EP1676432A2 - Transmission d'audio et de donnees multiplexees sur des canaux de distribution de contenus numeriques - Google Patents

Transmission d'audio et de donnees multiplexees sur des canaux de distribution de contenus numeriques

Info

Publication number
EP1676432A2
EP1676432A2 EP04794805A EP04794805A EP1676432A2 EP 1676432 A2 EP1676432 A2 EP 1676432A2 EP 04794805 A EP04794805 A EP 04794805A EP 04794805 A EP04794805 A EP 04794805A EP 1676432 A2 EP1676432 A2 EP 1676432A2
Authority
EP
European Patent Office
Prior art keywords
audio
content
data
data content
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04794805A
Other languages
German (de)
English (en)
Inventor
Riza Dr. Director of Systems Eng. AKTURAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sirius XM Radio Inc
Original Assignee
Sirius XM Radio Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sirius XM Radio Inc filed Critical Sirius XM Radio Inc
Publication of EP1676432A2 publication Critical patent/EP1676432A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18523—Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/71—Wireless systems
    • H04H20/74—Wireless systems of satellite networks

Definitions

  • This invention relates to methods and systems for transmission of signals comprising combined, multiplexed audio and data content to a plurality of receivers that can output both the audio and data content of such signals from a common channel.
  • These systems and methods are especially useful for transmitting, receiving and outputting such signals from terrestrial and satellite transmitters of Satellite Digital Audio ' Radio Systems (SDARS).
  • SDARS Satellite Digital Audio ' Radio Systems
  • Satellite Digital Audio Radio Services such as those provided by Sirius Satellite Radio Inc. and XM Satellite Radio, Inc
  • SDARS Satellite Digital Audio Radio Services
  • receivers In such systems, receivers often work better with satellite signal transmissions in rural areas, and with terrestrial signal transmission in more urbanized areas.
  • SDARS systems provide various broadcast content (i.e. audio and data) delivery services over a large system service area, e.g. CONUS (the mainland United States).
  • CONUS the mainland United States
  • Signal delivery is made to subscribing receivers within a system service area from geostationary or geo -synchronous satellite networks, simultaneously with ground-based terrestrial signal delivery networks.
  • this invention could be applicable to a wide range of digital signal transmission systems, preferred embodiments relate to SDARS systems.
  • This invention provides systems and methods to transmit, receive and output audio and data content from a single logical channel.
  • Preferred embodiments comprise a transmission module that can transmit multiple logical channels, with each channel delivering signals comprising both audio and data content.
  • Such a transmission module multiplexes, preferably in separate packets, content from one or more audio channels, with content from one or more data channels, using an audio/data multiplexer module. This module time-multiplexes the selected multiple audio and data channels into a single output signal for delivery to a common transmission channel.
  • the multiplexer preferably accommodates variable rate audio and variable rate data transmissions.
  • the user can also receive data in the same logical channel transmission mechanism.
  • An example of such data is a digital picture of the artist performing a currently-playing song. More generally, the data may include information about currently-playing or to-be-played audio information, or other text such as information about currently active channels carrying e.g. weather, graphics, or news.
  • the data content may contain the picture or a graphical representation of the artist of the currently playing song on the audio channel; the data may also contain other types of data that may be relevant to the user such as weather text or graphics.
  • Time- multiplexed audio content and data content are preferably tagged with headers to denote the content type in a given packet of information transmitted from the multiplexed channel.
  • Preferred embodiments also comprise receiver modules that can receive and select a single logical channel.
  • These modules comprise an audio/data de-multiplexer module that receives and de-multiplexes signals comprising multiplexed audio and data content from a logical channel into separate paths.
  • a user can choose to output from a receiver one of the following channels: a single audio channel, or a single data channel, or a multiplexed audio and data channel in which case the data content is output prom a data port on the receiver while the user is listening to the audio content from an audio port.
  • Identification information of the signal from each logical channel can be transmitted from a service channel, enabling a receiver to monitor and learn the content type of each logical channel when signal reception begins and while signal reception is ongoing.
  • these systems and methods can multiplex music and the musician's picture or video over the same logical SDARS channel. Only one physical and logical channel demodulator is needed in the receiver for reception of this combined audio and data.
  • the receiver may also output audio and data from separate ' audio and data ports.
  • the drawing shows transmission module 10 that multiplexes content from selected audio channels 11 and 12 with content from one or more data channels 13 and 14 using an audio/data multiplexing module.
  • module 10 time-multiplexes the selected audio and multiple data channels at block 19 into a single output signal 20, and sends the combined content signal, via logical channelization 21, to physical channelization and transmission 22.
  • Receive module 30 receives and selects single logical channel 32.
  • Module 30 includes audio/data de-multiplexing module 31 that receives, and physically dechannelizes the signal at block 39, and de-multiplexes the multiplexed audio and data content from logical channel 32 into separate paths 33 and 34. If the selected logical channel is an audio-only or a data-only channel, the content is sent to its proper audio decoding or data processing route. If the selected channel is a multiplexed channel, the receiver outputs variable-rate audio content 36 and data content 37 from a single path, or from separate multiple paths, to an output port or device after passing the audio content packets from audio A/D (analog-to-digital) converter/decoder 35 and after passing the data content from data processing module 38.
  • A/D analog-to-digital

