Patents by Inventor Sachin Rajendra Kothari
Sachin Rajendra Kothari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11206089Abstract: Embodiments herein describe a system that includes a first Faraday cage defining a first aperture through which a first conveyor extends, a first wirelessly controlled machine disposed in the first Faraday cage, where the first wirelessly controlled machine is configured to transmit control signals using a first frequency range, a second Faraday cage defining a second aperture through which a second conveyor extends, and a second wirelessly controlled machine disposed in the second Faraday cage where the first wirelessly controlled machine is configured to transmit control signals using the first frequency range. Further, a portion of at least one of the first Faraday cage and the second Faraday cage is disposed between the first and second apertures.Type: GrantFiled: November 23, 2020Date of Patent: December 21, 2021Assignee: Amazon Technologies, Inc.Inventors: Josephine Ammer Bolotski, Emilia S. Buneci, Sachin Rajendra Kothari, Unnikrishnan Vadakkanmaruveedu
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Patent number: 11086336Abstract: Embodiments herein describe a controller for a machine that wirelessly transmits a destination address to a robot which is tasked with transporting an item to the destination corresponding to the received address. Using the address, the robot can select a predefined path stored in its memory for that address. Because multiple robots can move items in the machine at the same time, the robots may collide if their predefined paths intersect. The machine can use a variety of different techniques to prevent collisions between the robots as the robots deliver items to different locations along their predefined paths.Type: GrantFiled: June 5, 2018Date of Patent: August 10, 2021Assignee: Amazon Technologies, Inc.Inventors: Josephine Ammer Bolotski, Emilia S. Buneci, Sachin Rajendra Kothari, Unnikrishnan Vadakkanmaruveedu
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Publication number: 20210075521Abstract: Embodiments herein describe a system that includes a first Faraday cage defining a first aperture through which a first conveyor extends, a first wirelessly controlled machine disposed in the first Faraday cage, where the first wirelessly controlled machine is configured to transmit control signals using a first frequency range, a second Faraday cage defining a second aperture through which a second conveyor extends, and a second wirelessly controlled machine disposed in the second Faraday cage where the first wirelessly controlled machine is configured to transmit control signals using the first frequency range. Further, a portion of at least one of the first Faraday cage and the second Faraday cage is disposed between the first and second apertures.Type: ApplicationFiled: November 23, 2020Publication date: March 11, 2021Inventors: Josephine Ammer BOLOTSKI, Emilia S. BUNECI, Sachin Rajendra KOTHARI, Unnikrishnan VADAKKANMARUVEEDU
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Patent number: 10880018Abstract: RF shielding techniques are employed to prevent wireless signals transmitted from one machine from reaching another machine using the same frequency range. If the machines are spaced closely together, the wireless signals emitted by one machine may be received by the other, thereby causing interference. In one embodiment, one of the machines is placed in a Faraday cage which prevents it from transmitting wireless signals to, and receiving signals from, the other machine. In another embodiment, machines that use different channels are grouped into a first Faraday cage while machines that use the same channels as the machines in the first Faraday cage are placed in a second Faraday cage. In this manner, the machines in the two cages can reuse the same communication channels while being disposed proximate to each other in the shared space.Type: GrantFiled: June 5, 2018Date of Patent: December 29, 2020Assignee: Amazon Technologies, Inc.Inventors: Josephine Ammer Bolotski, Emilia S. Buneci, Sachin Rajendra Kothari, Unnikrishnan Vadakkanmaruveedu
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Patent number: 10735991Abstract: Embodiments herein describe wireless transmission techniques for mitigating interference between wirelessly controlled machines in a shared space. To mitigate interference, the machines may be assigned different channels within the same frequency band. However, if machines using the same channel in a frequency band receive each other's wireless signals, the wireless signals can interfere. To free up additional bandwidth, in one embodiment, the command signals are transmitted using a different frequency band than a heartbeat signal used to stop the machines in case of emergencies. In another embodiment, time multiplexing or directional antennas can be used to mitigate interference. In another example, antenna diversity and multiple-input-multiple output (MIMO) can be used to further focus the radiation pattern onto the desired machine while avoiding transmitting wireless signals to neighboring machines. In one embodiment, the machines may use dual-channels to transmit and receive duplicate data.Type: GrantFiled: October 26, 2017Date of Patent: August 4, 2020Assignee: Amazon Technologies, Inc.Inventors: Sachin Rajendra Kothari, Samuel Gardner Garrett, Seshachalamgupta Motamarri, Timothy Alan Talda
