Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7321307 | Chemical time modification of an object A method for modifying an object involves determining a modification rate for the object, creating a first reservoir and a first wicking channel based on the modification rate, where the first reservoir and the first wicking channel are on the object and the first w... | 01/22/2008 |
| 7254239 | Sound system and method of sound reproduction A sound reproduction system comprises a left and right speakers located in close proximity, and a sound processor which provides audio signals to the pair of speakers. The sound processor preferably derives a cancellation signal from the difference between the left ... | 08/07/2007 |
| 7236836 | System for signal processing and signal transmission A signal processing apparatus includes a device for converting a data stream containing audio packs into packets each having a given area assigned to real data. The audio packs store PCM multiple-channel audio contents information. Another device operates for enabli... | 06/26/2007 |
| 7206648 | Multi-channel audio reproducing apparatus A multi-channel audio reproducing apparatus includes several audio power amplifiers, the number of which is less than the number of channels required for the multi-channel format of the input audio signals. The multichannel audio reproducing apparatus also includes ... | 04/17/2007 |
| 7194135 | Image recording device An image recording device that compresses and records image data is provided wherein noise reduction is recursively performed on the non-compressed image signals and the feedback gain or the filtering characteristic of a recursive noise reduction circuit are control... | 03/20/2007 |
| 7146018 | Multichannel acoustic signal reproducing apparatus A system reproducing surround phonic sound is simply constructed by a multichannel acoustic signal reproducing apparatus having at least a DVD reproducing section. A DVD, a CD, a radio or the like and speakers are provided integrally with the multichannel acoustic s... | 12/05/2006 |
| 7127189 | Heating unit, auxiliary power unit, fixing unit, and image forming apparatus A main controller controls a capacitor charger to charge a capacitor as necessary. A sub-controller controls a power saving mode and stops a power supply to the main controller when shifting to the power saving mode. A charge control circuit compares a terminal volt... | 10/24/2006 |
| 7082201 | Three-dimensional sound reproducing apparatus and a three-dimensional sound reproduction method A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined three-dimensional sound field effect to an input audio signal, thereby... | 07/25/2006 |
| 7065023 | Light spot advancing direction judging device and method, optical head device control device and method, and optical disk recording/reproducing device A device and a method for judging the radial moving direction of light spots formed on the signal recording surface of an optical disc having grooves of two types, which are different from each other in terms of depth and which are arranged along a recording track t... | 06/20/2006 |
| 7006758 | Data recording medium, and data reproducing apparatus An information recording medium on which are recorded substantial data and reproduce control information for reproducing the substantial data, wherein the reproduce control information includes first reproduce control information required for reproducing the substan... | 02/28/2006 |
| 6996040 | Pseudo multi-channel play-back apparatus Compressed audio data for 5.1 channels stored in the DVD-ROM 11A is read by the AC-3 decoder 12 of a pseudo multi-channel stereo play-back apparatus and, after expansion, stored temporarily in a buffer 13, channel by channel. Among stored audio ... | 02/07/2006 |
| 6876775 | Technique for removing blurring from a captured image A technique is provided for removing blurring from an image captured by an imaging device. The imaging device may include a lens and an imaging medium comprised of a plurality of imaging pieces. According to an embodiment, a distance is determined between individual... | 04/05/2005 |
| 5841993 | Surround sound system for personal computer for interfacing surround sound with personal computer A surround sound system for personal computer includes a control card and a PC surround decoder. The control card is a PC interface card for interfacing to the personal computer and draining the 5 VDC and &#b1;12 VDC power from the personal computer as po... | 11/24/1998 |
| 5790500 | Apparatus for recording/reproducing converted four-channel audio signals A recording and reproducing system is arranged to record converted two-channel audio signals obtained by using all four-channel stereophonic audio signals and audio signals of two specific channels included in the four-channel stereophonic audio signals o... | 08/04/1998 |
| 5222059 | Surround-sound system with motion picture soundtrack timbre correction, surround sound channel timbre correction, defined loudspeaker directionality, and reduced comb-filter effects Spectral imbalance (alteration in timbre) when playing home video versions of motion pictures having soundtrack equalized for playback in a room whose room-loudspeaker system is aligned to the standard motion picture theater X-curve is overcome by timbre ... | 06/22/1993 |
| 5067120 | Disk drive apparatus A disk drive apparatus derives 0-order light and 1-order light from an output laser beam of a single laser source, reads a prepit train on a disk by the 0-order light and the 1-order light to reproduce synchronization signals, generates a first synchroniz... | 11/19/1991 |
| 5043970 | Sound system with source material and surround timbre response correction, specified front and surround loudspeaker directionality, and multi-loudspeaker surround Spectral imbalance (alteration in timbre) when playing home video versions of motion pictures is overcome by re-equalization according to a unique correction response curve which compensates for the equalization for playback in large theater-sized auditor... | 08/27/1991 |
| 4807217 | Multi-channel stereo reproducing apparatus The present invention provides a multi-channel stereo reproducing apparatus which can reproduce a recording medium such as an audio disc or the like in which in order that users can enjoy screen musics or the like reproduced at, for example, a concert hal... | 02/21/1989 |
| 4577305 | Stereophonic motion picture photographic sound-tracks compatible with different sound projection formats and record and playback apparatus therefore Discrete four-channel photographic (optical) motion picture sound-tracks are disclosed that are compatible with existing monophonic and stereo variable area (SVA) theatre projection equipment. Six track and four track embodiments are disclosed. In the fou... | 03/18/1986 |
| 4251685 | Reproduction of sound In a sound reproduction system which enables the listener to distinguish between signals from in front and behind as well as signals on the left and the right, only two independent transmission channels are employed. The contributions to the signals in th... | 02/17/1981 |
