Resources Contact Us Home
Multiple partial encryption

Image Number 16 for United States Patent #7760879.

A method of encrypting a digital television signal carried out in any operative order involves duplicating packets in the digital television signal so as to create first and second duplicate packets; encrypting the first duplicate packets according to a first encryption method to create first encrypted packets; encrypting the second duplicate packets according to a second encryption method to create second encrypted packets; identifying packets in the digital television signal that are of a packet type, while other packets are not of the packet type; replacing the identified packets in the digital television signal with corresponding first and second encrypted packets to produce a multiple partially encrypted digital television signal comprising the other packets that are unencrypted and the first and second encrypted packets; and distributing the multiple partially encrypted digital television signal. This abstract is not to be considered limiting as other embodiments may include more or fewer or differing elements than appear in the abstract.

  Recently Added Patents
Rim for a TV receiver
Method and apparatus for connecting signal lines of multiple layers to certain contacts while preventing connections with other contacts
Churn prediction and management system
Detecting the type of NAT firewall using messages
High gradient lens for charged particle beam
Registry key federation systems and methods
White light emitting diode (LED) lighting device
  Randomly Featured Patents
Tong support carriage for use in press bending glass sheets
Photovoltaic module and method for producing same
Process for manufacturing a sweetener and use thereof
Device for the determination of the quantitative composition of gases
Apparatus for treating and preventing development of bed sores
Exercise repetitious motion counter
Mount with anti-rotation feature
Light irradiation device, fine particle analyzing apparatus, and light irradiation method
Flowmeter for providing synchronized flow data and respiratory gas samples to a medical mass spectrometer
Tennis rackets