1642results about How to "Avoid crosstalk" patented technology

A display device includes a piezoelectric layer. First electrically conductive electrodes are disposed on both sides of the piezoelectric layer. A bistable liquid crystal layer is disposed adjacent the piezoelectric layer. Second electrically conductive electrodes are disposed on both sides of the liquid crystal layer. The liquid crystal layer can be addressed by electrically addressing the piezoelectric layer causing the piezoelectric layer to move into contact with the liquid crystal layer, changing the brightness of pixels of the liquid crystal layer.

The embodiment of the invention provides a fingerprint identification display device and a driving method thereof, and can improve the precision of fingerprint identification. The device comprises a display panel, a light guide plate, an illumination component, a first polarizer, a second polarizer, and photosensitive induction units. The display panel is encapsulated with a liquid crystal layer and is divided into a plurality of display units; each display unit in a fingerprint identification region comprises a display sub-pixel and an identification sub-pixel. The illumination component is used for making the emitted detecting light to transmit in a total reflection mode in the light guide plate. The first polarizer is arranged between the liquid crystal layer and the light guide plate, and comprises a first region and a second region which are perpendicular in the polarizing direction. The second polarizer is arranged on the other side of the liquid crystal and comprises a third region and a fourth region which are perpendicular in the polarizing direction. The first region and the third region correspond to the display sub-pixel, and have vertical polarizing directions. The photosensitive induction units are arranged on the side of the second polarizer that is away from the liquid crystal layer and each photosensitive induction unit corresponds to each identification sub-pixel.

A high frequency micro connector has an insulating housing, multiple first terminals and multiple terminals. The insulating housing has a base, a first tongue and a second tongue. The first and second terminals are mounted through the base respectively on the first and second tongue. The second tongue includes pairs of high frequency signal transmission terminals each having a transverse extension section and a soldering section formed on the transverse extension section. The transverse extension sections of each pair protrude reversely and oppositely to increase the distance between the soldering sections therefore to prevent crosstalk between the high frequency signal transmission terminals.

A system to read magnetic stripe card(s) into a database, to select a specific card from the database, and to output the data related to that specific card to existing merchant card reader equipment with no modification. A simulated magnetic stripe card can be tethered to a cell phone via the headset jacks. A more complex design uses an un-tethered, simulated magnetic stripe card by including BLUETOOTH (or other wireless) communications on the card. This dual purpose invention is intended to eliminate the need to carry multiple magnetic stripe cards in a wallet or purse by consolidating all of the individual card information into a form to be reproduced onto the simulation card when needed by the user. It can also be used at a merchant POS card reader to allow an existing MSD reader to be converted to use in wireless cell phone transactions e.g. BLUETOOTH or NFC.

A connector having juxtaposed contact modules (6). In each contact module, signal contacts (16), a first ground plate (14), and a second ground plate (15) are held by an insulator (28). The first and second ground plates comprise plate sections (14a, 15a) each having a first surface and a second surface on the opposite side of the first surface, and the first surfaces face each other. Pairs of protrusions (14b, 15b) are formed at intervals on the second surfaces of the plate sections. The first and second ground plates are molded in the insulator and integrated together. The insulator has recesses (29) corresponding to the intervals of the protrusions and signal contacts are disposed in the recesses.

The invention discloses a touch panel, a display panel, a display device and a fingerprint identification method. The touch panel comprises a substrate, a plurality of fingerprint identification units arranged on the substrate, and an encapsulation layer covering the plurality of fingerprint identification units; and the fingerprint identification units include light-emitting devices and light-sensitive devices. In addition, the touch panel also includes optical path restricting structures arranged above all the light-emitting devices. Because of the optical path restricting structures arranged above the light-emitting devices, light emitted by the light-emitting devices is transmitted in the optical path restricting structures in a total reflection manner. Light of an emergent area is centralized in a small-angle range, so that light emitted by the light-emitting devices is sent out in a manner of quasi collimation; and thus the light irradiation range of the area of a to-be-identified fingerprint is reduced and the angles of reflected light are centralized. Most of light is irradiated on the light-sensitive devices corresponding to the light-emitting devices, so that the crosstalk of light received by the light-sensitive devices in different identification units is avoided and thus accurate fingerprint identification is realized.

The invention provides a signal connector and relates to the field of data transmission. The signal connector includes a backplane connection portion and a daughter card connection unit. The backplaneconnection portion is provided with a first signal terminal pair and a first shielding sheet, and the daughter card connection unit is provided with a second signal terminal pair and a second shielding sheet. When the backplane connecting portion and the daughter card connecting unit cooperate with each other, the first signal terminal pair and the second signal terminal pair are joined one by one, and the first shielding sheet and the second shielding sheet can form a shielding cavity which coats the first signal terminal pair and the second signal terminal. Through the signal connector provided by the invention, the better shielding structure can be formed between transmission signals, the signal crosstalk can be reduced, and the signal integrity can be improved.

The invention discloses a measurement system of a relative altitude and a relative attitude of an air vehicle and a measurement method thereof. Four ultrasonic ranging modules are installed at different positions of the air vehicle, ultrasonic wave emitting and receiving of the ultrasonic ranging modules are controlled through an MPU, ultrasonic wave transmission time is calculated, pressure parameters, temperature parameters and humidity parameters of atmosphere are collected so that the transmission speed of the ultrasonic waves can be compensated, meanwhile by means of a range error compensation module, range errors of an ultrasonic ranging sensor are compensated, relative height data of the air vehicle and the ground are measured, a relative height calculation model and a relative attitude calculation model are built, and the precise relative height between the centers of wings of the air vehicle and a landing runway plane and attitude angle information of an ultrasonic installation plane relative to the runway plane are calculated. The measurement system and the measurement method improve precision and stability of measurement of the relative height and the relative attitude during landing of the air vehicle.

The invention discloses a method for controlling channel access of a wireless sensor network. A base station node and each sensor node adopt a time frame structure with different lengths of time frame, so that the sensor nodes can reserve different time slots by dispatching to carry out data packet transmission, thereby not only reducing collision probability of forwarding data packets among sensor nodes in a high-density monitoring area and improving the utilization rate of wireless channel, but also effectively avoiding overhearing in the wireless sensor network and frequent status switching of a transceiver; therefore, the sensor nodes can be in dormancy status as fully as possible during idle transmission so as to greatly reduce energy consumption under the high-loading network condition and have good energy efficiency. A path reserve mechanism can reserve a multi-hop time slot in advance along data packet forwarding direction in time slot reservation phase, according to the time frame synchronizing characteristics of the sensor nodes on a forwarding path, thereby effectively avoiding end-to-end transmission delay of single data packet caused by intermittent transmission of data packets on the forwarding path.

In an example embodiment, the method of manufacturing an image sensor includes forming an interlayer dielectric (ILD) on a substrate. The substrate may have a plurality of pixels arranged thereon and each of the pixels includes a photoelectric conversion device configured to sense external light and generate photo charges. Furthermore, the method may include forming a metal on the ILD and removing portions of the metal to form a reflection pattern. Additionally, the method may include removing the ILD to a depth to form a trench adjacent to the reflection pattern and forming an air gap in the trench by forming oxide over the substrate such that the reflection pattern and the upper portion of the trench are covered.

A display device generates a holographic reconstruction of a three dimensional scene from a hologram; the device is operable such that the holographic reconstruction is the Fresnel transform of the hologram and not the Fourier transform of the hologram. With a conventional holographic display, at least some of the holographic reconstruction can always be described as the Fourier transform of the hologram.