Abstract: A method of controlling radio resources in a cellular wireless network comprising a plurality of fixed antennas providing overlapping radio coverage, the method comprising dynamically adjusting the radiation patterns of the antennas using coordinated distributed control to optimize capacity. The wireless network may be a cellular mobile network or part thereof comprising a plurality of cells, each cell having a base station comprising an antenna, and the method may then further comprise determining the concentration of mobile stations in each cell and changing the radiation/reception pattern of the antennas of some or all of the base stations in response to the concentration of mobile stations in each cell.

Abstract: A method of controlling radio resources in a cellular wireless network comprising a plurality of fixed antennas providing overlapping radio coverage, the method comprising dynamically adjusting the radiation patterns of the antennas using co-ordinated distributed control to optimise capacity. The wireless network may be a cellular mobile network or part thereof comprising a plurality of cells, each cell having a base station comprising an antenna, and the method may then further comprise determining the concentration of mobile stations in each cell and changing the radiation/reception pattern of the antennas of some or all of the base stations in response to the concentration of mobile stations in each cell.

Abstract: A method of testing a high-side driver and a low-side driver in an airbag squib circuit includes preliminary testing of squib resistance and squib leakage for a plurality of trials. Next, one of the drivers is turned on while keeping the other one of the drivers off. A current-limited power supply supplies an intermediate voltage to a squib terminal and the voltage at the terminal is continuously compared with a predetermined voltage range which includes the intermediate voltage. The one driver is turned off in response to the voltage at the point being outside the predetermined voltage range, thereby detecting that the one driver is operating properly. If the voltage at the point remains in the predetermined voltage range for a predetermined time period, then the one driver is turned off and an indication is made that the one driver has failed. If the first driver passed, then the other driver is tested in the same manner.

Abstract: A method of testing a high-side driver and a low-side driver in an airbag squib circuit includes preliminary testing of squib resistance and squib leakage for a plurality of trials. Next, one of the drivers is turned on while keeping the other one of the drivers off. A current-limited power supply supplies an intermediate voltage to a squib terminal and the voltage at the terminal is continuously compared with a predetermined voltage range which includes the intermediate voltage. The one driver is turned off in response to the voltage at the point being outside the predetermined voltage range, thereby detecting that the one driver is operating properly. If the voltage at the point remains in the predetermined voltage range for a predetermined time period, then the one driver is turned off and an indication is made that the one driver has failed. If the first driver passed, then the other driver is tested in the same manner.

Abstract: A video distribution network having an architecture that distributes video services over a greater serving area. The broadcast consolidation section receives broadband data from a plurality of information providers, preferably as compressed, digital signals using asynchronous transfer mode ATM transport. The broadcast consolidation section combines the ATM streams from different information providers and outputs a consolidated signal onto a transport ring. The broadcast ring supplies the consolidated broadcast signal to a plurality of video network hubs, each of which downloads the consolidated broadcast data, converts the consolidated broadcast data to motion picture experts group MPEG data on an RF carrier, and combines the RF signal with other RF signals before transmission by optical fiber to a plurality of local video access nodes.

Abstract: A digital switching network is described which accommodates a full range of broadband and narrowband digital technologies, including video, wideband data, narrowband data, video on demand and telephone channels in an integrated manner. Optical fiber connects information sources to the switching component of the network utilizing a standardized transport stream such as SONET OC-N. A broadband ATM switch, a digital cross-connect switch or other distribution mechanisms may be utilized to interconnect information sources and subscribers. A level 1 gateway is utilized to control access to all information resources on the network.

Abstract: An air conditioner compressor clutch control that senses operator demands for acceleration from low vehicle speeds and several other variables, to release the engagement of the clutch for a period of time that is dependent on vehicle speed, throttle position or a maximum time period.

