433 results about "Eye opening" patented technology

Over-terminating the differential mode impedance of a differential transmission line, such as an INFINIBAND™ cable, at the receiving end, improves the differential signal integrity for typical variations in termination network impedance component (e.g., resistor) and transmission line characteristics. Eye opening of the differential signal can be made larger with reduced attenuation but increased jitter compared to under-terminating the differential mode impedance. Because the differential signal quality (larger eye opening) is improved, data can be transmitted over a longer transmission line with the same transmitter and receiver.

An impeller assembly for centrifugal pumps that enables self-priming in a relatively short time period includes an impeller and at least one winglet (e.g., six winglets with a trapezium cross-sectional shape). The impeller includes an impeller body with an eye opening therein. The eye opening is configured for the passage of a fluid (e.g., water) therethrough when the impeller assembly is in use. The impeller body also includes at least one vane, with a leading end, disposed about the eye opening. The at least one winglet is positioned to protrude into the eye opening of the impeller body and may, for example, be coupled to the leading end of the vane.

An optical receiver with an electronic filter is described, the parameters of the filter being set by means of high-speed eye monitors. Also described is a high-speed eye monitor with threshold-value decision elements which are set close to the vertices of the eye of an eye diagram, the eye monitor being optimized through connection of a pseudo-error generator and comparison with setpoint values and outputting the eye opening and the Q-factor.

An integrated circuit. The integrated circuit is usable in a transceiver module. The integrated circuit includes an input port that is configured to receive a data stream. A clock port on the integrated circuit is configured to receive a reference clock diplexed with another signal or voltage used by the integrated circuit. An eye opening circuit is connected to the input port and clock. The eye opening circuit is configured to retime the data stream received at the input port. An output port is connected to the eye opening circuits The output port is configured to transmit a retimed signal from the eye opening circuit to a device external to the integrated circuit. A bypass circuit is connected to the input port and the output port. The bypass circuit may selectively bypass the eye opening circuit.

The invention is directed to a garment with an attached head-and-face cover, such as a ski mask, and a hood. The head-and-face cover has eye openings and a mouth opening. The garment has a body portion and a collar. When the head-and-face cover is not deployed on a head and face of the wearer, the head-and-face cover is inserted into a storage structure. The storage structure may be a pouch that dangles from the garment body portion by a connecting piece. In another embodiment, the storage structure may be a pocket sewn to the hood or to the front portion or back portion of the garment body portion.

The invention discloses a vehicle driver fatigue monitoring and early warning system and a vehicle driver fatigue monitoring and early warning method. The system comprises a face detecting and tracking module used for acquiring a face image, analyzing and processing the obtained face image to obtain the position of a face region; a feature point positioning unit used for carrying out face key feature point positioning; a normalization processing and feature extraction unit used for carrying out normalization treatment on the face image, carrying out feature extraction, extracting the eye feature information, the mouth feature information and the head feature information; a PERCLOS fatigue degree quantization index calculation unit used for acquiring the personalized feature information corresponding to a driver in a pre-established driver personalized information database according to the obtained feature information, classifying and judging the eye opening and closing states of the driver and counting the eye closing time, and performing the calculation of a PERCLOS fatigue degree quantitative index; and a fatigue degree judging unit used for judging whether the driver is in the fatigue driving state or not according to the PERCLOS fatigue degree quantitative index.

The present invention is directed to provide an eye opening degree estimating apparatus capable of properly estimating the opening degree of an eye. In an eye opening degree estimating apparatus, a search axis used for estimating the eye opening degree is set in an eye region image. By integrating luminance values of the eye region image in positions in the direction of the search axis along the direction perpendicular to the search axis, a vertical-direction integral projection histogram is generated. On the basis of a feature amount of at least one of the vertical-direction integral projection histogram in a position in the direction of the search axis in which the vertical-direction integral projection histogram has an extreme value and the eye region image, the opening degree of an eye included in the eye region image is estimated.

A respiratory inhalation resistence exercise device with a separate air inlet and air outlet. A mask, which provides a substantially airtight perimeter seal during inhaling and lung expansion, is provided which covers at least the user's nose and mouth. Multiple air inlet inserts are provided for interchangeable use in the air inlet, allowing different rates and resistence to airflow, as provided. The device is held in place, hands free, by straps around the user's head. The device may also cover the entire face of a user, with lenses in eye openings for sight. The device may be utilized continually in vigorous exercise, without use of a mouthpiece, without significant protruding parts, without movable valves or parts, and held in place without limitation on the user's activity.

