228 results about "Feedback effect" patented technology

Method and apparatus for providing high strength, low frequency tactile sensations using an inertial actuator in a haptic feedback interface device, such as an actuator driving an oscillating inertial mass. A commanded low frequency is modulated or combined with a higher frequency at which the tactile sensations feel stronger, where the resulting signal is used to output a tactile sensation at the higher frequency and convey the commanded low frequency to the user. One embodiment provides higher frequency pulse bursts at the desired low frequency wherein the higher frequency pulse bursts are at or near a resonant frequency of the actuator; other embodiments modulate or otherwise vary the amplitude of the higher frequency signal according to the desired low frequency.

A user terminal apparatus including: a display configured to have flexibility and display a user interface (UI) screen; a feedback provider which locally provides a feedback effect in at least one area of the display; and a controller configured to control the feedback provider to locally provide the feedback effect to the at least one area of the display, among all areas of the display in response to determining that the user intends to provide an input on the UI screen.

An array-type tactile feedback touch panel includes a touch unit, a central processing unit (CPU), a vibration unit, and a display unit. The vibration unit has a plurality of thin vibrators. When the display unit displays a touch frame and a touch body performs a touch motion on the touch unit, the touch unit records a motion track during the touch motion and transmits the motion track to the CPU. Then, the vibration unit receives the motion track, and drives the vibrators under corresponding positions of the motion track to generate vibrations. Therefore, during the touch motion, a partial tactile feedback is generated at touch points of the touch body, and the tactile feedback effect is generated sequentially according to the motion track of the touch body.

Embodiments of the invention relate to a hierarchical method for generating force feedback effects. In one embodiment, a method comprises receiving a first force contribution associated with a first (e.g., previous) position of a manipulandum; determining a second force contribution associated with a second (e.g., current) position of the manipulandum; and outputting a force signal to an actuator coupled to the manipulandum, such that the actuator renders a feedback force having a sum of the first and second force contributions. The method may further include classifying force effects according to a predetermined “hierarchy” (or “priority”) scheme, whereby the second force contribution is related to “high” priority force effects associated with the second position, and the first force contribution is related to “low” priority force effects associated with the first position. As such, computation delay in outputting force feedback effects can be substantially reduced, thereby enhancing the stability and performance of the underlying force feedback system.

A hearing aid having two physically separate receivers, one for outputting low frequency (LF) acoustic sounds and another for outputting high frequency (HF) acoustic sounds. The LF receiver's output port is connected to a tube in which the HF receiver is inserted. The LF acoustic sounds either flow around the HF receiver, which include standoffs to space the HF receiver away from the inner tube wall, or through a channel in the HF receiver. At the output of the HF receiver, the LF and HF acoustic sounds are combined to form an acoustic signal that is transmitted to the ear canal. The LF receiver can be optimized for compliance, distortion, resonance frequency, and output. Its orientation is selected for reducing the overall size of the hearing aid. The HF receiver is smaller and placed far away from any microphone(s), reducing feedback effects, and may have a cylindrical or rectangular shape.

A haptic device includes a substantially transparent composite piezoelectric cell configured to measure a deformation of a surface of the cell and to provide a haptic feedback effect as a result of the deformation.

A low-cost method and system for processing force feedback effects generated at a host for playback at a physical interaction device by moving much of the force feedback effect processing from the device back to the host, and performing this in a manner that does not adversely affect latency effects or the load on the host processor. This is achieved by a novel combination of software and hardware techniques. In particular, the device hardware uses a low-cost microcontroller with limited processing capabilities, minimal memory and a low speed USB interface. The small memory also alleviates the need for buffer assignments and memory management. On the other hand, the device driver software residing on the host computer relies on the host's powerful processor to perform the majority of the effect management and computation, as well as translating all the complex high-level effect commands to a unique, small and simplified set of low-level commands which are periodically updated and transferred to the device for playback.