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Patent number: 10701586Abstract: Embodiments herein describe wireless transmission techniques for mitigating interference between wirelessly controlled machines in a shared space. To mitigate interference, the machines may be assigned different channels within the same frequency band. However, if machines using the same channel in a frequency band receive each other's wireless signals, the wireless signals can interfere. To free up additional bandwidth, in one embodiment, the command signals are transmitted using a different frequency band than a heartbeat signal used to stop the machines in case of emergencies. In another embodiment, time multiplexing or directional antennas can be used to mitigate interference. In another example, antenna diversity and multiple-input-multiple output (MIMO) can be used to further focus the radiation pattern onto the desired machine while avoiding transmitting wireless signals to neighboring machines. In one embodiment, the machines may use dual-channels to transmit and receive duplicate data.Type: GrantFiled: April 5, 2019Date of Patent: June 30, 2020Assignee: Amazon Technologies, Inc.Inventors: Sachin Rajendra Kothari, Samuel Gardner Garrett, Seshachalamgupta Motamarri, Timothy Alan Talda
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Publication number: 20190239116Abstract: Embodiments herein describe wireless transmission techniques for mitigating interference between wirelessly controlled machines in a shared space. To mitigate interference, the machines may be assigned different channels within the same frequency band. However, if machines using the same channel in a frequency band receive each other's wireless signals, the wireless signals can interfere. To free up additional bandwidth, in one embodiment, the command signals are transmitted using a different frequency band than a heartbeat signal used to stop the machines in case of emergencies. In another embodiment, time multiplexing or directional antennas can be used to mitigate interference. In another example, antenna diversity and multiple-input-multiple output (MIMO) can be used to further focus the radiation pattern onto the desired machine while avoiding transmitting wireless signals to neighboring machines. In one embodiment, the machines may use dual-channels to transmit and receive duplicate data.Type: ApplicationFiled: April 5, 2019Publication date: August 1, 2019Inventors: Sachin Rajendra KOTHARI, Samuel Gardner GARRETT, Seshachalamgupta MOTAMARRI, Timothy Alan TALDA
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Publication number: 20190132769Abstract: Embodiments herein describe wireless transmission techniques for mitigating interference between wirelessly controlled machines in a shared space. To mitigate interference, the machines may be assigned different channels within the same frequency band. However, if machines using the same channel in a frequency band receive each other's wireless signals, the wireless signals can interfere. To free up additional bandwidth, in one embodiment, the command signals are transmitted using a different frequency band than a heartbeat signal used to stop the machines in case of emergencies. In another embodiment, time multiplexing or directional antennas can be used to mitigate interference. In another example, antenna diversity and multiple-input-multiple output (MIMO) can be used to further focus the radiation pattern onto the desired machine while avoiding transmitting wireless signals to neighboring machines. In one embodiment, the machines may use dual-channels to transmit and receive duplicate data.Type: ApplicationFiled: October 26, 2017Publication date: May 2, 2019Inventors: Sachin Rajendra KOTHARI, Samuel Gardner GARRETT, Seshachalamgupta MOTAMARRI, Timothy Alan TALDA
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Patent number: 10278095Abstract: Embodiments herein describe wireless transmission techniques for mitigating interference between wirelessly controlled machines in a shared space. To mitigate interference, the machines may be assigned different channels within the same frequency band. However, if machines using the same channel in a frequency band receive each other's wireless signals, the wireless signals can interfere. To free up additional bandwidth, in one embodiment, the command signals are transmitted using a different frequency band than a heartbeat signal used to stop the machines in case of emergencies. In another embodiment, time multiplexing or directional antennas can be used to mitigate interference. In another example, antenna diversity and multiple-input-multiple output (MIMO) can be used to further focus the radiation pattern onto the desired machine while avoiding transmitting wireless signals to neighboring machines. In one embodiment, the machines may use dual-channels to transmit and receive duplicate data.Type: GrantFiled: October 26, 2017Date of Patent: April 30, 2019Assignee: Amazon Technologies, Inc.Inventors: Sachin Rajendra Kothari, Samuel Gardner Garrett, Seshachalamgupta Motamarri, Timothy Alan Talda