CA2548412A1 - High data rate interface with improved link synchronization - Google Patents

High data rate interface with improved link synchronization Download PDF

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Publication number
CA2548412A1
CA2548412A1 CA002548412A CA2548412A CA2548412A1 CA 2548412 A1 CA2548412 A1 CA 2548412A1 CA 002548412 A CA002548412 A CA 002548412A CA 2548412 A CA2548412 A CA 2548412A CA 2548412 A1 CA2548412 A1 CA 2548412A1
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CA
Canada
Prior art keywords
host
data
client
packets
link
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.)
Granted
Application number
CA002548412A
Other languages
French (fr)
Other versions
CA2548412C (en
Inventor
Jon James Anderson
Brian Steele
George Alan Wiley
Shashank Shekhar
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.)
Qualcomm Inc
Original Assignee
Qualcomm Incorporated
Jon James Anderson
Brian Steele
George Alan Wiley
Shashank Shekhar
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 Qualcomm Incorporated, Jon James Anderson, Brian Steele, George Alan Wiley, Shashank Shekhar filed Critical Qualcomm Incorporated
Priority to CA2731269A priority Critical patent/CA2731269C/en
Priority to CA2731363A priority patent/CA2731363C/en
Priority to CA2731265A priority patent/CA2731265A1/en
Publication of CA2548412A1 publication Critical patent/CA2548412A1/en
Application granted granted Critical
Publication of CA2548412C publication Critical patent/CA2548412C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40052—High-speed IEEE 1394 serial bus
    • H04L12/40071—Packet processing; Packet format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40052—High-speed IEEE 1394 serial bus
    • H04L12/40117—Interconnection of audio or video/imaging devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H04M1/724094—Interfacing with a device worn on the user's body to provide access to telephonic functionalities, e.g. accepting a call, reading or composing a message
    • H04M1/724097—Worn on the head
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A data interface for transferring digital data between a host and a client over a communication path using packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data. The signal protocol is used by link controllers configured to generate, transmit, and receive packets forming the communications protocol, and to form digital data into one or more types of data packets, with at least one residing in the host device and being coupled to the client through the communications path. The interface provides a cost-effective, low power, bi-directional, high-speed data transfer mechanism over a short-range "serial" type data link, which lends itself to implementation with miniature connectors and thin flexible cables which are especially useful in connecting display elements such as wearable micro-displays to portable computers and wireless communication devices.

Claims (39)

