Hollow strain wave gearing
Granted: June 21, 2016
Patent Number:
9371900
A first shaft end of a hollow shaft of a hollow strain wave gearing is supported by a first support bearing with a collar interposed therebetween which is mounted to the outer-circumferential surface of the first shaft end. A second shaft end on the other end of the hollow shaft is supported by a second support bearing. A wave plug of a wave generator is integrally formed with the hollow shaft, and a wave bearing is mounted on the elliptical outer-circumferential surface thereof from the…
Wave generator and strain wave gearing
Granted: May 17, 2016
Patent Number:
9341252
A wave generator (5) for a flat-type strain wave gearing (1) has a first elliptical outer circumferential surface (6S) of a first wave generator portion (5S) defined by a first elliptical curve (C1), and a second elliptical outer circumferential surface (6D) of a second wave generator section (5D) defined by a second elliptical curve (C2). Compared to using a wave generator for which the contour is defined by a single elliptical curve, differences between the ball load distribution of…
Systems and methods for a motorized vent covering in an environment control system
Granted: April 26, 2016
Patent Number:
9322569
A motorized vent covering for an air vent of the environment control system, the motorized vent covering comprising an air flow restrictor for controlling air flow through the vent; and an actuator, the actuator including a motor configured to drive the air flow restrictor to control the flow of air from the vent, and a controller in communication with the motor, the controller configured to provide operating instructions to the motor to open or close the air flow restrictor to adjust…
System and method for feedback based traffic management
Granted: April 19, 2016
Patent Number:
9319326
A communication system that may include a traffic management module and a communication interface module. The communication interface module is arranged to: estimate a status of multiple channels by utilizing hardware channel status estimators, generate filler packets in response to the status of the multiple channels; wherein the filler packets are associated with the multiple channels; send the filler packets to the traffic management module. The traffic management module is arranged…
Internally-toothed gear unit with composite roller bearing, and wave gear device
Granted: April 12, 2016
Patent Number:
9309921
A wave gear device (30) uses, as a bearing which supports a first rigid internally-toothed gear (31) and a flexible externally-toothed gear (33) so as to be capable of rotation relative to each other, a composite roller bearing (38) equipped with a first roller (53) and second roller (54) for thrust bearing use and a third roller (55) for radial bearing use. Compared to a cross roller bearing or an angular bearing, the composite roller bearing (38) can be implemented as a highly rigid…
System and method for video statistical multiplexing adapting to internet protocol networks
Granted: April 5, 2016
Patent Number:
9307298
The present invention discloses methods and systems of statistical video multiplexing to improve the performance of video encoding by minimizing delay while achieving high video quality. The video encoders used in the system are capable of calculating the complexity of underlying video sources and communicating the complexity to the multiplexer. Furthermore, the video encoders are capable of estimating the look-ahead complexity, i.e. the future complexity and communicating the future…
Advanced video coding to multiview video coding transcoder
Granted: March 15, 2016
Patent Number:
9288497
Systems, methods and computer program products for transcoding advanced video coding (AVC) bitstreams into multiview video coding (MVC) bitstreams are described. In some implementations, a MVC transcoder may be used to convert non-anchor pictures (e.g., at a specified temporal point) into anchor pictures by using only inter-view prediction. The MVC transcoder also may utilize inter-view reference pictures (in addition to temporal reference pictures) in the motion estimation/mode decision…
Rigid coupling
Granted: December 29, 2015
Patent Number:
9222519
A slotted rigid coupling is configured in such a manner that an inner peripheral surface portion of a shaft hole, the inner peripheral surface portion being located within the slit-equipped fastening section of the coupling body, has an inner diameter d. The inner diameter d of an inner peripheral surface portion of the shaft hole, the inner peripheral surface portion being adjacent to the inner peripheral surface portion, is slightly larger than the inner diameter d. The inner…
Browsing and viewing video assets using TV set-top box
Granted: November 10, 2015
Patent Number:
9185351
Roughly described, a system and method for delivering video content to a user's client device in a video-on-demand (VOD) system, which includes providing a collection of video segments, the segments having a predefined default sequence; establishing a streaming video session according to a session-oriented protocol; transmitting toward the client device a script executable by the client device, the script operable to transmit navigational codes toward the head-end equipment in response…
Gap measurement device
Granted: October 20, 2015
Patent Number:
9163934
A gap measurement device 1 comprises a light source 5 for projecting light on a gap 3 to be measured, a lens optical system 6 for focusing on an imaging surface 7 a gap image 3A from light transmitted through the gap 3, and a light-receiving element 9 for receiving light of the gap image 3A formed on the imaging surface 7 of the lens optical system 6. A holed mask 8 provided with a light-transmitting hole 8a having a prescribed aperture size is arranged on the imaging surface 7, and the…
Wave gear device and flexible externally toothed gear
