Matches 251 - 300 out of 380 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
4758911 Audio signal recording and/or reproducing apparatus  
A system and apparatus for helically scanning a magnetic tape having slant tracks wherein the slant tracks are divided into a plurality of segments. A helical scan drum has at least first and...
4757408 Magnetic recording and/or reproducing apparatus  
A helical scan type magnetic recording and/or reproducing apparatus comprises a rotary erase head mounted on a rotary drum at such a position that in a normal recording mode the rotary erase head...
4752839 Head switching in high resolution video reproduction apparatus  
Video reproduction apparatus records a field of a high resolution time-division-multiplex (TDM) video signal on first and second adjacent tracks on a magnetic tape. A head switch signal is included...
4743985 In a video tape recorder having rotary recording, auxiliary and erasing heads, a circuit for short circuiting the auxiliary head during erasing  
A video tape recorder for recording a plurality of skewed recording tracks on a video tape includes a recording head, an auxiliary head and an erasing head mounted on a rotary body of a tape guide...
4740847 Magnetic recording/reproducing apparatus  
A magnetic recording/reproducing apparatus in which at least two recording and reproducing magnetic heads are mounted on a rotatable cylinder with an angular distnce of 180° therebetween, wherein...
4717974 Waveguide apparatus for coupling a high data rate signal to and from a rotary head scanner  
Rotary scanner apparatus includes a headwheel having at least one magnetic head arranged for making successive operative sweeps across a magnetic tape. To achieve high data rate transfer, a unitary...
4716476 Tape recording apparatus  
In a tape recording apparatus having a rotary guide drum on which a tape is helically wrapped, a second erase head is secured on a rotary body included in the tape guide drum for erasing recorded...
4706137 Head switching signal producing circuit with compensation of a phase error due to the positioning of a rotary drum head and a rotational phase detector  
A head swtiching signal producing circuit produces a head switching signal by electrically compensating for a phase error on a rotational plane of a rotary drum between a mounting position of a...
4704642 Noise reduction circuit for reducing pulse noise in audio signal reproduced from a recording medium  
A noise reduction circuit is provided with a slew rate detection circuit for detecting a slew rate of a reproduced audio signal, and variably controls a pulse width of a hold signal depending on...
4688106 Video processing system using multi-head disc store  
A video processing system which allows sequences of video pictures to be transferred to disc stores in real time. These sequences can be read out of the disc store and processed before being...
4688115 Apparatus for reproducing a digital signal  
An apparatus for reproducing digital signals recorded on a magnetic or other recording tape includes a servo mechanism which is effective, when the tape is transported at a high speed in either a...
4685006 Magnetic recording-reproducing device  
A magnetic recording-reproducing device for recording a signal on a magnetic tape and/or reading out a signal from the magnetic tape to reproduce the same while running the magnetic tape in contact...
4680648 Information signal reproducing apparatus  
An information signal reproducing apparatus, which is arranged to reproduce an information signal from recording tracks formed on a record bearing medium one after another in a direction...
4672469 Delay time adjusting system for video signal reproducing apparatus having heads scanning across multiple tracks  
A delay time adjusting system comprises a comparing circuit for comparing levels of reproduced frequency modulated signals from a pair of rotary heads which simultaneously scan over a magnetic...
4669002 Multiple magnetic head rotary transducer drum for simultaneous recording and reproducing  
A magnetic recorder/reproducer includes a rotary drum supporting first and second playback heads and first and second recording heads for reading information from and writing information in a tape...
4656531 Noise-eliminating apparatus for a video tape recorder  
A noise-eliminating apparatus for a video tape recorder wherein the high frequency signals of the first and second channels, reproduced by a helical scan type video tape recorder, an alternately...
4654726 Video recorder with reduced cross talk  
Excessive cross talk between adjacent tracks can occur in a video recorder in which the line-synchronization pulses of adjacent tracks are not adjacent, in long-play or 8-mm video for example. The...
4642711 Video tape recorder including vertical recording heads  
A helical scanning type video tape recorder includes a rotary cylinder which is slidable on a video tape; and a pair of vertical magnetization recording heads mounted on the peripheral wall of the...
4639805 Combination of reproducing heads and a rotary transformer device  
A rotary transformer is employed in a 4-head type recording and/or reproducing apparatus which has a rotary body which is wrapped with a magnetic tape, and four heads mounted 90° apart from each...
4636875 Playback device for a digital signal recorded by a plurality of heads  
When recording a PCM signal, particularly an audio signal, on the oblique tracks of a magnetic tape, e.g. for example of a videorecorder, errors occur in the digital signal during the change of...
4636873 Method and apparatus for recording and reproducing an information signal with a larger tape wrapping angle  
Apparatus for recording and reproducing digital color video signals from successive, parallel tracks on a magnetic tape includes a rotary guide drum about which the magnetic tape is wrapped for an...
4630136 Reproduced signal switching circuit for reproducing apparatus having rotary heads for special reproduction  
A reproduced signal switching circuit for a reproducing apparatus, comprises a switching circuit for switching output signals of rotary heads for special reproduction so as to obtain a continuous...
4628373 Rotating head type magnetic record/reproduce apparatus  
The rotating-head PCM record/reproduce apparatus has record and reproduce heads of which the reproduce heads are disposed to scan the recorded track formed by the record heads with a delay of a...
4626932 Rotating video head switching control system  
To prevent, cross-talk and other signals from being applied from the magnetic transducer head (6, 7) to an output circuit (12, 13; 28, 29) in a video tape reproduction system, in which one of the...
4623940 Magnetic reproducing apparatus  
A magnetic reproducing apparatus which has a pair of main rotatable heads having different azimuth angles and a pair of auxiliary rotatable heads having different azimuth angles. When a magnetic...