1. A digital data interface for transferring digital presentation data at a high rate between a host device and a client device over a communication path comprising:
a plurality of packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data between a host and a client over said communication path; and at least one link controller residing in said host device coupled to said client through said communications path, being configured to generate, transmit, and receive packets forming said communications protocol, and to form digital presentation data into one or more types of data packets.
2. The interface of Claim 1 further comprising said packets grouped together within media frames that are communicated between said host and client having a pre-defined fixed length with a pre-determined number of said packets have differing and variable lengths.
3. The interface of Claim 1 further comprising a Sub-frame Header Packet positioned at the beginning of transfers of packets from said host.
4. The interface of Claim 1 wherein said link controller is a host link controller and further comprising at least one client link controller residing in said client device coupled to said host through said communications path, being configured to generate, transmit, and receive packets forming said communications protocol, and to form digital presentation data into one or more types of data packets.
5. The interface of Claim 2 further comprising:
a plurality of transfer modes, each allowing the transfer of different maximum numbers of bits of data in parallel over a given time period, with each mode selectable by negotiation between said host and client link drivers; and wherein said transfer modes are dynamically adjustable between said modes during transfer of data.
6. The interface of Claim 1 further comprising a Link Shutdown type packet for transmission by said host to said client to terminate the transfer of data in either direction over said communication path.
7. The interface of Claim 1 further comprising means for said client to wake up said host from a hibernation state.
8. A method of transferring digital data at a high rate between a host device and a client device over a communication path for presentation to a user, comprising:
generating one or more of a plurality of pre-defined packet structures and linking them together to form a pre-defined communication protocol;
communicating a pre-selected set of digital control and presentation data between said host and said client devices over said communication path using said communication protocol;
coupling at least one host link controller residing in said host device to said client device through said communications path, the host link controller being configured to generate, transmit, and receive packets forming said communications protocol, and to form digital presentation data into one or more types of data packets;
and transferring data in the form of packets over said communications path using said link controllers.
9. The method of Claim 8 further comprising grouping said packets together within media frames for communication between said host and client, the media frames having a pre-defined fixed length with a pre-determined number of said packets have differing and variable lengths.
10. The method of Claim 8 further comprising commencing transfer of packets from said host with a Sub-frame Header type packet.
11. The method of Claim 8 further comprising generating, transmitting, and receiving packets forming said communications protocol through at least one client link controller residing in said client device coupled to said host device through said communications path.
12. The method of Claim 11 further comprising:
negotiating between host and client link drivers the use of one of a plurality of transfer modes in each direction, each allowing the transfer of different maximum numbers of bits of data in parallel over a given time period; and dynamically adjusting between said transfer modes during transfer of data.
13. The method of Claim 8 further comprising terminating the transfer of data in either direction over said communication path using a Link Shutdown type packet for transmission by said host to said client.
14. The method of Claim 8 further comprising waking up said host from a hibernation state by communication with said client.
15. Apparatus for transferring digital data at a high rate between a host device and a client device over a communication path for presentation to a user, comprising:
at least one host link controller disposed in said host device for generating one or more of a plurality of pre-defined packet structures and linking them together to form a pre-defined communication protocol, and for communicating a pre-selected set of digital control and presentation data between said host and said client devices over said communication path using said communication protocol;
at least one client controller disposed in said client device and coupled to said host link controller through said communications path; and each link controller being configured to generate, transmit, and receive packets forming said communications protocol, and to form digital presentation data into one or more types of data packets.
16. The apparatus of Claim 15 wherein said host controller comprises a state machine.
17. The apparatus of Claim 15 wherein said host controller comprises a general purpose signal processor.
18. The apparatus of Claim 15 further comprising a Sub-frame Header type packet at the commencing of transfer of packets from said host.
19. The apparatus of Claim 15 wherein said host controller comprises one or more differential line drivers; and said client receiver comprises one or more differential line receivers coupled to said communication path.
20. The apparatus of Claim 15 wherein said host and client link controllers are configured to use of one of a plurality of transfer modes in each direction, each allowing the transfer of different maximum numbers of bits of data in parallel over a given time period; and being capable of being dynamically adjusting between said transfer modes during transfer of data.
21. The apparatus of Claim 15 wherein said host controller is configured to transmit a Link Shutdown type packet to said client means for terminating the transfer of data in either direction over said communication path.

