High data rate interface

• US 8,635,358 B2
• Filed: 10/05/2010
• Issued: 01/21/2014
• Est. Priority Date: 09/10/2003
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Anderson, Jon James, Steele, Brian W., Wiley, George Alan, Shekhar, Shashank
• Primary Examiner(s): SERRAO, RANODHI N
• Application Number:
  US12/898,114
• Publication Number:
  US 20110022719A1
• Time in Patent Office: 1,204 Days
• Field of Search: 709/231, 370/311
• US Class Current: 709/231
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 69/14 Multichannel or multilink protocols
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04M 1/72409 by interfacing with external accessories hands-free H04M1/60
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate
• CPC Class Codes: Y02D 30/70 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

1. A method for a host to receive packets from a client in a mobile display digital interface (MDDI) communication system, the method comprising:

setting one or more flags in a reverse link encapsulation packet to request the client to send a client capability packet to the host;

providing a reverse data packets field within the reverse link encapsulation packet, the reverse data packets field having a duration;

sending the reverse link encapsulation packet from the host to the client over a communication link, the reverse link encapsulation packet allowing the client to take control of the communication link and send one or more packets to the host over the communication link during the duration of the reverse data packets field;

receiving the client capability packet sent from the client to the host during the duration of the reverse data packets field; and

receiving an error report packet sent from the client to the host during the duration of the reverse data packets field, the error report packet comprising an indicator that the client does not support a sample data rate.

2. The method of claim 1 wherein setting one or more flags in the reverse link encapsulation packet to request the client to send a client capability packet to the host comprises setting one or more flags in the reverse link encapsulation packet to request audio stream support data.

3. The method of claim 2 wherein the client capability packet comprises the audio stream support data.

4. The method of claim 3 wherein the audio stream support data comprises an indicator that the client does not support a reverse audio data stream.

5. The method of claim 3 wherein the audio stream support data comprises an indicator that the client supports at least one data rate.

6. The method of claim 5 further comprising selecting by the host an operating data rate from the at least one data rate.

7. A system for a host to receive packets from a client in a mobile display digital interface (MDDI) communication system, the system comprising:

a processor comprising;

means for setting one or more flags in a reverse link encapsulation packet to request the client to send a client capability packet to the host;

means for providing a reverse data packets field within the reverse link encapsulation packet, the reverse data packets field having a duration;

means for sending the reverse encapsulation packet from the host to the client over a communication link, the reverse link encapsulation packet allowing the client to take control of the communication link and send one or more packets to the host over the communication link during the duration of the reverse data packets field;

means for receiving the client capability packet sent from the client to the host during the duration of the reverse data packets field; and

means for receiving an error report packet sent from the client to the host during the duration of the reverse data packets field, the error report packet comprising an indicator that the client does not support a sample data rate.

8. The system of claim 7 wherein the means for setting one or more flags in the reverse link encapsulation packet to request the client to send a client capability packet to the host comprises a means for setting one or more flags in the reverse link encapsulation packet to request audio stream support data.

9. The system of claim 8 wherein the client capability packet comprises the audio stream support data.

10. The system of claim 9 wherein the audio stream support data comprises an indicator that the client does not support a reverse audio data stream.

11. The system of claim 9 wherein the audio stream support data comprises an indicator that the client supports at least one data rate.

12. The system of claim 11 further comprising means for selecting an operating data rate from the at least one data rate by the host.

13. A computer program product comprising:

a non-transitory computer-readable medium comprising;

program instructions for causing one or more flags to be set in a reverse link encapsulation packet to request the client to send a client capability packet to the host;

program instructions for causing a reverse data packets field to be provided within the reverse link encapsulation packet, the reverse data packets field having a duration;

program instructions for causing the reverse encapsulation packet to be sent from the host to the client over a communication link, the reverse link encapsulation packet allowing the client to take control of the communication link and send one or more packets to the host over the communication link during the duration of the reverse data packets field;

program instructions for causing the client capability packet sent from the client to be received by the host during the duration of the reverse data packets field; and

program instructions for causing an error report packet sent from the client to be received by the host during the duration of the reverse data packets field, the error report packet comprising an indicator that the client does not support a sample data rate.

14. The computer program product of claim 13, wherein the program instructions for causing one or more flags to be set in a reverse link encapsulation packet to request the client to send a client capability packet to the host comprise program instructions for causing one or more flags to be set in a reverse link encapsulation packet to request audio stream support data.

15. The computer program product of claim 13, wherein the client capability packet comprises the audio stream support data.

16. The computer program product of claim 15 wherein the audio stream support data comprises an indicator that the client does not support a reverse audio data stream.

17. The computer program product of claim 15 wherein the audio stream support data comprises an indicator that the client supports at least one data rate.

18. The computer program product of claim 17 further comprising program instructions for causing the host to select an operating data rate from the at least one data rate.