公开(公告)号：US20230362046A1

公开(公告)日：2023-11-09

申请号：US18214657

申请日：2023-06-27

Applicant: Sirius XM Radio Inc.

Inventor： Edward Schell ,  Carl Scarpa

IPC: H04L27/26 ,  H04L25/02 ,  H04L25/06

CPC classification number: H04L27/2646 ,  H04L25/0204 ,  H04L25/061 ,  H04L27/265 ,  H04L27/2695

Abstract: Systems and methods for enabling pre-compensation of timing offsets in OFDM receivers without invalidating channel estimates are described. Timing offset estimations may be sent along with the received OFDM symbols for FFT computation and generating a de-rotated signal output. The timing offset estimation may provide a reference point for dynamic tracking of timing for an OFDM signal and estimated based on an integral value associated with the OFDM signal.

公开(公告)号：US11758093B2

公开(公告)日：2023-09-12

申请号：US17165283

申请日：2021-02-02

Applicant: Sirius XM Radio Inc.

Inventor： William Carl Stumphauzer, II ,  Todd Darrell Van Zandt

IPC: H04N7/18 ,  G08G1/137 ,  G01C21/36 ,  G08G1/0967 ,  G06V20/54 ,  G01S19/14 ,  G08G1/09

CPC classification number: H04N7/183 ,  G01C21/3682 ,  G01S19/14 ,  G06V20/54 ,  G08G1/09675 ,  G08G1/096716 ,  G08G1/096775 ,  G08G1/137 ,  G08G1/091

Abstract: An enhanced broadcast data service with reports locations of traffic enforcement camera locations (e.g., red light cameras and speed cameras) to users. Traffic enforcement camera information is aggregated, verified (e.g., particularly as to traffic enforcement camera type) and stored (e.g., at a server). A broadcast signal comprising program channels and at least one data channel having traffic enforcement camera information is transmitted to a plurality of receivers. Receivers store at least a subset of the traffic enforcement camera information available from the server and synchronize to it using periodic transmitted updates. Receivers compare receiver location data with stored camera location data, and display or generate audible alerts when the receiver is within a selected geographic range of a traffic enforcement camera. Alerts can be filtered as to camera type. A alerts can employ different color camera icons superimposed on a screen map depending on camera type or whether the camera is newly added.

公开(公告)号：US11720227B2

公开(公告)日：2023-08-08

申请号：US16747624

申请日：2020-01-21

Applicant: Sirius XM Radio Inc.

Inventor： Richard A. Michalski ,  Stuart A. Cox ,  Paul D. Marko ,  Mark Rindsberg ,  Greg Nease ,  Glenn Peffers

IPC: H04H20/40 ,  G06F3/0482 ,  H04H20/74 ,  G06F3/04842 ,  G06F3/04847 ,  H04B7/185 ,  H04H60/91 ,  H04H20/26

CPC classification number: G06F3/0482 ,  G06F3/04842 ,  G06F3/04847 ,  H04B7/1851 ,  H04H20/74 ,  H04H20/26 ,  H04H20/40 ,  H04H60/91

Abstract: A method and apparatus are provided for generating a personalized radio channel playlist by simultaneously buffering multiple received channels from one or more source streams, and then selecting songs or tracks to playback from the buffered channels. Users can specify favorite channels for building their personal playlists, or multiple default playlist channels can be provided by genre or channels related in some other way. Navigation tools permit users to skip ahead and backward in the playback stream. A personalized radio channel playlist can be implemented as (1) content selected from buffered channels based on user preferences for artists, songs and the like, or (2) as a Mix Channel in which content from selected buffered channels is automatically mixed for playback in response to selection of a preset button assigned to the Mix Channel.

公开(公告)号：US20230162746A1

公开(公告)日：2023-05-25

申请号：US17873664

申请日：2022-07-26

Applicant: Sirius XM Radio Inc.

