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Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
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| Number | Title | Issue Date |
| 8145059 | Circuit topologies for high speed, low cost optical transceiver components A topology for optical transceiver components comprises an electrical signal interface stage, a data timing and signal reformatting stage, and an optical fiber interface stage. Unlike transceiver components known in the art, functions having signals with the most ji... | 03/27/2012 |
| 8145060 | Passive optical network transceiver with temperature compensation circuit A passive optical network transceiver includes an avalanche photodiode, a bias voltage generator for supplying a bias voltage to the avalanche photodiode, a temperature detector for measuring the operating temperature of the avalanche photodiode, a memory for storin... | 03/27/2012 |
| 8081879 | System for dynamically optimizing a decision threshold voltage in an optical transponder A transponder having a dynamic remapping circuit remaps a value of decision threshold voltage Vdtc and a value of optical power RXP to a reference voltage Vref to minimize the bit error rate BER of a communication system. The dynamic remapping circuit implements a b... | 12/20/2011 |
| 8041226 | Optical transceiver with equalizing function and a method to setup the optical transceiver An optical transceiver and a method to setup the optical transceiver are disclosed, where the transceiver has a function to compensate the distortion and the dispersion due to the limited bandwidth of the electrical signal line, that of the active devices, and that ... | 10/18/2011 |
| 8014680 | Optical transceiver and method of controlling optical output jitter using the same An optical transceiver which can effectively reduce optical output jitter when an error is made during designing and manufacturing of a printed circuit board (PCB), and a method of controlling optical output jitter using the optical transceiver are provided. The opt... | 09/06/2011 |
| 7917036 | Bi-directional optical module An optical transceiver is provided which includes: a bi-directional optical subassembly; a printed circuit board which transmits and receives light for the bi-directional optical subassembly; and an outer casing which covers the bi-directional optical subassembly an... | 03/29/2011 |
| 7917035 | End-user optical transceiver unit with transmit signal attenuation A transceiver unit for use at an end-location in a communications network includes a downstream monitor configured to monitor downstream optical signals that travel from a service provider to the end-location. The downstream optical signals carry downstream data for... | 03/29/2011 |
| 7881615 | Dynamic digital diagnostic alerts Alerts, such as laser driver current alarms, are triggered in an optoelectronic device based on dynamic digital diagnostics, such as operating temperature. Optoelectronic devices may execute microcode structured to represent a formulaic relation between a first para... | 02/01/2011 |
| 7835648 | Automatic selection of data rate for optoelectronic devices Automatic selection and setting an operational data rate of an optoelectronic device. In particular, an integrated circuit includes a data rate select input for the selection and setting of the operational data rate. The integrated circuit internally generates a los... | 11/16/2010 |
| 7761010 | Optical transponder Methods and apparatus are provided in accordance with the present invention in which a control mechanism, such as for example, a microcontroller, provides an interface between an optical transponder and an external control system, such that monitoring and controllin... | 07/20/2010 |
| 7720387 | Microcode-driven calculation of temperature-dependent operational parameters in an optical transmitter/receiver An optical transceiver (or transmitter or receiver) that uses microcode that represents a formulaic relation between temperature and an appropriate value for an operational parameter given the temperature. The microcode is further structured such that when loaded in... | 05/18/2010 |
| 7660532 | Optical transceiver module and calibration method thereof A calibration method of an optical transceiver module includes the steps of receiving an input voltage, detecting an optical signal for generating an input power based on the optical signal, generating a compensating power based on the input voltage, and generating ... | 02/09/2010 |
| 7657186 | Consistency checking over internal information in an optical transceiver A method that enables an optical transceiver to perform consistency checking, such as Cyclic Redundancy Checking (CRC), over internal information stored in the transceiver's memory while the transceiver is in operation. The optical transceiver includes a system memo... | 02/02/2010 |
