HDCP link integrity checking with detection of enhanced link verification support
US9161081B2 · kind B2 · utility
0Cited by
2References
13Claims
0Family size
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Key dates
| Filing date | Feb 9, 2011 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Jan 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/43635
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for checking HDCP link integrity in a High-bandwidth Digital Content Protection (HDCP) transmitter. From an HDCP receiver communicatively coupled to the HDCP transmitter by an HDCP-protected interface, a single-bit value indicative of HDCP 1.1 feature support is read. When the single-bit value is true, HDCP Enhanced Link Verification is used in the HDCP transmitter. When the single-bit value is false, the method determines whether the HDMI receiver supports HDCP Enhanced Link Verification, and if so, HDCP Enhanced Link Verification is used in the HDCP transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.