The present disclosure relates generally to a wearable device. More particularly, the present disclosure provides a wearable device adapted to be worn by an entity and enables the entity to control various electronic devices.
BACKGROUND
[0002] With the advancement of technology and production of electronic devices more and more advanced functions are being provided in the electronic devices. Nowadays smart light, smart TV, smart fans are available in the market, these smart devices are controlled with a touch interface or buttons provided on the device itself or through a remote control
[0003] To use these devices, the user has to use remote or go to near the switches or user interface to control various functions, but nowadays with increasing technology, everyone is getting lazy, no one wants to move to turn ON fan, turn off light, and other operations. For instance, there is a requirement of a device to control the television operations such as volume control, play, pause, and many more without moving from the couch/bed, and also controlling smart home activities such as light on/off, intensity control, and color change, etc. However, no devices are available in the market, which can ease the user to control the device without moving from the couch/bed.
[0004] Nowadays, many wearable devices are available in the market to detect health of human e.g., user's body motion, heart rate, time of sleep, quality of sleep, hydration, inflammation, contraction, fatigue, etc. Operations may be selected on the wearable device by voice, motion, orientations, buttons, or touch panel. Also, there are many rings available in market to detect finger motion and recognizing hand gestures. Therefore, in this regard, there is a need to add more functionalities to the existing wearable smart ring by adding buttons and display to receive inputs and perform various actions.
[0005] There is, therefore, a need in the art to provide a wearable device to mitigate the above- mentioned problems, by controlling various electronic device

through the wearable device, that enables the user to control various operations of the electronic device without any remote control or touching the electronic device.
OBJECTS OF THE INVENTION
[0006] A general object of the present disclosure is to provide a wearable
device to control various electronic devices.
[0007] Another object of the present disclosure is to provide a ring shaped
wearable to be worn on a finger.
[0008] Yet another object of the present disclosure is to provide a ring to
control smart electronic devices installed in homes such as smart light, smart TV,
smart fan, and others.
[0009] Yet another object of the present disclosure is to provide a wearable
which is light-weight and compact that enables a user to wear the device all the
time easily.
[0010] Yet another object of the present disclosure is to provide a wearable
device which controls smart electronic device by receiving user's voice input.
[0011] Yet another object of the present disclosure is to provide a wearable
device which controls smart electronic device by receiving user's input from a
touch interface.
SUMMARY
[0012] The present disclosure relates generally to a wearable device. More particularly, the present disclosure provides a wearable device adapted to be worn by an entity and enables the entity to control various electronic devices. [0013] According to an aspect, the present disclosure provides a wearable device to control one or more electronic devices, the ring may include a body portion adapted to be worn by an entity, a display unit may be disposed on the body portion of the ring and includes a touch screen for providing various information, a microphone may be coupled to the body portion, and configured to receive inputs from an entity to control at least one of the connected electronic device, a communication module may be positioned inside the body portions that

facilitates in communicatively coupling the wearable device with the electronic
devices, a set of scrollers may be movably coupled to the body portion to control
various operations on the associated electronic devices by rotating at least one of
the set of scrollers in between a first direction and a second direction, and a
controller may be operatively coupled to the set of scrollers and the display unit,
where the controller may be coupled to a memory, the memory storing
instructions executable by the controller.
[0014] In an aspect, the controller may be configured to receive a user input
for performing at least one operations from the at least one of the set of scrollers
and the microphone, generate and transmit output signals to the associated
electronic device through the communication module, where upon receiving the
output signals the electronic device may actuate and performs the received
operations.
[0015] In an aspect, the display unit may provide information represented
using icon, symbol, label, character and the likes.
[0016] In an aspect, a set of actuators are disposed on the body potion, where
upon applying force on at least one of the set of actuators, the wearable device
may be deactivated and activated.
[0017] In an aspect, a light emitting diode (LED) indicator may be positioned
on the set of actuators, and the LED indicator may be configured to emit one or
more visible lights, and where the color of LED indicator may include red, green,
blue and the likes.
[0018] In an aspect, the set of scrollers may include a set of buttons, where
upon pressing at least one of the set of buttons, the associated electronic device
may perform at least one of the operations.
[0019] In an aspect, the electronic devices may include smart light, smart TV,
smart fan, coffee maker, smart camera, and the likes.
[0020] In an aspect, the plurality of operations may include turning ON and
OFF the associated electronic device, and controlling speed, intensity, color and
the likes.

