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| Number | Title | Issue Date |
| 7401231 | Information recording/playback device and method A system and method are realized which enables valid use of content by preventing unauthorized use of content which is caused by rewriting rights data. A structure is employed in which rights data including use-restriction information on content and DRM data includi... | 07/15/2008 |
| 7102857 | Rotary head drum apparatus capable of positively receiving a splashing adhesive A rotary head drum apparatus includes a stator drum. A rotary drum is provided with a plurality of magnetic heads and rotates the magnetic heads. The rotary drum is mounted for rotational movement with respect to the stator drum. A rotary transformer includes a stat... | 09/05/2006 |
| 6904539 | Method of determining data transfer speed in data transfer apparatus A method of determining a transfer speed of an encoded data signal including a clock signal and a data signal is provided. First, the encoded data signal is decoded to generate a decoded clock signal. Then, a data transfer speed of the encoded data signal is determi... | 06/07/2005 |
| 6867937 | Signal transmission apparatus and signal reproduction apparatus using a rotary transformer The invention provides a signal transmission apparatus using a rotary transformer by which a wide bandwidth and a high transfer rate can be used without a significant increase of the cost. The signal transmission apparatus includes a transmission side circuit and a ... | 03/15/2005 |
| 6404597 | Magnetic head device with feature protecting a conductive wire extending to a magnetic core A core chip includes a magnetic core having a magnetic gap and a coil formed around the magnetic core. A head base includes a first main face on which a wiring pattern is formed, and a second main face on which the core chip is mounted. A conductive wire ... | 06/11/2002 |
| 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 find particular application to a magnetic recording system... | 03/12/2002 |
| 6191907 | Head drum for a magnetic tape recorder A head drum for a magnetic tape apparatus includes a stationary lower cylinder and a rotating upper cylinder on which at least one write/read head is securely arranged and interacts with a magnetic tape with an exchange of electromagnetic signals. Also pr... | 02/20/2001 |
| 6175461 | Rotary head block with rotary transformer having separate channels for power signal and playback signal A reproduction initial stage amplifier at the rotary side of a rotary head apparatus, prevents an adverse affect of a power transmission signal to a reproduction channel, operates such that a signal from a reproduction head 11 of a rotary head 10 is suppl... | 01/16/2001 |
| 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 runs a tape (7) wound helicoidally and a capacitive coupling ... | 07/18/2000 |
| 6084751 | Magnetic recording/reproducing apparatus In a magnetic recording/reproducing apparatus, a power circuit is provided with a transformer having a core with a gap being formed in it, the transformer being positioned so that a direction for connecting a S pole with a N pole created by the leakage ma... | 07/04/2000 |
| 5933289 | Magnetic recording/reproducing device with wireless transmission of position control signal to head transducer on rotary drum The present invention provides a movable magnetic head unit including a signal transmission element. The transmission element transmits by wireless, i.e., through noncontact transmission, a control signal for driving an electromechanical transducing eleme... | 08/03/1999 |
| 5675449 | Magnetic recording/reproducing device with wireless transmission of position control signal to head transducer on rotary drum The present invention provides a movable magnetic head unit including a signal transmission element. The movable magnetic head is mounted upon a rotary drum of a drum assembly which also includes a stationary drum, the rotary and stationary drums being su... | 10/07/1997 |
| 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 amplifier is mounted onto an inner bottom surface of the s... | 09/09/1997 |
| 5515220 | Multielement disk-shaped rotary magnetic media scanners for magnetic media player-recorders A rotary magnetic media scanner for magnetic media player-recorders having a plurality of disk elements where each element is arranged in a simple disk configurations to facilitate manufacture. The disk elements are comprised of high magnetic permeable ma... | 05/07/1996 |
| 5249087 | Rotating head amplifier for VCR A rotating scan device for use with magnetic storage media, including a rotor, multiple magnetic transducers on the rotor with suitable gaps and orientations for writing or reading electronically modulated signals directly to or from magnetic storage medi... | 09/28/1993 |
| 5192923 | Rotary coupler Reception and transmission of radio frequency signals is performed between the rotary portion and the stationary portion via an electromagnetically coupled portion in which a microstrip formed along substantial one lap of the circumference having a length... | 03/09/1993 |
| 4926273 | Apparatus and method for recording and reproducing information signals Magnetic recording and reproducing apparatus including a rotary head drum and power system. The rotary head drum includes at least a rotary head and preamplifier mounted therein. A rotary transformer communicates information signals to/from the rotary hea... | 05/15/1990 |
| 4870522 | Rotary electric coupling device for a rotating head recorder A device for providing rotary electric coupling for a recorder/reader of magnetic tape including at least one magnetic head (21, 22) which is rotated at the periphery of an equatorial slot in a cylindrical drum over which the helically wound tape is cause... | 09/26/1989 |
| 4823218 | Balance compensated rotary magnetic head device A rotary magnetic head device including a fixed cylinder and a rotary cylinder having a tape guide face on the outer peripheries for enabling running of a tape thereon. At least one magnetic head is installed on the rotary cylinder and a first conductive ... | 04/18/1989 |
| 4517615 | Rotary head for magnetic tape record and playback A rotary magnetic head assembly for use in recording and playing back video signals including a rotary head drum, a stationary head drum, and magnetic heads. The rotary head drum is supported by a driving shaft and has an outer surface which is generally ... | 05/14/1985 |
| 4184183 | Field replaceable heads for magnetic tape machine A rotating transducing head drum that mounts a number of transducer heads for sweeping rotation across the surface of a record medium. The head mounts are either of the bimorph, i.e., laterally displaceable leaf type, or of a non-displaceable leaf type si... | 01/15/1980 |
| 4139871 | Eight-head magnetic video tape recording and reproducing apparatus with rotary transformer In a magnetic video tape recording and reproducing apparatus (VTR) having rotary magnetic video heads rotating in a direction substantially perpendicular to the direction of tape travel, the width of the magnetic tape is reduced substantially to one inch ... | 02/13/1979 |
