Samsung Electronics Co., Ltd.

Ik-kyung Shin

Chul-min Kim

Yong-Jin Kang

A VCR having a preamplifier circuit which is physically incorporated with its main circuit board. The VCR includes a deck ( ) for picking up a video signal, a connector cable ( ) for supplying the video signal picked up by the deck to the preamplifier, a main board ( ) on which the preamplifier is incorporated, and a shield case ( ) for shielding the preamplifier and electrically contacting a wide portion of the deck ( ). It is possible to improve manufacturing productivity with such an arrangement where the preamplifier is incorporated onto the main circuit board, because the process steps for assembling the separate preamplifier board ( ) are omitted. It is also possible to reduce noise interference since the shielding case ( ) for shielding the preamplifier is installed level with the deck portion ( ), thus enlarging the electrical contact area between the shielding case ( ) and the deck ( ) to provide enhanced grounding.

video cassette recorder having preamplifier incorporated with main board

A high fidelity (Hi-Fi) audio signal recording/playback apparatus in which a Hi-Fi audio signal is recorded/reproduced using video heads without an extra Hi-Fi audio head. In the Hi-Fi audio signal recording/playback apparatus, the Hi-Fi audio signal is recorded and reproduced together with the video signal using the same 2-channel head and the same pre-amplifier, without an extra head and pre-amplifier for only a Hi-Fi audio signal, thereby markedly lowering the manufacturing cost.

Hi-Fi audio signal recording/playback apparatus using video heads

The present invention relates to a duplication apparatus which detects the quality of a signal recorded on a source recording medium to select a copy mode that is appropriate for the detected result, and duplicates the recorded signal of the source recording medium to a target recording medium to be a duplication object, thereby making the apparatus easier to use.

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Suwon, South Korea

Ik-kyung Shin