48 results about "Dot-matrix display" patented technology

The invention provides an electronic display device circuit, an electronic display device and an electronic price tag system, and the circuit comprises a main control module which is used for receiving an electronic signal corresponding to graphic and text information; the driving signal generation module is connected with the main control module and is used for receiving the electronic signal and outputting an LED driving signal; the driving signal amplification module is connected with the driving signal generation module and is used for amplifying the LED driving signal; the LED dot matrix driving module is connected with the driving signal amplification module and is used for receiving the amplified LED driving signal and outputting an LED dot matrix driving signal; and the LED dot matrix display module is connected with the LED dot matrix driving module so as to drive the LED dot matrix display module to be lightened through the LED dot matrix signal, so that the LED dot matrix display module displays the graphic and text information. Through the structure, the technical effect of improving the visual angle of the electronic display device can be achieved.

The invention discloses an outdoor dot matrix display screen picture flaw detection method, device and system based on texture features and a server. According to the method, at least two pure color test pictures are obtained, and defect full-coverage detection is realized by utilizing sensitivity differences of different color channels; besides, multi-scale feature extraction is carried out based on a Gabor filter, so that scale features such as single-point dead pixels, regional dark spots and module-level distortion can be captured, and multiple types of flaws such as brightness deviation and large-area uneven brightness can be covered. According to the method, the detection rate of traditional leak detection scenes such as small dead pixels and color deviation is increased to 95% or above, the environment robustness is high, the false detection rate in the complex illumination and vibration environment is low, and a high-reliability automatic defect detection solution is provided for the field of outdoor advertisements and public display.

The invention discloses a dot matrix display character recognition method based on color features, and the method comprises the steps: S1, receiving an original image and a region of interest as input, and removing non-target pixels in the image through background filtering; s2, the filtered effective pixels are sent to a K-Means clustering algorithm for color quantization, and main color clusters in the image are automatically summarized; s3, in a color measurement matching stage, determining a target color representing a character foreground by calculating the Euclidean distance between the center of each color cluster and a preset target color in an RGB space; and S4, performing foreground mask reconstruction based on a matching result, generating a binary image only containing target character pixels, and sending the binary image to a standard OCR engine for final character recognition. According to the method, target color characters can be effectively isolated, background interference is reduced, and a foreground mask with high contrast and high fidelity is finally generated for a subsequent OCR engine to use.

The invention provides a traffic road ghost probe warning lamp, and relates to the technical field of traffic signals. The warning lamp comprises a detection device, a warning device and a control device. The detection device comprises at least two groups of laser correlation sensors, an ultrasonic distance measuring sensor and a networking monitoring camera, and is used for detecting approaching conditions of pedestrians, non-motor vehicles and vehicles at an intersection. The warning device comprises an LED lamp strip, a full-color LED dot matrix display screen and a motor vehicle display screen and is used for carrying out real-time early warning on passing vehicles and pedestrians. The control device comprises a control circuit board and a power management circuit. According to the invention, through a plurality of sensor fusion technologies, accurate detection of pedestrians and vehicles at the intersection is realized, and real-time early warning is carried out on passing vehicles and pedestrians by using the LED lamp strip and the display screen, so that traffic accidents caused by a ghost probe phenomenon are effectively prevented, the safety and traffic efficiency of the traffic intersection are improved, and accident risks are reduced.

The present invention is applicable to the field of display technologies, and provides a method, an apparatus, a storage medium, and a display device for optimizing dynamic display effects. The method includes: obtaining a video to be displayed; obtaining a dynamic image subject in the frame of the picture, extracting the coordinates of all joint points of the dynamic image subject to obtain a branch position function of the dynamic image subject, and constructing a dot matrix grid graph; superimposing the branch position function and the dot matrix grid graph, and marking the sub-grids covered by the branch position function as bright spot grids; obtaining the grid coordinates of all the bright spot grids to obtain a bright spot set; generating a frame to be played, and outputting the frame to be played to an LED dot matrix display panel for playing. The advantage of this application is that it can automatically transform and adapt the human image, etc. in the video to be played, and significantly improve the display effect when such display devices perform dynamic display.

