Patents by Inventor David E. Johnston
David E. Johnston has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8027743Abstract: Systems and methods for editing digital audio data are provided. In one implementation, a method is provided that includes receiving digital audio data. Input is received selecting a noise threshold identifying a level at which one or more segments of audio data are considered to be noise. The noise threshold is associated with a plurality of parameters of the audio data and applicable to a plurality of frequency bands of the audio data. A first segment and second segment of the digital audio data are analyzed at a selected frequency band to identify noise. When the audio data in the first segment exceeds the noise threshold, the first segment is identified as including a first noise and the audio data is compressed. When audio data in the second segment exceeds the noise threshold, the second segment is identified as including a second noise and the audio data is compressed.Type: GrantFiled: October 23, 2007Date of Patent: September 27, 2011Assignee: Adobe Systems IncorporatedInventor: David E. Johnston
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Patent number: 7899565Abstract: Systems, methods, and computer program products for displaying visual representations of features of audio data are provided. In one implementation, a computer-implemented method is provided. Audio data is received. A visual representation of the audio data showing pan position is displayed. Displaying the visual representation includes calculating pan position data comprising one or more pan positions associated with audio data per unit time and plotting the calculated pan position data.Type: GrantFiled: June 11, 2009Date of Patent: March 1, 2011Assignee: Adobe Systems IncorporatedInventor: David E. Johnston
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Patent number: 7640069Abstract: Systems and methods for audio editing are provided. In one implementation, a computer-implemented method is provided. The method includes displaying audio data in a visual form. A user input is received demarcating an arbitrary region within the visual display of the audio data. A portion of the audio data is isolated corresponding to the region demarcated by the user. The isolated portion of the audio data is edited and the edited audio data is mixed into the audio data to create edited audio data.Type: GrantFiled: March 30, 2006Date of Patent: December 29, 2009Assignee: Adobe Systems IncorporatedInventor: David E. Johnston
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Patent number: 7610110Abstract: Systems, methods, and apparatus, including computer program products, are provided for displaying visual representations of features of audio data. In general, in one aspect, a computer-implemented method and computer program product is provided. Audio data are received. The audio data are separated into a plurality of samples. Stereo phase data is calculated for each sample of the plurality of samples. The calculated stereo phase data is displayed.Type: GrantFiled: June 2, 2006Date of Patent: October 27, 2009Assignee: Adobe Systems IncorporatedInventor: David E. Johnston
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Patent number: 7548791Abstract: Systems, methods, and computer program products for displaying visual representations of features of audio data are provided. In one implementation, a computer-implemented method is provided. Audio data is received. A visual representation of the audio data showing pan position is displayed. Displaying the visual representation includes calculating pan position data comprising one or more pan positions associated with audio data per unit time and plotting the calculated pan position data.Type: GrantFiled: May 18, 2006Date of Patent: June 16, 2009Assignee: Adobe Systems IncorporatedInventor: David E. Johnston
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Publication number: 20090070674Abstract: This specification describes technologies relating to editing digital audio data. In some implementations, a computer-implemented method is provided. The method includes displaying a visual representation of audio data, receiving an input selecting a selected portion of audio data within the visual representation, the selecting including applying a brush tool to the visual representation of the audio data, and editing the selected portion of audio data including determining a degree of opacity for the selected audio data and applying an editing effect according to the degree of opacity.Type: ApplicationFiled: January 30, 2008Publication date: March 12, 2009Applicant: ADOBE SYSTEMS INCORPORATEDInventor: David E. Johnston
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Patent number: 6729624Abstract: A radial shaft seal for dynamic applications is disclosed. The shaft seal has a case member and a resilient sealing body attached to the case member. The sealing body includes an annular elastomeric member and a resinous ring. The elastomeric member has a radially extending section and a distal end. The resinous ring has a radially extending portion and an edge. The radially extending section is contiguous to the radially extending portion to form a composite seal lip body. The composite seal lip body, as installed, is positioned so that the distal end of the radially extending section and the edge of said radially extending portion engage the shaft in fluid tight relation by the elastomeric member and by the reaction forces of the resinous ring. Therefore, a portion of the reaction forces is shared by the edge and the distal end so as to reduce the wear in the distal end.Type: GrantFiled: February 20, 2001Date of Patent: May 4, 2004Assignee: Freudenberg-NOK General PartnershipInventor: David E. Johnston