[0021] In an aspect, a set of separators may be disposed on the wearable device, where the set of separators may include a first separator and a second separator, where the first separator may be positioned on an outer surface of the body portion, and the second separator may be positioned on an inner surface of the body portions.
[0022] In an aspect, the communication module may include any or a combination of Bluetooth, WiFi, radio frequency (RF), infrared (IR), and near-field communication (NFC).
[0023] In an aspect, the device may include a power source operatively coupled to the display unit, the set of scrollers, and the controller, and the power source may facilitate in providing electric power to the ring. [0024] In an aspect, the power source may include any or a combination of battery, electric power line, inverter, capacitor bank, and inductor. [0025] The above and other mentioned objects and advantages of the present invention are described hereunder in greater details with reference to following accompanying non-limiting illustrative drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] It should be noted that the figures are not drawn to scale and that elements of similar structures and functions are generally represented by reference numerals for illustrative purposes throughout the figures. It also should be noted that the figures are only intended to facilitate the description of the preferred embodiments. The figure does not illustrate every aspect of the described embodiments and does not limit the scope of the present disclosure. [0027] FIG. 1A illustrates a perspective view of a wearable device to control electronic devices, in accordance with an embodiment of the present disclosure. [0028] FIG. IB illustrates a horizontal view of a wearable device to control electronic devices, in accordance with an embodiment of the present disclosure. [0029] FIG. 2 illustrates an internal view of a wearable device to control electronic devices, in accordance with an embodiment of the present disclosure.

[0030] FIG. 3 illustrates a block diagram of a wearable device to control electronic devices, in accordance with an embodiment of the present disclosure. [0031] FIG. 4 illustrates an exemplary flow chart of a wearable device to control electronic devices, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE INVENTION
[0032] In the following description, numerous specific details are set forth in
order to provide a thorough understanding of embodiments of the present
invention. It will be apparent to one skilled in the art that embodiments of the
present invention may be practiced without some of these specific details.
[0033] The present disclosure relates generally to a wearable device. More
particularly, the present disclosure provides a wearable device (e.g., ring, band,
etc.) that can be worn by an entity, and can be coupled to one or more electronic
devices. The wearable device can enable the entity to control various electronic
devices e.g., smart light, smart TV, smart fan, coffee maker, smart camera, smart
lock and any combination thereof from the wearable device.
[0034] In an embodiment, the proposed wearable device can include a static
part, which can include a touch screen, which enables the entity to establish
communication with the electronic devices, and also facilitates in selecting
features or operations to be performed on the associated electronic device. The
wearable device can include a microphone also to receive user's input (e.g., turn
ON light, change light color, etc.) and performs the operations accordingly.
[0035] In an embodiment, the wearable device can include a movable part,
that facilitates in performing one or more operations e.g., changing color of light, increasing light intensity, etc. by rotating the movable part. The movable part can be clickable and perform at least one of the operations based upon number of times (e.g., single click, double click, long click) the movable part is clicked by the entity.
[0036] With reference to FIG. 1A, a perspective view of a wearable device 100 is shown in accordance with various embodiments. The wearable device 100

