Patents Assigned to RGB Systems, Inc.
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Patent number: 7839215Abstract: A method and apparatus for power conversion in a class D amplifier is provided. The power conversion is achieved using synchronous rectifiers in a regulated half bridge power supply, taking the sum of the positive and negative rails as feedback, in order facilitate energy transfer between positive and negative output rails. This minimizes the effects of off side charging and rail sag, as well as achieving good line regulation, while allowing use of very small, low value output capacitors.Type: GrantFiled: June 12, 2009Date of Patent: November 23, 2010Assignee: RGB Systems, Inc.Inventor: Eric Mendenhall
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Patent number: 7821534Abstract: A method and apparatus are presented for dynamically testing video equipment. One or more test patterns utilize different regions of video signal characteristics. Adjustment is made to the video characteristics of a region until a perceived parameter of the region matches a second region. A performance parameter of said video equipment is determined from said adjustment.Type: GrantFiled: May 5, 2008Date of Patent: October 26, 2010Assignee: RGB Systems, Inc.Inventor: Steve Somers
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Patent number: 7808557Abstract: A method and apparatus for automatic reduction of noise in video signals transmitted over conductors is presented. The present invention provides an adjustable amount of noise filtering matched to the amount of gain provided by an adjustable gain amplifier to a received video signal. One or more stages of a multi-stage discrete gain amplifier is provided with a corresponding noise filter circuit. The filter circuit is matched to the frequency response of and the amount of gain provided by the discrete gain amplifier stage. When the amplifier stage is applied to the received signal, the corresponding noise filter for that stage is invoked as well. In that manner, the amount of noise filtering applied to a video signal automatically varies with the amount of amplification provided to that signal.Type: GrantFiled: June 23, 2006Date of Patent: October 5, 2010Assignee: RGB Systems, Inc.Inventor: Raymond William Hall
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Patent number: 7796194Abstract: A video format identification system includes a master clock circuit which provides timing and counting signals, a synchronization activity detector operatively coupled to the master clock circuit, and a synchronization width qualifier configured to filter out noise or reference burst signals from showing up as sync signals. The system also includes a synchronization detector which regulates the rate of the incoming sync signal, a color burst sampler providing a window for sampling a reference color burst after the sync signal has occurred, and a color burst detector which looks for at least three transitions from a burst signal before it qualifies the as an appropriate reference color burst. A format sample timer generates sample clock signals. A format sample counter produces “take format” signals which are utilized by a set of format counter. The system further includes a video format identifier which enables a particular video format to be directed to a respective video connector.Type: GrantFiled: September 5, 2007Date of Patent: September 14, 2010Assignee: RGB Systems, Inc.Inventor: Raymond William Hall
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Patent number: 7787057Abstract: A feedback circuit for restoration of DC in video signals is presented. A sample pulse representing the back porch of an incoming video signal is generated from the horizontal sync signal. The sample pulse triggers a sample and hold circuit to acquire the correct offset voltage in the output signal during this back porch period. The offset voltage feeds back through a summing node upstream of either the circuit causing the offset or an input amplifier thereby restoring the video signal to the desired DC voltage level with respect to ground.Type: GrantFiled: August 22, 2006Date of Patent: August 31, 2010Assignee: RGB Systems, Inc.Inventors: Raymond William Hall, Donald E. Parreco
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Publication number: 20100201887Abstract: In accordance with at least one embodiment, a first representation of a first gamma curve is stored in a look-up table, a second representation of a second gamma curve is stored in a look-up table, and a video signal is modified in accordance with an interpolation of at least a portion of the first representation of the first gamma curve and at least a portion of the second representation of the second gamma curve. In accordance with at least one embodiment, the at least a portion of the first representation of the first gamma curve is multiplied by a one's complement of a normalized weight factor, the at least a portion of the second representation of the second gamma curve is multiplied by the normalized weight factor, and the results are added together to obtain an output video signal.Type: ApplicationFiled: October 26, 2009Publication date: August 12, 2010Applicant: RGB Systems, Inc., a California corporationInventor: Michael Bakhmutsky
