Analog input device, computing system and method for receiving and processing analog input

Patent metadata

Field	Value
Publication number	US-12294362-B2
Application number	US-202318379514-A
Country	US
Kind code	B2
Filing date	Oct 12, 2023
Priority date	Dec 13, 2018
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

An analog input device including at least one mounting panel and a matrix of analog push button assemblies mounted thereon. Each analog push button assembly including an analog pressure sensor including 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. The analog input device may include a multiplexer including an input side coupled to the push button assemblies and an output side; an analog-to-digital converter coupled to the output side of the multiplexer; a processor coupled to the analog-to-digital converter and configured to output a data packet; and a communication interface configured to transmit the data packet to a host computing device.

First claim

The invention claimed is:

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, wherein each analog push button assembly outputs an analog signal as a measure of an amount of depression of said analog push button assembly when pressed by a user's finger;
a multiplexer including an input side and an output side, wherein the input side is coupled to 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 from a corresponding push button assembly pressed by the user's finger into a digital-step-value; and
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 corresponding push button assembly pressed by the user's finger and the digital-step-value converted from the analog signal of the corresponding push button assembly by the analog-to-digital converter, the data packet being for transmitting to a host computing device.

2. The input device as claimed in claim 1 , further comprising a communication interface configured to transmit the data packet to the host computing device.

3. The input device as claimed in claim 1 , wherein each of the matrix of analog push button assemblies comprises 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, and
a plunger element configured to exert the pressure on the pressure reception arrangement, wherein when the analog push button assembly is pressed by the user's finger the amount of depression of the analog push button assembly causes the plunger element of the analog push button assembly to correspondingly exert the pressure on the pressure reception arrangement of the analog push button assembly to vary the amount of light to be detected by the optical sensing sub-arrangement so as to generate the analog signal corresponding to the amount of depression of the analog push button assembly.

4. The input device as claimed in claim 3 , further comprising an analog filter coupled in an electrical connection between the pressure sensor and the analog-to-digital converter.

5. The input device as claimed in claim 1 , further comprising a lighting arrangement including at least one light source controlled by the processor.

6. The input device as claimed in claim 1 , wherein the analog signal is an analog voltage.

7. The input device as claimed in claim 3 , wherein the pressure reception arrangement comprises a biasing element which is arranged between the plunger element and the at least one mounting panel and which bias the plunger element away from the at least one mounting panel in a biasing direction.

8. The input device as claimed in claim 7 , wherein the optical sensing sub-arrangement comprises:
a light emitter which is disposed at an intermediate level between the plunger element and the at least one mounting panel and which is oriented to emit light along a light path perpendicular to the biasing direction of the biasing element;
a light sensor which is disposed in the light path and which is configured to generate the analog signal based on the amount of light sensed by the light sensor for outputting via the output terminal; and
a light blocking element which is associated with the plunger element in a manner so as to be movable together with the plunger element along a movement direction parallel to the biasing direction and which is extending towards the mounting panel to intersect the light path between the light emitter and the light sensor, wherein the light blocking element comprises a cut-out profile which varies the amount of light passing through the light blocking element as the light blocking element moves transversely across the light path when the plunger element is moved towards the at least one mounting panel.

9. A computing system for receiving and processing analog input, the computing system comprising:
a host processor; and
an input device comprising:
at least one mounting panel;
a matrix of analog push button assemblies mounted to the at least one mounting panel, wherein each analog push button assembly outputs an analog signal as a measure of an amount of depression of said analog push button assembly when pressed by a user's finger;
a multiplexer including an input side and an output side, wherein the input side is coupled to 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 from a corresponding push button assembly pressed by the user's finger 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 corresponding push button assembly pressed by the user's finger and the digital-step-value converted from the analog signal of the corresponding push button assembly by the analog-to-digital converter, the data packet being for transmitting to a host computing device; and
a communication interface configured to transmit the data packet to the host computing device,
wherein the input device is connected to the host processor via the communication interface,
wherein the host processor is configured to receive the data packet from the input device, to determine an amount of depression of the corresponding push button assembly based on the digital-step-value of the data packet, and to generate a corresponding predetermined application event in an application based on the determined amount of depression of the corresponding push button assembly and an input setting for the application.

10. The computing system as claimed in claim 9 , wherein the host processor is further configured to transform the determined amount of depression of the corresponding push button assembly onto a non-linear scale prior to generating the corresponding predetermined application event.

11. The computing system as claimed in claim 10 , wherein the corresponding predetermined application event comprises a continuous variable action, and wherein the host processor is configured to generate a state of the continuous variable action according to the determined amount of depression of the corresponding push button assembly.

12. The computing system as claimed in claim 9 , wherein the corresponding predetermined application event comprises a discrete action, and wherein the host processor is configured to generate the discrete action when the determined amount of depression of the corresponding push button assembly is equal to or greater than a pre-set depression level of the corresponding push button assembly.

13. The computing system as claimed in claim 9 , wherein the corresponding predetermined application event comprises a first discrete action and a second discrete action, and wherein the host processor is configured to generate the first discrete action when the determined amount of depression of the corresponding push button assembly is equal to a first pre-set depression level of the corresponding push button assembly or between the first pre-set depression level of the corresponding push button assembly and a second pre-set depression level o

Assignees

• Razer Asia Pacific Pte Ltd

Inventors

• Lee Chung Wei
• Tan Thuan Teck
• Yang Wenliang
• Sim Alvin
• Low Kok Kiong

Classifications

• H01H2239/022

  with opto-electronic switch · CPC title

• H01H2231/002

  Calculator, computer · CPC title

• G06F3/0362

  with detection of one-dimensional [1D] translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts · CPC title

• G06F3/038

  Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry · CPC title

• H01H13/83

  characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements · CPC title