# US 11,122,016 B2 · Wireless display streaming of protected content > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,016 B2 - Document ID: US11122016B2 - Status: Granted - Kind: B2 - Application number: 16/840,989 - Filed: 2020-04-06 - Published: 2020-10-22 - Granted: 2021-09-14 - Earliest claimed: 2016-06-30 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Changliang Wang - Web page: https://patentgrep.com/patent/US11122016B2 ## CPC - H04L 63/0428: {wherein the data content is protected, e.g. by encrypting or encapsulating the payload} - G06F 21/10: Protecting distributed programs or content, e.g. vending or licensing of copyrighted material (protection in video systems or pay television H04N7/16) {; Digital rights management [DRM]} - G06F 21/105: {Arrangements for software license management or administration, e.g. for managing licenses at corporate level} - H04L 9/088: {Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms (network architectures or network communication protocols for using time-dependent keys in a packet data network H04L63/068)} - H04L 9/14: using a plurality of keys or algorithms - H04L 9/3247: {involving digital signatures} - H04L 65/1094: Inter-user-equipment sessions transfer or sharing - H04L 65/612: for unicast - H04L 65/70: Media network packetisation - H04L 65/762: {at the source (reformatting of additional data in video distribution servers H04N21/2355)} - H04L 67/104: Peer-to-peer [P2P] networks - H04N 21/2347: involving video stream encryption - H04N 21/2541: {Rights Management (protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08)} - H04N 21/4363: Adapting the video stream to a specific local network, e.g. a Bluetooth® network - H04N 21/43637: {involving a wireless protocol, e.g. Bluetooth®, RF or wireless LAN [IEEE 802.11] (arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114)} - H04N 21/4627: Rights management {associated to the content (security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08)} - H04W 12/03: Protecting confidentiality, e.g. by encryption - H04W 76/10: Connection setup - G06F 2221/2107: File encryption - H04L 2209/603: Digital right managament [DRM] - H04L 2209/76: Proxy, i.e. using intermediary entity to perform cryptographic operations - H04L 2209/80: Wireless - H04W 84/12: WLAN [Wireless Local Area Networks] - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A system and method of wireless display, including a transmitter processing a first encrypted content into a second encrypted content without decoding, and transferring the second encrypted content over a wireless display connection to a receiver. ## Claims ### Claim 1 A transmitter configured for wireless display, comprising: a processor; and memory storing instructions that when executed by the processor cause the transmitter to: divide encrypted content into video content and audio content; acquire a license to obtain a first key; decrypt the video content; decrypt the audio content; packetize the decrypted video content; packetize the decrypted audio content; encrypt the decrypted video content without decoding the decrypted video content; encrypt the decrypted audio content without decoding the decrypted audio content; compress a user interface (UI) stream; combine the compressed UI stream, the encrypted video content and the encrypted audio content without composing, wherein the encrypted content comprises a first-key encrypted content, and wherein the combined encrypted video content and encrypted audio content comprises a second-key encrypted content; and transfer the combined compressed UI stream, encrypted video content and encrypted audio content wirelessly to a receiver. ### Claim 2 (depends on 1) The transmitter of claim 1, wherein the transmitter is a computing device and is to negotiate a wireless display connection with the receiver to wirelessly couple the transmitter and the receiver, wherein the combined encrypted content is transferred over the wireless display connection to the receiver in response to initiation of the transfer by a user. ### Claim 3 (depends on 2) The transmitter of claim 2, wherein the wireless display connection is compliant with a wireless standard. ### Claim 4 (depends on 1) The transmitter of claim 1, wherein the first key comprises a Digital Rights Management (DRM) key, and wherein the second key comprises a High Definition Copy Protocol (HDCP) key. ### Claim 5 A method of wireless display, comprising: dividing encrypted content into video content and audio content; decrypting the video content; decrypting the audio content; packetizing the decrypted video content; packetizing the decrypted audio content; encrypting the decrypted video content without decoding the decrypted video content; encrypting the decrypted audio content without decoding the decrypted audio content; combining the encrypted video content and the encrypted audio content; compressing a user interface (UI) stream; combining the compressed UI stream with the encrypted video content and the encrypted audio content, wherein the encrypted content comprises a first-key encrypted content, and wherein the encrypted video content and the encrypted audio content comprise a second-key encrypted content; and transferring the combined compressed UI stream, encrypted video content and encrypted audio content wirelessly to a receiver. ### Claim 6 (depends on 5) The method of claim 5, comprising negotiating a wireless connection between the transmitter and the receiver to wirelessly couple the transmitter and the receiver. ### Claim 7 (depends on 6) The method of claim 6, wherein the wireless connection is compliant with a wireless standard, and wherein the wireless display connection is compliant with a wireless standard. ### Claim 8 (depends on 5) The method of claim 5, comprising the transmitter performing a license acquisition to obtain a first key, wherein the processing comprises: decrypting the video content and the audio content