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Patent number: 7738037Abstract: A method and apparatus for detecting and correcting motion artifacts in interlaced video signal converted for progressive video display. A correction is applied where interlaced video material is determined to originate from film source, thereby having been converted to video using a process known as 3-2 pulldown. Where the video material is not a result of the 3-2 pulldown process, a check is made for the presence of “pixel motion” so that corrections may be applied to smooth out the pixel motion. To determine 3-2 pulldown or field motion, a video field is compared to the field prior to the previous field to generate field error. Field errors are generated for five consecutive fields and a local minimum error repeated every five fields indicate the origination of the video material from film source using the 3-2 pulldown process.Type: GrantFiled: October 29, 2004Date of Patent: June 15, 2010Assignee: RGB Systems, Inc.Inventors: Che Wing Tang, Dung Duc Truong
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Publication number: 20090309658Abstract: A method and apparatus for power conversion in a class D amplifier is provided. The power conversion is achieved using synchronous rectifiers in a regulated half bridge power supply, taking the sum of the positive and negative rails as feedback, in order facilitate energy transfer between positive and negative output rails. This minimizes the effects of off side charging and rail sag, as well as achieving good line regulation, while allowing use of very small, low value output capacitors.Type: ApplicationFiled: June 12, 2009Publication date: December 17, 2009Applicant: RGB SYSTEMS, INC.Inventor: ERIC MENDENHALL
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Patent number: 7501889Abstract: The present invention provides lossless switching by configuring the output inductor so that the ripple current amplitude at load conditions results in small negative current during switching. The reconfigured output inductor results in increased ripple current amplitude. This increased ripple amplitude may be further controlled using zero ripple steering techniques to eliminate ripple at the output capacitor. A ripple steering technique involves adding a secondary output to the class D amplifier which steers the switching ripple away from the main output thus substantially relieving the main output from a major artifact of prior art Class D amplifiers.Type: GrantFiled: July 28, 2006Date of Patent: March 10, 2009Assignee: RGB Systems, Inc.Inventor: Eric Mendenhall
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Publication number: 20090033184Abstract: An external power supply support system includes an enclosure with indentations spanning its top and side surfaces in a substantially horizontal fashion, and a caddy with a shell-like body configured to engage at least a portion of the indented power supply enclosure. The shell-like caddy body is provided with mounting apertures spaced according to standard rack rail aperture spacing. The mounting apertures emanate from a series of integral structures bulging from the bottom surface of the shell-like caddy body. The bulging aperture structures in combination with several integral structural ribs are configured collectively to provide a substantially flat and elevated interface suitable for secure mounting of the caddy to a support surface.Type: ApplicationFiled: July 31, 2007Publication date: February 5, 2009Applicant: RGB Systems, Inc.Inventors: David Pincek, Carlo Espiritu, Jeff Hatley, Nerio Perez, Stanley S. Coe
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Publication number: 20090013098Abstract: A flexible electronic asset management system using Ethernet connectivity for electronic devices is presented. The invention enables multiple electronic devices to be controlled, monitored, and accessed from any browser connected to a computer network. A flattened stack approach is used to process network packet data. The flattened stack approach treats the network packet as a single string of data and uses the first few bytes of information to decide whether to drop or process the incoming data thus providing for faster network traffic processing. Since the lowest layer of the OSI stack has knowledge of what applications are active in the upper layers, the flattened stack allows the packet to be discarded at the earliest possible point so no processing power is wasted. The flattened stack also organizes its check/processing based on the raw data stream thus minimizing buffer requirements and providing for easier implementation into hardware.Type: ApplicationFiled: September 17, 2008Publication date: January 8, 2009Applicant: RGB SYSTEMS, INC.Inventor: BRIAN RICHARD TARACI
