Inventor · disambiguated record
David D. Ha
Also filed as: HA DAVID D
15 granted patents·1 pending application·547 citations·filing 2000–2012
94Inventor score
Top patents by PatentIndex Score
16 records- 0198US6853728B1Video on demand pay per view services with unmodified conditional access functionalityDIRECTV GROUP INC·Filed 2000·Granted Feb 8, 2005·256 cites·37 claims
- 0294US7203311B1Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage deviceDIRECTV GROUP INC·Filed 2000·Granted Apr 10, 2007·65 cites·37 claims
- 0391US7804958B2Super encrypted storage and retrieval of media programs with smartcard generated keysDIRECTV GROUP INC·Filed 2008·Granted Sep 28, 2010·14 cites·16 claims
- 0491US7225458B2Method and apparatus for ensuring reception of conditional access information in multi-tuner receiversDIRECTV GROUP INC·Filed 2002·Granted May 29, 2007·50 cites·20 claims
- 0591US7203314B1Super encrypted storage and retrieval of media programs with modified conditional access functionalityDIRECTV GROUP INC·Filed 2000·Granted Apr 10, 2007·53 cites·39 claims
- 0690US7590243B2Digital media conditional access system for handling digital media contentDIRECTV GROUP INC·Filed 2005·Granted Sep 15, 2009·14 cites·36 claims
- 0785US8677152B2Method and apparatus for encrypting media programs for later purchase and viewingKAHN RAYNOLD M·Filed 2008·Granted Mar 18, 2014·7 cites·78 claims
- 0883US7457414B1Super encrypted storage and retrieval of media programs with smartcard generated keysDIRECTV GROUP INC·Filed 2000·Granted Nov 25, 2008·21 cites·34 claims
- 0982US8140859B1Secure storage and replay of media programs using a hard-paired receiver and storage deviceKAHN RAYNOLD M·Filed 2000·Granted Mar 20, 2012·17 cites·12 claims
- 1082US7480381B2Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage deviceDIRECTV GROUP INC·Filed 2007·Granted Jan 20, 2009·6 cites·31 claims
- 1181US7409562B2Method and apparatus for encrypting media programs for later purchase and viewingDIRECTV GROUP INC·Filed 2001·Granted Aug 5, 2008·26 cites·19 claims
- 1280US8782438B2Secure storage and replay of media programs using a hard-paired receiver and storage deviceKAHN RAYNOLD M·Filed 2012·Granted Jul 15, 2014·3 cites·22 claims
- 1369US7000241B2Method and apparatus for minimizing conditional access information overhead while ensuring conditional access information reception in multi-tuner receiversDIRECTV GROUP INC·Filed 2002·Granted Feb 14, 2006·10 cites·23 claims
- 1460US7835522B2Embedded blacklisting for digital broadcast system securityDIRECTV GROUP INC·Filed 2006·Granted Nov 16, 2010·1 cites·44 claims
- 1558US7039955B2Embedded blacklisting for digital broadcast system securityDIRECTV GROUP INC·Filed 2001·Granted May 2, 2006·4 cites·35 claims
- 1654US2007118770A1Secure storage and replay of media programs using a hard-paired receiver and storage deviceKAHN RAYNOLD M·Filed 2007·Application pending·0 cites
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