A hooded garment wearable as a head covering or a head and face covering is provided. The garment includes a torso portion extending between an upper edge and a lower edge, and a head covering which includes an outer layer shaped and sized to circumscribe a wearer's head and an inner layer arranged on an inner surface of the outer layer. The head covering portion is attached to the upper edge of the torso portion and includes a head receiving opening defined by the upper edge of the torso portion, and a face opening defined by a peripheral edge of the outer layer. The inner layer is attached to the outer layer along and inwardly of the peripheral edge, and a lower edge of the inner layer is attached to the upper edge along outward opposing portions leaving a central portion of the lower edge unattached defining an opening between the outer layer and inner layer to receive the wearer's head. The inner layer defines an eye opening for the wearer's eyes, and a nose well formed below the eye opening to receive the wearer's nose.

The image-based system is used to observe and document eye responses which can be used to implement the procedures defined in the Standardized Field Sobriety Test as well as the Drug Recognition Expert Program. These eye responses include pupil movement, as well as pupil size and responses, for either one or both eyes simultaneously. The system includes a headset against which the subject places their face. The faceplate has an opening through which illumination devices transmit beams of infrared light to illuminate the subject's eyes. A reflective protractor, having a scale imprinted thereon, is mounted on the headset above the eye opening and facing the test administrator to provide an image of the stimulus target that is used by the test administrator. Two imaging devices are mounted on the headset opposite the eye opening to generate images of the subject's illuminated eyes. The generated images are transmitted to an image recording device for storage and an image display device for display to a test administrator.

A decision feedback structure for recovering a bit stream out of received signals is disclosed, wherein the sampling instant may be tuned in dependence of the sequence or pattern of the preceding bits so as to follow the bit sequence dependent instant of the maximum eye opening. The decision-feedback equalizer structure includes decision means for making a bit value decision at a sampling instant, a feedback path to feed back bit values to said decision means and means for adapting the sampling instant for a bit value decision made by said decision means with respect to the sampling phase depending on the bit values of preceding bits, in particular depending on the bit value of the previous bit.

The invention discloses a near infrared eye positioning and eye state identification method, belongs to the field of image processing and mode identification, and is applied to driver fatigue detection and visual line tracking. The method involves, first of all, performing face positioning on an input near infrared image, then positioning an eye area by use of an near infrared eye positioning algorithm based on a cascade structure, and finally determining an eye state by use of an eye state identification algorithm based on HOG-LBP characteristic fusion. The method can robustly position two situations, i.e., eye opening and eye closing under an infrared condition and accurately identify the eye state. At the same time, the calculation complexity is not high, and the real-time performance is satisfied.

Various embodiments for carabiners employing a pivoting gate and having a captive eye opening are disclosed. The carabiners of the present invention employ an arm laterally extending from the body of the carabiner to define a major opening and a captive eye opening within the interior of the carabiner. Some of the inventive carabiner designs provide the capability of opening the gate while the captive eye opening is maintained. Methods of fabrication and use of the carabiners are also disclosed.

The invention provides an automatic screen brightness regulating method and device which are used for an intelligent terminal. The automatic screen brightness regulating method comprises the following steps: the intelligent terminal detects eye states of a user through a front camera; the eye states comprise eye opening amplitude between the upper eyelid and the lower eyelid, and eye closing and blinking frequencies; the brightness of an intelligent terminal screen is automatically regulated according to the eye states of the user; when the eye opening amplitude of the user is smaller than a preset amplitude or the blinking frequency is greater than a preset value, the brightness of the intelligent terminal screen is controlled to be lowered. According to the automatic screen brightness regulating method and device provided by the invention, the brightness of the intelligent terminal screen is automatically regulated according to the detected eye states of the user to protect the eyes of the user and prevent over-fatigue of the eyes of the user.

The image processing method and apparatus perform preset image processing on input image data and outputting processed image data as output image data. In the method and apparatus, the present image processing includes eye correction processing for correcting a closed eye image in a human image having an eye in a closed state into an eye image in an open state. The method and apparatus are capable of performing eye opening processing on a human image having an eye being closed, correcting a failure created at the time of shooting and then outputting the image having the eye being open.

The invention provides an eye opening or closing state detection apparatus and method. The eye opening or closing state detection apparatus comprises an eye region detection unit which detects an eye region containing eyes in a target image, an eye division unit which divides the detected eye region to extract an eye image, and a state determination unit which determines whether the eyes are opened or closed based on the gray change in the eye image.

