"interrupteur change son etat de commutation et les moyens transducteurs sont cadences pour fournir a la sortie de l"interrupteur l"information video reproduite selon une meme sequence que celle de l"enregistrement ou alternativement selon une sequence differente de celle de l"enregistrement. L"ordre des sequences a l"interieur des trames est propre a assurer l"interlacement. Le systeme d"enregistrement video comprend aussi un circuit produisant un signal d"indication (C-2) affichant sur un moniteur video le passage des moyens transducteurs sur des pistes successives pendant l"enregistrement ainsi que pendant la reproduction.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)