Other

Matsushita Electric Industrial Co., Ltd.

Masayuki Matsumoto

Masaaki Kobayashi

Masahiro Honjo

Yoshiaki Yamauchi

Masao Tomita

Kazuhiro Yamanishi

Kazuyoshi Itoh

Kinzo Kishida

Motohiro Nakano

Hiroyuki Toda

Yong Wang

An optical fiber measuring module is provided with an optical fiber cable () including an optical fiber core (), a cladding () and a covering layer (), a base member () for holding the optical fiber cable (), and an attachment member () for attaching the base member () to a structure ().

Optical fiber measuring module having base member holding optical fiber cable

A video signal recording/reproducing apparatus includes a first set of rotary heads mounted on a rotary disk and a second set of rotary heads mounted on head actuators which are also mounted on the rotary disk. The apparatus has two reproduction modes. A magnetic tape in the first reproduction mode is driven at a speed equal to the speed used in a recording mode. The magnetic tape in the second reproduction mode is driven at a speed which is different from the speed used in the recording mode. The apparatus has a negative feedback loop which detects the reproduced signal level of the second set of rotary heads and drives the head actuators in order to increase the reproduced signal level of the second set of rotary heads. In the first reproduction mode, the negative feedback loop is intermittently closed. At the period of time when the negative feedback loop is open, the negative feedback loop holds the value of its output signal to that of the last time period when the negative feedback loop was closed, and, in addition, the head actuator is not driven when the feedback loop is open. At a transitional period when the apparatus switches from the first reproduction mode to the second reproduction mode, a holding signal from the negative feedback loop is supplied to the head actuator.

Video tape recording/reproducing apparatus having an auto tracking

Growing community of inventors

Hirakata, Japan

Masayuki Matsumoto