US 12,261,567 B2
Demodulation signal generator for air pulse generator
Jemm Yue Liang, Sunnyvale, CA (US); Jing-Meng Liu, San Jose, CA (US); and Jye Ren, Taipei (TW)
Assigned to xMEMS Labs, Inc., Santa Clara, CA (US)
Filed by xMEMS Labs, Inc., Santa Clara, CA (US)
Filed on Dec. 26, 2023, as Appl. No. 18/396,678.
Application 18/396,678 is a continuation in part of application No. 18/321,757, filed on May 22, 2023, granted, now 12,075,213.
Application 18/321,757 is a continuation in part of application No. 17/553,806, filed on Dec. 17, 2021, granted, now 11,758,335, issued on Sep. 12, 2023.
Claims priority of provisional application 63/459,170, filed on Apr. 13, 2023.
Claims priority of provisional application 63/447,758, filed on Feb. 23, 2023.
Claims priority of provisional application 63/447,835, filed on Feb. 23, 2023.
Claims priority of provisional application 63/437,371, filed on Jan. 6, 2023.
Claims priority of provisional application 63/436,103, filed on Dec. 29, 2022.
Claims priority of provisional application 63/435,275, filed on Dec. 25, 2022.
Claims priority of provisional application 63/434,474, filed on Dec. 22, 2022.
Claims priority of provisional application 63/433,740, filed on Dec. 19, 2022.
Claims priority of provisional application 63/428,085, filed on Nov. 27, 2022.
Claims priority of provisional application 63/354,433, filed on Jun. 22, 2022.
Claims priority of provisional application 63/353,610, filed on Jun. 19, 2022.
Claims priority of provisional application 63/353,588, filed on Jun. 18, 2022.
Claims priority of provisional application 63/347,013, filed on May 30, 2022.
Claims priority of provisional application 63/346,848, filed on May 28, 2022.
Claims priority of provisional application 63/171,281, filed on Apr. 6, 2021.
Claims priority of provisional application 63/143,510, filed on Jan. 29, 2021.
Claims priority of provisional application 63/142,627, filed on Jan. 28, 2021.
Claims priority of provisional application 63/139,188, filed on Jan. 19, 2021.
Claims priority of provisional application 63/138,449, filed on Jan. 17, 2021.
Claims priority of provisional application 63/137,479, filed on Jan. 14, 2021.
Prior Publication US 2024/0128928 A1, Apr. 18, 2024
Int. Cl. H03B 5/12 (2006.01); H03B 5/30 (2006.01)
CPC H03B 5/1243 (2013.01) [H03B 5/1206 (2013.01); H03B 5/30 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A demodulation signal generator, coupled to an air-pulse generator, the demodulation signal generator comprising:
a first node coupled to a first flap and a second node coupled to a second flap; and
a resonance circuit, coupled to the first and second nodes, configured to produce a first demodulation signal on the first node and a second demodulation signal on the second node;
wherein the air-pulse generator comprises a film structure, the film structure comprises a flap pair, the flap pair comprises the first flap and the second flap;
wherein the resonance circuit and the flap pair co-perform a resonance operation, such that the first demodulation signal and the second demodulation signal are generated via the co-performed resonance operation;
wherein the first and the second demodulation signals have opposite polarity;
wherein the first flap receives the first demodulation signal and the second flap receives the second demodulation signal, such that the flap pair performs a differential movement;
wherein the differential movement is configured to form a virtual valve or an opening to perform a demodulation operation on a modulated air pressure variation generated by the film structure;
wherein the virtual valve is closed corresponding to a period within a first transition time of the first demodulation signal and a second transition time of the second demodulation signal.