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention porte sur des systèmes et des procédés de multiplexage de contenus à partir de canaux audio à vitesse variable avec des contenus issus d'un ou plusieurs canaux de données au moyen d'un module de multiplexage audio/de données. Ce module multiplexe dans le temps plusieurs canaux audio et de données en une seule sortie de canal de données, et l'envoie à un canal logique. Les paquets audio et de données dans le signal multiplexé sont étiquetés sur des paquets d'informations audio ou de données dans le signal multiplexé. Des modules de réception reçoivent et sélectionnent un seul canal logique à sortir. Ces modules comprennent des modules de démultiplexage audio/de données qui reçoivent et démultiplexent le contenu audio et de données multiplexé issu d'un canal logique en trajets séparés. Les utilisateurs de ce système peuvent écouter un contenu audio tout en recevant en même temps un contenu de données ; tel que des images d'artiste ou des informations météorologiques.
EP04794805A 2003-10-22 2004-10-12 Transmission d'audio et de donnees multiplexees sur des canaux de distribution de contenus numeriques Withdrawn EP1676432A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69124203A 2003-10-22 2003-10-22
PCT/US2004/033549 WO2005043881A2 (fr) 2003-10-22 2004-10-12 Transmission d'audio et de donnees multiplexees sur des canaux de distribution de contenus numeriques

Publications (1)

Publication Number Publication Date
EP1676432A2 true EP1676432A2 (fr) 2006-07-05

Family

ID=34549874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04794805A Withdrawn EP1676432A2 (fr) 2003-10-22 2004-10-12 Transmission d'audio et de donnees multiplexees sur des canaux de distribution de contenus numeriques

Country Status (2)

Country Link
EP (1) EP1676432A2 (fr)
WO (1) WO2005043881A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10133314B2 (en) 2014-05-26 2018-11-20 Apple Inc. Portable computing system
US10228721B2 (en) 2014-05-26 2019-03-12 Apple Inc. Portable computing system
CN207586791U (zh) 2014-09-30 2018-07-06 苹果公司 便携式计算系统
WO2016111829A1 (fr) * 2015-01-09 2016-07-14 Apple Inc. Connecteur flexible dans un dispositif informatique portable
US10162390B2 (en) 2015-01-16 2018-12-25 Apple Inc. Hybrid acoustic EMI foam for use in a personal computer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239540A (en) * 1990-11-27 1993-08-24 Scientific-Atlanta, Inc. Method and apparatus for transmitting, receiving and communicating digital data signals with corresponding program data signals which describe the digital data signals
FR2723279B1 (fr) * 1994-07-29 1996-09-06 Europ Agence Spatiale Systeme d'emission numerique par satellite
US5886995A (en) * 1996-09-05 1999-03-23 Hughes Electronics Corporation Dynamic mapping of broadcast resources
US6618367B1 (en) * 1999-12-16 2003-09-09 Agere Systems Inc. Transmission frame structure for a satellite digital audio radio system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005043881A3 *

Also Published As

Publication number Publication date
WO2005043881A3 (fr) 2006-07-06
WO2005043881A2 (fr) 2005-05-12

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