Abstract: A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set and a quadrature-phase channel set. The in-phase channel set is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel is generated using a set of long channel codes.

Abstract: A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set and a quadrature-phase channel set. The in-phase channel set is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.

Abstract: Software for use on a client device, which is configured for communications with a multiplicity of other client devices via a communications network, provides an installer function for installing the software on the client device, a communications function that effects a send e-mail communication link between the client device and an e-mail service provider server system via the communications network whenever the user desires to send e-mail messages a receive e-mail communication link between the client device and the e-mail service provider system whenever the user desires to check for received e-mail messages; and an advertisement download communication link between the client device and an advertisement distribution server system via the communications system, at selected advertisement download times.

Abstract: A base station architecture splits modem functionality into modulator and demodulator entities, each configured to handle multiple telephone calls. A high-speed digital bus with associated routing elements connects multiple-channel (i.e., multiuser) modulator and demodulator elements. The modulator and demodulator elements may be physically separated, residing on different cards, and even different shelves, within the base station. During softer handoff between forward channels of the base station, multiple modulator elements use the address of a demodulator element in communication with a mobile subscriber unit. A base station controller broadcasts forward-link frames to all modulator elements. The multiple modulator elements simultaneously receive forward-link frames from the base station controller. The multiple modulator elements filter these forward-link frames and accept only those to be transmitted to the particular mobile subscriber unit in communication with the demodulator element.

Abstract: A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set and a quadrature-phase channel set. The in-phase channel set is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.

Abstract: In some aspects, each cell in the communications system can be designed to operate in accordance with a set of back-off factors that identify the reductions in peak transmit power levels for the channels associated with the back-off factors. The back-off factors are defined to provide the required power to a large percentage of the users while reducing the amount of interference. In some other aspects, the cells operate using an adaptive reuse scheme that allows the cells to efficiently allocate and reallocate the system resources to reflect changes in the system. A reuse scheme is initially defined and resources are allocated to the cells. During operation, changes in the operating conditions of the system are detected and the reuse scheme is redefined as necessary based on the detected changes. For example, the loading conditions of the cells can be detected, and the resources can be reallocated and/or the reuse scheme can be redefined.

Abstract: A predistortion technique for high power amplifiers includes an adaptive predistortion algorithm that operates independently of data samples to write a set of complex gain values, or predistortion parameters, to a lookup table. The algorithm may be processor-driven. The gain values are taken from the lookup table and multiplied by a complex digital baseband waveform. The gain values may first be subjected to interpolation. The downconverted output of the amplifier is measured to gauge the efficacy of the predistortion. Based on the effect of the predistortion upon the ratio of in-band power to out-of-band power, decisions are made on the set of predistortion parameters for the next iteration of the algorithm. The algorithm runs continuously, perturbing parameters and adapting the predistortion functions accordingly in an effort to continually reflect instantaneous amplitude-modulation and phase-modulation relationships that may change over time with temperature variation or component aging.

Abstract: A method and apparatus for transmitting voice and data in a code division multiple access (CDMA) wireless telecommunications system is described. In an exemplary embodiment of the invention, a base station transmits voice information at a voice transmit power and data at a data transmit power that is equal to a maximum transmit power minus the voice transmit power. In a preferred embodiment of the invention, each base station reports the voice transmit power to a base station controller in 20 ms intervals. The base station controller responds by calculating an available data transmit capacity, and by forwarding data to each base station equal to the available data transmit capacity. Each base station then transmits all voice data at the current voice transmit power, and data at the current data transmission power. If the amount of data received exceeds the capacity provided by the current data transmission power, some data is not transmitted.

Abstract: A method and apparatus for a variable mode multi-media data object storage device. Large digital objects can be quickly downloaded in approximately a minute. The digital objects can be utilized or played back at real-time speeds. Utilization or playback consumes minimal power, allowing the disk to support portable devices operating on battery power. The storage device uses multiple disk rotation speeds to support multiple modes of operation. The storage device operates in at least two modes of disk drive operation, supporting a fast platter rotation speed for writing and a slower platter rotation speed for reading. The multiple rotation speeds operate in conjunction with a head assembly configured with at least one head for reading and multiple heads for writing. When writing, the disk spins at the faster rotation speed. When in utilization or playback mode, the disk spins at the slower, power conserving rotation speed.

