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1. WO1987007461 - IMAGE REPRODUCING APPARATUS

Publication Number WO/1987/007461
Publication Date 03.12.1987
International Application No. PCT/JP1987/000344
International Filing Date 28.05.1987
IPC
H04N 5/937 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
76Television signal recording
91Television signal processing therefor
93Regeneration of the television signal or of selected parts thereof
937by assembling picture element blocks in an intermediate store
H04N 9/896 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
79Processing of colour television signals in connection with recording
87Regeneration of colour television signals
89Time-base error compensation
896using a digital memory with independent write-in and read-out clock generators
CPC
H04N 5/937
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
76Television signal recording
91Television signal processing therefor
93Regeneration of the television signal or of selected parts thereof
937by assembling picture element blocks in an intermediate store
H04N 9/896
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
79Processing of colour television signals in connection with recording
87Regeneration of colour television signals
89Time-base error compensation
896using a digital memory with independent write-in and read-out clock generators
Applicants
  • MITSUBISHI DENKI KABUSHIKI KAISHA [JP]/[JP] (KR)
  • HATANAKA, Keiji; [JP]/[JP] (UsOnly)
  • NAKAJIMA, Yoshimitsu; [JP]/[JP] (UsOnly)
  • ITOGA, Masami; [JP]/[JP] (UsOnly)
Inventors
  • HATANAKA, Keiji;
  • NAKAJIMA, Yoshimitsu;
  • ITOGA, Masami;
Agents
  • OIWA, Masuo
Priority Data
61/12402928.05.1986JP
61/22872625.09.1986JP
61/22872725.09.1986JP
61/22872825.09.1986JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) IMAGE REPRODUCING APPARATUS
(FR) DISPOSITIF REPRODUCTEUR D'IMAGES
Abstract
(EN) Image reproducing apparatus which reproduces image signals from a magnetic tape (1) via a field memory (8) at a speed different from the recording speed. In order to automatically control the timing for writing onto the field memory (8), envelope detecting signals reproduced from the magnetic heads (2c, 2d, 2e, 2f) are compared by a comparator (6) with a reference potential thereof. The reference potential is then adjusted on the basis of a signal produced from the comparator (6), and the timing for writing onto the field memory (8) is controlled in accordance with the signal produced from the comparator (6) and resulting from the comparison with the adjusted reference voltage. The apparatus is used for a video tape recorder.
(FR) Dispositif reproducteur d'images reproduisant des signaux d'images à partir d'une bande magnétique (1) par l'intermédiaire d'une mémoire de champ (8) à une vitesse différente de la vitesse d'enregistrement. Afin de réguler automatiquement la synchronisation d'écriture dans la mémoire de champ (8), des signaux de détection d'enveloppe reproduits par les têtes magnétiques (2c, 2d, 2e, 2f) sont comparés par un comparateur (6) avec un potentiel de référence. Ce dernier est ensuite régulé en fonction d'un signal produit par le comparateur (6), et la synchronisation d'écriture dans la mémoire de champ (8) est commandée en fonction du signal produit par le comparateur (6) et résultant de la comparaison avec la tension de référence régulée. Ce dispositif est utilisé dans un magnétoscope.
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