(also referred as device 100, hereinafter) can include a static part and a movable
part. The static part can include a body portion 102 having a display unit 104, and
a set of actuators 110. The movable part can include a set of scrollers 106, which
can be positioned on each side of the body portion 102, and the set of scrollers
106 can be configured to control one or more operations of associated control
devices. The device 100 can vary in size, shape, and compositions.
[0037] In an embodiment, the body portion 102 can be adapted to worn the
device 100 by the entity, the device 100 can be e.g. a ring, a band, etc. The display
unit 104 can be disposed on front surface of the body portion 102 to display one
or more information. The display unit 104 can include, but not limited to light
emitting diode (LED), liquid crystal display (LCD), organic light emitting diode
(OLED), and LED matrix. In an exemplary embodiment, the display unit 104 can
be of any shape e.g., circular, rectangular, square, and the likes.
[0038] In an embodiment, the display unit 104 can provide a user interface to
enable a user to perform variety of operations by selecting at least one of the
operations displayed on the display unit 104. In an exemplary embodiment, the
display unit 104 can be configured to display time, date, photos, and the likes,
when the device 100 is not coupled with any of the electronic device. In another
embodiment, the display unit 104 can display information represented using icon,
symbol, label, character, and the likes.
[0039] In an exemplary embodiment, the display unit 104 can display icons
such as Bluetooth, Wi-fi, and icons related to the connected electronic device,
e.g., bulb, intensity level scale, color chart, color scale, and the likes.
[0040] In an embodiment, the device 100 can include the set of actuators 110
(collectively referred as actuators 110, and individually referred as actuator 110)
disposed on the body portion 102. The actuators 110 can be configured to
activate, deactivate, restart, back the device 100. In another embodiment, the
actuators 110 can be any or a combination of switch, button, relay, knob and the
likes.
[0041] In an embodiment, a light emitting diode (LED) indicator 112
positioned on each of the set of actuators 110, the LED indicator 112 can be

positioned on side circumferential surface of each of the actuator 110. In an exemplary embodiment, the LED indicator 112 can be positioned on a top surface of each of the actuator 110, also position of the LED indicator 112 can vary on the device 100.
[0042] In an embodiment, the LED indicator 112 can be configured to emit one or more visible lights, e.g. red, green, blue, and etc. to indicate different notifications or messages to the entity. For example, red light of the LED indicator 112 can blink when battery is low, green light can blink when at least one of the electronic device is connected with the device 100, and blue light can blink when the device 100 is controlling at least one of the connected electronic device. The color (or combination of colors), lighting sequence, lighting pattern of the LED indicatorl 12 can indicate separate output information to the entity. [0043] With reference to FIG. IB, a horizontal view of a wearable device 100 is shown in accordance with various embodiments. The device 100 can include a display unit 104, which provides user interface, that enables an entity to select one or more information, also assists in selecting an electronic device, which the entity requires to control. A first scroller 106-1 can be disposed on top side of the body portion 102, a second scroller 106-2 can be positioned on bottom side of the body portion 102, and the first scroller 106-1 and the second scroller 106-2 can be moved in between a first direction and a second direction to perform a one or more operations. The one or more operations may include turning ON and OFF the associated electronic device, and controlling speed, intensity of light, color of light, and the likes.
[0044] In an exemplary embodiment, upon connecting any electronic device with the ring through a communication module, such as Bluetooth, WiFi, radio frequency (RF), infrared (IR), near-field communication (NFC), and the likes, the user can perform various operations on the electronic device by rotating any of the scroller 106. In another exemplary embodiment, smart light can be connected with the ring 100, and the user can control intensity of light (e.g., high and low) and color of light (e.g., pink, blue, yellow, white, etc.) by rotating any of the scroller 106.

[0045] In an embodiment, a first actuator 110-1 can be positioned on one side of the display unit 104 and a second actuator 110-2 can be positioned on a second side of the display unit 104, both the actuators 110-1 and 110-2 can facilitate in controlling the device 100, e.g., turning On the device 100, turning off the device 100, move to back screen on user interface 104, and others. In another embodiment, a first light emitting diode (LED) indicator 112-lcan be disposed on the first actuator 110-1, and the second light emitting diode (LED) indicator 112-2can be disposed on the second actuator 110-2. Both the LED 112-1 and 112-2 can be configured to emit one or more visible lights of various colors, for example red, green, blue, and the likes.
[0046] In an exemplary embodiment, the first actuator 110-1 and the second actuator 110-2 can be of any shape, for example circular, rectangular, square, and etc. Also, the first actuator 110-1 and the second actuator 110-2 can be like switch, key, knob, and the likes.
[0047] With reference to FIG. 2, a side view of a wearable device 100 is shown in accordance with various embodiments. The wearable device 100 can include a cavity 202, the cavity enables an entity to wear the device 100 on a body part, for example, the wearable device 100 can be worn in finger like a ring, or can be worn on wrist like a wearable band, thus the cavity 202 can accommodate a finger or wrist of any of the hand. The device 100 can include a display unit 104 positioned on front side of the body portion only, also a first actuator 110-1 and a second actuator 110-2 can be positioned on both side of the display unit 104. In an exemplary embodiment, at least a small part of the display unit 104, the first actuator 110-1, and the second actuator 110-2 can be extracted out from the body portions.
[0048] In an embodiment, the device 100 can include a set of separators 204 disposed on the wearable device 100, and the set of separators 204 can be configured to separate internal components from direct contact to human skin. The set of separators 204 can include a first separator 204-1 and a second separator 204-2, the first separator 204-1 can be positioned on an outer surface of the body portion, and the second separator 204-2 can be positioned on an inner