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Publication number: 20020138435Abstract: A method and system for controlling distribution of content through a communications network uses a second, parallel network for delivery of a transaction indicia to a requesting party. The use of the parallel network enables the transaction indicia to be forwarded to the party independently of the communications network, thereby reducing the probability of a party fraudulently obtaining delivery of the content. Additionally, information associated with the parallel network can be used to restrict distribution of the content to parties within a predetermined domain, such as, for example, a geographical region. The content may be delivered to the party in an encrypted form, preferably using an encryption algorithm and key designed to enable decryption of the content on only the content delivery device from which the request for the content was originated.Type: ApplicationFiled: March 26, 2001Publication date: September 26, 2002Inventors: L. Lloyd Williams, Alexander Markman, David E. Johnston, William B. Crago
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Publication number: 20020122544Abstract: A system and method provide a call service features in response to call control information conveyed by a monitored bearer channel in a telecommunications network. A bearer channel monitor captures the call control information and relays the information to a call control application server. The call control application server analyzes the call control information, and provides call control instructions to a call control node that operates in the telecommunications network to effect the call service. The call control node serves as one or more virtual switching points in the network to directly control call routing without disconnecting a called or calling party, unless required as part of a service feature. Control from a center of the telecommunications network provides rapid and efficient call control without use of edge devices or duplication of bearer channels in the network.Type: ApplicationFiled: March 2, 2001Publication date: September 5, 2002Inventors: L. Lloyd Williams, Alexander Markman, David E. Johnston
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Patent number: 6428013Abstract: An improved dual lip radial shaft seal is disclosed. The free end of the dual lip seal extends toward the air side of the seal. Optionally, the dual lip seal has an oil side excluder lip seal, an air side dust excluder lip seal, an elastomeric static seal extending from the elastomeric portion of the dual lip seal. In another optional embodiment, a relief groove is formed in the seal. A unitized seal version is also disclosed with two embodiments.Type: GrantFiled: January 28, 2000Date of Patent: August 6, 2002Assignee: Freudenberg-Nok General PartnershipInventors: David E. Johnston, Milton Griswold, David Sakata
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Patent number: 6409177Abstract: A radial shaft seal with a membrane is disclosed. The surface of the membrane is in sealing contact with the shaft. A plurality of inclined waves are formed in the surface in response to shear stresses formed by movement of one of the support rings relative to the other. The inclined waves are generally elliptical in shape and form an undulating surface. The direction of the inclined waves can be changed in response to shaft rotation.Type: GrantFiled: May 31, 2000Date of Patent: June 25, 2002Assignee: Freudenberg-Nok General PartnershipInventor: David E. Johnston
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Patent number: 6073933Abstract: A washer and dirt excluder for use with a seal. The washer and dirt excluder includes a flexible ring where that ring is in contact with an outer flange. The washer and dirt excluder further includes a stopper member located at a center point of the flexible ring. The washer and dirt excluder also includes a protrusion extending from a side of the washer opposite the stopper.Type: GrantFiled: March 11, 1998Date of Patent: June 13, 2000Assignee: Freudenberg-NOK General PartnershipInventor: David E. Johnston
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Patent number: 5921555Abstract: A uni-directional seal member for use on a shaft includes a rigid shell, a support member in contact with the rigid shell, and a resilient sealing member in contact with the support member and an insert washer. The sealing member has a sealing face, where that sealing face has a contact area having a radially extending profile of a cyclically repeating shape.Type: GrantFiled: April 10, 1997Date of Patent: July 13, 1999Assignee: Freudenberg-NOK General PartnershipInventor: David E. Johnston
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Patent number: 5791658Abstract: A shaft seal of the type utilizing a metal support element or seal case which fits or is inserted into a housing. The seal includes a seal element extending radially inward which when disposed over the shaft causes the seal to flex about a flex section thus applying a contacting force to a seal lip. The seal lip includes a plurality of radial undulations along the seal face, said undulations radial with respect to the axis of the shaft. Said seal lip further including a static seal for engaging the outer circumferential surface of the shaft. The seal element is formed of a semi-rigid material such as a fluorinated resin or thermo-plastic elastomer. Such seals exhibit high-wear characteristics opposed to the low-wear characteristics of an elastomer. Further, the seal element includes a plurality of symmetrical undulations which provide a hydro-dynamic pumping effect to pump any fluid migrating along the shaft/seal interface back into the sealed space.Type: GrantFiled: January 31, 1997Date of Patent: August 11, 1998Assignee: Freudenberg-NOK General PartnershipInventor: David E. Johnston