Accordingly, an aspect of the present invention provides a method of dynamically controlling a bias point of a photodiode of an optical receiver. According to the present invention a performance parameter indicative of an eye opening of an optical signal received by the optical receiver is detected. A bias voltage of the photodiode s dynamically adjusted so as to optimize a value of the detected performance parameter.

Provided is a test apparatus for testing a device under test, including: a level comparing section that receives a signal under test output from the device under test and outputs a logical value, the logical value indicating a comparison result obtained by comparing a signal level of the signal under test with preset first threshold and second threshold; an acquiring section that acquires the logical value output from the level comparing section, according to a strobe signal supplied thereto; an expected value comparing circuit that determines whether the logical value acquired by the acquiring section corresponds to a preset expected value; and a threshold control section that sets an upper limit and a lower limit of a voltage of the eye mask to the level comparing section as the first threshold and the second threshold, when an eye mask test is performed for determining whether an eye opening of the signal under test is larger than a predefined eye mask.

An adaptive equalizer apparatus with digital eye-opening monitor unit and the method thereof are provided. The apparatus comprises an equalizer unit, a sampling unit, and an eye-opening monitor unit. The equalizer unit equalizes a first signal to a second signal. The sampling unit over-samples the second signal and determines the logic status of the second signal according to the sampling data. The eye-opening monitor unit processes the sampling data and outputs a detecting signal according to the processing result. The detecting signal represents the adequacy of the parameters of the equalizer unit, and the equalizer unit determines whether to change its parameters according to the detecting signal.

The present invention relates to a face image preferential system. The system comprises a rotation calculation module for obtaining a rotation degree of a face in each face image, an image quality calculation module for obtaining the definition and face face contour quantity of each face image, a face state judgment module for judging whether two eyes in each face image are opened or not and judging whether a mouth in each face image is shut up or not, and a score calculation module for obtaining value sequencing of each face image. The present invention further relates to a face image preferential processing method. The system and the method of the present invention improves the identification accuracy of face images, can be used for excluding and selecting an optimal face figure, and have relatively good generalization.

An eye-opening margin measurement method for a high-speed serial data reception circuit which uses a circuit for eye-opening margin measurement involving operation of a clock data recovery circuit without fixing the clock phase. In this method, an error acceleration test can also be made on received data by giving an offset pulse signal to phase information to add a jitter component. The method uses a semiconductor integrated circuit device which includes a serializer/deserializer circuit (SerDes) for receiving serial data and a reference serializer/deserializer circuit (Ref_SerDes) for receiving an accompanying clock signal. The SerDes circuit converts received serial data into parallel data through a recovery clock whose phase is controlled using phase control signal P_CS generated by the Ref_SerDes circuit. An offset pulse signal Offset_Pulse from the pulse-forming circuit is applied to the phase control signal P_CS to make eye-opening margin measurement.

In a high-speed serial link, an eye finder diagnostic circuit has improved performance by being on-chip with the existing capture latch(es) of a receive equalizer. The eye finder circuit employs an additional capture latch with its input tied to the same input node as the existing capture latch(es) of a receive equalizer. The additional capture latch has a clock input and reference voltage input. The clock input is adjusted through a phase interpolator (or variable delay line) while the reference voltage input is adjusted by a voltage generator. A digital post processing circuit then compares the output of the additional capture latch with the output of the other existing capture latch(es), in order to determine the receive eye opening. The horizontal eye opening is measured by changing the phase of the additional capture latch through the phase interpolator, while the vertical eye opening is measured by changing the reference voltage of the voltage generator of the additional capture latch. The eye finder circuit, being on-chip and in-line with existing capture latch(es), employs a minimum of power, minimum of area, and minimizes the extra loading to the existing equalizer output.

An open-eye or closed-eye determination apparatus is provided with: an image capture section 11 for capturing an image of a region including the eye of an investigation subject; a width of eye opening measurement section 12 for detecting top and bottom eyelids of an investigation subject from the image captured by the image capture section 11 and measuring the width of eye opening between the edges of the top and bottom eyelids; a filter section 13 for subjecting the width of eye opening measured by the width of eye opening measurement section 12 to filter processing; and an open-eye or closed-eye determination section 14 for determining closed-eye when a value of the width of eye opening obtained by the filter section 13 minus the width of eye opening measured by width of eye opening measurement means is greater than a threshold value, and determining open-eye when this difference is a threshold value or less. According to this open-eye or closed-eye determination apparatus, open-eye or closed-eye determination can be made with good precision, without being influenced by image capture conditions and distance to the face.