Abstract: A playlist server system for supplying a playlist response to a client device which exchanges information with an information server system and which receives ads from an ad server over a communications network, including a playlist response generating device for generating a playlist response identifying a plurality of selected ads to be presented by the client device, and a first communications device for establishing a playlist response send communications link with the client device via the communications network over which the playlist response is transmitted to the client device, wherein the information server system and the playlist server are independently controlled.

Abstract: A base station architecture splits modem functionality into modulator and demodulator entities, each configured to handle multiple telephone calls. A high-speed digital bus with associated routing elements connects multiple-channel (i.e., multiuser) modulator and demodulator elements. The modulator and demodulator elements may be physically separated, residing on different cards, and even different shelves, within the base station. Reverse-link power-control information is routed from a demodulator element in communication with a particular subscriber unit to one or more modulator elements in communication with the subscriber unit.

Abstract: An advertisement distribution system for distributing advertisements to a multiplicity of client devices via a communications network includes at least one ad server that stores the advertisements to be distributed to the client devices, each advertisement being stored in a storage location designated by a source address, and at least one playlist server that receives a playlist request from each of the client devices, and that transmits a playlist response in response to each received playlist request. Moreover, the playlist response transmitted to each client device includes at least one playlist that identifies advertisements to be downloaded by that client device.

Abstract: A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set and a quadrature-phase channel set. The in-phase channel set is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.

Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.

Abstract: A system for distributing advertisements to a multiplicity of client devices each of which is configured for communications via a communications network preferably includes an advertisement distribution facility that communicates with each of the client devices over the communications network. Most preferably, each of the client devices downloads advertisements from the advertisement distribution facility, and displays at least selected ones of the downloaded advertisements. The advertisement distribution facility includes an auditing function that transmits a send audit data request to a subset of the client devices at prescribed client audit intervals, which send audit data request includes a request that the receiving client device transmit ad-related statistical data to the advertisement distribution facility.

Abstract: In one aspect, the present invention provides an advertisement distribution system for distributing advertisements to a multiplicity of client devices via a communications network, which system includes at least one ad server that stores the advertisements to be distributed to the client devices, each advertisement being stored in a storage location designated by a source address, and at least one playlist server that provides at least one playlist for each client device. Preferably, the at least one playlist provided for each client device identifies advertisements to be downloaded by that client device.

Abstract: A method for operating a client device that is configured for communications via a communications network includes steps for effecting an advertisement download communication link between the client device and an advertisement distribution server system, via the communications network, at selected advertisement download times, effecting a data communication link with a data communications service provider, via the communications network, wherein the advertisement download communication link and the data communication link are separate communication links, downloading advertisements from the advertisement distribution server system via the advertisement download communication link, storing downloaded advertisements on a storage medium associated with the client device, and displaying at least selected ones of the stored advertisements, in accordance with ad display parameters prescribed by the advertisement distribution server system.

Abstract: A method and apparatus for transmitting voice and data in a code division multiple access (CDMA) wireless telecommunications systems is described. In an exemplary embodiment of the invention, a base station transmits voice information at voice transmit power and data at a data transmit power that is equal to a maximum transmit power minus the voice transmit power. In a preferred embodiment of the invention, each base station reports the voice transmit power to a base station controller in 20 ms intervals. The base station controller responds by calculating an available data transmit capacity, and by forwarding data to each base station equal to the available data transmit capacity. Each base station then transmits all voice data at the current voice transmit power, and data at the current data transmission power. If the amount of data received exceeds the capacity provided by the current data transmission power, some data is not transmitted.

Abstract: A playlist server system for supplying a playlist response to a client device which exchanges information with an information server system and which receives ads from an ad server over a communications network, includes a playlist response generation device for generating a playlist response identifying a plurality of selected ads to be presented by the client device, and a first communications device that effects a playlist response send communications link with the client device via the communications network over which the playlist response is transmitted to the client device, wherein the information server system and the playlist server are independently controlled.

Abstract: A client device that is configured for communications with a multiplicity of other client devices via a communications network, includes a first device for effecting an advertisement download communication link between the client device and an advertisement distribution server system, via the communications network, at selected advertisement download times, a second device for effecting a data communication link with a data communications service provider, via the communications network, wherein the advertisement download communication link and the data communication link are separate communication links, a third device for downloading advertisements from the advertisement distribution server system via the advertisement download communication link, a fourth device for storing downloaded advertisements on a storage medium associated with the client device, and a fifth device for displaying at least selected ones of the stored advertisements, in accordance with ad display parameters prescribed by the advertise