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7417713 |
Optical disc with a theft deterrent coating
An optical disc used for storing content includes a theft control area selected to render the disc unreadable. The disc must be exposed to radiation of a specific wavelength before it can be read...
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7412153 |
Information recording device and method, and information recording system
In recording information, an SMPTE 339M-defined UMID buried in video and audio material signals to be recorded to a magnetic tape ( 30 ) or a UMID generated from information other than the material...
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7342742 |
Magnetic recording and reproduction apparatus
A magnetic recording and reproduction apparatus includes a rotatable head cylinder for recording information to, and/or reproducing information from, a magnetic tape; a tape pull-out member for...
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7260884 |
Method of manufacturing a drum assembly associated with video tape machine
A method of manufacturing a drum assembly associated with a digital betacam video tape machine is disclosed. The method includes providing a helical scan drum assembly having a stationary upper...
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7096187 |
Compressed audio information
Compressed entertainment content such as audio or video or both includes additional aspects and operations associated their way. The compressed audio may be used to signal computers such as a...
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7054100 |
Magnetic tape recording/reproducing device and magnetic tape recording/reproducing system
The present invention is to provide a magnetic tape recording/reproducing device capable of accurately positioning a magnetic tape relative to a magnetic head to thereby improve...
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7031088 |
Apparatus and method for detecting an abnormality in a recorded signal
An apparatus for detecting an abnormality of a recorded signal of a recorder/player includes a plurality of recording/reproducing heads for recording/reproducing a signal onto/from a medium, and a...
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7002777 |
Tape drive head with lower core layer side inclined at angle equal to or greater than azimuth angle and aligned with upper core layer edge
A thin film magnetic head, in which: a magnetic gap thereof is disposed slantingly relative to a direction orthogonal to a scanning direction of the head corresponding to an azimuth angle; an upper...
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6819529 |
Head drum device with carbon-containing synthetic resin upper drum and larger diameter intermediate drum
A head drum device of the present invention prevents a magnetic tape ( 2 ) from clinging to the head drum device ( 3 ) due to electrostatic charge by using a carbon-containing synthetic resin as...
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6751057 |
Magnetic recording/reproducing apparatus and rotary head drum device
A guide plate is provided along the respective outer periphery of rotary and fixed drums on the upstream side relative to an inlet portion where a magnetic tape starts making contact with a...
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6680808 |
Magnetic millipede for ultra high density magnetic storage
The present invention relates to computer storage systems which have a tip ( 24 ) directed close or in contact to the storage medium ( 10 ) by which bit-writing and bit-reading is enforced. It is...
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6661601 |
Cabinet structure for a magnetic tape recorder
Disclosed is a cabinet structure for a magnetic tape recorder having a rear-and-bottom structure to which a deck of the magnetic tape recorder is to be fixed. At least selected part or parts or the...
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6563664 |
Magnetic signal recording and reproducing apparatus and magnetic signal recording and reproducing method
There are provided an approximately cylindrical rotary drum, a magnetic field applying means and a magnetic field detecting means that are mounted on the rotary drum, signal processing means, and a...
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6515833 |
Rotating drum assembly and magnetic recording/reproducing apparatus having a tape-contact piece
A rotating drum assembly, and a magnetic recording/reproducing apparatus including the rotating drum assembly, are provided. The rotating drum assembly comprises a cylindrical rotating drum; a...
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6411465 |
Rotary head drum assembly with upper, lower and inner drums with cylindrical surfaces of differing outward radial position
A rotary head in which the tape running load is decreased by setting the tape path cylindrical surface of an upper drum ( 12 ) in a range of winding of a tape ( 31 ) at an inner side relative to...
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6356416 |
Assembly comprising at least one embedded chip with magnetic head(s)
An assembly including at least one chip with an embedded magnetic head. A base and/or a cover includes at least partially a housing in which the at least one chip is embedded. Such an assembly may...
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6313965 |
Chassis for mounting a mechanism such as a video cassette recorder
A mechanism chassis 1 comprises a polygonal flat plate portion 11 for arranging a plurality of mechanisms on a surface of thereof, and a plurality of side plate portions 12, 13, 14, 15 bent from...
