Sony Corporation

Nippon Light Metal Company, Ltd.

Mikio Kita

Kaoru Urata

Kenji Ohtsuka

Kazuo Ido

Ichiro Ogata

Hiroshi Matsuzawa

Ichiro Aki

Kohei Nakajo

Takaaki Murata

Takayuki Ohishi

Akira Suzuki

Osamu Shimizu

Ichitaro Sato

Mitsugu Yoshihiro

Seiichi Sakai

Tetsuya Iwamoto

Hiromi Hoshino

Mamoru Mizukami

Tomokiyo Kato

Kazuyuki Sugizaki

Yoshihito Ueda

Kenzo Yonemochi

Tetsuo Takada

Syusuke Ozawa

In an information-recording apparatus and the like according to the invention, digital information is recorded in a magnetic tape according to a recording format in which two types of sync lengths exist. The recorder records digital information having a first information-recording length and digital information having a second information-recording length, which is shorter than the first information-recording length in the magnetic tape. The recorder records a CTL signal serving as a reference during reproduction of the digital information between a recording portion of the digital information having the first information-recording length and a recording portion of the digital information having the second information-recording length. A gap portion between the recording portions of digital information having different sync lengths and a recording portion of a CTL signal are utilized as a signal processing space required for carrying out error correction such as C1 correction during reproduction of the digital information.

Information-recording apparatus, information-recording method, information-reproducing apparatus, information-reproducing method, and information-recording medium

An original coded stream reproduced from a magnetic tape is decoded by an MPEG decoder, and original video data of a base band is thus generated. A switching circuit generates edited video data by switching the original video data and supplied insertion video data on the base band level at IN-point and OUT-point. The MPEG encoder generates an edited coded stream by coding the edited video data supplied from the switching circuit. A system controller controls a recording circuit to record a picture changed by editing processing, from among the edited coded stream, onto the magnetic tape.

Data recording device, data recording method, data editing device, and data editing method

When a recording start executed in a variable-speed recording mode, at STa signal having a variable frame rate is selected on the basis of a validity signal from among image signals having a predetermined output frame rate in which the images having the variable frame rate are contained and stored in a memory. If it is decided at STthat a phase difference between a write position and a read position in the memory has reached a recording start level, the stored signal is recorded in a recording medium at ST. If it is decided at STthat the phase difference has decreased to a recording stop level, recording to the recording medium is stopped at ST. When an end operation is executed at ST, the signal in the memory is recorded in the recording medium to then end actions. The signals are selected and recorded, thus resulting in a smaller signal quantity. Further, if the variable frame rate is varied, video effects can be confirmed only by reproducing the recorded signals.

Picked up image recording system, signal recording device, and signal recording method

In an apparatus for reproducing a recorded signal and the like of this invention, two reproducing heads are provided for a single track with their set positions being deviated in the track width direction. A signal selecting unit discriminates a reproducing head whose tracing condition of a target track is appropriate based on an error correction result of a C1 correcting unit and output levels of reproducing heads. A signal obtained by the discriminated reproducing head is supplied to a C2 correcting unit to generate an output signal. Consequently, an off track allowance is increased as compared with a case where the target track is traced with a single reproducing head. At the time of a special reproducing operation or even if a narrow track pitch system is adopted, a recorded signal is reproducible properly.

Apparatus and method for reproducing recorded signal

An original coded stream reproduced from a magnetic tape is decoded by an MPEG decoder and original video data of a base band is thus generated. A switching circuit generates edited video data by switching the original video data and supplied insertion video data on the base band level at IN-point and OUT-point. The MPEG encoder generates an edited coded stream by coding the edited video data supplied from the switching circuit A system controller controls a recording circuit to record only a picture changed by editing processing, from among the edited coded stream, onto the magnetic tape.

Data recording apparatus and data recording method, and data editing apparatus and data editing method

Two playback heads A,and A,having the same azimuth &thgr; and having a track width W,equivalent to about 1.5 times the track width W,of the recording head are paired to form a pair of heads. These playback heads A,and A,paired to form a pair of heads are arranged so as to read one recording track T,simultaneously in the condition with a gap of about one track pitch T,in the track width direction. Data of all recording tracks are thus read correctly without tracking during playback.

Helical scanning magnetic recording/playback device having multiple pairs of playback heads and recording heads

Drum for a video tape recorder

Audio and video data recording and reproducing apparatus and method

An apparatus selectively operable for reproducing digital information signals recorded in accordance with a first format in relatively long tracks extending obliquely across a first effective recording width of a first magnetic tape, or for reproducing analog information signals recorded on a second magnetic tape in accordance with a second format in relatively short tracks extending obliquely across a second effective recording width which is narrower than the first effective recording width has a rotary drum around which a magnetic tape selected from the first and second magnetic tapes is wrapped to the same extent, playback heads rotatable with the drum scan obliquely across the first effective recording width of the selected magnetic tape wrapped around the drum so that, if the selected magnetic tape has been recorded in accordance with the first format, the playback heads reproduce the digital information signals while scanning the relatively long tracks, whereas, if the selected magnetic tape has been recorded in accordance with the second format, the playback heads scan beyond the relatively short tracks and thereby reproduce noise after the analog information signals recorded in such short tracks, and, when reproducing a magnetic tape recorded in accordance with the second format, the analog information signals reproduced from the relatively short tracks are time base extended so as to increase the duration thereof for eliminating noise.

Digital VTR that is also capable of reproducing a signal recorded with

A magnetic recording and reproducing apparatus, e.g., a video tape recorder for recording and reproducing digital video signals etc., is intended to reliably perform a tracking control even when recording tracks are formed with high density. A first pilot signal having a large azimuth loss and a second pilot signal without azimuth loss are recorded in a recording track, and a rough tracking control operation and a fine tracking control operation are executed on the basis of the second pilot signal and the first pilot signal respectively.

Magnetic recording and/or reproducing apparatus

A magnetic tape recording apparatus having an ordinary recording mode and an editing mode in which an information signal is recorded additionally to information already stored in previously formed oblique tracks is provided in which a high degree of accuracy is assured for tracking servoing upon editing by forming on the tape a track area for tracking in an area at a predetermined position of every other one of the oblique tracks. After the recording apparatus forms a tracking area in a particular oblique track, the recording apparatus prevents its rotary head apparatus from forming another tracking area in an adjacent oblique track.

Information signal recording apparatus for recording tracking signals in

The fixing device comprises a body adapted to be secured directly onto a brittle wall or secured to the brittle wall with a member to be attached to the wall interposed therebetween. The body is formed with at least two guide holes passing therethrough from the top to the bottom thereof each for receiving therein a fixing member such as a set screw or a nail so that it is driven into the wall to thereby fixedly secure the body onto the wall. The guide holes are oriented in such an inclinded direction with respect to the normal to the wall that the fixing members do not intersect with each other and do not extend in parallel to each other when they are inserted into the body and driven into the wall, thereby permitting the body to be securely fixed to the wall. An engaging member having integrally formed therewith a supportng portion such as a hook or a hanger may be detachably engaged over the body. Alternatively, the body itself may be integrally formed with a supporting portion such as a hook, a hanger and a ring.

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Kanagawa, Japan

Mikio Kita