Recording and/or reproducing method and apparatus with dubbing mode
AssigneeSony Corporation
InventorsHideki Nagashima, Ryo Ando, Yasuaki Maeda, Hideo Obata, Tadao Yoshida, Kazuhiko Fujiie
Life of this patent
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Abstract
A high speed dubbing is to be realized with two recording and/or reproducing units for compressed data. To this end, a magneto-optical disc 32 is read by an optical head 33 and compressed data produced via a decoder 41 are delivered to a memory 14 via a switch 37. The data are then delivered to a magnetic head driving circuit 16 via an encoder 15 for direct writing on a magneto-optical disc 2. In this manner, compressed data are directly dubbed without expansion to realize high speed dubbing.
Claims20
A reproducing apparatus for supplying digital signals to a recording apparatus for dubbing, comprising:
- reproducing means for reproducing compressed digital signals from a recording medium;
- memory means for temporarily storing the compressed digital signals;
- memory control means for controlling the write operation at a first transmitting rate from the reproducing means and the read operation at a second transmitting rate lower than the first transmitting rate from the memory means;
- decoding means for decoding the compressed digital signals which are supplied from the memory means;
- selecting means for selecting a high-speed dubbing mode or a normal speed dubbing mode;
- switching means for selecting between the decoded digital signals which are supplied from the decoding means and the compressed digital signals which are supplied to the memory means in accordance with the selecting means;
- and
- control means for controlling the reproducing means so as to reproduce the compressed digital signals continuously if a user selects the high-speed dubbing mode and to reproduce the compressed digital signals intermittently if the user selects the normal-speed dubbing mode.
A reproducing method for supplying digital signals to a recording apparatus for dubbing, comprising the steps of:
- reproducing compressed digital signals from a recording medium;
- temporarily storing the compressed digital signals in a memory;
- controlling the write operation at a first transmitting rate from the step of reproducing and the read operation at a second transmitting rate lower than the first transmitting rate from the temporarily storing step;
- decoding the compressed digital signals which are supplied from the memory;
- a first selecting step for selecting a high-speed dubbing mode or a normal speed dubbing mode;
- a second selecting step for selecting between the decoded digital signals which are supplied from the decoding step and the compressed digital signals which are supplied to the memory in accordance with the first selecting step;
- and
- controlling the reproducing step so as to reproduce the compressed digital signals continuously if a user selects the high-speed dubbing mode and to reproduce the compressed digital signals intermittently if the user selects the normal-speed dubbing mode.
A reproducing apparatus for supplying digital signals to a recording apparatus for dubbing, comprising:
- a reproducing unit for reproducing compressed digital signals from a recording medium;
- a decoder for decoding the compressed digital signals;
- a controller for controlling the reproducing unit so as to reproduce the compressed digital signals continuously if a user selects a high-speed dubbing mode and to reproduce the compressed digital signals intermittently if the user selects a normal speed dubbing mode;
- a memory for temporarily storing the compressed digital signals in accordance with said controller;
- and
- a switching unit for selecting between the decoded digital signals from the decoder and the compressed digital signals which are supplied to the memory in accordance with said controller.
Dependencies are inferred from the claim text.