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6304410 |
Helical scanning magnetic recording/playback device having multiple pairs of playback heads and recording heads
Two playback heads A1 and A2 having the same azimuth θ and having a track width W 11 equivalent to about 1.5 times the track width W 2 of the recording head are paired to form a pair of heads....
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6172840 |
Magnetic recording/reproduction apparatus including a rotary head cylinder and both vertical and inclined guides for winding a magnetic tape about the rotary head cylinder
An apparatus of the present invention is a magnetic recording/reproduction apparatus for pulling out a magnetic tape from a tape cassette and winding the magnetic tape around a rotary head...
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6125001 |
Method and apparatus for recording digital signal and drum unit for recording FM audio signal and digital signal
A digital signal recording method of the present invention for recording data divided into at least two segments in a recording track on a magnetic tape with a magnetic head mounted onto a...
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6115218 |
Tape support system for arcuate scan rotating head
The present invention relates to a method and apparatus for engaging a magnetic tape with a transducer at a read/write zone for achieving consistent head-to-tape coupling throughout the intended...
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6091588 |
Magnetic tape recorder having a capacitive coupling device in the form of fixed and mobile rings or ring segments
A magnetic tape recorder/reader including several magnetic heads (30-45) driven in a rotary movement at the periphery of an equatorial slot (4) of a cylindrical drum (1) on the surface of which...
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6078464 |
Drum base on which a drum of a magnetic tape recorder is mounted
A drum base according to he invention, on which a drum of a magnetic tape recorder is mounted, comprises a substantially annular frame having a fixing surface to which the drum is fixed; at least...
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6038098 |
Rotary head apparatus with magnetic heads having respective gaps at azimuth angles which are not substantially equal to each other
Information signals are recorded on a magnetic tape in parallel tracks that are oriented at an angle from the direction of magnetic orientation of the magnetic tape. Two magnetic heads which...
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6018442 |
Recording and/or reproducing apparatus having rotary scanning drum supported by a bearing having contacting bearing surfaces which provide electrical grounding
An apparatus having a read/write head for reading and/or writing information on an information carrier which may be in the form of a tape or disc. The head is mounted on a drum which is supported...
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6015627 |
Magnetic head drum and method of manufacturing same
A head drum for supporting a magnetic head for magnetically recording information on and reproducing information from a magnetic tape includes an inner body of an aluminum alloy, and a...
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6014286 |
Magnetic head having a die-molded conductive resin head base
A magnetic head has a head chip comprising a magnetic substance. A die-molded head base is formed from a conductive resin material, and the head base has a housing envelope for the head chip formed...
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5949621 |
Magnetic recording/reproducing apparatus having double tilting member for dynamic tracking
The magnetic recording/reproducing apparatus of the present invention performs a fast forward reproduction, a fast backward reproduction, a still picture reproduction and the time-lapse recording....
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5949620 |
Magnetic head drum assembly
Featured is a magnetic drum assembly including a rotary drum supporting a magnetic head for recording/reproducing information on a magnetic tape and a stationary drum secured to a base of a...
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5883751 |
Magnetic tape recording and reproducing apparatus preventing axial vibration of rotary head cylinder
A magnetic tape recording and reproducing apparatus prevents vibration caused by rotation of a rotary drum constituting a rotary head cylinder. The magnetic tape recording and reproducing apparatus...
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5870257 |
Head drum assembly for use in a digital video cassette recorder
A head drum assembly for use in a digital video cassette recorder includes a miniaturized transformer which has a rotor piece provided with a groove and a stator piece provided with an identical...
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5867349 |
Drum with fitting lugs for positioning and attaching to a deck
Deck and drum for a tape playback and/or recorder machines in which the assembly of deck and drum is made by way of lugs 19 of the drum cooperating with catch 14 of the deck. With such an...
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RE36016 |
Disc storage device having an integrated driving system
The present invention relates to an integrated driving system for signal-processing devices, especially video devices (recorders), and other, preferably magnetic pulse recording devices, wherein...
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5844745 |
Magnetic head assembly having two heads with the magnetic layer of one head angled between 80° to 100° relative to the gap of the other head
A magnetic head assembly having two heads with the magnetic layer of one angled between 80 to 100° of the gap of the other, and method and apparatus using same. The angle formed on a magnetic tape...
