# US 9,521,111 B2 · Methods, systems, and products for address translation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,111 B2 - Document ID: US9521111B2 - Status: Granted - Kind: B2 - Application number: 14/460,465 - Filed: 2014-08-15 - Published: 2014-12-04 - Granted: 2016-12-13 - Earliest claimed: 2011-06-28 - Assignees: AT&T Intellectual Property I, L.P. - Applicants: AT&T Intellectual Property I, L.P. - Inventors: Jayanta Das; Bhavin A. Doshi; Anand Kumar Singh; Saurabh Kumar - Web page: https://patentgrep.com/patent/US9521111B2 ## CPC - H04L 61/256: NAT traversal - H04L 12/66: Arrangements for connecting between networks having differing types of switching systems, e.g. gateways - H04L 61/25: of the same type - H04L 61/2514: between local and global IP addresses - H04L 61/2567: for reachability, e.g. inquiring the address of a correspondent behind a NAT server - H04L 61/2585: through application level gateway [ALG] - H04L 12/2834: {Switching of information between an external network and a home network (access arrangements H04L12/2856)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Methods, systems, and products translate addresses in residential networks. A residential gateway translates requests for content such that the residential gateway appears as both a requestor and a destination for requested content, regardless of an actual requesting device or a desired output device. ## Claims ### Claim 1 A method, comprising: receiving, by a gateway, an electronic request for content sent from a requesting device, the electronic request for the content specifying a different output device to which the content is delivered; storing, by the gateway, log entries that electronically log the electronic request for the content to a requesting address associated with the requesting device, to a destination address associated with the different output device, and to an identifier associated with the content; generating, by the gateway, a translated electronic request for the content, the translated electronic request for the content substituting a gateway network address associated with the gateway as both a requestor and a destination for the content; sending, by the gateway, the translated electronic request for the content into a data network; receiving, by the gateway, the content; querying, by the gateway, the log entries for the identifier associated with the content: retrieving, by the gateway, the destination address from the log entries, the destination address electronically logged in association with the identifier associated with the content received by the gateway; and forwarding, by the gateway, the content to the destination address associated with the output device that is different from the requesting device. ### Claim 2 (depends on 1) The method of claim 1, further comprising receiving the content addressed to the gateway network address. ### Claim 3 (depends on 1) The method of claim 1, further comprising receiving a selection of the different output device in a graphical listing of output devices. ### Claim 4 (depends on 3) The method of claim 3, further comprising populating the graphical listing with the output devices. ### Claim 5 A system, comprising: a processor operating in a gateway; and a memory device, the memory device storing instructions, the instructions when executed causing the processor to perform operations, the operations comprising: receiving an electronic request for content sent from a requesting device, the electronic request for the content specifying an output device that is different from the requesting device; storing log entries that electronically associate the electronic request for the content to a requesting address associated with the requesting device, to a destination address associated with the output device, and to an identifier associated with the content; generating a translated electronic request for the content, the translated electronic request for the content substituting a gateway network address associated with the gateway as both a requestor and a destination for the content; sending the translated electronic request for the content from the gateway into a data network; receiving the content at the gateway; querying the log entries for the identifier associated with the content received at the gateway; retrieving the destination address from the log entries, the destination address electronically logged in association with the identifier associated with the content received by the gateway; and forwarding the content received by the gateway to the destination address associated with the output device that is different from the requesting device. ### Claim 6 (depends on 5) The system of claim 5, wherein the operations further comprise querying a network address table to retrieve the destination address associated with the output device. ### Claim 7 (depends on 5) The system of claim 5, wherein the operations further comprise receiving the content addressed to the gateway network address. ### Claim 8 (depends on 5) The system of claim 5, wherein the operations further comprise retrieving the destination address associated with the output device. ### Claim 9 (depends on 5) The system of claim 5, wherein the operations further comprise receiving a selection of the output device in a graphical listing of output devices. ### Claim 10 (depends on 9) The system of claim 9, wherein the operations further comprise populating the graphical listing. ### Claim 11 A memory device storing computer readable instructions that when executed by a processor at a gateway cause the processor to perform operations, the operations comprising: receiving an electronic request for content sent from a requesting device, the electronic request for the content specifying a different output device from the requesting device; storing an entry in an electronic log, the entry electronically associating the electronic request for the content to a requesting address associated with the requesting device, to a destination address associated with the different output device, and to an identifier associated with the content; generating a translated electronic request for the content, the translated electronic request for the content substituting a gateway network address associated with the gateway as both a requestor and a destination for the content; sending the translated electronic request for the content from the gateway into a data network; receiving the content at the gateway in response to the translated electronic request; querying the electronic log for the identifier associated with the content received at the gateway to determine the different output device; querying a network address table to determine the destination address associated with the different output device; and forwarding the content from the gateway to the different output device associated with the destination address. ### Claim 12 (depends on 11) The memory device of claim 11, wherein the operations further comprise populating the network address table. ### Claim 13 (depends on 11) The memory device of claim 11, wherein the operations further comprise receiving the content addressed to the gateway network address. ### Claim 14 (depends on 11) The memory device of claim 11, wherein the operations further comprise retrieving the destination address. ### Claim 15 (depends on 11) The memory device of claim 11, wherein the operations further comprise sending the content to the destination address. ### Claim 16 (depends on 15) The memory device of claim 15, wherein the operations further comprise receiving a selection of the different output device in a graphical listing of output devices.