Loaded Circuit Patents (Class 178/45)
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Patent number: 12149863Abstract: A network element of a cable television (CATV) network, comprising an input for upstream signal transmission; one or more diplex filters (210, 212, 214) connectable to said input, the diplex filters (210, 212, 214) comprising bandpass filters for different upstream and downstream frequency bands; a plurality of components arranged to form an upstream signal path, wherein at least one of said components is an upstream amplifier (206c); means (216) for detecting a type of the diplex filter connected between said input and the upstream signal path; means (216) for determining a control signal for adjusting bias current of the upstream amplifier (206c), wherein the control signal is based on at least a type of the diplex filter; and means for adjusting the bias current of the upstream amplifier (206c) based on the control signal.Type: GrantFiled: September 21, 2020Date of Patent: November 19, 2024Assignee: Teleste OyInventors: Jonne Vuorinen, Mika Rintalaulaja, Kari Mäki
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Patent number: 12087466Abstract: A transmission line includes a conductor for signal transmission and an isolating layer covering the conductor. The isolating layer includes a first isolating strand group and a second isolating strand group. The first isolating strand group is wound in a way that forms an S-twist around the conductor along an axis direction the conductor, and the second isolating strand group is wound in a way that forms a Z-twist around the conductor along the axis direction. In an interval from a first position to a second position, including the first position, the first isolating strand group continuously overlaps an outside of the second isolating strand group, and in an interval from the second position to a third position, including the second position, the second isolating strand group continuously overlaps an outside of the first isolating strand group.Type: GrantFiled: September 13, 2021Date of Patent: September 10, 2024Inventor: Tsun Yi Ko
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Patent number: 11582504Abstract: The present invention discloses a signal output circuit applying bandwidth broadening mechanism for an image signal transmission apparatus that includes a first driving circuit and a second driving circuit. The first driving circuit includes a continuous time linear equalizer (CTLE) and is configured to receive a digital input signal to perform a high frequency enhancement thereon to increase a bandwidth of the digital input signal to generate a first output signal, in which a zero point and two poles of a frequency response of the first driving circuit are determined by circuit parameters thereof. The second driving circuit is configured to receive and amplify the first output signal to generate a second output signal for an image receiving apparatus.Type: GrantFiled: February 18, 2022Date of Patent: February 14, 2023Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Tsung-Ming Chen, Cheng-Yu Liu
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Patent number: 9640959Abstract: One embodiment of the present invention is a unique platform. Another embodiment is a unique engine system. Another embodiment is a unique wiring harness system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for one or more of various types of platforms, such as aircraft, ground vehicles, water-borne vessels and stationary platforms; engine systems; and wiring harness systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.Type: GrantFiled: June 30, 2014Date of Patent: May 2, 2017Assignee: Rolls-Royce North American Technologies, Inc.Inventors: Andrew Charles Pickard, Philip Martin Green, Kimberly Nicole Merrill
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Patent number: 9441431Abstract: This device includes a cable (32) having a smooth outer surface (40). The cable (32) includes a central conductor (42) and an annular outer sheath (44). The outer sheath (44) includes a polymer matrix (56) and mechanical reinforcing fibers (58, 60) embedded in the polymer matrix (56). The central conductor (42) includes a solid cylindrical metal core (48) having a smooth outer surface (52), a breaking strength greater than 300 daN and a lineic electrical resistance greater than 30 mohms/m.Type: GrantFiled: December 22, 2010Date of Patent: September 13, 2016Assignee: GEOSERVICES EQUIPEMENTSInventors: Ugo Bernal, Vincent Chatelet, Stephane Polis
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Patent number: 9082526Abstract: Aspects of the present invention provide shielded cables for reducing the incidence of ground loops between connected electronic devices. According to one aspect of the present invention, a shielded cable is disclosed having two inner shield segments and an outer shield. The inner shield segments can each be grounded, but are physically separated from each other by a gap. The external shield is not grounded, and serves to contain EMI generated by signal conductors within the shielded cable and shield the signal conductors against external electrical events.Type: GrantFiled: June 25, 2012Date of Patent: July 14, 2015Assignee: International Business Machines CorporationInventors: Kenneth Arenella, Alma Jaze, Alan H. Knight, Kwok M. Soo Hoo