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Patent number: 5427387Abstract: A radial shaft sealing ring having a sealing axis and a sealing lip of polymer material is disclosed. The ring contacts the circumference of a shaft against which a seal is formed via a sealing lip halving ribs that are evenly distributed in the circumferential direction and which project radially inward. The sealing lip is delimited on the inside by a hollow-conical inner surface, which is widened in diameter in the direction of the side facing away from the sealed space. On the side of the sealing lip facing away from the space to be sealed, the inner surface forms a first angle with the sealing axis, which is 0.02 to 0.5 times as great as a second angle formed by this inner surface on the side of the sealing lip facing the sealed space and by the sealing axis. The ribs are formed as a corrugation of the inner surface which continues only in the circumferential direction along a circular circumferential line.Type: GrantFiled: January 15, 1993Date of Patent: June 27, 1995Assignee: Firma Carl FreudenbergInventor: David E. Johnston
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Patent number: 5380660Abstract: A method of reducing the loss of differentiative functions of cells cultured in culture medium containing serum which includes an inhibitor of cellular differentiation. The method includes treating the serum or serum-containing medium to remove or inactivate the inhibitor.Type: GrantFiled: October 5, 1992Date of Patent: January 10, 1995Assignee: New England Medical Center Hospitals, Inc.Inventors: Douglas M. Jefferson, David E. Johnston
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Patent number: 5348312Abstract: A cassette seal for sealing off the gap between a bore hole and a shaft. The seal includes an inner ring which is secured to the shaft and has a groove open radially to the outside. The seal also includes an outer ring secured in the bore hole with a radial projection of a flange-type design that engages with the groove. The groove is defined in the axial direction by end faces turned toward each other. A sealing lip secured in the area of the inner circumference to the radial projection is formed from a polymer material. At least the inner ring is formed from a plastically deformed sheet metal. The sealing lip sealingly contacts the inner ring in the area of one end face. The inner ring is designed in one piece and is provided in the area of both axial ends with ring projections, which are produced by a plastic deformation and project radially to the outside. The outer ring is limited bounded in the axial direction on both sides by range spacers formed from a polymer material.Type: GrantFiled: June 18, 1992Date of Patent: September 20, 1994Assignee: Firma Carl FreudenbergInventor: David E. Johnston
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Patent number: 5190299Abstract: A radially undulating shaft seal having a seal axis and a lip of polymeric material that surrounds the shaft to be sealed. The lip is demarcated on the inside by an inner surface that tapers out in the form of a hollow cone toward the side facing away from the space being sealed; the lip also has ribs that project radially inward distributed uniformly around it. The ribs (3) consist of undulations propagated along the inner surface (2.1) parallel with the circumference. The difference between the adjacent maximal and minimal intervals (4 & 5) along the circumference between the inner surface and the axis (6) is less than 0.3 mm.Type: GrantFiled: October 23, 1991Date of Patent: March 2, 1993Assignee: Firma Carl FreudenbergInventor: David E. Johnston
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Patent number: 5123661Abstract: A casing component, such as a crankcase end cover of an automobile engine, has a fluid seal, such as an oil seal, incorporated with the component by being molded on to a flange which is an integral part of the component.Type: GrantFiled: March 4, 1991Date of Patent: June 23, 1992Inventors: David E. Johnston, Rui de Jesus Lopes
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Patent number: 4855583Abstract: An identification card contains retrievable identification data in at least two formats. One format comprises a magnetic material that stores magnetically encoded data. Another format comprises electronic circuitry that stores electronically encoded data. The magnetically encoded data on the card may be retrieved by inserting the identification card into a reader having magnetic sensors. The electronically encoded data on the card may be transmitted from the card as a radio frequency signal that incorporates the data, to a remote sensor that receives and processes the radio frequency, data encoded signal. A structure for the identification card comprising these two data storage formats as well as a method of producing such an identification card is described.Type: GrantFiled: August 17, 1987Date of Patent: August 8, 1989Assignee: Figgie International, Inc.Inventors: Steven A. Fraser, David E. Johnston, Reece D. Metzger