| 7639952 | Calculation of laser slope efficiency in an optical transceiver module Systems and methods are provided for determining and compensating for the laser slope efficiency of a light source positioned in an optical transmitter in order to properly set a modulation current for the light source. In one embodiment, a method for setting a modu... | 12/29/2009 |
| 7567759 | Optical apparatus An optical apparatus comprises a phase comparator detecting a phase shift between a changing point of data transmitted through an electro/opto converter and a changing point of data received through an opto/electro converter, a delay controller and a variable delay ... | 07/28/2009 |
| 7555218 | Optical transceiver having optical receiver with function to cancel noise originated to optical transmitter An optical transceiver is disclosed, in which a noise attributed to the large current switching in the optical transmitter and superposed on the signal line in the optical receiver is effectively eliminated. The optical transceiver includes a noise generator and a d... | 06/30/2009 |
| 7493048 | Transceiver with persistent logging mechanism An optical transceiver configured to transmit and receive optical signals. The optical transceiver includes a control module and a persistent memory. The control module is configured to identify operational information regarding the optical transceiver, and write lo... | 02/17/2009 |
| 7440702 | Method for transmitting digital image signal, digital image transmitting device, digital image sending device and digital image receiver A multiplexer of a transmission section generates a clock signal by multiplying a reference clock signal of a digital image signal by a predetermined number ‘K’. A parallel digital image signal is converted into a serial digital signal on the basis of the clock ... | 10/21/2008 |
| 7437078 | Integrated post-amplifier, laser driver, and controller A telecommunications system and constituent integrated circuit that includes a post-amplifier assembly configured for communication with an optical receiver, a laser driver assembly configured for communication with the optical transmitter, and a controller assembly... | 10/14/2008 |
| 7426348 | Calibrating an optical transceiver via adaptive testing An optical transceiver connectable to a test apparatus. The optical transceiver includes a least one test apparatus interface configured to receive from the test apparatus an input causing at least a first transceiver operating parameter to have a level substantiall... | 09/16/2008 |
| 7424221 | Optical network terminal with illegal transmission detection circuitry An optical network terminal, which includes an optical transmitter, monitors the status of the optical transmitter, such as the output or the power consumption of the optical transmitter, to determine when the optical transmitter is illegally transmitting. When an i... | 09/09/2008 |
| 7421206 | Optical transceiver for transmitting light source control information and optical network using the same An optical transceiver for transmitting light source control information, which is applied to a Subcarrier Multiplexing optical network, is disclosed. The optical transceiver includes a controller, an SCM frame generation/restoring unit, a modulator/demodulator, and... | 09/02/2008 |
| 7406268 | Optical receiver circuit An optical receiver circuit is constructed to be immune to interference from external interference signals. The optical receiver circuit includes a differential amplifier having an optical reception device connected to one input of the differential amplifier. The op... | 07/29/2008 |
| 7406263 | Combined wavefront sensor and data detector for a free space optical communications system with adaptive optics In an adaptive optics module, wavefront sensing and data detection are implemented in a single device. For example, an optical-to-electrical converter converts a data-encoded optical beam to an intermediate electrical signal, which contains both the data encoded in ... | 07/29/2008 |
| 7394995 | System and method for a compact optical receiver with wide dynamic range An optical receiver is disclosed comprising an erbium-doped fiber amplifier (EDFA) that is coupled to a photodiode and transimpedance amplifier without filtering output light signal in the EDFA. Optionally, a clock/data regenerator can be coupled to the electrical o... | 07/01/2008 |
| 7391975 | Method of synchronizing servo timing in an optical wireless link A technique for synchronizing the servo control systems between two optical wireless links (OWLs) that are in communication with one another. This synchronization allows the alignment in time of the various tasks to be assigned in a desired time period. The synchron... | 06/24/2008 |