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Patent number: 9048521Abstract: A broadband waveguide incorporates various reflection suppression techniques to reduce reflections in signals communicated thereby. The waveguide includes one or more filaments that each include a first and second end. A first matrix may be configured proximate the first end(s) while a second matrix may be configured proximate an intermediate location between the first and second ends. A damping material may cover a portion of the filament(s) that extends from the second matrix to the second end(s) (including the second end(s) themselves) and/or the second end(s) of the filament(s) is/are shaped to at least partially suppress reflections of the signal therefrom. When configured with multiple filaments, at least two of the filaments may have differing lengths that extend from the second matrix and also operate to at least partially suppress reflections of a signal.Type: GrantFiled: March 24, 2011Date of Patent: June 2, 2015Assignee: Etegent Technologies, Ltd.Inventors: Christopher George Larsen, Richard Allan Roth, II, Stuart James Shelley, Aaron Collins Hacker, Adam Jacob Hehr
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Patent number: 8154509Abstract: Aspects of the invention provide an electronic paper display system that can include an electronic paper and the writing device. The writing device transmits power and baseband signals by using an electromagnetic coupling between a coil of the writing device and a coil of the electronic paper. The baseband signals, which are encoded by the writing device, are decoded by a decoder of the electronic paper and fed to the control circuit to illustrate images on a bi-stable display unit. The electronic paper has a power storage that temporarily stores power transmitted by using electromagnetic coupling for absorbing fluctuation of power in both transmission and consumption. The asynchronous design of this invention brings both robustness and low-power consumption.Type: GrantFiled: August 2, 2007Date of Patent: April 10, 2012Assignee: Seiko Epson CorporationInventor: Nobuo Karaki
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Patent number: 8049712Abstract: Aspects of the invention provide an electronic paper display system that can include an electronic paper and the writing device. The writing device transmits power and baseband signals by using an electromagnetic coupling between a coil of the writing device and a coil of the electronic paper. The baseband signals, which are encoded by the writing device, are decoded by a decoder of the electronic paper and fed to the control circuit to illustrate images on a bi-stable display unit. The electronic paper has a power storage that temporarily stores power transmitted by using electromagnetic coupling for absorbing fluctuation of power in both transmission and consumption. The asynchronous design of this invention brings both robustness and low-power consumption.Type: GrantFiled: August 2, 2007Date of Patent: November 1, 2011Assignee: Seiko Epson CorporationInventor: Nobuo Karaki
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Patent number: 7834843Abstract: Aspects of the invention provide an electronic paper display system that can include an electronic paper and the writing device. The writing device transmits power and baseband signals by using an electromagnetic coupling between a coil of the writing device and a coil of the electronic paper. The baseband signals, which are encoded by the writing device, are decoded by a decoder of the electronic paper and fed to the control circuit to illustrate images on a bi-stable display unit. The electronic paper has a power storage that temporarily stores power transmitted by using electromagnetic coupling for absorbing fluctuation of power in both transmission and consumption. The asynchronous design of this invention brings both robustness and low-power consumption.Type: GrantFiled: August 3, 2005Date of Patent: November 16, 2010Assignee: Seiko Epson CorporationInventor: Nobuo Karaki
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Patent number: 4920233Abstract: A cable for use in carrying electrical signals in the audio frequency range. The cable includes an elongate metallic core which can be positioned at the center of the cable. In the case of the coaxial cable, a sleeve of a dielectric material is positioned about the core and a metallic shield is located outwardly of the sleeve and coaxially with the core. The cable also includes a layer formed of ferrite positioned between the sleeve and the shield which substantially increases the inductance of the cable without a corresponding substantial increase in the energy loss so that the cable exhibits substantially constant phase velocity characteristics across the audio frequency band. The ferrite layer can be formed by a series of discrete ferrite sleeves or the ferrite layer might be formed by an extruded thermoplastic having a high loading of ferrite powder. A method of using the cable is also disclosed.Type: GrantFiled: August 23, 1988Date of Patent: April 24, 1990Assignee: Cooper Industries, Inc.Inventor: John W. Kincaid
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Patent number: 4857676Abstract: Method of making insulated conductor wire in which a homogeneous mixture of a dielectric carrier and magnetically permeable particles is sprayed onto the wire to deposit a layer of the mixture on the wire. The layer is then hardened to provide an insulating layer with the particles substantially uniformly dispersed therein.Type: GrantFiled: October 13, 1988Date of Patent: August 15, 1989Assignee: Northern Telecom LimitedInventors: John N. Garner, G. Douglas Baxter, James C. Grant