surface of the body portions. The first separator 204-1 and the second separator 204-2 can be made of Aluminum, and the likes.
[0049] In an exemplary embodiment, the ring 100 can include electronic circuitry which can harm human skin, and to avoid this first separator 204-1 can be positioned on front surface of the device 100, when the user wear the ring 100, the first separator 204-1 is outside, which facilitates in reducing the impact of electronic circuitry on the human skin. Similarly, the second separator 204-2 can be positioned on back surface of the device 100, when the user wear the ring 100, the second separator 204-2 is towards finger, which facilitates in reducing the impact of electronic circuitry on the human skin.
[0050] With reference to FIG. 3, a block diagram of device is shown in accordance with various embodiments. The device 100 can include a display unit 104, database 306, a controller 308, a set of actuators 110, a communication module 310, and a power source 312, where the display unit 104, the database 306, the set of actuators 110, and the communication module 310 can be operatively coupled with the controller 308. The controller 308 can be any or a combination of microprocessor, microcontroller, Arduino Uno, At mega 328, Raspberry Pi or other similar processing unit, and the likes. In another embodiment, the controller 308 can include one or more processors coupled with a memory, the memory storing instructions executable by the one or more processors. In an embodiment, the database 306 can include data that is either stored or generated as a result of functionalities implemented by any of the components of the controller 308.
[0051] In an embodiment, the device 100 can be communicatively coupled with one or more electronic devices such as smart light, smart TV, smart fan, coffee maker, smart camera, smart lock, and the likes through the communication module 310. The communication module 310 can include, but not limited to Bluetooth, WiFi, radio frequency (RF), infrared (IR), and near-field communication (NFC).
[0052] In an embodiment, the display unit 104 can include any or a combination of light emitting diode (LED), liquid crystal display (LCD), organic

light emitting diode (OLED), and LED matrix. In another embodiment, an entity can apply force on at least one of the set of actuators 110 to turn on the device 100, when the device is turned on the display unit 104 can be actuated also to display time, date, photos, and the likes. Also, icon of the available electronic devices can be displayed on the display unit 104, the entity can select the icon of the electronic device which is required to be controlled by the device 100, and the associated electronic device can be connected with the device 100 through the communication module 310. Further, the display unit 104 can display various information represented using icon, symbol, label, character, and the likes, that enables the entity to select and control the electronic device. [0053] In an exemplary embodiment, when the user needs to control smart lights of the home, the user can turn on the device by actuating the actuator 110, upon actuation the device 100 can search for nearby electronic devices to connect the electronic devices with the device 100. Smart lights coupled in the home can be communicatively coupled with the ring via Bluetooth, and icons of color, intensity of light, and the likes can be displayed on the display unit 104. [0054] In an embodiment, when the entity selects at least one of the one or more operations from the display unit 104, the selected operation can be controlled from the set of scrollers 106 and the microphone 304. In another embodiment, when the entity speaks in proximity of the device 100, the microphone 304 can receive commands and generate a first set of signals accordingly. The generated first set of signals can be transmitted to the controller 308 in an electric form, where upon receiving the first set of signals, the controller 308 can convert the first set of signals into machine readable form or binary form. The converted first set of signals can be analyzed and accordingly output signals can be generated and transmitted to the connected electronic devices to control the selected operation.
[0055] In an exemplary embodiment, the controller 308 can use machine learning techniques e.g., deep learning based classifiers, KNN classifiers, MLP neural networks and the likes to analyse the voice signals provided by the user through the microphone 304. In another exemplary embodiment, a deep leaning