| 7386238 | Method and system for infrared data communications A method and system for conveying contextually relevant information to a wireless client are disclosed. More particularly, a transmitter transmits a diffuse infrared signal to a client having an IrDA compliant communication interface. The transmitter communicates wi... | 06/10/2008 |
| 7376359 | Digital regulated light receive module and regulation method The invention discloses a digital adjusting method for an optical receiver module, and the method implements real-time monitor of parameters, on-line adjustment and non-linear compensation. The digital optical receiver module includes elements as follow: a voltage o... | 05/20/2008 |
| 7369771 | Optical network terminator and optical network connection method using it An optical network terminator of the present invention includes an optical wavelength division multiplexer for receiving an optical signal and incoherent light. An optical detection unit converts a downstream high speed and low speed optical signals into electrical ... | 05/06/2008 |
| 7359640 | Optical coupling device and method for bidirectional data communication over a common signal line Optical coupling device operates over a bidirectional data link between at least first and second communicators, each communicating data along a common wire of the data link. The device includes at least first and second optical couplers, each including a photon flu... | 04/15/2008 |
| 7359643 | Optical transceiver module with power integrated circuit The optical transceiver module includes a housing and a plurality of components disposed at least partially within the housing. The components include an optical transmitter, an optical receiver, and a power controller integrated circuit (IC). The power controller I... | 04/15/2008 |
| 7359644 | Optoelectronic module with integrated loop-back capability An optoelectronic module includes an optical radiation source having associated an output transmission path for an output optical radiation generated by the source as well as an optical radiation detector having associated an input transmission path for an input opt... | 04/15/2008 |
| 7350986 | Microcode-driven programmable receive power levels in an optical transceiver An operational optical transceiver comprising a receiver, a sensor, a memory, and a processor. The sensor is configured to measure the received power of an optical signal received by the receiver. The received power is sent to the memory where it is read by the proc... | 04/01/2008 |
| 7340133 | Configurable dispersion compensation trimmer The invention pertains to optical fiber transmission systems, and is particularly relevant to transmission of large volumes of data over long distances at high rates. An improved apparatus achieving precise dispersion compensation in a fiber span is disclosed. In pa... | 03/04/2008 |
| 7336904 | Electro-magnetic interference reduction filter for an optical transceiver An optical transmit circuit that includes an electro-optic transducer driver and an electro-magnetic interference (“EMI”) reduction filter. The EMI reduction filter is coupled to an output terminal of the electro-optic transducer driver. This allows the EMI redu... | 02/26/2008 |
| 7332234 | Optoelectronic device capable of participating in in-band traffic An optoelectronic device that has a network address (e.g., IF address) and participates in in-band traffic for purposes of performing functions (e.g., network diagnostics, network control, network provisioning, fault isolation, etc.) that are traditionally performed... | 02/19/2008 |
| 7330663 | PMD-reduction processing for a multi-channel receiver A multi-channel (e.g. WDM) receiver, in which l PMD compensators are time-shared by n (n>1) communication channels, where 1≦l≦n−1. The receiver implements PMD monitoring to identify channels exhibiting relatively high amounts of PMD. Some or all of the identif... | 02/12/2008 |
| 7330661 | Method and apparatus for optical communication between devices A method and apparatus for processing a data signal for transmission to a remote device transmits at least two synchronized copies of the data signal, in optical form, in different directions. To that end, the data signal first is synchronized to a clock signal to p... | 02/12/2008 |
| 7330668 | Low noise light receiver The low noise light receiver comprises a light sensor for generating a sensor signal, the sensor signal comprising a wanted signal resulting from a light source and an interfering signal resulting from interfering light; an optical filter apparatus for reducing the ... | 02/12/2008 |
| 7330438 | Apparatus for transceiving packets in WDM-PON Provided is an apparatus that enables improvement of efficiency of up/downstream packet tensception by reflecting a plurality of variables of packet transmission, such as a temporal variety of packet lengths, asymmetry of downstream and upstream traffics, and an ins... | 02/12/2008 |