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Patent number: 4638272Abstract: A lossy transmission line in which the effective length of the line is reduced by providing resistive ferrite beads spaced along the line to provide constant power loss per unit length. Inductance ferrite beads may be included equally spaced along the line. Resistive beads are located with increasing frequency per unit length from the beginning of the line until a maximum bead density per unit length is achieved. The lossy line is suitable as a terminating unit for a portable travelling wave antenna and in other situations where size reduction is desirable.Type: GrantFiled: January 2, 1985Date of Patent: January 20, 1987Assignee: The Commonwealth of AustraliaInventor: Richard A. Ive
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Patent number: 4565591Abstract: Making an insulated electrical conductor having an insulation layer formed from dielectric carrier with magnetically permeable particles dispersed therein in which the conductor bearing the layer is passed through a magnetic field to cause an increase in magnetization of magnetic domains of the particles towards a single direction.Type: GrantFiled: April 6, 1984Date of Patent: January 21, 1986Assignee: Northern Telecom LimitedInventor: Michael A. Shannon
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Patent number: 4413240Abstract: There is disclosed an automatic line buildout circuit which includes in its signal path two variable filters, each implemented by a transconductance operational amplifier circuit. Each filter exhibits a transfer function pole with a frequency which is directly related to a control current applied to that filter. At a point in the signal path after the two variable filters, there is a peak detector which provides an output level proportional to the peak amplitude of the signal in the path, and therefore proportional to the cable length. From the peak detector output level, there is derived for each of the variable filters a control current, related to the output level by a preselected function. For each variable filter, the associated function expresses the relation between cable length and the filter cutoff frequency which is required for proper equalization.Type: GrantFiled: November 9, 1981Date of Patent: November 1, 1983Assignee: Rockwell International CororationInventor: Harry J. Dyke
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Patent number: 4027259Abstract: In a system employing half-span preemphasis of transmitted signals on a cable pair telephone line, equalization is accomplished in a circuit arrangement including first and second complementary constant-resistance networks having the input impedances thereof in the emitter and collector circuits, respectively, of a common emitter amplifier. These impedances control the feedback and gain of the amplifier such that their effects are additive in a particular manner in the collector-output circuit thereof. The terminating resistances of the networks are the resistances produced by a pair of differentially controlled thermistors. A DC error signal that is proportional to line length controls the current driving the thermistors and thus the resistances thereof. When the circuit arrangement is at half-span spacing, a difference circuit causes the terminating resistances of the thermistors to be the same values, which make the impedance characteristics of the networks such that the net gain of the amplifier is flat.Type: GrantFiled: June 14, 1976Date of Patent: May 31, 1977Assignee: GTE Automatic Electric Laboratories IncorporatedInventor: Neale A. Zellmer
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Patent number: 4009340Abstract: A rectangular loading coil case has front, back, side and end panels, with cable entry and exit provided in one end panel, and with a support structure attached to, for example, the front panel and comprising rods extending across the case with a series of beams extending in opposed pairs and supported on the rods by spacer members positioned on the rods. Assembled magazines of loading coils are supported on the beams, each magazine supported at one end by one of a pair of beams and supported at the other end by the other of the pair of beams. A plurality of magazines are carried by each pair of beams, to form a layer. The number of layers can vary.Type: GrantFiled: September 22, 1975Date of Patent: February 22, 1977Assignee: Northern Electric Company LimitedInventors: George Debortoli, Peter McGivery Chase
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Patent number: RE29549Abstract: .[.A package for holding a plurality of encapsulated electrical components comprising a cylindrical case having a lengthwise slot through which the leads of the components extend, and an adjustable mounting means carried by the case which is offset from the lengthwise slot..]..Iadd.In a telephone communication system there is provided a plurality of individual encapsulated electrical components for improving the voice transmission which are held in electrical disconnected relationship and in an end-to-end relation in an elongated hollow, flexible elastic case having a continuous slot with the width of the slot and the elasticity of the flexible case cooperating to allow a selected electrical component to be manually removed through the slot. An electrical component assembly which is capable of being disposed within the case and a mounting bar for mounting a plurality of the electrical component packages are also disclosed. .Iaddend.Type: GrantFiled: January 7, 1974Date of Patent: February 21, 1978Assignee: Coil Sales & Manufacturing CompanyInventor: Joseph T. Charles