model can be trained based on the received words from the voice signals, where the deep leaning model can be stored in the database 310. In yet another embodiment, once the dataset is trained correctly, a deep learning algorithm can be configured to perform repetitive, and routine tasks within a shorter period of time.
[0056] In an exemplary embodiment, when the user speaks in the microphone 304 of the device 100 such as "Turn on the light", "Dim the light", the controller 308 can control the smart light accordingly. In another exemplary embodiment, when the user connect a smart light from the device 100, and choose intensity control of light from the display unit 104, the device 100 can enable the user to control the device by rotating a first scroller 106-1. Upon rotating the first scroller 106-1 in upward direction, the device 100 can facilitate in increasing the light intensity, and upon rotating the first scroller 106-2 in downward direction, the device 100 can facilitate in increasing the light intensity.
[0057] In an embodiment, the set of scrollers 106 can include a first scroller 106-1 and a second scroller 106-2, both the scrollers can be operatively coupled with the controller 308. The first scroller 106-1 and the second scroller 106-2 can be operatively coupled to perform at least one of operations. For example, the first scroller 106-1 can be used to change the color of smart light, and the second scroller 106-2 can be used to control the intensity of the light. [0058] In an embodiment, a set of buttons 302 can be positioned on each of the scrollers 103, and upon pressing at least one of the set of buttons 302, the associated electronic device can perform at least one of the operations. The set of buttons 302 can include a first button 302-1 and a second button 302-2 on each of the scroller 106 that can enable an entity to choose or click to perform a operations. In an exemplary embodiment, each scroller 106 can be like a small mouse having a scroller with left and right buttons, which enable a user to operate single click, long click and double click using buttons. In another exemplary embodiment, the user can select an icon on the display unit 104 using button 302, and upon clicking on the icon the internal features of the icon can be displayed, such as a smart light of a specific room can be chosen by clicking once on the

icon, and consequently the one or more features such as color of light and intensity can be controlled by clicking on the icons different number of times. [0059] In an exemplary embodiment, upon clicking once on a smart fan icon of a bedroom, the fan speed can be low, and upon clicking twice on same icon, the fan speed can be high. Both the scrollers can be utilized for advanced multimedia operations, for example, while controlling smart TV from the ring 100, the first scroller 106-1 can increase the volume when moved in upward direction and decrease the volume when moved in downward direction, and the second scroller 106-2 can be for utilized to fast-forward the videos when moved in upward direction, and can be utilized to reverse the video by rotating the second scroller 106-2 in downward directions. Also, the buttons 302 provided on the scrollers 106 can be used to play videos, pause videos, and other operations. [0060] In an embodiment, the device 100 can include a first light emitting diode (LED) indicator 112-1 positioned on a first actuator 110-1, and a second light emitting diode (LED) indicator 112-2 positioned on a second actuator 110-2. The color of the first light emitting diode (LED) indicator 112-1 and the second light emitting diode (LED) indicator 112-2 can be changed based on condition, for example, when the device 100 is connected with the electronic device the color can be green, and when the battery is low, the color can be red. In an exemplary embodiment, each of the light indicators 112 can blink to notify the user regarding current status of the device 100, such as when the color is red, the user can recharge the battery.
[0061] In an embodiment, the device 100 can include a power source 312 operatively coupled to the controller 308, the display unit 104, the LED indicators 112, where the power source facilitates in providing electric power to the device 100. In another embodiment, the power source can include any or a combination of cell, battery, electric power line, inverter, capacitor bank, inductor, and the likes.
[0062] In an exemplary embodiment, the device 100 can include a USB port to couple the device 100 with a power source to charge the device 100.