The utility model discloses a LED dot matrix display light-emitting support lamp, including handheld part and the lamp body part of installing at the top of handheld part, the handheld part includes handle outer cover and installs two groups of symmetrical handle inner lining of setting in handle outer cover inside and is composed, handle inner lining top side wall is provided with internal thread, the lamp body part includes two groups of half spherical transparent cover of clamping connection, two groups half spherical transparent cover bottom are provided with external thread and are connected through the thread with handle inner lining, install the support and luminous body in the lamp body, support bottom is installed with PCB board no.

1. The name of the product of this design: Circuit Board (Digital Dot Matrix HY‑F Series). 2. Purpose of this design product: used for LED digital dot matrix display module. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the key points of the design: Reference diagram of the design 1 in use. 5. This design product is a thin product, and the left view, right view, top view and bottom view of Design 1 and Design 2 are omitted. 6. Designate Design 1 as the base design.

Provided is a display device that makes a desired pattern or the like visible in the non-display state and is capable of displaying a display image without allowing perception of the complementary color of the color of the pattern or the like. The display device includes: a dot matrix display panel; and a design layer disposed in front of a front surface side of the display panel. The design layer includes a design part that includes a binder resin and light-reflective colored particles dispersed in the binder resin. The light-reflective colored particles reflect light having a specific wavelength while absorbing light having a wavelength other than the specific wavelength.

The invention discloses a Chinese character braille conversion method and system oriented to embedded equipment. The method comprises the following steps: firstly, linearly storing a Chinese character pinyin library according to a GB2312 coding sequence, wherein each Chinese character pinyin data record adopts a fixed-length L byte; secondly, analyzing an area code byte Qh and a bit number byte Q1 from the GB2312 code; calculating a physical offset address of the Chinese character pinyin data according to the area code byte Qh and the bit number byte Q1, and adding the physical offset address with the initial physical address to obtain a final physical address; directly reading the Chinese character pinyin data with the fixed length of L from the final physical address; and finally, converting the Chinese character pinyin data into 6-bit braille codes, converting the 6-bit braille codes into 8-bit data through bit splicing and regrouping, and outputting the 8-bit data to an 8-bit data latch to drive braille dot matrix display. According to the method, traversal searching is replaced by direct address calculation, the algorithm time complexity is improved, and the method is suitable for an embedded environment and has the advantages of being high in efficiency and low in resource occupation.

The utility model relates to the technical field of braille dot matrixes, in particular to a braille dot matrix display device with a self-locking function. A braille dot matrix display device with a self-locking function comprises a base, a middle shell and the like, the top of the base is fixedly connected with the middle shell, the top of the middle shell is fixedly connected with a top cover, six contact blocks are slidably arranged on the top cover at intervals, six electromagnet assemblies are evenly arranged in the base, and jacking assemblies are arranged in the six electromagnet assemblies. The six jacking assemblies correspond to the six contact blocks respectively. According to the utility model, the permanent magnet and the ejector pin move up and down by controlling the current direction so as to drive the contact block to ascend and descend, and self-locking is realized when the contact block ascends to the highest position or descends to the lowest position by utilizing the interaction of the steel ball, the iron core and the ejector pin, so that the problem that most braille display devices are difficult to realize dot matrix self-locking is solved, and the heating value is effectively reduced; stable touch force feedback is provided for a user, and the reading requirements of visually impaired people are better met.

Provided is a sensor unit that simultaneously displays a threshold value and a physical quantity as well as other information. The sensor unit causes the dot matrix display unit to display a threshold value and a physical quantity in a first display form, and causes the dot matrix display unit to display the physical quantity, the threshold value, and additional information different from the physical quantity and different from the threshold value in a second display form (e.g., a power mode). The area of the third display region (303) for the threshold value in the second display form is smaller than the area of the second display region (302) for the threshold value in the first display form. The area of a fourth display area (304) for information in the second display form is obtained by reducing the area of the second display area (302).

