High data rate interface apparatus and method

• US 8,630,305 B2
• Filed: 06/03/2005
• Issued: 01/14/2014
• Est. Priority Date: 06/04/2004
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Anderson, Jon James, Steele, Brian, Wiley, George Alan, Shekhar, Shashank
• Primary Examiner(s): Zhou, Yong
• Application Number:
  US11/145,357
• Publication Number:
  US 20050271072A1
• Time in Patent Office: 3,147 Days
• Field of Search: 370/232, 370/248, 370/253, 370/419, 370/498, 370/516, 370/519, 345/156, 709/200, 709217-219, 709/230, 709/238
• US Class Current: 370/419
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 2012/6483 Video, e.g. MPEG
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• 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 30/70 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. An apparatus for connecting two clients to a host in an internal mode of a mobile display digital interface (MDDI) system comprising:

a first terminated stub at a first location at an end of a cable with a first length comprising L_stub1;

a first client device comprising a transmit and receive capability at said first location;

a second terminated stub at a second location on said cable with a second length comprising L_stub2; and

a second client device comprising a receive capability at said second location, wherein the first length and the second length are determined based on a minimum rise time of a driver output signal and a velocity factor of at least one transmission line.

2. A method for connecting two clients to a host in an internal mode of a mobile display digital interface (MODI) system, the method comprising the steps of:

providing a first terminated stub at a first location at an end of a cable with a first length comprising L_stub1;

connecting a first client device comprising a transmit and receive capability at the first location;

providing a second terminated stub at a second location on the cable with a second length comprising L_stub2; and

connecting a second client device comprising a receive capability at the second location, wherein the first length and the second length are determined based on a minimum rise time of a driver output signal and a velocity factor of at least one transmission line.

3. The method of claim 2 further comprising optimizing the first length and the second length for a predefined signal quality.

4. An apparatus for connecting two clients to a host in an internal mode of a mobile display digital interface (MDDI) system comprising:

means for terminating a first stub at a first location at an end of a cable with a first length comprising L_stub1;

means for providing a transmit and receive capability at said first location;

means for terminating a second stub at a second location on said cable with a second length comprising L_stub2; and

means for providing a receive capability at said second location, wherein the first length and the second length are determined based on a minimum rise time of a driver output signal and a velocity factor of at least one transmission line.