Conexant Systems, Inc.

Vlsi Technology, Inc.

Conrad A Maxwell

David P Braun

George Christopher Sneed

Tom Lau

A communications system includes a communications device, an enhanced integrated packet bus, and an integrated packet bus controller. The communications system may be a riser card, including communications devices such as DSL, HomePNA and LAN devices. The bus supports additional data signals designated for carrying additional data, wherein a portion of such data may be differentially encoded. The bus is capable of supporting two or more communications devices. The bus supports a communications protocol, which includes a control slot and data slots. Each bit of the control slot selects which of the data slot bits belongs to which of the communications devices. For example, with two communications devices, a 16-bit control slot can be filled with the bit pattern '0000111111111111' which indicates that the first 4 bits of the 16-bit data slot belong to the first communications device and the second 12 bits belong to the second communications device.

Integrated packet bus with enhanced bandwidth

A communications system includes at least two communications devices, a bus, and a controller for the bus. The communications system may be a riser card, including communications devices such as a DSL device, for example, and a HomePNA device, and the bus can be an integrated packet bus, using an integrated packet bus controller for controlling communications from the computer with the communications devices. The bus supports a communications protocol, which includes a control slot and data slots. Each bit of the control slot selects which of the data slot bits belongs to which of the communications devices. For example, with two communications devices, a 16-bit control slot can be filled with the bit pattern &ldquo;0000111111111111&rdquo; which indicates that the first 4 bits of the 16-bit data slot belong to the first communications device and the second 12 bits belong to the second communications device.

Integrated packet bus for multiple devices

A system and method for providing soft modem and soft audio copy protection for hardware interfaces and software code utilized in an AC '97 architecture to prevent against unauthorized copying. The system confirms that a codec connected to the AC '97 architecture is provided by a desired supplier. The system performs a sample rate negotiation to determine an operating sample rate for data transfer. When the system provides a desired sample rate which does not correspond to a sample rate appearing in a predefined set of sample rates supported by an AC '97 architecture, the system expects the codec to echo back a predesignated sample rate during the sample rate negotiation indicating that a desired sample rate has been received which does not correspond to one of the supported sample rates. When the system determines that the predesignated sample rate has been echoed back, the copy protection system recognizes the codec as being provided by an authorized supplier and authorizes the codec for operation. However, the system disables the attached codec when it determines that the predesignated sample rate has not been echoed back from the codec in response to reading an unsupported sample rate from the control register. This provides the security feature of ensuring that the attached codec is provided by an authorized supplier.

System and method for providing soft audio and soft modem copy protection for hardware interfaces and software code

A system and method for performing a digital subscriber line (DSL) transmission over an AC-link bus directly connecting a modem codec to a codec controller. The codec and codec controller connected to the AC-link bus are configured for a particular industry-defined AC-link bus protocol defining a data packet having multiple time-division multiplexed (TDM) data slots, where the present invention redefines the protocol of the AC-link bus in order to allow a high bandwidth DSL transmission to be performed using the data packets transmitted over the AC-link bus. The present invention redefines the AC-link bus protocol to provide at least one additional TDM data slot in the data packet for handling DSL modem transmission data streams. The reconfigured data packet provides additional bandwidth capabilities which allow high-bandwidth DSL modem transmissions to be sent in the data packets transmitted over the AC-link bus, which where not previously achievable using the industry-defined AC-link protocol.

System and method for performing digital subscriber line (DSL) modem communication over an AC link bus

A system and method for performing signal acceleration on data packets communicated across an AC-link bus directly interconnecting a codec to a codec controller. The system positions an accelerator directly in the communication path between the codec and its respective codec controller, so that the accelerator is arranged to receive signals traveling through the AC-link bus. This arrangement allows data manipulation to be performed by the accelerator on the data packets communicated across the AC-link bus, where the processed data packets are output by the accelerator back onto the AC-link bus. The accelerator is arranged to have real-time access to the input and output data streams traveling through the AC-link bus, so that data manipulation can be performed without multiple communications to the codec controller or host computer CPU.

System and method for performing signal acceleration on an AC link bus

A method and apparatus for locating the user of a computer system and adjusting the sound from the system speakers. The computer system includes a computer, two speakers, a microphone, a signal processor, and an audio processor. The speakers emit a sound which is reflected from the user and other objects in the vicinity of the system. The invention includes an algorithm for determining which of the reflected sounds had been reflected from the user of the computer system. The character of the sound emitted by the computer system is then adjusted to enhance the sound effects at the location of the user.

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Irvine, CA, United States of America

Conrad A Maxwell