Abstract: An access subnetwork provides broadcast access transport as well as selective allocation of resources for interactive communications sessions dedicated to individual end users. The access subnetwork has specified broadcast and interactive service interfaces, both for communications to and from an information provider and for communication to and from customer premises equipment. An Access Subnetwork Controller provides a single point of control contact within the access subnetwork. Any other subnetwork (typically an element of a higher level control subnetwork) needing a control function in the access subnetwork always sends the request for that function to the Access Subnetwork Controller. The primary responsibility of the Access Subnetwork Controller is to control resources, provide requested resources and monitor the use of resources within in the realm of the access subnetwork.

Abstract: A video distribution network having an architecture that distributes video services over a greater serving area. The broadcast consolidation section receives broadband data from a plurality of information providers, preferably as compressed, digital signals using asynchronous transfer mode ATM transport. The broadcast consolidation section combines the ATM streams from different information providers and outputs a consolidated signal onto a transport ring. The broadcast ring supplies the consolidated broadcast signal to a plurality of video network hubs, each of which downloads the consolidated broadcast data, converts the consolidated broadcast data to motion picture experts group MPEG data on an RF carrier, and combines the RF signal with other RF signals before transmission by optical fiber to a plurality of local video access nodes.

Abstract: An access subnetwork provides broadcast access transport as well as selective allocation of resources for interactive communications sessions dedicated to individual end users. The access subnetwork has specified broadcast and interactive service interfaces, both for communications to and from an information provider and for communication to and from customer premises equipment. An Access Subnetwork Controller provides a single point of control contact within the access subnetwork. Any other subnetwork (typically an element of a higher level control subnetwork) needing a control function in the access subnetwork always sends the request for that function to the Access Subnetwork Controller. The primary responsibility of the Access Subnetwork Controller is to control resources, provide requested resources and monitor the use of resources within in the realm of the access subnetwork.

Abstract: In advanced digital networks for providing selective point-to-point communications between subscribers terminals and broadband server equipment operated by a plurality of independent information service providers, routing through the network is controlled by functionality identified as a Level 1 Gateway. In an enhanced video dial tone network additionally providing an array of broadcast services from multiple providers, the Level 1 Gateway also provides high level control over at least some of the broadcast services. The Level 1 Gateway will perform a variety of functions including communications port management of transmissions of information between subscribers and servers, processing of billing information and session management. The Level 1 Gateway generates menus of providers and broadcast services, either as a function of providers and services available through a particular portion of the network or in a customized fashion specified by individual subscribers.

Abstract: A digital switching network is described which accommodates a full range of broadband and narrowband digital technologies, including video, wideband data, narrowband data, video-on-demand and telephone channels in an integrated manner. Optical fiber connects information sources to the switching component of the network utilizing a standardized transport stream such as SONET OC-N. A broadband ATM switch, a digital cross-connect switch or other distribution mechanisms may be utilized to interconnect information sources and subscribers. A level 1 gateway is utilized to control access to all information resources on the network.

Abstract: In advanced digital networks for providing selective point-to-point communications between subscriber's terminals and broadband server's equipment operated by a plurality of independent information service providers, routing through the network is controlled by functionality identified as a Level 1 Gateway. In an enhanced video dial tone network additionally providing an array of broadcast services from multiple providers, the Level 1 Gateway also provides high level control over at least some of the broadcast services. The Level 1 Gateway will perform a variety of functions including communications port management of transmissions of information between subscribers and servers, processing of billing information and session management. The Level 1 Gateway generates menus of providers and broadcast services, either as a function of providers and services available through a particular portion of the network or in a customized fashion specified by individual subscribers.

Abstract: A video distribution network having an architecture that distributes video services over a greater serving area. The broadcast consolidation section receives broadband data from a plurality of information providers, preferably as compressed, digital signals using asynchronous transfer mode (ATM) transport. The broadcast consolidation section combines the ATM streams from different information providers and outputs a consolidated signal onto a transport ring. The broadcast ring supplies the consolidated broadcast edit to a plurality of video network hubs, each of which downloads the consolidated broadcast data, converts the consolidated broadcast data to MPEG data on an RF carrier, and combines the RF signal with other RF signals before transmission by optical fiber to a plurality of local video access node. Each local video access node combines the RF broadcast data from the corresponding video access node with downstream IMTV traffic supplied by an ATM backbone subnetwork.