| 4204091 | Cancellation of interference distortions caused by intermodulation between FM signals on adjacent channels A crosstalk cancellation circuit includes a pair of input terminals to which interference affected FM signals are applied and a pair of output terminals from which distortionless demodulated signals are delivered. For each transmission channel an envelope... | 05/20/1980 |
| 4124784 | Motion picture sound system A system for detecting and reproducing variable-area-type optically recorded audio signals by cyclically detecting substantially only the position of a boundary of the sound track. In one embodiment, the boundary is detected by imaging the boundary onto a... | 11/07/1978 |
| 4121059 | Sound field expanding device In a sound field expanding device, left and right channel sound signals of a two channel stereo are respectively divided into several frequency bands, adjusted on levels and phases, mixed again, and then supplied to loudspeakers, so as to reproduce a natu... | 10/17/1978 |
| 4107729 | Method and apparatus for reproducing signals from a rotating record medium and method and apparatus for making same A method of and apparatus for recovering information from a record medium of the type wherein the information is modulated onto a carrier and recorded in one portion of the record medium and the carrier is recorded in another portion of the record medium.... | 08/15/1978 |
| 4095049 | Non-rotationally-symmetric surround-sound encoding system In a surround-sound encoding system which does not have full circular or square symmetry, a third channel is added to a basic two channel system in such a way that the third channel may be reduced in amplitude or restricted in frequency without substantia... | 06/13/1978 |
| 4086433 | Sound reproduction system with non-square loudspeaker lay-out In a sound reproduction system of the type which enables the listener to distinguish sound from sources extending over 360° of azimuth, compensation is provided for the asymmetry arising when four loudspeakers are located at the corners of a non-square r... | 04/25/1978 |
| 4031336 | Electromagnetic pickup with magnetic gap displacement generator An electro-magnetic cartridge for the reproduction of quadraphonic, stereophonic and/or monaural sound recordings has a balanced magnetic and electrical structure including a replaceable stylus lever-generator assembly which has front and rear pole piece ... | 06/21/1977 |
| 4013841 | Four-channel stereo receiver A four-channel stereo receiver capable of making the four-channel indication, and automatically changing over the four-channel mode operation and the two-channel mode operation or muting the monaural and the two-channel signal, based on the presence or ab... | 03/22/1977 |
| 3997725 | Multidirectional sound reproduction systems In a sound reproduction system of the type which enables the listener to distinguish sound from sources extending over 360° of azimuth, compensation is provided for the asymmetry arising when four loudspeakers are located at the corners of a non-square r... | 12/14/1976 |
| 3987256 | Grooved record playback system with multiple transducers Reproducing cartridge apparatus for producing preferably at least three and most advantageously four channels of electrical signals from a multi-channel signal containing grooved record where the sides of the groove are oriented at angles of 45° from the... | 10/19/1976 |
| 3985978 | Method and apparatus for control of FM beat distortion A method and apparatus is disclosed for reducing crossover modulation distortion generated at a sub-channel and for minimizing phase differences between 4-channel signals that are recorded on a recording medium in a multiple-frequency manner. More specifi... | 10/12/1976 |
| 3982071 | Multichannel sound signal processing system employing voltage controlled amplifiers A circuit for controlling the application of one or more audio signals to a plurality of channels incorporates a series of voltage controlled amplifiers for interconnecting an individual signal source with different channels at different times, and a cont... | 09/21/1976 |
| 3982069 | Decoding apparatus for use in matrix four channel systems of a plurality of types A four channel decoding apparatus comprises means to form signals LT+RT, LT-RT, +jLT+RT; LT+RT, LT-RT; and LT+jRT, LT-jRT, for example, from composite signals LT and RT depending upon the type of the matrix four channel systems and means for additively an... | 09/21/1976 |
| 3979564 | 4-Channel stereo recording and reproducing method A method for recording and reproducing a 4-channel stereo signal wherein the reproduced signal can be used with conventional discrete signal or matrix stereophonic systems. Four related audio signals are matrixed to produce a first main channel audio sign... | 09/07/1976 |
| 3971890 | Method and apparatus for quadraphonic enhancement of stereophonic signals Method and apparatus are described for translating or "encoding" the left and right signals from a stereophonic source such that when the signals are reproduced by a four-channel decoder the resulting sound field is highly simulative of that produced from... | 07/27/1976 |
| 3967063 | Logic for matrix systems for reproducing quadraphonic sound Apparatus for decoding four separate channels of information transmitted on two channels or transduced from a medium having only two separate tracks and presenting it on four loudspeakers to give the listener the illusion of sound coming from a correspond... | 06/29/1976 |
| 3964752 | Methods and devices for recording, engraving and reproducing modulated information in tetraphony A microgroove disk record for monophonic, stereophonic and tetraphonic reproduction of modulated information recorded on four separated tracks one of which corresponds to a left fore channel, another one to a right fore channel, another one to a left rear... | 06/22/1976 |
| 3940560 | Quadriphonic sound pick-up and reproduction devices A sound pick-up and reproducing system, comprising a first and a second pair of directional microphones respectively disposed at a first and a second given distance from the sonic scene to be transmitted, said second distance being greater than said first... | 02/24/1976 |
| 3934086 | Matrix four-channel decoding system To the output side of a matrix four-channel decoder for producing four outputs while controlling the mixing coefficients of left and right composite signals in accordance with the level or instantaneous amplitude relationship between directional audio inp... | 01/20/1976 |
| 3932706 | Signal synthesizing system adaptable for discrete four-channel sound reproducing system and matrix four-channel sound reproducing system The invention discloses a system for synthesizing first and second recording or transmission signals adaptable for both of a discrete four-channel stereo sound reproducing system and a matrix four-channel stereo sound reproducing system. The first recordi... | 01/13/1976 |
