Patents on Ultrasonic Communication

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Beepcard Inc. N. Altman, A. Antebi, A. Atsmon, M. Cohen, and Z. Lev, ―Computer communications using acoustic signals,‖ U.S. Patent 7,480,692 B2, Jan. 2009. A method of communicating with an electronic device. The method includes providing an electronic device having an audible sound receiving and generating sub-system including a microphone, transmitting from a source at least one acoustic signal encoded with information, receiving said at least one acoustic signal by said microphone and determining a spatial position, distance or movement of the microphone relative to the source, responsive to the received at least one signal. A rather general system for data transmission with ultrasound is presented https://www.google.com/patents/US7480692
IBM 2012, Patent US9082413: Electronic transaction authentication based on sound proximity A computer program product comprises computer usable program code for receiving data describing a proposed electronic transaction between first and second communications devices. Additional computer usable program code is provided for generating a first audio signal by sound detected by a first microphone of the first communications device, and for generating a second audio signal by sound detected by a second microphone that is part of the second communications device. Still further computer usable program code provides for authenticating that the first communications device and the second communications device are in the same proximity in response to determining that the first and second audio signals were produced by the same sound event, and for completing the proposed electronic transaction between the first and second communications device in response to authenticating that the first and second communications devices are in close proximity. Goal: Pairing mobile devices: “authenticating that the first and second communications devices are in close proximity.” https://www.google.com/patents/US9082413?dq=US20140129231&hl=de&sa=X&ved=0ahUKEwjJwYHe2dvSAhVD6xQKHUXFA1gQ6AEIHjAA
Lee Weinblatt 2002, Patent US 20030144035 A1: Electronically generating and displaying a reward coupon Purchase incentives are provided to consumers in the form of electronically-displayed reward coupons. No paper and ink is required. The consumer can make a real time selection of a coupon related to a product in a commercial being shown on television, for example. A code transmitted with that commercial is stored if the consumer makes a selection, and that code is used to retrieve coupon display data from a set of pre-stored coupons. The retrieved coupon data is displayed on a portable device such as a personal digital assistant (PDA). The displayed coupon is process by the merchant, such as by scanning a bar code displayed by the PDA with the coupon. Goal: Purchase incentives are provided to consumers in the form of electronically-displayed reward coupons. No paper and ink is required. The consumer can make a real time selection of a coupon related to a product in a commercial being shown on television, for example. A code transmitted with that commercial is stored if the consumer makes a selection, and that code is used to retrieve coupon display data from a set of pre-stored coupons.

They use audio for this: “The speaker produces pressure waves in the air that can be detected by a microphone, for example, and with a frequency that is in what is scientifically regarded as the audible range of human hearing”

https://www.google.com/patents/US20030144035?dq=Patent+US+20030144035+A1&hl=en&sa=X&ved=0ahUKEwiG4KCyp-TQAhWBrxoKHUw1BSUQ6AEIHTAA
Raja Raman 2008, Patent US20100106647 A1, 2010: Method and system for close range communication using audio tones The present invention relates to a method for close range secured communication using audio tones and a system for carrying out such method. The invention is related to the field of financial transactions through relatively-mobile devices using audio tones. More particularly, the present invention is directed to a method for communicating information between two mobile phones using the speaker and Mic of the mobile devices Goal: payments with audio: “…close range secured communication using audio tones and a system for carrying out such method. The invention is related to the field of financial transactions through relatively-mobile devices using audio tones” https://www.google.com/patents/US20100106647
Dechina LLC 2014, Patent US9450812 B2, 2014: Remote system configuration via modulated audio The user interface of a mobile computing device is used to configure a target system by establishing a physical connection between a mobile computing device and a target system, such as an audio cable connection between audio jacks of the two or an acoustic coupling through air between a microphones and speakers of the two; establishing an audio or low ultrasonic signal communication session between the two; responsive to the target system entering a configuration mode, prompting a user via the user interface of the mobile computing device to prepare configuration parameter values for the target system; and implementing the configuration parameter values in the target system using the communication session and the physical connection. Goal: they use acoustic ultrasonic signals over the air to connect two devices for remote configuration. https://www.google.com/patents/US9450812
Lee Weinblatt EP2813993 A1, 2014: System and method for providing inaudible codes and corresponding information to users via their computing devices In accordance with embodiments of the inventions, systems and methods are provided to facilitate the processing of inaudible codes in audio and audio/visual streams broadcast over television, radio, computer, or in piped music or muzak, for example, by computing devices, such as mobile devices and computers, for example. The inaudible codes are associated with information provided by third parties, such as coupons, offers, advertising, explanatory information, etc. The mobile devices may include smart phones, tablets, laptop computers, digital readers, etc. Codes and corresponding offers may be provided to a computing device by a code/offer management system via a network, and stored by the computing device, upon the request of the respective device. When an inaudible code is received and identified by a respective device, it is compared to the stored codes and if there is a match, the corresponding offer may be identified and displayed or offered for display. Goal: “facilitate the processing of inaudible codes in audio and audio/visual streams broadcast over television, radio, computer, or in piped music, for example, by computing devices, such as mobile devices and computers…” “inaudible codes are associated with information provided by third parties, such as coupons, offers, advertising, explanatory information”, “corresponding offers may be provided to a computing device by a code/offer management system via a network”. They further state: “n computing devices that use an Android operating system, in contrast, in accordance with embodiments of the invention, codes may be processed even if a corresponding App is not open, as long as the corresponding App is operating in the background” https://www.google.com/patents/EP2813993A1?cl=en
Facebook 2015, Patent US 9098865 B2: Ultrasonic near-field communication Systems and methods for near-field communications with a mobile device are disclosed. In one embodiment, a computer-implemented method for near-field communication may comprise: detecting, by a source device located at a point-of-sale, the proximity of a receiving device; encoding purchase data on an audio signal with one or more ultrasonic frequencies; and transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device. Goal: “detecting, by a source device located at a point-of-sale, the proximity of a receiving device; encoding purchase data on an audio signal with one or more ultrasonic frequencies; and transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device”

This means: a mobile phone sends payment data to a receiving device (POS), e.g. a cash desk No further specification of the signal transmission

https://www.google.com/patents/US9098865