| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 398189000 | Pulse modulation | 11 |
| 20080285983 | MODULATION SCHEME FOR TEDONS - A system and method for increasing transmission distance and/or transmission data rates using tedons and an encoding scheme to reduce the number of ones in a data signal is described. For example, the method for increasing transmission distance and transmission data rate of a fiber optical communications link using tedons includes the steps of encoding a data signal to be transmitted using an encoding scheme that reduces a number of ones in the data signal, transmitting the encoded data signal over the fiber optical communications link, receiving the encoded data signal and decoding the encoded data signal. | 11-20-2008 |
| 20090304395 | Tunable Electrical Return-to-Zero Modulation Method and Apparatus - A tunable duty cycle electrical return-to-zero (RZ) modulation method is realized through tuning of some electrical parameters of an encoder without the need for expensive and/or bulky optical pulse carver, therefore providing a universal RZ apparatus suitable for various high speed applications such as at 10 Gb/s, 40 Gb/s and 100 Gb/s. The electrical RZ modulation scheme is readily combined with other known modulation technologies on the transmitter side to support low cost RZ modulation for metro, long haul and submarine systems. | 12-10-2009 |
| 20110052210 | METHOD AND DEVICE FOR THE OPTICAL TRANSMISSION OF DATA - In a device and method for the optical transmission of data using a pulse-width-modulated LED ( | 03-03-2011 |
| 20110170878 | APPARATUS AND METHOD FOR GENERATING OPTICAL PULSES - An apparatus and method for generating a train of optical pulses. The apparatus comprises an optical resonant cavity ( | 07-14-2011 |
| 20140079410 | LASER DRIVER PEAKING SYSTEM AND METHOD FOR OPTICAL COMMUNICATION SYSTEMS - In an optical data communication system transmitter, in which a laser is driven with a laser modulation signal in response to a serial data stream, the laser driver adds peaking to a bit other than the first bit following a bit transition. | 03-20-2014 |
| 20150063828 | Generalized Transmit Pre-Coding for Optical and Backplane Channels - Systems that allow for DFE functionality to be eliminated from the receiver side of a communication system and for a DFE-like functionality to be implemented instead at the transmitter side of the communication system are provided. By removing the DFE functionality from the receiver side, error propagation can be eliminated at the receiver and receiver complexity can be reduced drastically. At the transmitter side, the DFE-like functionality provides the same DFE benefits, and with the transmitter environment being noise-free, no errors can occur due noise boosting, for example. The DFE-like functionality at the transmitter side can be implemented using non-linear (recursive or feed-forward) pre-coders or a combination of non-linear pre-coders and linear filters, which can be configured to invert a net communication channel between the transmitter and the receiver. Embodiments particularly suitable for fiber optic channels and server backplane channels are also provided. | 03-05-2015 |
| 20150358084 | OPTICAL COMMUNICATION CIRCUITS - Various apparatuses, circuits, systems, and methods for optical communication are disclosed. In some implementations, an apparatus includes a package substrate and f first interposer mounted on the package substrate. The apparatus also includes a logic circuit and an optical interface circuit connected to the logic circuit via the first interposer. One of the optical interface circuit or the logic circuit is mounted on the first interposer. The optical interface circuit includes a driver circuit configured to receive electronic data signals from the logic circuit. The optical interface circuit also includes an optical transmitter circuit coupled to the driver circuit and configured to output optical data signals encoding the electronic data signals. | 12-10-2015 |
| 398190000 | Pulse-code | 2 |
| 20090162077 | Precision timing pulse width communications systems and methods - Systems and methods are described for pulse communications using precision timing. A method includes digitally pulse coding a data stream; and modulating a carrier signal using the digitally pulse coded data stream. | 06-25-2009 |
| 20150093122 | ENCODING AND DECODING METHODS FOR HIGH-PRECISION TIME TRANSFER AND ENCODING AND DECODING DEVICES THEREFOR - A format for modified IRIB-G time code, with added message fields while preserving pulse width coding rule of the standard IRIG-B time code, having a time interval field for carrying time interval between the local time signal and a received time signal, and a user-defined or padded field for carrying user-defined time and/or control messages. An encoding and a decoding methods and devices for high-precision time transfer, where the modified IRIG-B time code carries more messages, and enabling transmission of timing messages and testing messages of two-way time comparison via a single message channel at the same time, which reduces fluctuation due to encoding and decoding manipulation and correlation with working frequencies via exact synchronization between the on-times of the output encoded time code and the transmitted time signal, and between the on-times of the output decoded time signal and the input time code, and improves precision of time transfer. | 04-02-2015 |
| 398191000 | Pulse time | 2 |
| 20090214225 | Data Transmission Apparatus and Data Reception Apparatus - A data communication system capable of controlling the brightness of light sensed by the human eye and quality communication using an illuminative light is provided. A PWM circuit | 08-27-2009 |
| 20120045221 | METHOD AND DEVICE FOR OPTICALLY TRANSMITTING DATA - In a method for optically transmitting data by means of a pulse-width-modulated light source (LED), a pulse duty factor (N) of a pulse width modulation is specified to set the brightness of the light source (LED). A bright time (T) is divided into at least a first and second partial bright time using at least one blanking so that the data (DATA) to be transmitted are encoded by the start and time length of the at least one blanking. The sum of the partial bright times within the pulse width modulation cycle substantially corresponds to the bright time according to the specified pulse duty factor. | 02-23-2012 |
