EXHIBIT B

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 1 of 11
US7916877B2 Alto Professional Trouper Portable PA (“The Accused Product”)

17. A method of 

operation for a switching 

component forming a 

part of a modular audio 

unit comprising an interunit communication 

component providing 

inter-unit 

communications with at 

least one peer system, 

comprising:

The accused product practices a method of operation for a switching component (e.g., the component of 

the accused product which switches the input source from an Line input to Bluetooth, or vice versa, among 

other possible switching scenarios) forming a part of a modular audio unit (e.g., the accused product) 

comprising an inter-unit communication component (e.g., Bluetooth chip of the accused product for 

communication with other Bluetooth devices) providing inter-unit communications (e.g., Bluetooth 

communication) with at least one peer system (e.g., a smartphone).

https://www.altoprofessional.com/products/trouper

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 2 of 11
https://www.altoprofessional.com/products/trouper

receiving first signals 

corresponding to first 

entertainment content 

from a player device;

The accused product practices receiving first signals (e.g., Line input signals) corresponding to first 

entertainment content (e.g., content from external audio device via Line-in jack) from a player device 

(e.g., an external audio device).

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 3 of 11
https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

receiving second signals 

corresponding to second 

entertainment content 

from the inter-unit 

communication 

component; and

The accused product practices receiving second signals (e.g., audio signals via Bluetooth from a 

smartphone) corresponding to second entertainment content (e.g., audio content from the Bluetooth paired 

smartphone) from the inter-unit communication component (e.g., Bluetooth chip of the accused product

for communication with other Bluetooth devices).

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 4 of 11
https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

selectively outputting the 

first signals and the 

second signals to a 

playback component 

wherein the player 

device and the playback 

component are separate 

from one another and 

wherein both the player 

device and the playback 

The accused product practices selectively outputting the first signals (e.g., audio signals via Line Input 

from an external audio device) and the second signals (e.g., audio content from the Bluetooth paired 

smartphone) to a playback component (e.g., external speaker/amplifier/home audio system) wherein the 

player device (e.g., external audio device) and the playback component (e.g., external 

speaker/amplifier/home audio system) are separate from one another and wherein both the player device 

and the playback component are external to the modular audio unit (e.g., the accused product).

As shown below, playback component (e.g., external speaker/amplifier/home audio system), player 

device (e.g., external audio device), and modular audio unit (e.g., the accused product) are all individual 

separate components.

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 5 of 11
component are external 

to the modular audio 

unit.

https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 6 of 11
https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

As shown below, the modular unit receives signal from external audio device in the form of a first signal 

(e.g., Line input signal), and from Bluetooth paired smartphone in the form of the second signal (e.g., 

received Bluetooth signal).

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 7 of 11
https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 8 of 11
https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

19. The method of claim 

17 wherein the playback 

component comprises a 

speaker.

The playback component (e.g., external speaker/amplifier/home audio system) utilized by the accused 

product comprises a speaker.

https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 9 of 11
20. The method of claim 

17 wherein the second 

entertainment content is 

entertainment content 

received by the inter-unit 

communication 

component from a peer 

system from the one or 

more peer systems, and 

selectively outputting 

comprises outputting the 

second signals 

corresponding to the 

second entertainment 

content received from the 

peer system to the 

playback component.

The second entertainment content is entertainment content (e.g., audio content from the Bluetooth paired 

smartphone) received by the inter-unit communication component from a peer system (e.g., Bluetooth 

chip of the accused product for communication with other Bluetooth devices)) from the one or more peer 

systems (e.g., various Bluetooth based devices), and selectively outputting comprises outputting the 

second signals (e.g., received Bluetooth signals) corresponding to the second entertainment content (e.g., 

audio content from the Bluetooth paired smartphone) received from the peer system (e.g., the smartphone) 

to the playback component (e.g., external speaker/amplifier/home audio system).

https://www.altoprofessional.com/downloads/Trouper-UserGuide-v1.7.pdf

Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 10 of 11
Case 0:22-cv-61793-WPD Document 1-2 Entered on FLSD Docket 09/22/2022 Page 11 of 11