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5835301 |
Multi-track helical scanning system
A head drum, as a first embodiment, for scanning a magnetic tape guided at an angle (θ D ) to the head drum assembly includes 2N number of video heads being divided into a first and a second...
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5831796 |
Apparatus for fixing a head cylinder
An apparatus for fixing a head cylinder provided with a magnetic head to a deck base. The apparatus has a flange portion provided on a lower portion of the head cylinder; contacting portions...
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5796559 |
Signal transmitting device with an optical coupler for use in a head drum assembly
A signal transmitting device for use in a head drum assembly includes a fixed shaft, a rotary drum rotatably mounted around the fixed shaft, at least two magnetic heads arranged on and attached to...
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5793561 |
Rotary drum assembly having dynamic-pressure generating mechanism between rotary shaft and bearing
A rotary drum assembly is arranged so that upper and lower drums can rotate about a central shaft with respect to each other via a dynamic-pressure bearing. In the rotary drum assembly, the central...
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5790350 |
Head drum assembly for a VCR with a shaft including a vertical groove and a slanted groove
Disclosed is a head drum assembly for a VCR having a simple structure and high reliability. Provided is a shaft including a vertical groove extending from an upper portion to a lower portion of the...
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5781372 |
Axial resonance attenuating apparatus for rotation drum apparatus having flexible rod-shaped linking members
An axial resonance attenuating apparatus is formed by a disk-shaped attaching member, which is attached to a rotation shaft of a rotation drum apparatus or one of mass objects which are fixed to...
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5777818 |
Magnetic head position detecting apparatus of tape recorder
A magnetic head position detecting apparatus of a tape recorder, which sharply reduces assembly error and which has a simple structure, is provided. The magnetic head position detecting apparatus...
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5770908 |
Motor having variable air gap
An air gap varying motor includes a base, a rotation body, a motor rotor, a motor stator which is fixed in the base, and has an inner surface for contacting and supporting the motor rotor to enable...
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5768046 |
VCR head drum coated with diamond-like hard carbon films and the method and apparatus for manufacturing the same
A head drum is coated with double films, each having different characteristics, by forming a first diamond-like hard carbon film of high degree of hardness and then forming a second diamond-like...
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5734530 |
Head drum assembly incorporating therein parts coated with diamond-like carbon
A head drum assembly for use in a VCR includes a rotating shaft with a diamond-like carbon ("DLC") coating; a rotary drum fitted tightly around the rotating shaft; a stationary drum, fitting around...
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5726826 |
Capstanless helical drive system
A capstanless helical scan recording system (14) comprises a supply reel (24); a take-up reel (26); and a media transport path (20) extending from the supply reel to the take-up reel. A drum (30)...
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5719724 |
Rotary head apparatus for recording and/or reproducing an information track to/from a magnetic tape having predetermined orientation characteristics to prevent unbalance of performance between the channel
A rotary head apparatus for recording and/or reproducing an information track to/from a magnetic tape having predetermined orientation characteristics is constructed by: a first magnetic head...
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5719723 |
Head drum assembly for rotating a rotary drum by generating a load bearing air layer
A head drum assembly for use in a VCR includes a rotary drum, a stationary drum, a motor assembly, and a plurality of piezoelectric bearings. The novel head drum assembly allows smooth rotation by...
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5715112 |
Apparatus for adjusting a gap between transformers in a tape recorder
The head drum assembly for use in a tape recorder comprises a rotating shaft divided arbitrarily into an upper and a lower parts, a rotary drum pressed in and fixed to the upper part of the...
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5682283 |
Rotary head apparatus having short distance between magnetic heads and rotary transformer
A rotary head apparatus including a circuit board with an optimum and shortest distance between magnetic heads of the rotary head apparatus and a rotary transformer thereof. The members used in the...
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5666245 |
Head drum assembly provided with an amplifier therein
A head drum assembly for use in a video cassette recorder ("VCR") includes a rotary drum, a stationary drum, a rotary transformer including a rotor and a stator transformers, and an amplifier. The...
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