Inventor： Raymond Lowe ,  Christopher Ward ,  Charles W. Christine

IPC: G10L19/16 ,  G11B27/038 ,  G10L19/26 ,  G06F9/50 ,  H04H60/04 ,  G10L19/008

CPC classification number: G10L19/167 ,  G11B27/038 ,  G10L19/26 ,  G06F9/5044 ,  H04H60/04 ,  G10L19/008

Abstract: Systems and methods are presented for cross-fading (or other multiple clip processing) of information streams on a user or client device, such as a telephone, tablet, computer or MP3 player, or any consumer device with audio playback. Multiple clip processing can be accomplished at a client end according to directions sent from a service provider that specify a combination of (i) the clips involved; (ii) the device on which the cross-fade or other processing is to occur and its parameters; and (iii) the service provider system. For example, a consumer device with only one decoder, can utilize that decoder (typically hardware) to decompress one or more elements that are involved in a cross-fade at faster than real time, thus pre-fetching the next element(s) to be played in the cross-fade at the end of the currently being played element. The next elements(s) can, for example, be stored in an input buffer, then decoded and stored in a decoded sample buffer, all prior to the required presentation time of the multiple element effect. At the requisite time, a client device component can access the respective samples of the decoded audio clips as it performs the cross-fade, mix or other effect. Such exemplary embodiments use a single decoder and thus do not require synchronized simultaneous decodes.

公开(公告)号：US20230011998A1

公开(公告)日：2023-01-12

申请号：US17677867

申请日：2022-02-22

Applicant: Sirius XM Radio Inc.

Inventor： Raymond Lowe ,  Christopher Ward

IPC: G11B27/038 ,  G06F3/04847 ,  G06F3/16 ,  G06F9/445 ,  G06F9/50 ,  G06Q30/02 ,  G06Q30/06 ,  G10H1/00 ,  G10H1/06 ,  G11B27/10 ,  G11B27/32 ,  H04L67/306 ,  G06F3/0481

Abstract: In exemplary embodiments of the present invention systems and methods are provided to implement and facilitate cross-fading, interstitials and other effects/processing of two or more media elements in a personalized media delivery service so that each client or user has a consistent high quality experience. The effects or crossfade processing can occur on the broadcast, publisher or server-side, but can still be personalized to a specific user, thus still allowing a personalized experience for each individual user, in a manner where the processing burden is minimized on the downstream side or client device. This approach enables a consistent user experience, independent of client device capabilities, both static and dynamic. The cross-fade can be implemented after decoding the relevant chunks of each component clip, processing, recoding and rechunking, or, in a preferred embodiment, the cross-fade or other effect can be implemented on the relevant chunks to the effect in the compressed domain, thus obviating any loss of quality by re-encoding. A large scale personalized content delivery service can be implemented by limiting the processing to essentially the first and last chunks of any file, since there is no need to processing the full clip. In exemplary embodiments of the present invention this type of processing can easily be accommodated in cloud computing technology, where the first and last files may be conveniently extracted and processed within the cloud to meet the required load. Processing may also be done locally, for example, by the broadcaster, with sufficient processing power to manage peak load.

公开(公告)号：US20220328051A1

公开(公告)日：2022-10-13

申请号：US17522595

申请日：2021-11-09

Applicant: Sirius XM Radio Inc.

Inventor： Raymond Lowe ,  Mark Kalman ,  Deepen Sinha ,  Christopher Ward

IPC: G10L19/00 ,  G11B27/038 ,  H04H60/04 ,  H04H20/38 ,  G11B27/031

Abstract: Systems and methods are presented for efficient cross-fading of compressed domain information streams on a user/client device. Exemplary systems may provide cross-fade between AAC/Enhanced AAC Plus information streams, between MP3 information streams, or between information streams of unmatched formats. These systems are distinguished in that cross-fade is directly applied to compressed bitstreams so a single decode operation is performed on the resulting bitstream. Thus, a set of frames from each input stream associated with the time interval in which a cross fade is decoded, and combined and recoded with a cross fade or other effect now in the compressed bitstream. Once sent through the client device's decoder, the user hears the transitional effect. The only input data that is decoded and processed is that associated with the portion of each stream used the crossfade, blend or other interstitial, and thus the vast majority of input streams are left compressed.