The invention discloses a chronic disease health management system and method. The system comprises a health monitoring and acquisition apparatus, an information acquisition and processing module, a management module, a terminal device and a real-time tracking and monitoring module, wherein the health monitoring and acquisition apparatus acquires health information of a chronic disease patient and generates health data; the information acquisition and processing module processes, analyzes and assesses the acquired health data and generates analysis and assessment result data of the chronic disease patient; a management scheme is generated through the management module and sent to the terminal device so as to perform intervention management on the chronic disease patient; and the real-time tracking and monitoring module tracks and monitors the health information of the chronic disease patient in real time, evaluates an intervention management feedback effect and continuously adjusts and perfects the management scheme. According to the system and method, effective management can be carried out for dangerous factors of chronic disease crowds and professionalized and personalized 8S health management schemes can be provided for chronic disease patients.

The present invention provides haptic sensations for a haptic feedback device and especially for a rotational device such as a knob. Force effects such as a hill force effect and barrier force effect allow easier selection of menu items, menus, values, or other options by the user. Force models are also described to allow greater selection functionality, such as a scrolling list with detents and rate control borders, a jog shuttle, a push-turn model, a double-push model, and a cast control model.

A haptic input device comprises a hexapod or pentapod parallel linkage mechanism with force feedback effected by proportional control of magneto-restrictive fluid brakes constraining the measurement of the struts of the mechanism, through their base nodes. In the pentapod version of the haptic data input device, a haptic stylus is employed which includes an annular compliant feature that can be squeezed and whose squeeze pressure can be monitored.

Systems and methods for providing haptic feedback in a home automation monitoring system are provided. A method for providing haptic feedback in a home automation system includes receiving an electronic command by a home automation controller, from a haptic feedback remote control device. The home automation controller determines whether the electronic command is associated with a user interface control condition stored in a haptic effects database. If so, the home automation controller accesses the haptic effects database to identify a first haptic feedback effect associated with the determined user interface control condition, and transmits a first haptic feedback command indicating the first haptic feedback effect to the haptic feedback remote control device. A haptic feedback element in the haptic feedback remote control device is then activated to provide the first haptic feedback effect to a user of the haptic feedback remote control device.

Method and apparatus for providing tactile sensations. For one embodiment a first frequency at which to output a tactile sensation is received. A second frequency higher than the first frequency is determined. The second frequency is based on a frequency at which an inertial actuator outputs a second tactile sensation. A waveform having the first frequency and a waveform having the second frequency is combined to produce a signal configured to cause a composite tactile sensation at the second frequency, the composite tactile sensation conveying the first frequency.

A sensing arrangement for sensing charged particles and / or quanta of elektromagnetic radiation has a sensor device (12) and amplifier circuitry (14). The sensor device (12) provides a sensor signal to an imput mode (vin) of the amplifier (14) to cause the level at the amplifier output mode (vout) to change. A negative feetback device (T1) responds to the change in level of the output node (Vour) to vary the feedback effect to increase the loop again of said amplifier circuitry (14). A current mirror (T2,T3) resets the input node (vin) to its initil level. Single particle and integrating sensor arrangements are disclosed.

A sensing arrangement for sensing charged particles and / or quanta of electromagnetic radiation has a sensor device (12) and amplifier circuitry (14). The sensor device (12) provides a sensor signal to an imput mode (vin) of the amplifier (14) to cause the level at the amplifier output mode (vout) to change. A negative feetback device (T1) responds to the change in level of the output node (Vour) to vary the feedback effect to increase the loop again of said amplifier circuitry (14). A current mirror (T2,T3) resets the input node (vin) to its initial level. Single particle and integrating sensor arrangements are disclosed.

The invention discloses a virtual object steering control method and device. The method comprises the steps that a display area of a touch-control device is controlled to display an operation interface, and the operation interface at least comprises a steering control area; a touch-control event of the steering control area is detected periodically, and pressing force of pressing operation in the touch-control event is obtained; steering parameters of a virtual object are determined according to the pressing force of the pressing operation; the virtual object is controlled to conduct steering according to the determined steering parameters. According to the virtual object steering control method and device, changes of steering angles or steering angular speed are adjusted according to changes of the pressing force, and therefore the actual process that virtual object steering is adjusted according to pressing operation is simulated, and a more actual feedback effect is obtained by a user.

