Mark J Laubach

6563829, May 13, 2003

Mar 25, 1999

09/276434

Joseph Bryan Lyles - Mountain View CA
Mark E. Laubach - Mountain View CA
Scott M. Quinn - San Francisco CA

Xerox Corporation - Stamford CT
COM21, Inc. - Mountain View CA
Telesis Technologies Laboratory - San Ramon CA

H04J 324

37039521, 370230, 3703954, 370412, 370447, 370468

A method in accordance with the invention allocates bandwidth, fairly and dynamically, in a shared-media packet switched network to accommodate both elastic and inelastic applications. The method, executed by or in a head-end controller, allocates bandwidth transmission slots, converting requests for bandwidth into virtual scheduling times for granting access to the shared media. The method can use a weighted fair queuing algorithm or a virtual clock algorithm to generate a sequence of upstream slot/transmission assignment grants. The method supports multiple quality of service (QoS) classes via mechanisms which give highest priority to the service class with the most stringent QoS requirements.

6917614, Jul 12, 2005

Sep 17, 1999

09/398267

Mark E. Laubach - Mountain View CA, US
Sanford L. Helton - San Jose CA, US
Alireza Raissinia - Monte Sereno CA, US
Paul A. Gordon - Santa Clara CA, US
Malay M. Thaker - Campbell CA, US
Kathleen M. Nichols - Woodside CA, US

Arris International, Inc. - Suwanee GA

H04L012/28

370392, 370486

A two-way cable network offering high-speed broadband communications delivered via virtual private networks over a multi-channel shared media system. Bi-directional transmission of packet to ATM cell based communications is established between a head end communication controller and a number of subscriber terminal units, whereby individual cells are prioritized and routed according to a virtual connection. Virtual connections are organized to support multiple virtual private networks in a shared media CATV system. The virtual private network to which a particular STU belongs is user selectable and has the flexibility of handling multi up/downstream channels with different MAC domains. The present invention can also handle non-ATM MAC domains via the same common ATM switch. To overcome the limited number of addresses inherent to common ATM switches, a mapping/remapping function is implemented in the port cards. Furthermore, downstream as well as upstream traffic are filtered at each STU.

20100027769, Feb 4, 2010

Aug 2, 2007

11/833177

Jeffrey Stevens - Cupertino CA, US
Mark E. Laubach - Cupertino CA, US
Curtis Stevens - Santa Clara CA, US
Anthony J. Rockmore - Menlo Park CA, US
Brian McCune - Menlo Park CA, US

H04M 1/64
G06F 21/00
H04M 11/00

379 8817, 726 26, 379 9301

A proactive repository stores authenticated information regarding Entities and their properties. A set of conditions and policies is associated with the information in the repository. These conditions govern the release of information to an authorized recipient. Release conditions include various forms of activation, such as activation of emergency services dispatch, a change in condition of a public utility, a change in geophysical or meteorological conditions, etc. At least one responsible third party can authenticate Entities, agents agencies and the like, validate associated credentials, and store received information in the repository. A first proactive repository can be stored within a second proactive repository. A proactive repository can provide the facilities of a multi-modal notification delivery system.

20140056586, Feb 27, 2014

Aug 23, 2013

13/974823

Mark E. LAUBACH - Redwood City CA, US

H04B 10/27

398 76

Embodiments provide systems and methods for enabling the support of multiple Ethernet Passive Optical Network over Coax (EPoC) channels, which can be bonded together into a single high-speed channel. The multiple EPoC channels can be configured according to available spectrum, such that they occupy one or more, frequency contiguous or separated, segments of the available spectrum. The size (number of sub-carriers) of each of the channels can be configured according to embodiments based on the available spectrum and/or other requirements (e.g., EPoC emission requirements, existing services, etc.). Further, within each channel, individual sub-carriers can be configured independently, including turning each sub-carrier on/off and/or specifying the symbol bit loading for the sub-carrier independently of other sub-carriers in the channel.

