Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Danki Kabuhiki Kaisha

Seiji Kishikawa

Masami Tomita

Yoshinori Kakuta

Nobuzumi Kurihara

Masato Nagasawa

Eiji Yokoyama

Kazuo Mori

Kunihiko Nakagawa

Akira Sakuta

Osamu Fujiwara

Tooru Yuri

A magnetic recording and reproducing apparatus for recording a desired sound or picture signal to a magnetic tape by a magnetic head. At the time of normal-speed recording and reproduction, the magnetic tape is taken up at a constant speed, but by changing the tape travelling speed of the tape on the rotary drum, DTF control and high-speed noiseless reproduction are enabled. The tension of the tape on the entrance side of the rotary drum is controlled to a desired value. This apparatus includes a tape tension actuator and a tape drawing actuator on the entrance side and on the exit side, respectively, of the rotary drum. In DTF control, both tape actuators correct a tracking error of the tape in cooperation with each other. In high-speed noiseless reproduction, both tape actuators are differentially driven so as to lower the tape travelling speed on the rotary drum. Both tape actuators are driven in feedback control using the modern control.

Magnetic recording and reproducing apparatus for controlling the tension

An automatic cassette tape recording and reproducing apparatus having a plurality of cassettes mounted wherein any tape cassette for a reproducing or recording operation may be selected. The apparatus includes a swinging base with a revolving turntable having cassette holders, a turntable revolving mechanism for revolving the turntable when a cassette is selected, and a position detecting mechanism for positioning and identifying the cassette selected by the turntable revolving mechanism. The apparatus also includes a deck on which the selected cassette is mounted when the swinging base comes to a position for playing.

Automatic cassette tape recording and reproducing apparatus with a

In a magnetic tape recording and playback device which has a rotating drum with magnetic heads, a capstan, and reel blocks, the stator coils of motors for driving them are mounted on a board together with electrical circuits for controlling the motors. The electrical circuits and the stator coils of motors are interconnected by conductor patterns formed on the board.

Magnetic tape recording and playback device interconnected by conductor

A magnetic recording and reproducing apparatus, such as VTR or DAT, in which a cassette containing a magnetic tape is to be loaded and which is capable of drawing the tape from the cassette and introducing onto a head drum to perform desired recording and reproducing actions. A tape loading mechanism of the apparatus comprises at least one loading disk, a tape drawing member, and a drive system for the drawing member. For minimizing the size of the apparatus, the loading disk is disposed around one of a pair of reel spindles, and the rotation of the loading disk is transmitted to the drawing member via a link. The loading mechanism gives the same driving force also to a tape tensioning device, a reel spindle braking device and a pinch roller driving device.

Magnetic recording and reproducing apparatus

Growing community of inventors

Nagaokakyo, Japan

Seiji Kishikawa