21. For use in an electronic system for transferring digital data at a high rate between a host device and a client device over a communication path for presentation to a user, a computer program product comprising:
a computer usable medium having computer readable program code means embodied in said medium for causing an application program to execute on the computer system, said computer readable program code means comprising:
a computer readable first program code means for causing the computer system to generate one or more of a plurality of pre-defined packet structures and link them together to form a pre-defined communication protocol;
a computer readable second program code means for causing the computer system to communicate a pre-selected set of digital control and presentation data between said host and said client devices over said communication path using said communication protocol;
a computer readable third program code means for causing the computer system to couple at least one host link controller disposed in said host device to at least one client controller disposed in said client device through said communications path, the link controllers being configured to generate, transmit, and receive packets forming said communications protocol, and to form digital presentation data into one or more types of data packets; and a computer readable fourth program code means for causing the computer system to transfer data in the form of packets over said communications path using said link controllers.
22. An apparatus for transferring digital data at a high rate between a host device and a client device over a communication path for presentation to a user, comprising:
means for generating one or more of a plurality of pre-defined packet structures and linking them together to form a pre-defined communication protocol;
means for communicating a pre-selected set of digital control and presentation data between said host and said client devices over said communication path using said communication protocol;
means for coupling at least two link controllers together through said communications path, one in each of said host and client and each being configured to generate, transmit, and receive packets forming said communications protocol, and to form digital presentation data into one or more types of data packets; and means for transferring data in the form of packets over said communications path using said link controllers.
23. The apparatus of Claim 22 further comprising means for commencing transfer of packets from said host with a Sub-frame Header type packet.
24. The apparatus of Claim 22 further comprising means for requesting display capabilities information from the client by a host link controller so as to determine what type of data and data rates said client is capable of accommodating through said interface.
25. A processor for use in an electronic system for transferring digital data at a high rate between a host device and a client device over a communication path, the processor configured to generate one or more of a plurality of pre-defined packet structures and link them together to form a pre-defined communication protocol; to form digital presentation data into one or more types of data packets; communicate a pre-selected set of digital control and presentation data between said host and said client devices over said communication path using said communication protocol; and transfer data in the form of packets over said communications path.
26. A state machine for use in obtaining synchronization in an electronic system transferring digital data at a high rate between a host device and a client device over a communication path, the state machine configured to have at least one Async Frames State synchronization state, at least two Acquiring Sync States synchronization states, and at least three In-Sync States synchronization states.
27. A state machine for use in obtaining synchronization in an electronic system transferring digital data at a high rate between a host device and a client device over a communication path, the state machine configured to have at least one Acquiring Sync States synchronization states, and at least two In-Sync States synchronization states.
28. The state machine of Claim 27, wherein one condition for shifting between an Acquiring Sync State and a first In-Sync State is detecting the presence of a synchronization pattern in the communication link.
29. The state machine of Claim 27, wherein a second condition for shifting between an Acquiring Sync State and a first In-Sync State is detecting the presence of a sub-frame header packet and good CRC value at a frame boundary.
30. The state machine of Claim 27, wherein one condition for shifting between a first In-Sync. State and an Acquiring Sync State is detecting the presence of no synchronization pattern or a bad CRC value at a sub-frame boundary.
31. The state machine of Claim 27, wherein one condition for shifting between a first In-Sync State and a second In-Sync State is detecting the presence of no synchronization pattern or a bad CRC value at a sub-frame boundary.
32. The method of Claim 12 further comprising waking up a communication link by driving a data line to a high state for at least 10 clock cycles and starting to transmit a strobe signal as if the data line was zero, by said host.
33. The method of Claim 32 further comprising driving the data line low for a predetermined number of clock cycles by said host while continuing to transmit a strobe signal after the host has driven the data line high for about 150 clock cycles.
34. The method of Claim 32 further comprising beginning to transmit the first sub-frame header packet by said host.
35. The method of Claim 33 further comprising counting at least 150 continuous clock cycles of the data line being high, followed by at least 50 continuous clock cycles of the data line being low, by said client.
36. The method of Claim 33 further comprising stopping driving the data line high by said client after the client counts 70 continuous clock cycles of the data being high
37. The method of Claim 36 further comprising counting another 80 continuous clock cycles of the data line being high to reach the 150 clock cycles of the data line being high by said client, and looking for about 50 clock cycles of the data line being low, and looking for the unique word.
38. The method of Claim 12 further comprising counting the number of clock cycles occurring until a one is sampled by said host, by sampling the data line on both the rising and falling edges during the reverse timing packet.
39. The method of Claim 12 further comprising counting the number of clock cycles occurring until a one is sampled by said host, by sampling the data line on both the rising and falling edges during the reverse timing packet.
CA2548412A 2003-12-08 2004-12-08 High data rate interface with improved link synchronization Expired - Fee Related CA2548412C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA2731269A CA2731269C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2731363A CA2731363C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2731265A CA2731265A1 (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US52799603P 2003-12-08 2003-12-08
US60/527,996 2003-12-08
PCT/US2004/041659 WO2005057881A1 (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization

Related Child Applications (3)

Application Number Title Priority Date Filing Date
CA2731269A Division CA2731269C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2731363A Division CA2731363C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2731265A Division CA2731265A1 (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization

Publications (2)

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CA2548412A1 true CA2548412A1 (en) 2005-06-23
CA2548412C CA2548412C (en) 2011-04-19

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CA2731269A Expired - Fee Related CA2731269C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2548412A Expired - Fee Related CA2548412C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2731363A Expired - Fee Related CA2731363C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2731265A Abandoned CA2731265A1 (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization

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CA2731363A Expired - Fee Related CA2731363C (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization
CA2731265A Abandoned CA2731265A1 (en) 2003-12-08 2004-12-08 High data rate interface with improved link synchronization

Country Status (9)

Country Link
US (2) US8670457B2 (en)
EP (7) EP2247069B1 (en)
JP (2) JP4902355B2 (en)
KR (1) KR100906319B1 (en)
CN (4) CN101867516B (en)
CA (4) CA2731269C (en)
MX (1) MXPA06006452A (en)
RU (1) RU2006124568A (en)
WO (1) WO2005057881A1 (en)

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