The utility model provides a bicycle tail lamp capable of displaying tire pressure warning, and relates to the technical field of bicycle tire pressure monitoring, the bicycle tail lamp comprises a bicycle main body, a warning display tail lamp structure and two tire pressure detection assemblies, the bicycle main body comprises a bicycle frame, a seat connecting rod, a front tire and a rear tire, the two tire pressure detection assemblies are installed at the positions of a front tire and a rear tire of the bicycle body, the tire pressure detection assemblies are used for detecting air pressure in the tires in real time and transmitting detection results to the warning display tail lamp structure for real-time display flickering, and through the design of the warning display tail lamp structure and the two tire pressure detection assemblies, the tire pressure in the tires can be detected in real time. The tire pressure warning system integrated in the bicycle tail lamp (warning display tail lamp structure) can monitor the tire pressure in real time, and when the tire pressure is abnormal, the system can immediately trigger the warning and display functions of the tail lamp (color dot matrix display screen) no matter the tire pressure is too high or too low.

The invention relates to the technical field of timing display, and discloses a multi-user visual sauna timing display system, which comprises an event detection module used for receiving a user entry event, a confirmation event, a switching event and a release event; the session management module is used for generating a user session when a user entry event is received, and establishing a binding relationship between the user session and an unoccupied session display unit; the timing module is used for timing the user session when the user session is in a running state; the dot matrix display module is used for displaying dot matrix display contents related to corresponding user sessions in a plurality of session display units; and the control module is used for executing setting of the session display unit and switching of the identification display unit. The display content is updated according to the real-time timing information through the user session management and timing module, so that the common problem of timing confusion or information loss during use by multiple persons is avoided.

The utility model provides a tunnel traffic accident front-end driving safety grading early warning management and control system. A grading early warning subsystem comprises a first-level early warning area, a second-level early warning area, a forbidden area, a continuous forbidden area and a hole opening warning area. Early warning devices are arranged on the two sides of each area respectively, each early warning device comprises a dot matrix display module, a red strobe light and a blue strobe light, the red strobe light and the blue strobe light are arranged on the upper portion of the dot matrix display module, and each early warning device is further internally provided with a controller, a power module, a voice broadcast module and a wireless communication module; and the controller is electrically connected with the wireless communication module, the red flashing light, the blue flashing light, the voice broadcast module, the dot matrix display module and the power supply module. According to the utility model, a sensing technology and a wireless communication technology are adopted to monitor whether an accident occurs in the tunnel, and when the accident occurs, acousto-optic and display alarm can be carried out at the first time through the grading warning device at the tunnel portal, so that external vehicles are prevented from further driving into the tunnel, secondary accidents are avoided, and more accurate technical support is provided for tunnel safety management.

The invention relates to the field of reversible electro-deposition dot matrix display, in particular to a reversible electro-deposition dot matrix display device assisted by high-valence metal ions and a method of the reversible electro-deposition dot matrix display device. The high-valence metal ions serve as electrolyte additives, and the deposition behavior process of the metal ions is assisted by the high-valence metal ions. By adopting the technical scheme, the electric bilayer and ion adsorption behaviors are regulated and controlled through introduction of high-valence metal ions, metal deposition is improved, and the optical regulation and control performance is improved.

The invention provides a bicycle tail lamp capable of displaying tire pressure warning, and relates to the technical field of bicycle tire pressure monitoring, the bicycle tail lamp comprises a bicycle main body, a warning display tail lamp structure and two tire pressure detection assemblies, the bicycle main body comprises a bicycle frame, a seat connecting rod, a front tire and a rear tire, the two tire pressure detection assemblies are installed at the positions of a front tire and a rear tire of the bicycle body, the tire pressure detection assemblies are used for detecting air pressure in the tires in real time and transmitting detection results to the warning display tail lamp structure for real-time display flickering, and through the design of the warning display tail lamp structure and the two tire pressure detection assemblies, the tire pressure in the tires can be detected in real time. The tire pressure warning system integrated in the bicycle tail lamp (warning display tail lamp structure) can monitor the tire pressure in real time, and when the tire pressure is abnormal, the system can immediately trigger the warning and display functions of the tail lamp (color dot matrix display screen) no matter the tire pressure is too high or too low.

