Copy Count for DTCP with an Abbreviation Hash Used for Check in Copy

A personal video recorder (PVR) configured for controlling copy count using a Digital Transmission Content Protection (DTCP) standard, the PVR comprising:

• a processor;
• and
• a memory device connected to the processor, the memory device storing code executable by the processor to perform the following steps:
• storing an original master copy of a first video content in the memory;
• copying the original master copy as a copy asset and transferring the copy asset from the PVR to a second video device on request for check out by the second video device and marking the transferred copy asset as Copy No More (CNM), and decrementing the copy count, and further creating and storing an abbreviated representation of the copy asset;
• receiving the copy asset checked back in to the PVR from the second video device in response to a MOVE command, the received copy asset being an externally created version of the abbreviated representation of the checked-out copy or the exact version of the previously checked-out copy;
• and
• comparing the checked in copy asset with the original master copy to determine if the copy asset and the master copy are from the identical first video content, and if so incrementing the copy count,
• wherein the abbreviated representation takes the form of a hash constructed from a hashing function.