[0063] With reference to FIG. 4, an exemplary flow chart of a wearable device 100 is shown in accordance with various embodiments. The device 100 can be turned ON by actuating at least one of the set of actuators 110, if button is not pressed the device 100 can not operate, and upon actuation, the power supply can be provided to the device 100, which can activate a display unit 104 and a communication module 310, and the device 100 can search electronic devices within a pre-determined range through the communication module 310. When the electronic device is found, an icon can be displayed on the display unit 104, and if no device is found, the actuator 110 can be pressed again. Upon selection of the electronic device from the display unit 104, the electronic device can be connected with device 100, and all the functions of the electronic devices can be displayed on the display unit 104 of the device 100, also key functions of the connected electronic devices can be assigned to the device 100 by selecting from the display unit 104, and the entity can control one or more operations by rotating the set of scrollers in between a first direction and a second direction. The electronic device can be disconnected from the device 100 when not in use or when the user required to control another electronic device.
[0064] In an embodiment, the entity can connect any electronic device available in a pre-defined area from the device 100, and the connected electronic devices can be controlled without touching phone and smart electronic devices e.g., smart TV, fan sped, light intensity, coffee maker, and the likes from any place within the pre-defined area.
[0065] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined within formation and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[0066] The present disclosure provides a wearable device to control various
electronic devices.
[0067] The present disclosure provides a ring shaped wearable to be worn on
a finger.
[0068] The present disclosure provides a ring to control smart electronic
devices installed in homes such as smart light, smart TV, smart fan, and others.
[0069] The present disclosure provides a wearable which is light-weight and
compact that enables a user to wear the device all the time easily.
[0070] The present disclosure provides a wearable device which can control
smart electronic device by receiving user's voice input.
[0071] The present disclosure provides a wearable device which can control
smart electronic device by receiving user's input from a touch interface.

We Claim:

1. A wearable device 100 to control a plurality of electronic devices, said wearable device comprising:
a body portion 102 adapted to be worn by an entity; a display unit 104 disposed on the body portion of said wearable device, the display unit comprises a touch screen for providing a plurality of information;
a microphone 304 coupled to the body portion, and configured to receive inputs from an entity to control at least one of the connected electronic device;
a communication module 310 positioned inside the body portions 102 that facilitates in communicatively coupling the wearable device 100 with one or more electronic devices;
a set of scrollers 106 movable coupled to the body portion 102, the set of scrollers 106 configured to control a plurality of operations of the associated electronic devices by rotating at least one of the set of scrollers 106 in between a first direction and a second direction; and
a controller 308 operatively coupled to said set of scrollers 106 and said display unit 104, wherein the controller 308 coupled to a memory, said memory storing instructions executable by said controller to:
receive a user input for performing at least one of the plurality of operations from the at least one of the set of scrollers 106 and the microphone 304;
generate and transmit output signals to the associated electronic device through the communication module 310, wherein upon receiving the output signals the electronic device actuates and performs the received operation.

2. The wearable device 100 as claimed in claim 1, wherein the display unit 104 provides the plurality of information represented using icon, symbol, label, character and combination thereof.
3. The wearable device 100 as claimed in claim 1, wherein a set of actuators 110 are disposed on the body potion, wherein upon applying force on at least one of the set of actuators 100, the wearable device 100 is deactivated and activated.
4. The wearable device 100 as claimed in claim 3, wherein a light emitting diode (LED) indicator 112 positioned on the set of actuators 110, wherein the LED indicator 112 is configured to emit one or more visible lights, and wherein the color of LED indicator 112 comprises red, green, blue and combination thereof.
5. The wearable device 100 as claimed in claim 1, wherein the set of scrollers 106 comprises a set of buttons 302, wherein upon pressing at least one of the set of buttons 302, the associated electronic device performs at least one of the plurality of operations.
6. The wearable device 100 as claimed in claim 1, wherein the plurality of electronic devices comprises smart light, smart TV, smart fan, coffee maker, smart camera, and any combination thereof.
7. The wearable device 100 as claimed in claim 1, wherein the plurality of operations comprises turning ON and OFF the associated electronic device, and controlling speed, intensity, color and any combination thereof.
8. The wearable device 100 as claimed in claim 1, a set of separators 204 disposed on the wearable device 100, wherein the set of separators include a first separator and a second separator, wherein the first separator is positioned on an outer surface of the body portion, and the second separator is positioned on an inner surface of the body portions.
9. The wearable device 100 as claimed in claim 1, wherein the communication module comprises any or a combination of Bluetooth, WiFi, radio frequency (RF), infrared (TR), and near-field communication (NFC).

10. The wearable device 100 as claimed in claim 1, wherein the device 100 comprises a power source operatively coupled to the display unit, the set of scrollers, and the controller, wherein the power source facilitates in providing electric power to the wearable device 100, and wherein the power source includes any or a combination of battery, electric power line, inverter, capacitor bank, and inductor.