The application relates to the technical field of protective shells, and provides a dot matrix display circuit structure, a display control method and an intelligent protective shell.The dot matrix display circuit structure comprises a circuit board, a plurality of light-emitting lamp beads, a main control chip and control chips of the light-emitting lamp beads.The plurality of light-emitting lamp beads are arranged in a dot matrix mode on the circuit board, and the plurality of light-emitting lamp beads are sequentially connected to form a serial path, each light-emitting lamp bead comprises a control chip and a light-emitting chip, the main control chip is electrically connected to the serial path, and is used for sending a control signal to the serial path, and the control chip of each light-emitting lamp bead is used for acquiring a control signal matched with the light-emitting chip to control the light-emitting chip to emit light or pass the control signal not matched with the light-emitting chip.The technical problem that a large current needs to be used to drive light-emitting in a scanning control mode in the prior art, which leads to unstable work of components, causes electromagnetic interference and generates a large amount of heat is solved.

The application provides a dot matrix LED display control circuit, method and display module, and relates to the technical field of display. The dot matrix LED display control circuit comprises a plurality of column drive circuits, a plurality of row scanning drive circuits, a voltage-controlled frequency modulation output circuit and a controller; the controller is connected with one end of a plurality of columns of LEDs in the display through the plurality of column drive circuits; the controller is connected with the plurality of row scanning drive circuits through the voltage-controlled frequency modulation output circuit, so that the voltage-controlled frequency modulation output circuit outputs waveform signals with frequencies corresponding to voltage signals output by the controller to the plurality of row scanning drive circuits; and the plurality of row scanning drive circuits are connected with the other end of a plurality of rows of LEDs in the display, so that a target row scanning drive circuit provides a high-level signal to one end of a target row of LEDs. The selective row scanning is realized without starting from the first row and scanning row by row from top to bottom, and the local display refresh frequency of the display is dynamically improved.

The utility model relates to the technical field of organic light-emitting diode display, in particular to an organic light-emitting diode dot matrix passive driving system and a test box. The system comprises a passive dot matrix display assembly and a control assembly, and the passive dot matrix display assembly is composed of an organic light emitting diode passive dot matrix; the control assembly is connected with the passive dot matrix display assembly, and the control assembly is used for adjusting the display picture of the passive dot matrix display assembly according to the current display requirement and adjusting the display frequency of the passive dot matrix display assembly according to the current display frequency. Therefore, through the organic light-emitting diode dot matrix passive driving system, the principle of passive driving display images can be demonstrated, a user is helped to better understand the principle and application of an organic photoelectric device, and the frontier science and the effect of the frontier science in daily life can be intuitively felt.

The utility model discloses a combined screen which is provided with a stroke segment display area, a dot matrix display area and a non-display area, and the non-display area is located on the periphery of the stroke segment display area and the dot matrix display area. The combined screen comprises an upper base plate substrate, a lower base plate substrate and sealing frame glue, and the sealing frame glue is arranged between the upper base plate substrate and the lower base plate substrate and enables the upper base plate substrate and the lower base plate substrate to be oppositely bonded and fixed. The sealing frame glue is located on the non-display area so as to enclose and seal the stroke segment display area and the dot matrix display area; the stroke segment display area and the dot matrix display area are filled with liquid crystal materials respectively. The combined screen is not only small in thickness, but also short in assembly time. The utility model further discloses a vehicle-mounted instrument which comprises the combined screen.

The utility model relates to an electronic circuit and display technology, and discloses an LED dot matrix display control device with a protective structure, which comprises a protective cover, the outer wall of the protective cover is fixedly connected with a mounting foot, the inner wall of the mounting foot is in sliding connection with a mounting rod, the inner wall of the mounting rod is fixedly connected with a mounting column, and the mounting column is fixedly connected with the outer wall of the protective cover. A plurality of reset springs are fixedly connected to the outer wall of the mounting column, limiting balls are fixedly connected to the other ends of the reset springs, a mounting plate is slidably connected to the outer wall of the mounting rod, a plurality of mounting holes are formed in the inner wall of the mounting plate, and a heat dissipation assembly used for heat dissipation is arranged on the inner wall of the protective cover. The heat dissipation assembly comprises a fan fixing plate. According to the utility model, the protective cover is fixed on the mounting plate by using a detachable structure, so that the protective cover can be quickly detached while protecting internal electronic components, and workers can timely overhaul the internal electronic components.