The invention discloses a mental and psychological assessment method based on VR interaction and brain wave and cerebral blood flow monitoring, and relates to the field of medical treatment. The method comprises three parts of a user specific emotion elicitation link based on virtual-real interaction technology, a user psychological data analysis link based on brain wave and cerebral blood flow data real-time monitoring, and a user mental and psychological assessment link. According to the method, according to the doctor or user needs and on the premise of ensuring safety, a virtual-real module is used for providing virtual-real contents of different forms for the user to elicit the specific emotion fluctuation of the user, and brain wave, cerebral blood flow and other psychological data of the user is subjected to comparative analysis with the expected data, so that the feedback effect of the user observing the virtual-real contents is analyzed and obtained, and the mental and psychological assessment of the user is performed by combining with the feedback effect of the user observing a series of virtual-real contents with specific emotion elicitation effects.

The invention relates to a hearing aid system comprising first and second spatially separated hearing instruments, the system being adapted for processing input sounds to output sounds according to a user's needs. The invention further relates to a method and use. The object of the present invention is to provide an alternative scheme for reducing the effect of acoustic feedback in a hearing aid system. The problem is solved in that the hearing instruments comprises, respectively, first and second input transducers for converting a first input sound to first and second electric input signal, and first and second output transducers for converting first and second processed electric output signal to first and second output sounds, wherein the system is adapted to provide that a first Tx-signal originating from the first electric input signal of the first hearing instrument is transmitted to the second hearing instrument and used in the formation of the second processed electric output signal, and that a second Tx-signal originating from the second electric input signal of the second hearing instrument is transmitted to the first hearing instrument and used in the formation of the first processed electric output signal. This has the advantage of providing a scheme for reducing or effectively eliminating acoustic feedback in a pair of hearing instruments. The invention may e.g. be used in listening devices, e.g. hearing aids, head sets, or active ear plugs.

The invention discloses a nonlinear dynamics calculation method for a gear pair. The method comprises the steps that the feedback effect of vibration displacement to the dynamic contact condition of agear surface of the gear pair in the actual running process is considered, and the nonlinear excitation of the dynamic meshing rigidity and dynamic comprehensive meshing errors is calculated. Dynamiccontact analysis of the gear pair and a system dynamics solution process are combined, and an excitation-response-feedback loop-locked calculation process of the system is achieved. According to themethod, the nonlinear dynamics phenomenon of the gear pair due to parameters such as gear surface errors and shape correction can be acquired, the dynamics behavior of the system in the dynamic contract process can be more truly simulated, and the calculation accuracy of dynamics is improved.

The invention provides a shifting register unit and a drive method thereof, a gate drive circuit and a display device. The shifting register unit comprises an input module, a reset module, a pull-down node control module, a memory module, a gate drive signal output module and a pull-up node potential maintenance module, wherein the pull-up node potential maintenance module is connected with a gate drive signal output end and a pull-up node separately and is used for maintaining the potential of the pull-up node at a high level when the gate drive signal output end outputs the high level. Through the feedback effect of a gate drive signal, the potential of the pull-up node in the shifting register unit is controlled and compensated, thereby achieving stable output of the gate drive signal and ensuring normal display.

The invention discloses a force feedback button device which comprises a base part and a pressing part, wherein the pressing part is arranged above the base part and can operate between the places far away from the base part and close to the base part; the device further comprises a magnetic piece, an electrifying coil, a sensing mechanism and a control unit, wherein two magnetic poles of the magnetic piece face towards the pressing part and the base part respectively; the electrifying coil is provided with a columnar through space into which the magnetic piece is put; the two axial ends of the electrifying coil face towards the pressing part and the base part respectively; one of the magnetic piece and the electrifying coil is linked with the pressing part, and the other one is fixedly arranged with the base part; the sensing mechanism is used for detecting whether the pressing part moves to the place close to the base part and generating corresponding indication signals; the control unit is used for reading the indication signals of the sensing mechanism; when the indication signals represent that the pressing part moves to the place close to the base part, the electrifying coil is powered on through current so as to generate a magnetic field, thereby resulting in the force feedback which is ultimately transmitted to the pressing part. According to the device, the simulation of paragraph feeling is achieved in a non-contact or flexible contact mode, the service life of the button device is prolonged, and the force feedback effect is adjustable, so that the button device is applicable to click devices with physical buttons such as a mouse.