4614985 Recording/reproduced signal switching system for a 4-head type recording and reproducing apparatus  
A recording/reproduced signal switching system for a 4-head type recording and reproducing apparatus, comprises a circuit for rotating a rotary body which has four heads mounted equally spaced...
4607297 Apparatus for detecting clogging of head gap  
In an apparatus having a record mode for recording video or other information signals in successive parallel information tracks on a record tape by means of a plurality of rotary heads repeatedly...
4605974 Magnetic recording and reproducing apparatus  
A magnetic recording/reproducing apparatus has a rotor drum with a group of rotary magnetic heads mounted thereon, a reproducing amplifier, a recording/reproducing mode switching circuit, a head...
4600952 Helical scan video tape recorder with auxiliary heads for blur free high speed reproduction pictures  
In a video tape recorder of the helical scan type, two auxiliary magnetic heads having different azimuth angles are provided in the vicinity of two main magnetic heads. The main and auxiliary...
4600953 Head switching signal producing circuit for a magnetic recording and reproducing apparatus  
In a helical scanning type video tape recorder provided with two rotary video heads for recording and reproducing a video signal supplied to the heads in the oblique direction of a magnetic tape by...
4598325 Apparatus for transmitting digital signals across a rotary gap  
An apparatus is disclosed for coupling digital signals across a rotary mechanical gap as, for example, in a helical scan optical or magnetic tape recording/playback system where it is required to...
4591924 Multiplex magnetic recording and reproduction system  
In a video tape recorder of the helical scan type, a pair of rotary magnetic heads for the audio signal are provided in addition to the rotary video heads so that the audio signal is recorded on...
4559567 Apparatus for recording and/or reproducing video and audio signals  
For providing high-quality reproduction of audio in a video tape recorder (VTR), the video and audio signals are recorded as first and second mixed signals in successive alternately arranged...
4549229 Method and apparatus for compensating for tape jitter during recording and reproducing of a video signal and PCM audio signal  
Apparatus for recording and reproducing an information signal comprised of a video signal and an audio signal in a plurality of successive tracks on a magnetic tape, includes a recording section...
4542418 Method and apparatus for reproducing an information signal comprised of a video signal and audio signal  
A reproducing section of a helical scan VTR for reproducing a color television signal recorded in a plurality of successive parallel tracks on a magnetic tape and comprised of a video signal and at...
4542419 Method and apparatus for recording and reproducing an information signal comprising a video signal and audio signal  
Apparatus for recording and reproducing an information signal comprising at least an analog audio signal in a plurality of successive tracks on a magnetic tape includes a PCM processing circuit for...
4520405 Insert recording system for a video signal  
In an insert recording system for a video signal, a tape is recorded with a video signal along tracks formed obliquely with respect to the longitudinal direction of the tape, a part of recorded...
4509082 Circuit arrangement for generating the vertical synchronizing information in a magnetic video tape apparatus  
In magnetic video-tape equipment of the helical-scan type the vertical synchronizing information is situated at the beginning of a track near the edge of the magnetic tape. When the edge portion of...
4490754 Video recorder with reduced audio interference  
A system for recording or playing back a television signal which includes an audio carrier which is frequency modulated with an audio signal, the television signal being recorded along oblique...
4489354 Information recording system with recording process monitoring function  
The same recording head or heads may be employed to record both an information signal and a synchronization word signal. Where at least two recording heads provide overlap intervals in the...
4486792 Magnetic recording and reproducing device  
A magnetic recording and reproducing device includes a reproducing mechanism which can be operated in a selected one of a first mode wherein information recorded on a tape is reproduced at a speed...
4484236 Magnetic tape recording and reproducing arrangements  
A magnetic tape recording and reproducing arrangement comprising a rotary drum, helical scan digital video tape recorder including first and second head assemblies mounted diametrically on a rotary...
4480272 System of recording and playback of digitally recorded signals, especially television  
Four magnetic heads are provided on a rotary mount equally spaced around the circumference, so when they are rotated to scan a tape wound around the headwheel in half a turn of a helix, each...
4443822 Reproducing apparatus  
A reproducing apparatus for information signals recorded on a record carrier in the form of a tape comprises two rotatable reproducing heads for alternately reproducing the information signals and...
4426666 Video signal recording/reproducing apparatus  
A video signal recording/reproducing apparatus has two main rotary heads, two sub-rotary heads, and a recorded video tape. One main rotary head M1 has a +6° azimuth angle and one sub-rotary head...
4396954 Still mode video signal reproducing apparatus  
In an apparatus which reproduces video signals from oblique tracks successively formed on a tape, there are provided at least two main rotary heads having different azimuth angles with respect to...
4395740 Apparatus and method for locating and presenting pre-recorded information  
An apparatus and a method for locating and presenting pre-recorded information, and more particularly, locating and presenting any of a plurality of messages which are recorded on video medium such...
4388657 Search-mode arrangement for VTR  
In a VTR of the type having information recorded in adjacent tracks disposed angularly across the direction of tape travel, a search mode playback arrangement is incorporated having a pair of...
4364098 Multiple-channel rotary transformer circuit in a magnetic recording and/or reproducing apparatus  
A multiple-channel rotary transformer circuit is used in a magnetic recording and/or reproducing apparatus provided on a rotary structure with a plurality of sets of rotary magnetic heads, each set...
4361856 Video tape recorder  
A video tape recorder of the helical scan type including two rotational video heads which have their phase and speed controlled. The video heads are mechanically displaced by 180° from each other...
Matches 251 - 300 out of 380 < 1 2 3 4 5 6 7 8 >