Abstract: A technique for providing search results may include determining a first entity type, a second entity type, and a relationship type based on a compositional query. The technique may also include identifying nodes of a knowledge graph corresponding to entity references of the first entity type and entity references of the second entity type. The technique may also include determining from the knowledge graph an attribute value corresponding to the relationship type for each entity reference of the first entity type and for each entity reference of the second entity type. The technique may also include comparing the attribute value of each entity reference of the first entity type with the attribute value of each entity reference of the second entity type. The technique may also include determining one or more resultant entity references from the entity references of the first entity type based on the comparing.

Abstract: A technique for providing search results may include determining a first entity type, a second entity type, and a relationship type based on a compositional query. The technique may also include identifying nodes of a knowledge graph corresponding to entity references of the first entity type and entity references of the second entity type. The technique may also include determining from the knowledge graph an attribute value corresponding to the relationship type for each entity reference of the first entity type and for each entity reference of the second entity type. The technique may also include comparing the attribute value of each entity reference of the first entity type with the attribute value of each entity reference of the second entity type. The technique may also include determining one or more resultant entity references from the entity references of the first entity type based on the comparing.

Abstract: A vibration motor includes: a shell having an inner cavity; a vibrator; a magnetic component configured to drive the vibrator to vibrate; a first coil fixed to the shell; and a second coil fixed to the magnetic component. An alternating current applied to the first coil makes the vibrator to vibrate along the inner cavity. An adjustable current applied to the second coil makes a magnetic field of the magnetic component repel a magnetic field of the vibrator and provide a restoring force for the vibrator to reciprocate. A magnitude of the restoring force generated by the magnetic component is changed by adjusting a magnitude of the magnetic field of the magnetic component, to adjust a resonance frequency of the vibrator when the vibrator is vibrating. The resonance frequency of the vibration motor can be adjusted so that the vibration motor can have sufficiently high response in a wide frequency band.

Abstract: The present disclosure provides a speaker box. The speaker box includes an upper housing, a lower housing forming an accommodating space together with the upper housing, and a speaker unit accommodated in the accommodating space. The speaker unit includes a diaphragm configured to vibrate and produce sound. The diaphragm is disposed separately from the upper housing to define a front acoustic cavity. The speaker box further includes a sound channel communicating the front acoustic cavity with an external environment. The front acoustic cavity and the sound channel constitute a front cavity of the speaker box together. A baffle fixedly connected to the upper housing is disposed in the sound channel. The baffle and the upper housing define a resonant cavity in communication with the front acoustic cavity, and the resonant cavity has an inlet facing to the front acoustic cavity.

Abstract: The present application discloses a linear motor having a housing with an accommodation space, stoppers fixed on the housing and set at intervals, a vibrator sliding between the stoppers and a power coil driving the vibrator to reciprocate motion. The stopper includes a first iron core fixed on the housing and an auxiliary coil twinned on the first iron core. The motor also includes a positioning sensor used to sense the motion of the vibrator to obtain a feedback signal. According to the feedback signal detected by the positioning sensor, the auxiliary coil and/or the power coil act on the vibrator so as to adjust the reciprocating motion of the vibrator between the stoppers. The effect of the motion of the plan of present application is good and control precision is high.

Abstract: A touch panel is disclose in the present invention. The touch panel includes a panel body and a vibration motor mounted on the panel body for providing haptic feedback. Wherein the vibration motor is disposed at a center of the panel body, and a thickness of the panel body is gradually reduced from the center thereof toward an edge thereof. Another touch panel disclosed in the present invention includes a panel body, and a plurality of vibration motors mounted on the panel body for providing haptic feedback. Wherein the panel body includes a plurality of vibration areas, the number of the vibration areas is same as that of the vibration motors; each of the vibration motors is disposed corresponding to one vibration area and disposed at a center of the vibration area; and a thickness of the vibration area is gradually reduced from the center thereof toward an edge thereof.

Abstract: Embodiments of the present disclosure relate to audio devices, especially to a voice coil and a speaker. The voice coil includes a voice-coil winding and a lead structure led out from the voice-coil winding. The lead structure includes a first starting terminal, a second starting terminal, a first lead and a second lead. Both the first starting terminal and the second starting terminal are located on the voice-coil winding. The first lead is formed by extending from the first starting terminal, and the second lead is formed by extending from the second starting terminal. The first lead and the second lead are centrally symmetrical about a geometric center of the voice-coil winding. The voice coil and the speaker in the embodiments of the present disclosure have an advantage of weakening swinging of a speaker during operation.

Abstract: The present disclosure provides a speaker box. The speaker box includes an upper housing, a lower housing forming an accommodating space together with the upper housing, and a speaker unit accommodated in the accommodating space. The speaker unit includes a diaphragm configured to vibrate and produce sound. The diaphragm is disposed separately from the upper housing to define a front acoustic cavity. The speaker box further includes a sound channel communicating the front acoustic cavity with an external environment. The front acoustic cavity and the sound channel constitute a front cavity of the speaker box together. A baffle fixedly connected to the upper housing is disposed in the sound channel. The baffle and the upper housing define a resonant cavity in communication with the front acoustic cavity, and the resonant cavity has an inlet facing to the front acoustic cavity.

Abstract: The present disclosure provides a sound device which includes a basket, a vibration system fixed to the basket, and a magnetic circuit system for driving the vibration system to vibrate. The vibration system includes a diaphragm fixed to the basket, and the diaphragm includes a vibration portion and a folded ring portion extending from an edge of the vibration portion, where the folded ring portion is fixed to the basket. The sound device further includes a reinforcing rib fixed to one side of the vibration portion close to the magnetic circuit system and/or one side of the vibration portion away from the magnetic circuit system. Compared with a related technology, the sound device in the present disclosure has better acoustic performance in high frequency.

Abstract: A security system permits limited access into a building for authorized visitors. The security system includes an access interface pad installable at a building entryway and a camera device releasably secured to the access interface pad with an anchor. The anchor allows the camera device to detach from the access interface pad in response building access being authorized by the security system so that an authorized visitor can wear the camera device while in the secured building. The security system can both communicate with a remote device so that data captured by the camera can be transmitted to a user in real time and automatically analyze information from the camera with respect to certain security parameters.

Abstract: A technique for providing search results may include determining a first entity type, a second entity types and a relationship type based on a compositional query. The technique may also include identifying nodes of a knowledge graph corresponding to entity references of the first entity type and entity references of the second entity type. The technique may also include determining from the knowledge graph an attribute value corresponding to the relationship type for each entity reference of the first entity type and for each entity reference of the second entity type. The technique may also include comparing the attribute value of each entity reference of the first entity type with the attribute value of each entity reference of the second entity type. The technique may also include determining one or more resultant entity references from the entity references of the first entity type based on the comparing.

Abstract: A security system permits limited access into a building for authorized visitors. The security system includes an access interface pad installable at a building entryway and a camera device releasably secured to the access interface pad with an anchor. The anchor allows the camera device to detach from the access interface pad in response building access being authorized by the security system so that an authorized visitor can wear the camera device while in the secured building. The security system can both communicate with a remote device so that data captured by the camera can be transmitted to a user in real time and automatically analyze information from the camera with respect to certain security parameters.