The invention, which belongs to the radio frequency integrated circuit design technology field, more particularly relates to a Gilbert cell mixer with automatic optimal bias and harmonic wave control. The mixer comprises a basic Gilbert frequency mixing unit, an optimal bias circuit and a harmonic wave control circuit. The Gilbert frequency mixing unit consists of a transconductance level, a switch level, and a load level. The optimal bias circuit includes duplication or reduction with a same proportion of a transconductance-level device of the Gilbert frequency mixing unit, a resistor chain, and operational amplifiers, wherein weak currents flow through the resistor chain and the operational amplifiers form two feedback loops. A middle point of the resistor chain in the optimal bias circuit provides a direct current bias for a transconductance tube in the Gilbert frequency mixing unit. And the harmonic wave control circuit is composed of an adjustable active inductance and a harmonic wave control capacitor; and the harmonic wave control circuit is connected to a drain terminal of the transconductance tube of the Gilbert frequency mixing unit. According to the invention, accuracy of a generated optimal bias is optimized; and a secondary harmonic wave feedback effect is overcome. Besides, the Gilbert cell mixer with automatic optimal bias and harmonic wave control is suitable for application to a wireless communication transceiver circuit needing an active mixer with high linearity.

The invention provides a live broadcast interaction processing method and device, electronic equipment and a storage medium. The method comprises the following steps: presenting live broadcast contentin a playing page of a client; when an interactive object appears in the live broadcast content presented by the playing page, loading an interactive entry in the playing page; in response to a touchoperation corresponding to the interaction entrance, loading a floating layer in the client, and presenting a material for guiding interaction with an interaction object in the floating layer; and inresponse to a touch operation corresponding to the material, presenting a feedback effect corresponding to the material in the floating layer. According to the invention, flexible and diversified interaction can be realized in live broadcast.

The invention is suitable for the technical field of computers, provides an emotion classification method and system. The emotion classification method includes: performing recursion upward from a leaf node layer-by-layer in a phrase binary tree, and calculating a vector of each node, wherein the vector of each node is a phrase level-based vector; determining an emotion label of each node by calculating the similarity between a reference word and the vector, wherein the reference word is an emotion word with strong positive / negative, and the emotion label is an emotion tendency value; performing recursion downward from a root node layer-by-layer, and calculating a feedback vector of each node, wherein the feedback vector of each node is phrase level-based vector; and performing emotion classification through a classifier function according to the vector, the feedback vector and the emotion label of each node. The phrase binary tree is constructed, phrase level operation is performed, the emotion label of each node is acquired, and then classification is performed according to the vector, the feedback vector and the emotion label of each vector, full text information can be captured through two-way communication, and the accuracy of classification can be improved.

The invention relates to a single-tube semiconductor laser combining structure, comprising multiple single-tube semiconductor lasers with the same wavelength and multiple stepped heat sinks, wherein the multiple stepped heat sinks are in arc-shaped arrangement in the same plane, and multiple lasers fixedly arranged on each stepped heat sink can emit a column of combined light beams in the same direction; multiple columns of combined light beams are incident on a diffraction grating via different dip angles and superpose on the diffraction grating, under the beam split effect of the diffraction grating and the feedback effect of an external cavity mirror, the light beam emitted by each laser realizes external cavity feedback and wavelength locking in a resonant cavity constituted by the rear cavity surface of the laser and the external cavity mirror, the multiple paths of light beams are combined into one beam by the diffraction grating, so that the external cavity combination is realized, and the light beam is finally coupled in a multimode fiber. According to the single-tube semiconductor laser combining structure, the limitation on the number of combining units of conventional spatial combination and polarization combination is broken through, the number of the combining units is remarkably increased, after the combined beam is coupled in the multimode fiber, the output power is greatly higher than the output power of a fiber coupling module manufactured by the spatial combination and polarization combination technology.