公开(公告)号：US11170791B2

公开(公告)日：2021-11-09

申请号：US16526296

申请日：2019-07-30

Applicant: Sirius XM Radio Inc.

Inventor： Raymond Lowe ,  Mark Kalman ,  Deepen Sinha ,  Christopher Ward

IPC: G10L19/00 ,  G11B27/038 ,  H04H60/04 ,  H04H20/38 ,  G11B27/031

Abstract: Systems and methods are presented for efficient cross-fading (or other multiple clip processing) of compressed domain information streams on a user or client device, such as a telephone, tablet, computer or MP3 player, or any consumer device with audio playback. Exemplary implementation systems may provide cross-fade between AAC/Enhanced AAC Plus (EAACPlus) information streams or between MP3 information streams or even between information streams of unmatched formats (e.g. AAC to MP3 or MP3 to AAC). Furthermore, these systems are distinguished by the fact that cross-fade is directly applied to the compressed bitstreams so that a single decode operation may be performed on the resulting bitstream. Moreover, using the described methods, similar cross fade in the compressed domain between information streams utilizing other formats of compression, such as, for example, MP2, AC-3, PAC, etc. can also be advantageously implemented. Thus, in exemplary embodiments of the present invention a set of frames from each input stream associated with the time interval in which a cross fade is decoded, and combined and recoded with a cross fade or other effect now in the compressed bitstream. Once sent through the client device's decoder, the user hears the transitional effect. The only input data that is decoded and processed is that associated with the portion of each stream used in the crossfade, blend or other interstitial, and thus the vast majority of the input streams are left compressed.

公开(公告)号：US10999116B1

公开(公告)日：2021-05-04

申请号：US16655822

申请日：2019-10-17

Applicant: Sirius XM Radio Inc.

Inventor： Edward Schell ,  Carl Scarpa

IPC: H04L27/26 ,  H04L25/02 ,  H04L25/06

Abstract: Systems and methods for enabling pre-compensation of timing offsets in OFDM receivers without invalidating channel estimates are described. Timing offset estimations may be sent along with the received OFDM symbols for FFT computation and generating a de-rotated signal output. The timing offset estimation may provide a reference point for dynamic tracking of timing for an OFDM signal and estimated based on an integral value associated with the OFDM signal.

公开(公告)号：US10903974B2

公开(公告)日：2021-01-26

申请号：US16521880

申请日：2019-07-25

Applicant: Sirius XM Radio Inc.

Inventor： Carl Scarpa ,  Edward Schell

IPC: H03D3/34 ,  H04L7/033

Abstract: Systems and methods for maintaining synchronization of repeater networks with Global Positioning System (GPS) signals using phase locked loops (PLLs) and based on generation of predicted control words for controlling local oscillator frequencies is described. The predicted control words can be generated based on performing a linear fit of control words generated over a predetermined duration of time. Phase locked loops with additional false GPS pulse identification and GPS signal loss compensation circuitry can enforce a false pulse count threshold and/or an error threshold. The additional circuitry and prediction of control words can overcome errors in GPS receiver outputs and maintain accuracy of signal timings across single frequency networks using inexpensive local oscillators.

公开(公告)号：US10812310B1

公开(公告)日：2020-10-20

申请号：US16655859

申请日：2019-10-17

Applicant: Sirius XM Radio Inc.

Inventor： Edward Schell ,  Carl Scarpa

IPC: H03D1/00 ,  H04L27/06 ,  H04L27/26 ,  H04B7/185

Abstract: Systems and methods for a non-data-aided (NDA) approach to advanced OFDM timing are provided. This approach allows for accurate OFDM symbol timing and synchronization by avoiding inter-symbol interference (ISI) in multipath environments where an earliest arriving signal may not be the strongest signal. The NDA approach may rely on generating and applying a bias correction to a combined correlation result of the multi-path signals.