60288604, Feb 22, 2000

Oct 23, 1996

8/731958

Mark E. Laubach - Mountain View CA
Sanford L. Helton - San Jose CA
Alireza Raissinia - Monte Serino CA
Paul A. Gordon - Santa Clara CA
Michael J. Sabin - Sunnyvale CA
Malay M. Thaker - Campbell CA
Kathleen M. Nichols - Woodside CA

COM21, Inc. - Milpitas CA

H04L 1228
H04L 1243
H04N 710
H04H 100

370395

Bi-directional communications system in a CATV network utilizing cell-based Asynchronous Transfer Mode (ATM) transmissions. Packet data existing in any one of several different formats are first converted into ATM cells by a headend controller. Individual cells are then assigned a virtual connection by the headend controller. Based on the virtual connection, the cells can be prioritized and routed to their intended destinations. The cells are transmitted in a shared radio frequency spectrum over a standard cable TV network. A subscriber terminal unit demodulates the received RF signal and processes the cells for use in a computer. Likewise, computers may transmit packet data to their respective subscriber terminal units which are sent to the headend controller over the same CATV network. Hence, the present invention offers a flexible, effective, economic, and fully integrated multimedia bearer system granting immediate support for Internet services, traditional voice telephony, and digital video services over a CATV network.

59178221, Jun 29, 1999

Apr 12, 1996

8/631507

Joseph Bryan Lyles - Mountain View CA
Mark E. Laubach - Mountain View CA
Scott M. Quinn - San Francisco CA

Xerox Corporation - Stamford CT
COM21, Inc. - Mountain View CA
Telesis Technologies Laboratory - San Ramon CA

H04J 324

370395

A method in accordance with the invention allocates bandwidth, fairly and dynamically, in a shared-media packet switched network to accommodate both elastic and inelastic applications. The method, executed by or in a head-end controller, allocates bandwidth transmission slots, converting requests for bandwidth into virtual scheduling times for granting access to the shared media. The method can use a weighted fair queuing algorithm or a virtual clock algorithm to generate a sequence of upstream slot/transmission assignment grants. The method supports multiple quality of service (QoS) classes via mechanisms which give highest priority to the service class with the most stringent QoS requirements.

58701346, Feb 9, 1999

Mar 4, 1997

8/810407

Mark Laubach - Mountain View CA
Paul Baran - Atherton CA

Com21, Inc. - Milpitas CA

H04N 7173

348 12

A two-way CATV network having a radio return path. A cable headend controller is used to control downstream as well as upstream communications over the two-way CATV network. Downstream signals are sent to subscribers' cable modems through conventional coaxial cables. On the upstream side, a signal generated at a first frequency by an interactive cable modem. This signal is then sent to a transmitter applique, which converts the signal to a second frequency. The signal is then transmitted through a wireless segment at this second frequency to a receiver applique. The receiver applique converts the transmitted signal into a third frequency. In some cases, the first frequency is the same as the third frequency. Eventually, the upstream signal is sent to the headend controller. Throughout the entire upstream transmission process, the same signal is maintained; only its frequency is changed.

61377937, Oct 24, 2000

Dec 5, 1997

8/985571

Kenneth Gorman - Danville CA
Mark E. Laubach - Mountain View CA
Ali Raissinia - Monte Sereno CA

COM21, Inc. - Milpitas CA

H04L 1250
H04Q 1100
H04J 302

370360

A two-way hybrid fiber-coax cable networks offering high-speed broadband communications delivered via a cable modem service. Bi-directional transmissions of packets between the head-end controller (Cable Modem Terminal System) and cable modems (subscriber terminal units) is accomplished using a cable television Media Access Control (MAC) protocol. In Hybrid Fiber-Coax (HFC) networks, the invention provides a Reverse Path Multiplexing (RPM) function permitting the coupling of a large number of return path (plant) RF ports (return ports) to be coupled to a receiver card in the CMTS. One aspect of this invention is that one or more upstream traffic schedulers reside within the CMTS equipment with the responsibility of scheduling the upstream transmissions from cable modems. The cable modems are distributed across many return ports. The data from each cable modem must be successfully received by the head-end controller without being compromised by the effects of noise funneling.