US 11,863,175 B2
Analog input device, computing system and method for receiving and processing analog input
Chung Wei Lee, Singapore (SG); Thuan Teck Tan, Singapore (SG); Wenliang Yang, Singapore (SG); Alvin Sim, Singapore (SG); and Kok Kiong Low, Singapore (SG)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Appl. No. 17/297,445
Filed by Razer (Asia-Pacific) Pte. Ltd., Singapore (SG)
PCT Filed Oct. 17, 2019, PCT No. PCT/SG2019/050512
§ 371(c)(1), (2) Date May 26, 2021,
PCT Pub. No. WO2020/122812, PCT Pub. Date Jun. 18, 2020.
Claims priority of provisional application 62/779,006, filed on Dec. 13, 2018.
Prior Publication US 2021/0397268 A1, Dec. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H03K 17/969 (2006.01); H01H 13/83 (2006.01); G01L 1/24 (2006.01); G06F 3/02 (2006.01); H01H 13/14 (2006.01)
CPC H03K 17/969 (2013.01) [G01L 1/24 (2013.01); G06F 3/0202 (2013.01); H01H 13/14 (2013.01); H01H 13/83 (2013.01); H01H 2231/002 (2013.01); H01H 2239/022 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An analog input device comprising:
at least one mounting panel;
a matrix of analog push button assemblies mounted to the at least one mounting panel, each analog push button assembly comprising an analog pressure sensor, wherein the analog pressure sensor comprises:
a pressure reception arrangement having an optical sensing sub-arrangement configured to measure an amount of light varied according to a pressure sensed at the pressure reception arrangement and an output terminal for outputting an analog signal corresponding to the amount of light measured, and
a plunger element configured to exert the pressure on the pressure reception arrangement when the analog push button assembly is pressed by a user's finger;
a multiplexer including an input side and an output side, wherein the input side is coupled to the output terminals of the matrix of analog push button assemblies;
an analog-to-digital converter which is coupled to the output side of the multiplexer, wherein the analog-to-digital converter converts the analog signal into a digital-step-value;
a processor which is coupled to the analog-to-digital converter and which is configured to output a data packet including a button identity (ID) of the push button assembly pressed by the user's finger and the digital-step-value converted from the analog signal of the push button assembly by the analog-to-digital converter; and
a communication interface configured to transmit the data packet to a host computing device.