Hitachi, Ltd.

Yoshiyuki Azuma

Katsuhiko Abe

Shoji Ohno

Hiroto Yamauchi

Motoyoshi Sasaki

Hisashi Ohta

Mayumi Ueyama

Hideo Nishijima

Hitoaki Owashi

Yuichi Yagawa

Takashi Furuhata

Kenji Satoh

Hiromi Ukai

Yasuhide Mogi

A magnetic recording/reproducing apparatus having a capability of allowing contents of records on a magnetic tape to be discriminatively identified and a capability for displaying closed caption includes a tape map memory for storing contents recorded on a tape and a tape map controller. As a manual input facility, a tape map button, a caption button, a play-back button, a stop button and others are provided. Upon loading of a tape undergone recording(s), the tape map button is pushed to display on a monitor screen tape map information concerning the contents of program(s) recorded on the loaded tape, temporal duration(s) of the program(s), and history of play-back of the tape.

Magnetic recording/reproducing apparatus for searching programs recorded on magnetic tape

A TV program selection support system selects only programs suiting viewer's preference or necessary for a viewer from a large number of programs to be broadcast and proposes the selected programs to the viewer. The TV program selection support system comprises a program receiver for receiving broadcast TV programs, an EPG receiver for receiving an electronic program table listing TV programs, an EPG storage device for storing an EPG received by the EPG receiver, an operating means to be operated by the viewer to select a program from the stored electronic program table, a program selection support program for determining viewer's view tendency by analyzing the operation made by the viewer, creating an electronic program table on the basis of the view tendency and displaying the created electronic program table.

TV program selection support system

Magnetic recording/reproducing apparatus for search programs recorded on

magnetic recording/reproducing apparatus for searching programs recorded

A magnetic tape transport controller for a magnetic recording and reproducing apparatus in which a pilot signal for tracking control having four different frequencies is recorded on a magnetic tape by a rotary magnetic head and the magnetic tape is transported in a playback mode at a different tape speed than that in a recording mode. The tape transport controller has means for detecting an amplitude change of a specific one of signals derived by frequency-converting a reproduced pilot signal and controlling the tape speed such that the frequency of the amplitude change is maintained at a predetermined frequency. It also has a phase control loop to control the tape speed such that a phase of the specific signal coincides with a phase of a reference signal. In the playback mode in which the tape is transported at the different speed than that in the recording mode, frequencies of a local pilot signal used to frequency-convert the reproduced pilot signal are switched in the opposite order to that of the switching of the frequencies in the recording mode. A detection circuit which detects a difference between two frequency converted signals of different frequencies and amplifies the difference inverts a polarity of an output signal for each track switching in a standard speed playback mode and does not invert the polarity in a variable speed playback mode.

Variable speed playback controller for a video tape recorder

Growing community of inventors

Hitachinaka, Japan

Yoshiyuki Azuma