A dot matrix display and a preparation method therefor. The dot matrix display (10) comprises: an insulating substrate (11), a plurality of light-emitting units (12), a plurality of first encapsulants (13), a first light-shielding layer (14), a plurality of second encapsulants (15), and a second light-shielding layer (16). The plurality of light-emitting units (12) are provided on the insulating substrate (11) and are arranged in a matrix. Each first encapsulant (13) correspondingly encapsulates the outside of each light-emitting unit (12). The first light-shielding layer (14) is provided on the insulating substrate (11) and comprises a plurality of first through holes (141), and the first encapsulants (13) are located in the first through holes (141) of the first light-shielding layer (14). The second light-shielding layer (16) is provided on the first light-shielding layer (14) and comprises a plurality of second through holes (161), and each second encapsulant (15) encapsulates each first encapsulant (13) and is located in a second through hole (161) of the second light-shielding layer (16).

The invention relates to a medical instrument applied to hand rehabilitation training, and belongs to the technical field of medical rehabilitation equipment. The instrument comprises a hand posture module, an embedded gyroscope of the hand posture module can monitor the angle of hand movement, the hand posture module has adjustable spring resistance and accords with ergonomics design, a dot matrix display module is a matrix screen composed of RGB LEDs, and a music control module can play specified voice files according to needs. The precise rehabilitation training for the patient with the hand function injury is realized. The PC program of the upper computer realizes real-time monitoring of position and force and dynamic control of the lattice screen, and provides personalized training schemes according to different injury conditions of patients. The device is simple in structure and comfortable to use, control software is convenient to operate, the device is widely suitable for rehabilitation training of stroke and other hand injury patients, and the problems that a traditional rehabilitation means is long in rehabilitation period, poor in effect, high in cost and the like are solved.

This invention relates to a holographic user interface module and a bathroom system including the module, wherein the bathroom system may include bathroom fixtures (such as sinks, faucets, and toilets) and the holographic user interface module. The module can be used to control the operation of the bathroom fixtures. The module may include a printed circuit board assembly (PCBA), a display screen (such as a liquid crystal display (LCD), projector, dot matrix display, light-emitting diode (LED), etc.) connected to the PCBA, a holographic 3D panel, and an infrared touch strip. When light is emitted from the display screen, the light can be guided to the holographic 3D panel, and the holographic 3D panel can convert the light into a screen image. The infrared touch strip can analyze the user's activation of the screen image and control the bathroom fixtures based on the activation of the screen image.

The invention relates to the technical field of home appliance assembly, in particular to an LED dot matrix display screen and a refrigeration home appliance, the LED dot matrix display screen comprises a large frame and a small frame fixedly connected in the large frame, a display screen body is arranged in the small frame, the LED dot matrix display screen further comprises a movable frame, a first connecting rod is fixedly connected in the movable frame, and a second connecting rod is fixedly connected in the movable frame. The first connecting rod is rotationally connected with the inner wall of the small frame, the display screen body is slidably connected to the top end of the movable frame, a wireless storage battery is installed on the outer side of the movable frame and used for providing power for the display screen body, and a first arc spring is fixedly connected between the inner wall of the movable frame and the inner wall of the small frame. Through the structural design of the clamping mechanism and the clamping groove, the display screen body is rapidly fixed and disassembled, locking can be unlocked by moving the clamping mechanism, the movable frame automatically inclines and rotates under the action of the first arc-shaped spring, the display screen body is easy to take out, tools are not needed, operation is easy and convenient, and the disassembly, assembly and maintenance efficiency is remarkably improved.