with the first key; and encrypting the decrypted video content and encrypted audio content with a second key different than the first key. ### Claim 9 (depends on 8) The method of claim 8, wherein the first key comprises a Digital Rights Management (DRM) key, and wherein the second key comprises a High Definition Copy Protocol (HDCP) key. ### Claim 10 (depends on 5) The method of claim 5, wherein packetizing comprises subjecting the decrypted video content and/or the decrypted video content to a packetized elementary stream (PES) packetizer. ### Claim 11 (depends on 5) The method of claim 5, comprising negotiating a wireless connection between the transmitter and the receiver to wirelessly couple the transmitter and the receiver, wherein the transmitter does not decode the decrypted video content, and wherein the transmitter does not decode the decrypted audio content. ### Claim 12 (depends on 11) The method of claim 11, wherein the wireless connection is compliant with a wireless standard. ### Claim 13 (depends on 5) The method of claim 5, comprising the transmitter receiving the encrypted content and performing a license acquisition to obtain a first key, wherein decrypting the video content comprises decrypting the video content with the first key, and wherein decrypting the audio content comprises decrypting the audio content with the first key. ### Claim 14 (depends on 13) The method of claim 13, wherein encrypting the decrypted video content comprises encrypting the decrypted video content with a second key different than the first key, and wherein encrypting the decrypted audio content comprises encrypting the decrypted audio content with the second key. ### Claim 15 (depends on 5) The method of claim 5, comprising the transmitter packetizing the decrypted video content, and the transmitter packetizing the decrypted audio content, wherein the encrypted content comprises a first-key encrypted content, and wherein the combined encrypted video content and encrypted audio content comprises a second-key encrypted content. ### Claim 16 (depends on 5) The method of claim 5, comprising the transmitter compressing a user interface (UI) stream, and wherein combining the encrypted video content and the encrypted audio content comprises the transmitter combining the compressed UI stream with the encrypted video content and the encrypted audio content without composing. ### Claim 17 A tangible, non-transitory, computer-readable medium comprising instructions that, when executed by a processor of a computing device, cause the computing device to: divide encrypted content into video content and audio content; acquire a license to obtain a first key; decrypt the video content with the first key; decrypt the audio content with the first key; encrypt the decrypted video content without decoding the decrypted video content; encrypt the decrypted audio content without decoding the decrypted audio content; combine the encrypted video content and the encrypted audio content; and transfer the combined encrypted video content and encrypted audio content wirelessly to a receiver, wherein to transfer the combined encrypted video content and encrypted audio content wirelessly, the computing device is to: negotiate a wireless connection between a transmitter and the receiver to wirelessly couple the transmitter and the receiver, wherein the transmitter comprises the computing device; and establish a wireless display service connection between the transmitter and the receiver, wherein the transfer of the combined encrypted video content and encrypted audio content is in response to initiation of the transfer by a user. ### Claim 18 (depends on 17) The non-transitory, computer-readable medium of claim 17, wherein: the encrypted content comprises content encrypted by a first key; the video content comprises video encrypted by the first key; the audio content comprises audio encrypted by the first key; the combined encrypted video content and encrypted audio content comprises content encrypted by a second key different than the first key; the encrypted video content comprises video encrypted by the second key; and the encrypted audio content comprises audio encrypted by the second key. ### Claim 19 (depends on 17) The non-transitory, computer-readable medium of claim 17, wherein the instructions when executed by the processor cause the computing device to packetize the decrypted video and packetize the decrypted audio, wherein to encrypt the decrypted video content comprises encrypting the decrypted video content with a second key different from the first key, and wherein to encrypt the decrypted audio content comprises encrypting the decrypted audio content with the second key. ### Claim 20 (depends on 17) The non-transitory, computer-readable medium of claim 17, wherein the instructions when executed by the processor cause the computing device to compress a user interface (UI) stream, and wherein to combine the encrypted video content and the encrypted audio content comprises combining the encrypted video content and the encrypted audio content without composing. ### Claim 21 (depends on 17) The non-transitory, computer-readable medium of claim 17, wherein the instructions when executed by the processor cause the computing device to negotiate a wireless connection with the receiver. ### Claim 22 (depends on 1) The transmitter of claim 1, wherein the instructions when executed by the processor cause the transmitter to acquire a license to obtain a first key, wherein to decrypt the video content comprises decrypting the video content with the first key, wherein to decrypt the audio content comprises decrypting the audio content with the first key, wherein to encrypt the decrypted video content comprises encrypting the decrypted video content with a second key different from the first key, and wherein to encrypt the decrypted audio content comprises encrypting the decrypted audio content with the second key.