GENERATING AND IMPLEMENTING A COMMUNICATION PROTOCOL AND INTERFACE FOR HIGH DATA RATE SIGNAL TRANSFER

• US 20110013681A1
• Filed: 07/15/2010
• Published: 01/20/2011
• Est. Priority Date: 09/06/2001
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Steele, Brian, Wiley, George A., Zou, Qiuzhen
• Granted Patent: US 8,694,663 B2
• Time in Patent Office: Days
• US Class Current: 375/222
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G09G 2370/10 Use of a protocol of communication by packets in interfaces along the display data pipeline
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: G09G 5/008 Clock recovery
• CPC Class Codes: G09G 5/12 Synchronisation between the display unit and other units, e.g. other display units, video-disc players
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/283 in response to processing delays, e.g. caused by jitter or round trip time [RTT]
• CPC Class Codes: H04L 47/41 by acting on aggregated flows or links
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04L 9/40 Network security protocols

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. 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;

means for transferring data in the form of packets over said communications path using said link controllers; and

means for compensating mismatched delays in at least two signals of the transferred digital data by substantially aligning an arrival time of the at least two signals.