Granted: October 20, 2015
Patent Number:
9163710
In a hollow wave gear device, a rigid internally toothed gear and a wave generator are disposed adjacent along a center axis line so as to enclose a cylindrical barrel part of a flexible externally toothed gear from the outside. A pushed cylindrical portion adjacent to an external-tooth-formed cylindrical portion of the cylindrical barrel part is pushed from the outside and made to flex into an ellipsoidal shape by the wave generator disposed on the outside thereof, whereby external…
Wave gear device
Granted: September 22, 2015
Patent Number:
9140350
The interior space of a cup-shaped flexible externally toothed gear of a cup-type wave gear device is divided into a front interior space and a rear interior space by a partition mechanism. A lubricant is filled in the front interior space at the side of a wave generator, to which lubrication is required. The volume of the front interior space is set so that a necessary amount of lubricant is filled. Since the lubricant is not necessary to fill in the entire interior space of the…
System and method for routing and up-converting narrowband channels
Granted: August 18, 2015
Patent Number:
9112761
A device that may include a router and may also include narrowband generators arranged to generate samples of narrowband channels, a digital up converter (DUC). The DUC may include multiple DUC inputs. Different DUC inputs are associated with different frequency ranges. The router may include multiple router inputs, multiple router outputs and a routing circuit. The multiple router outputs are coupled to the multiple DUC inputs. The multiple router inputs are coupled to the narrowband…
Wave generator for wave gear device
Granted: August 18, 2015
Patent Number:
9109662
A wave generator for a wave gear device is provided with a pair of first rollers arranged in a position that is point-symmetric in relation to the center of a flexible externally toothed gear, a pair of second rollers, and a pair of third rollers. The first rollers are located on a long axis of the flexible externally toothed gear that is being flex into an ellipsoidal shape, and the second and third rollers are located in positions that are linearly symmetric in relation to the long…
Rotary actuator equipped with sensing mechanism, and joint unit
Granted: July 7, 2015
Patent Number:
9077228
A rotary actuator equipped with a sensing mechanism includes a motor and a reducer concentrically disposed inside a cylindrical housing; a scale for detecting the rotational position of a rotary arm, the scale being disposed on the circular outer face of the cylindrical housing; and a position sensor mounted in the facing section of the rotary arm that rotates along the circular outer face, the facing section being in a facing arrangement with the circular outer face. A detection…
Positioning control system for actuator provided with wave gear device
Granted: July 7, 2015
Patent Number:
9075399
A positioning control system for an actuator provided with a strain wave gearing is provided with: a semi-closed feedback controller FB(s) that controls a load shaft position ?1 on the basis of a feedback motor shaft position ?m; and a feedforward linearization compensator configured by incorporating a nonlinear plant model for an object to be controlled into a feedback linearization compensator using an exact linearization technique. The feedforward linearization compensator uses a…
Concentric multi-axis actuator
Granted: June 16, 2015
Patent Number:
9057429
A concentric double axis actuator has a two-stage cross roller bearing, and a preceding-stage actuator and a subsequent-stage actuator which are linked in tandem. The front end of a subsequent stage rotary output shaft of the subsequent actuator, said subsequent stage rotary output shaft passing through a hollow section of the preceding-stage actuator and projecting forward, is linked and fixed to an inner ring of the two-stage cross roller bearing, and the inner ring functions as a…
Wave gear device having three-dimensional contacting involute positive deflection tooth profile
Granted: June 16, 2015
Patent Number:
9057421
In a wave gear device, an involute tooth profile with the low pressure angle ? (<20°) is employed as a basic tooth profile of external teeth of a flexible external gear. In the principal section of the external teeth, the tooth depth thereof satisfies 2?0mn=2(1+c) mn (deflection coefficient ?0=1+c, 0<c<0.5), which is larger than the standard one. The shifting of the teeth which takes into account coning is performed along the tooth trace direction of the external teeth, so that…
Wave gear device having three-dimensional-contact tooth profile
Granted: June 9, 2015
Patent Number:
9052004
In a wave gear device, similarity-curve tooth profiles BC and AC are adopted as addendum tooth profile shapes for gears, the tooth profiles being derived from a movement trajectory M1 of an external tooth of a flexible externally toothed gear having zero deviation (?=1), in relation to an internal tooth at a main cross-section. Profile shifting is performed on the external tooth along the tooth trace for a movement trajectory M3 of the external tooth to share a bottom portion with the…
Self-calibration method for angle detector, angle detector, circumferential scale calibration device, and angle detector calibration device
Granted: June 2, 2015
Patent Number:
9046384
In a self-calibration method of an angle detector, an angle interval between first and second scale reader heads are set, so that a single rotation is not equally divided into an integer number of portions by a value of the angle interval and that a plurality of rotations N are equally divided into M equal portions by the value of the angle interval. Readings by the scale reader heads during N rotations of the divided circle are obtained at a pre-set data sampling interval. From…