The embodiment of the invention provides a fan, an air conditioner, a control method of the air conditioner and a computer readable storage medium, the fan comprises a wind wheel, a motor, a control circuit board and a display circuit board, the wind wheel is provided with fan blades, the motor is used for driving the wind wheel to rotate, the control circuit board is installed on the motor, and the display circuit board is electrically connected with the control circuit board. The display circuit board is integrated on the fan blades and is provided with a plurality of LED light sources; when the motor rotates, the motor drives the wind wheel, the control circuit board and the display circuit board to rotate synchronously, and the control circuit board is used for controlling the LED light source to display target display information during rotation. Firstly, after the display circuit board rotates along with the wind wheel, fixed character display of the display area is changed into dot matrix display, and the richness of display content can be better improved on the premise of low cost; in addition, the display circuit board becomes a part of the wind wheel, the loss of the wind quantity is avoided, and the problem that the position of an existing display board affects return air is solved.

The utility model discloses a portable low-lying area water level warning indicator which comprises a bearing main rod and a bearing auxiliary rod, the bearing main rod and the bearing auxiliary rod are hinged to each other through a stand column base, a waterproof stand column is arranged at the top of the stand column base through a swing limiting mechanism, and a plurality of non-contact liquid level sensors are arranged in the waterproof stand column. One side of the top end of the waterproof stand column is connected with an LED dot matrix display screen through a rotating holder, and a reinforcing assembly is further arranged between the bearing main rod and the bearing auxiliary rod. When the water level warning indicator is unfolded and placed in a wading level, the non-contact liquid level sensor senses the water level height of accumulated water so that a signal can be fed back to the LED dot matrix display screen, the water level height value of the accumulated water at the moment can be automatically displayed in the LED dot matrix display screen, and therefore the wading depth of a driving vehicle can be warned; therefore, the occurrence of serious accidents of vehicle wading and anchoring caused by the misestimated water level and even vehicle destruction and people death caused by the fact that the vehicle is untrapped due to the fact that the vehicle is anchored and cannot get out of water subsequently can be reduced.

The utility model discloses an intelligent terminal electronic tag and a warehouse management system, and relates to the technical field of electronic tags. The intelligent terminal electronic tag comprises a lower shell, an upper shell, a display screen and operation keys, a circuit board is arranged in the upper shell, the upper shell is connected with the lower shell, and a main control chip is arranged on the back face of the circuit board; the display screen is a liquid crystal dot matrix display screen, the liquid crystal dot matrix display screen can display bar codes, two-dimensional codes, characters and numbers, the display screen is arranged on the front face of the upper shell, and the display screen is connected with the circuit board; the operation keys are arranged on the front face of the upper shell and connected with the circuit board. According to the intelligent terminal electronic tag, the display information on the display screen can be adjusted through the operation keys, the richness of the display information can be improved, and the error accumulation effect can be greatly reduced.

The present invention discloses a segmented touch display screen and input device, including a dot matrix display area and a driving circuit, wherein a plurality of dot matrix display areas are provided, and the plurality of dot matrix display areas are arranged in sequence; the driving circuit is respectively connected to the segmented touch display screen to drive each of the dot matrix display areas to display information. In this way, when driving the segmented display screen, each dot matrix display area can be driven separately. Compared with the prior art, in which the LCD display screen is driven as a whole display dot matrix by a driving circuit, the segmented touch display screen has relatively low power consumption, lower driving requirements, and correspondingly low costs, and can meet the application requirements of low power consumption and low cost for electronic input devices such as keyboards.

The utility model relates to the technical field of full-color light-emitting diode (LED) display, in particular to a full-color dot matrix display screen, which comprises a lamp panel, a light shielding plate, a light mixing plate, an outer lens and a shell, the outer lens is fixed at the front part of the shell and forms an inner cavity, and the full-color dot matrix display screen is characterized in that the lamp panel, the light shielding plate and the light mixing plate are sequentially and correspondingly fixed in the inner cavity from back to front; the light mixing prism is scientific in design, reasonable in structure and safe and reliable in function, through light diffusion of the light mixing prism, large-angle refraction is conducted on RGB three-color light, the three-color light in any proportion is evenly mixed, rich colored light is generated, colorful dot matrix display is achieved, the effect is ideal, and the manufacturing cost is not high.