# US 12,003,563 B2 · Seamless transitions between media modes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,563 B2 - Document ID: US12003563B2 - Status: Granted - Kind: B2 - Application number: 17/952,109 - Filed: 2022-09-23 - Published: 2024-03-28 - Granted: 2024-06-04 - Earliest claimed: 2022-09-23 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Richard Turner; Laurent Wojcieszak; Derrick Rea; Raghavendra Bhat Noojady Krishna; Bharath Kumar Tirunagaru - Web page: https://patentgrep.com/patent/US12003563B2 ## CPC - H04L 65/65: Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP] - H04L 65/80: Responding to QoS - H04J 3/0632: {Synchronisation of packets and cells, e.g. transmission of voice via a packet network, circuit emulation service [CES] (queuing arrangements in packet switching elements H04L49/90; synchronising systems for the synchronous transmission of a pulse code modulated video signal with one or more other pulse code modulated signals H04N7/56)} - H04L 65/61: for supporting one-way streaming services, e.g. Internet radio - H04L 65/70: Media network packetisation - H04L 65/765: {intermediate} - H04N 21/43072: {of multiple content streams on the same device} - H04N 21/4392: {involving audio buffer management} - H04W 88/04: adapted for relaying to or from another terminal or user - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - 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 Methods, systems, and devices for wireless communications are described. In a wireless audio system, a first wireless device may generate a first media stream associated with a first media mode and a second media stream associated with a second media mode, buffer the first media stream in accordance with a first latency time value for adjusting a first latency time of the first media stream and buffering the second audio stream, independently from the first media stream, in accordance with a second latency time value for adjusting a second latency time of the second media stream, and transmit a mixed media stream including the buffered first media stream mixed with the buffered second media stream to a second wireless device. ## Claims ### Claim 1 A method for wireless communication at a first wireless device, comprising: generating a first media stream associated with a first media mode and a second media stream associated with a second media mode; buffering the first media stream in accordance with a first latency time value for adjusting a first latency time of the first media stream and buffering the second media stream, independently from the first media stream, in accordance with a second latency time value for adjusting a second latency time of the second media stream; transmitting a mixed media stream including the buffered first media stream mixed with the buffered second media stream to a second wireless device; mixing, after the buffering, the first media stream at a first sample rate and the second media stream at a second sample rate; jointly encoding the mixed first media stream and the second media stream; setting the first latency time value associated with the first media stream based at least in part on the first sample rate; and resizing and shifting the second media stream between a transmission state at the first wireless device and an encoder input at the first wireless device. ### Claim 2 (depends on 1) The method of claim 1, further comprising: terminating the second media stream associated with the second media mode; and increasing, in response to terminating the second media stream, a latency of the first media stream. ### Claim 3 (depends on 1) The method of claim 1, further comprising: terminating the first media stream associated with the first media mode; and transitioning from operating in a dual-media mode in which the first media stream and the second media stream are classified as independent from each other to operating in a single media mode based at least in part on terminating the first media stream. ### Claim 4 (depends on 1) The method of claim 1, further comprising: inserting an overlap add packet block into the first media stream and the second media stream prior to the mixing, wherein the overlap add packet block is associated with transitioning from operating in a dual-media mode in which the first media stream and the second media stream are classified as independent from each other to operating in a single media mode. ### Claim 5 (depends on 1) The method of claim 1, wherein mixing the first media stream and the second media stream comprises mixing the first media stream and the second media stream at a third sample rate prior to the mixing. ### Claim 6 (depends on 1) The method of claim 1, wherein the first media mode comprises a high quality mode and the second media mode comprises a low-latency mode. ### Claim 7 (depends on 1) The method of claim 1, wherein the first wireless device comprises a media source device and the second wireless device comprises a media sink device. ### Claim 8 A method for wireless communication at a first wireless device, comprising: generating a first media stream associated with a first media mode and a second media stream associated with a second media mode; buffering the first media stream in accordance with a first latency time value for adjusting a first latency time of the first media stream and buffering the second media stream, independently from the first media stream, in accordance with a second latency time value for adjusting a second latency time of the second media stream; transmitting a mixed media stream including the buffered first media stream mixed with the buffered second media stream to a second wireless device; refraining from jointly encoding the first media stream and the second media stream for a duration of the second latency time value; disabling a first target wake time associated with the first media stream prior to mixing the first media stream at a first sample rate and the second media stream at a second sample rate; enabling a second target wake time associated with the first media stream; and mixing the first media stream and the second media stream based at least in part on the second target wake time. ### Claim 9 (depends on 8) The method of claim 8, further comprising: enabling the second target wake time associated with the first media stream; and encoding the first media stream based at least in part on the second target wake time. ### Claim 10 An apparatus for wireless communication at a first wireless device, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: generate a first media stream associated with a first media mode and a second media stream associated with a second media mode; buffer the first media stream in accordance with a first latency time value for adjusting a first latency time of the first media stream and to buffer the second media stream, independently from the first media stream, in accordance with a second latency time value for adjusting a second latency time of the second media stream; transmit a mixed media stream including the buffered first media stream mixed with the buffered second media stream to a second wireless device; mix, in time and after the buffering, the first media stream at a first sample rate and the media stream at a second sample rate; jointly encode the first media stream and the second media stream; set the first latency time value associated with the first media stream based at least in part on the first sample rate; and resize and shift the second media stream between a transmission state at the first wireless device and an encoder input at the first wireless device. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the instructions are further executable by the processor to cause the apparatus to: terminate the second media stream associated with the second media mode; and increase, in response to terminating the second media stream, a latency of the first media stream. ### Claim 12 (depends on 10) The apparatus of claim 10, wherein the instructions are further executable by the processor to cause the apparatus to: terminate the first media stream associated with the first media mode; and transition from operating in a dual-media mode in which the first media stream and the second media stream are classified as independent from each other to operating in a single media mode based at least in part on terminating the first media stream. ### Claim 13 (depends on 10) The apparatus of claim 10, wherein the instructions are further executable by the processor to cause the apparatus to: insert an overlap add packet block into the first media stream and the second media stream prior to the mixing, wherein the overlap add packet block is associated with transitioning from operating in a dual-media mode in which the first media stream and the second media stream are classified as independent from each other to operating in a single media mode. ### Claim 14 (depends on 10) The apparatus of claim 10, wherein mixing the first media stream and the second media stream comprises mixing the first media stream and the second media stream at a third sample rate prior to the mixing. ### Claim 15 (depends on 10) The apparatus of claim 10, wherein the first media mode comprises a high quality mode and the second media mode comprises a low-latency mode. ### Claim 16 (depends on 10) The apparatus of claim 10, wherein the first wireless device comprises a media source device and the second wireless device comprises a media sink device. ### Claim 17 An apparatus for wireless communication at a first wireless device, comprising: a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: generate a first media stream associated with a first media mode and a second media stream associated with a second media mode; buffer the first media stream in accordance with a first latency time value for adjusting a first latency time of the first media stream and to buffer the second media stream, independently from the first media stream, in accordance with a second latency time value for adjusting a second latency time of the second media stream; transmit a mixed media stream including the buffered first media stream mixed with the buffered second media stream to a second wireless device; refrain from jointly encoding the first media stream and the second media stream for a duration of the second latency time value; disable a first target wake time associated with the first media stream prior to mixing the first media stream at a first sample rate and the second media stream at a second sample rate; enable a second target wake time associated with the first media stream; and mix, in time, the first media stream and the second media stream based at least in part on the second target wake time. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the instructions are further executable by the processor to cause the apparatus to: enable the second target wake time associated with the first media stream; and encode the first media stream based at least in part on the second target wake time. ### Claim 19 An apparatus for wireless communication at a first wireless device, comprising: means for generating a first media stream associated with a first media mode and a second media stream associated with a second media mode; means for buffering the first media stream in accordance with a first latency time value, for adjusting a first latency time of the first media stream, and for buffering the second media stream in accordance with a second latency time value for adjusting a second latency time of the second media stream; means for transmitting a mixed media stream including the buffered first media stream mixed with the buffered second media stream to a second wireless device; means for mixing, in time and after the buffering, the first media stream at a first sample rate and the second media stream at a second sample rate; means for jointly encoding the first media stream and the second media stream; means for setting the first latency time value associated with the first media stream based at least in part on the first sample rate; and means for resizing and shifting the second media stream between a transmission state at the first wireless device and an encoder input at the first wireless device. ### Claim 20 (depends on 19) The apparatus of claim 19, further comprising: means for terminating the second media stream associated with the second media mode; and means for increasing, in response to terminating the second media stream, a latency of the first media stream. ### Claim 21 (depends on 19) The apparatus of claim 19, further comprising: means for terminating the first media stream associated with the first media mode; and means for transitioning from operating in a dual-media mode in which the first media stream and the second media stream are classified as independent from each other to operating in a single media mode based at least in part on terminating the first media stream. ### Claim 22 A non-transitory computer-readable medium storing code for wireless communication at a first wireless device, the code comprising instructions executable by a processor to: generate a first media stream associated with a first media mode and a second media stream associated with a second media mode; buffer the first media stream in accordance with a first latency time value for adjusting a first latency time of the first media stream and to buffer the second media stream in accordance with a second latency time value for adjusting a second latency time of the second media stream; transmit a mixed media stream including the buffered first media stream mixed with the buffered second media stream to a second wireless device; mix, in time and after the buffering, the first media stream at a first sample rate and the media stream at a second sample rate; jointly encode the first media stream and the second media stream; set the first latency time value associated with the first media stream based at least in part on the first sample rate; and resize and shift the second media stream between a transmission state at the first wireless device and an encoder input at the first wireless device.