Methods and apparatus for harmonization of interface profiles

• US 20070257923A1
• Filed: 03/15/2007
• Published: 11/08/2007
• Est. Priority Date: 03/15/2006
• Status: Abandoned Application

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Whitby-Strevens, Colin
• Application Number:
  US11/724,994
• Publication Number:
  US 20070257923A1
• Time in Patent Office: Days
• US Class Current: 345/520
• CPC Class Codes: G09G 2330/06 Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
• 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 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: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols

Abstract

Methods and apparatus for harmonizing or unifying at least partly heterogeneous device profiles within electronic devices. In one embodiment, processing or protocol layers within two or more separate device profiles (such as for example the Embedded and External profiles of the UDI specification) are harmonized, thereby permitting the use of a single logical paradigm (for at least one component or process) in place of two or more heterogeneous paradigms under the prior art. In the exemplary context of the aforementioned UDI specification, only a single implementation of the link layer framing logic of a source device, and the frame parsing logic of the sink is needed. Similarly, only one set of compliance tests for this unified paradigm need be developed and implemented.

Claims

1. A data device adapted to communicate with a second device over an interface, comprising:

a processor;

a storage device in data communication with said processor;

an interface adapted for data communication with said second device; and

a computer program operative to run on said processor;

wherein said computer program comprises a substantially unified data link layer protocol adapted to support two at least partly heterogeneous device profiles.

2. The data device of claim 1, wherein said data comprises video data, and said protocol comprises a unified display interface (UDI) compliant protocol.

3. The data device of claim 2, wherein said heterogeneous device profiles comprise the UDI Embedded Profile and the UDI External Profile.

4. The data device of claim 1, wherein the data device comprises a unified display interface (UDI) source, and the second device comprises a unified display interface (UDI) sink.

5. A method of unifying a plurality of at least party heterogeneous device profiles, comprising:

identifying two or more of said profiles requiring harmonization;

evaluating the two or more profiles to be harmonized in terms of at least their requirements and capabilities; and

harmonizing the two or more profiles so as to provide at least one common functional entity.

6. The method of claim 5, wherein said heterogeneous device profiles comprise the UDI Embedded Profile and the UDI External Profile, and said evaluating comprises evaluating data link layer protocols associated with respective ones of said Profiles.

7. The method of claim 6, wherein said at least one common entity comprises at least one of:

(i) a first implementation of a link layer framing logic, and (ii) a second implementation of a link layer frame parsing logic; and

wherein said first and second implementations of said framing and parsing logic each support each of said device profiles.

8. The method of claim 7, wherein at least one of said implementations comprises using 8B10B symbol encoding to transport video data and related information using a video framing structure associated with only one of said device profiles.

9. A method of operating a device adapted to communicate video data, comprising:

assigning a plurality of control symbols associated with said video data;

transmitting at least some of said control symbols for each of a plurality of data lanes;

determining if any of the plurality of symbols are present on more than one of said plurality of lanes; and

if present, terminating a video data period.

10. The method of claim 9, further comprising transmitting subsequent ones of said control symbols by:

extending at least one of said subsequent symbols to generate an extended value;

scrambling said extended value to generate a second extended value;

encoding said second value as a corresponding symbol; and

transmitting said encoded symbol.

11. The method of claim 9, wherein the device comprises a UDI-compliant device.

12. The method of claim 10, further comprising:

evaluating said second extended value; and

if said second extended value comprises a designated symbol, then substituting a second designated symbol therefor.

13. A video data processing system, comprising:

a video data source; and

a video data sink;

wherein said source comprises a first implementation of a link layer framing logic, and said sink comprises a second implementation of a link layer frame parsing logic, said first and second implementations of said framing and parsing logic each supporting a plurality of device profiles.

14. The system of claim 13, wherein said plurality of device profiles comprise (i) the UDI Embedded Profile;

and (ii) the UDI External Profile.

15. The system of claim 13, wherein at least one of said implementations comprises using 8B10B symbol encoding to transport video data and related information using a video framing structure associated with one of said device profiles.

16. The system of claim 13, wherein said link layer framing logic and said link layer frame parsing logic can be compliance-tested using a common testing framework.

17. A data device, comprising:

a processor;

a storage device in data communication with said processor;

a display or rendering device;

an interface adapted for data communication between said processor and said display or rendering device; and

a computer program operative to run on said processor;

wherein said computer program comprises a substantially unified data link layer protocol adapted to support two at least partly heterogeneous device profiles.

18. The device of claim 17, wherein said device comprises a portable computer, said display device comprises a liquid crystal (LCD) or thin-film transistor (TFT) display, and said interface comprises a UDI-compliant interface.