The invention discloses an ammonia spraying amount control method and system for a selective catalytic reduction (SCR) flue gas denitration system. A hearth combustion NOx data model and a SCR reaction mechanism are combined, an ammonia spraying amount calculation model is established, model parameters are identified by operation data and the model parameters are adjusted timely, ammonia sprayingfeedforward amount is calculated through the and a control system is introduced, so that the ammonia spraying amount control quality is improved, and the adjusted instantaneity and accuracy of the ammonia spraying amount is guaranteed. When a continuous emission monitoring system (CEMS) is demarcated or purged, feedforward control weight is adjusted by a feedforward coefficient, meanwhile, the feedback effect is weakened, and thus the influence of the working condition change of the CEMS on the ammonia spraying amount control is avoided.

Haptic feedback remote control systems and methods are provided. A method for providing haptic feedback to a user of a haptic feedback remote control device includes receiving, by a receiving device, an electronic command issued from the haptic feedback remote control device. The receiving device transmits a haptic feedback command to the haptic feedback remote control device. Based on the received haptic feedback command, the haptic feedback remote control activates a haptic feedback device, within the haptic feedback remote control, to provide a haptic feedback effect to a user of the haptic feedback remote control device.

The invention discloses a vehicle-bridge-storm flow coupling vibration analysis method for a road-railway bridge. According to the method, a vehicle subsystem, a bridge subsystem and a storm flow coupling field subsystem serve as a unified system by adopting a large system thought. According to static and dynamic interaction among the subsystems and a displacement coordination relationship betweenthe vehicle subsystem and the bridge subsystem, a vehicle-bridge-storm flow coupling vibration equation of the road-railway bridge is established; and by adopting a separated iterative method, dynamic responses of the vehicle subsystem and the bridge subsystem are solved, thereby evaluating running safety and comfort of vehicles and trains passing the road-railway bridge under the action of a storm flow coupling field. The dynamic effects of the vehicles and the trains can be considered at the same time; the static and dynamic effects and the aeroelastic and hydroelastic feedback effects of the storm flow coupling field on the vehicle subsystem and the bridge subsystem can be considered at the same time; and an effective method is provided for driving safety evaluation of the cross-sea road-railway bridge.

The invention discloses a three-degree-of-freedom translation force feedback hand controller. The device is improved based on a plane five-rod mechanism, and one-degree-of-freedom motion is added to the two-degree-of-freedom motion vertical to the plane. The device mainly comprises a base, a positioning support, a plane motion part, a vertical motion part, a drive motor, a counterweight and a force sensor. In accordance with the design requirements for a force sense interaction device, the three-degree-of-freedom translation device is subjected to kinematics analysis, work space design, position resolution analysis and the like. Compared with a traditional hand controller, a six-dimensional force / torque sensor is mounted at the tail end of the device, an accurate force sense feedback effect is realized, and the resolution of the feedback force is higher; moreover, the work space is larger, and the rigidity is higher. The three-degree-of-freedom translation force feedback hand controller disclosed by the invention has simple structure and high accuracy; the control method is simple and effective; the hand controller is convenient to operate and has broad application prospect.

The invention relates to an active-disturbance-rejection control structure construction method. The method includes the following steps of 1) adding an output feedback integration controller on a conventional active-disturbance-rejection control structure including a feedback controller C(s) / s and a preposed filter F(s) and satisfying the relations in the description; 2) designing an n+1 order full-dimensional expansion state observer for the n-order object under the conventional active-disturbance-rejection control structure; 3) obtaining the gain of the full-dimensional expansion state observer by means of the pole arrangement; and 4) constructing a new active-disturbance-rejection control law by carrying out the pole arrangement to the output feedback integration controller under the full-dimensional state feedback effect. The experimental and simulation results show that the active-disturbance-rejection control structure constructed according to the invention realizes the no-static control of the slope disturbance suppression, and also improves the effect of the step interference suppression, and the active-disturbance-rejection control structure provided has strong robustness and no-static slope disturbance suppression ability, and enhances the engineering practical value of active-disturbance-rejection control.