Apple Inc.

Passif Semiconductor Corp.

Benjamin W Cook

Axel Dominique Berny

Jason A Trachewsky

Clarke S Watson

Kurt R Stiehl

Jonathan Sarjeant Aase

Jahan C Minoo

Robert D Watson

Jerzy S Guterman

Esge Brandt Andersen

Arun Dhyaneshwar Chawan

Yacine Azmi

Augustin Prats

David John Shaw

Michael B Howes

Baptiste Pierre Paquier

Zachary C Rich

Aarti Kumar

Benjamin Adair Cousins

Benjamin A Cousins

Utku Seckin

Simone Gambini

A wireless speaker audio system configured to receive audio information wirelessly transmitted by an audio source including first and second wireless transceivers. The first wireless transceiver establishes a bidirectional secondary wireless link with the audio source for receiving and acknowledging receipt of the audio information. The first and second wireless transceivers communicate with each other via a primary wireless link. A wireless audio system including an audio source and first and second wireless transceivers. The first and second wireless transceivers communicate via a primary wireless link. The audio source communicates audio information to the first wireless transceiver via a secondary wireless link which is configured according to a standard wireless protocol. The first wireless transceiver is configured to acknowledge successful reception of audio information via the secondary wireless link. Other embodiments are also described and claimed.

Un-tethered wireless audio system

A housing has a bud portion abutting an elongated stem portion. The bud portion is to fit within an ear. The bud portion has a primary sound outlet at its far end that is to be inserted into an outer ear canal, and abuts the stem portion at its near end. A speaker driver is inside the bud portion. Electronic circuitry inside the housing includes a wireless communications interface to receive audio content over-the-air and in response provides an audio signal to the speaker driver. A rechargeable battery as a power source for the electronic circuitry is located inside a cavity of the stem portion. Other embodiments are also described and claimed.

Wireless earphone

A non-integer divider for dividing the frequency of a signal is disclosed. A non-integer divider includes a first divider that divides the frequency of a first signal. A mixer is coupled to receive the first signal, and a second signal having a frequency equivalent to that output by the first divider. The mixer outputs a third signal having a frequency based on respective frequencies of the first and second signal. A second divider receives and frequency divides the third signal to produce a fourth signal. A ratio of the frequency of the first signal to the fourth signal is a non-integer value.

Non-integer frequency divider

The wireless earphone () comprises a housing () having a bud portion abutting an elongated stem portion. The bud portion is to fit within an ear. The bud portion has a primary sound outlet () at its far end that is to be inserted into an outer ear canal, and abuts the stem portion at its near end. A speaker driver () is inside the bud portion. Electronic circuitry () inside the housing () includes a wireless communications interface () to receive audio content over-the-air and in response provides an audio signal to the speaker driver. A rechargeable battery () as a power source for the electronic circuitry is located inside a cavity of the stem portion.

A wireless speaker audio system configured to receive audio information wirelessly transmitted by an audio source including first and second wireless transceivers. The first wireless transceiver establishes a bidirectional secondary wireless link with the audio source for receiving and acknowledging receipt of the audio information. The first and second wireless transceivers communicate with each other via a primary wireless link. A wireless audio system including an audio source and first and second wireless transceivers. The first and second wireless transceivers communicate via a primary wireless link. The audio source communicates audio information to the first wireless transceiver via a secondary wireless link which is configured according to a standard wireless protocol. The first wireless transceiver is configured to acknowledge successful reception of audio information via the secondary wireless link.

A discrete-time analog filter including multiple storage cells each coupled to common input and output ports and each including at least one of capacitor and at least one switch. Each cell periodically samples an input signal and contributes to an output signal. At least two cells sample the input signal at different frequencies. The cells may be grouped together into one or more filter taps, where each filter tap may have a specified timing delay. Timing signals of a given tap may be non-overlapping phases of a given frequency. Cells may have a fixed or programmable capacitance associated with a corresponding weighting coefficient, and different taps may have different weighting coefficients. Taps may be coupled to implement a negative weighting coefficient. Programmable gain may be implemented with switches or by tap output coupling including sub-filter summing arrangements. Self-timed cells based on a master clock are disclosed.

Passive discrete time analog filter

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San Francisco, CA, United States of America

Benjamin W Cook