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Publication number: 20080314614Abstract: A mirrored arc geometrical arrangement of two conductors configured to perform similar functions as a traditional twisted pair of wires is presented. The mirrored arc conductor pair occupies the same physical space required by prior art twisted pair cable designs. Each conductor pair includes two inward-facing arc shaped conductors placed within a dielectric material. Each arc shaped conductor may be constructed from thin foil strips of a conducting metal or from a group of separate bare metal conductors which are placed side by side in intimate contact so as to effectively create the same mirrored arc geometry. The conductor pairs may subsequently be bundled to create a data network cable bundle.Type: ApplicationFiled: September 5, 2008Publication date: December 25, 2008Applicant: RGB SYSTEMS, INC.Inventor: STEVE SOMERS
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Patent number: 7455271Abstract: A speaker mount includes a support structure attachment, an adjustable mount connected to the structure attachment and including a first connector, and a speaker attachment including a second connector. The first and second connectors may selectively be connected or disconnected, permitting a speaker to be connected to and disconnected from the remainder of the mount. The first connector is mounted to a ball. A lock plate is mounted at an opposing side of the ball from the first connector. A fastener controls the distance between the first connector and the lock plate. In one position, the fastener draws the lock plate and first connector towards one another, fixing the lock plate in a position on the ball, and in another position allows the first connector to be moved relative to the ball. The mount permits orientation of a speaker in a variety of positions relative to a support structure.Type: GrantFiled: August 17, 2005Date of Patent: November 25, 2008Assignee: RGB Systems, Inc.Inventors: David Pincek, Andrew C. Edwards, William Cameron Stewart, Jr., Xiaozheng Lu, Stanley S. Coe
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Patent number: 7451238Abstract: A flexible electronic asset management system using Ethernet connectivity for electronic devices is presented. The invention enables multiple electronic devices to be controlled, monitored, and accessed from any browser connected to a computer network. A flattened stack approach is used to process network packet data. The flattened stack approach treats the network packet as a single string of data and uses the first few bytes of information to decide whether to drop or process the incoming data thus providing for faster network traffic processing. Since the lowest layer of the OSI stack has knowledge of what applications are active in the upper layers, the flattened stack allows the packet to be discarded at the earliest possible point so no processing power is wasted. The flattened stack also organizes its check/processing based on the raw data stream thus minimizing buffer requirements and providing for easier implementation into hardware.Type: GrantFiled: October 3, 2003Date of Patent: November 11, 2008Assignee: RGB Systems, Inc.Inventor: Brian Richard Taraci
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Publication number: 20080273089Abstract: A method and apparatus are presented for dynamically testing video equipment. One or more test patterns utilize different regions of video signal characteristics. Adjustment is made to the video characteristics of a region until a perceived parameter of the region matches a second region. A performance parameter of said video equipment is determined from said adjustment.Type: ApplicationFiled: May 5, 2008Publication date: November 6, 2008Applicant: RGB SYSTEMS, INCInventor: Steve Somers
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Patent number: 7435907Abstract: A mirrored arc geometrical arrangement of two conductors configured to perform similar functions as a traditional twisted pair of wires is presented. The mirrored arc conductor pair occupies the same physical space required by prior art twisted pair cable designs. Each conductor pair includes two inward-facing arc shaped conductors placed within a dielectric material. Each arc shaped conductor may be constructed from thin foil strips of a conducting metal or from a group of separate bare metal conductors which are placed side by side in intimate contact so as to effectively create the same mirrored arc geometry. The conductor pairs may subsequently be bundled to create a data network cable bundle.Type: GrantFiled: November 6, 2006Date of Patent: October 14, 2008Assignee: RGB Systems, Inc.Inventor: Steve Somers
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Patent number: D581901Type: GrantFiled: June 15, 2007Date of Patent: December 2, 2008Assignee: RGB Systems, Inc.Inventors: Dave Pincek, Andrew C. Edwards, William Cameron Stewart, Jr., Stanley S. Coe
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Patent number: D583802Type: GrantFiled: June 15, 2007Date of Patent: December 30, 2008Assignee: RGB Systems, Inc.Inventors: Dave Pincek, Andrew C. Edwards, William Cameron Stewart, Jr., Stanley S. Coe
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Patent number: D626542Type: GrantFiled: July 7, 2009Date of Patent: November 2, 2010Assignee: RGB Systems, Inc.Inventors: David Libman, Tuan Tran, Robert Chaloupecky
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Patent number: D628098Type: GrantFiled: August 25, 2009Date of Patent: November 30, 2010Assignee: RGB Systems, Inc.Inventors: David Libman, Tuan Tran, Robert Chaloupecky