| Patent Number |
Title Of Patent |
Date Issued |
| 7342884 |
Method and apparatus for one directional communications in bidirectional communications channel |
March 11, 2008 |
| Optical transceivers used in data communications equipment are typically bidirectional and require two-way communications in order to maintain their operability. However, in some applications such as cable television, the traffic is highly unbalanced with very high bandwidth requirem |
| 7242871 |
High dynamic range optical receiver |
July 10, 2007 |
| An optical receiver, for use for instance in an analog optical communications system such as a return path in cable television, operates over a wide range of input power to its photodetector. This is accomplished by providing in the optical receiver a series of RF amplifier stages wh |
| 6674796 |
Statistical multiplexed video encoding for diverse video formats |
January 6, 2004 |
| A statistical multiplexing apparatus and method for encoding and combining a diversity of video signal resolutions and formats. Higher resolution signals are reduced to lower resolution signals for simplifying the a priori statistics gathering process. Alternately, input video signals in |
| 6490727 |
Distributed termination system for two-way hybrid networks |
December 3, 2002 |
| In hybrid fiber coaxial cable networks such as used in cable television where two-way digital communications are desired, a distributed termination system is provided. In such a system the home terminals are digital terminals, such as digital set-top boxes or cable modems using bi-di |
| 6490298 |
Apparatus and methods of multiplexing data to a communication channel |
December 3, 2002 |
| Apparatus and methods for multiplexing data received from a plurality of sources to a communication channel. Each of the sources is assigned to one of at least two scheduling layers based in part upon one or more bit rate characteristics of the sources. |
| 6463102 |
Digital video compressor with border processor |
October 8, 2002 |
| In one embodiment, an edge or border processor modifies the undisplayed edges of an uncompressed video input signal before it is applied to a compression engine. This configuration reduces the number of bits used in the compression process. The undisplayed edges of the video signal are |
| 6310915 |
Video transcoder with bitstream look ahead for rate control and statistical multiplexing |
October 30, 2001 |
| A method is provided for transcoding, i.e., decoding, and re-encoding, a previously encoded video signal, to a second encoded representation. A number k>1 of previously encoded pictures of the previously encoded video signal are received in a buffer. Each of the k previously encoded |
| 6304369 |
Method and apparatus for eliminating noise in analog fiber links |
October 16, 2001 |
| An optical transmission system that includes an optical amplifier coupled to the input of an optical modulator having at least two complementary output ports for providing complementary modulated optical output signals can be used such that the relative intensity noise (RIN) associated w |
| 6285252 |
Apparatus and method for broadband feedforward predistortion |
September 4, 2001 |
| An amplifying circuit and associated method that outputs a distortion-free signal. The circuit includes an output amplifier driven by two intermediate amplifiers having differing gain factors. The intermediate amplifiers are coupled via an attenuator, a phase shifter, a signal splitt |
| 6169843 |
Recording and playback of audio-video transport streams |
January 2, 2001 |
| A method and apparatus for recording and playback of transport stream packets including multiplexed audio, video and other data streams. The transport streams may be generated in accordance with an MPEG-2 standard. In a record mode, an arrival timestamp is generated for each input tr |
| 6122302 |
Automatic compensation of CNR and OMI in a laser transmitter |
September 19, 2000 |
| A laser transmitter used in an optical communication system provides automatic compensation/stabilization of CNR (carrier to noise ratio) and OMI (optical modulation index) in conditions that would have caused these parameters to change if the compensation circuitry was not employed. The |
| 6121857 |
AC power passing RF choke with a 15 gauge wire |
September 19, 2000 |
| An RF choke for separating or joining an RF signal and an AC power signal on e.g. a CATV transmission line has a large current carrying capacity. The RF choke uses 14 to 16 gauge magnetic wire in order to carry currents as high as 15 amps. In addition, the RF choke has excellent performa |
