3667results about "Writing boards" patented technology

An electronic stylus system includes an electronic stylus and base receiving unit. The electronic stylus includes a first ultrasonic transmitter, a second ultrasonic transmitter, an electromagnetic transmitter, and a writing tip. The base receiver unit includes a first ultrasonic receiver, a second ultrasonic receiver, and an electromagnetic receiver. The ultrasonic receivers of the base unit are operable to receive signals transmitted by the ultrasonic transmitters of the electronic stylus. Similarly, the electromagnetic receiver of the base unit is operable to receive signals transmitted by the electromagnetic transmitter of the stylus. The location of the tip of the electronic stylus relative to a given reference point is determined using the locations of two ultrasonic transmitters relative to the two ultrasonic receivers.

The invention relates to a novel reusable water writing paper which is prepared from a color developing component and a substrate. According to the color developing principle of the novel reusable water writing paper, a water photochromic dye is used as the color developing component; after the paper is wetted, molecular configuration or comformation change is caused to further cause obvious color change to develop color; after water is dried, a molecular structure is recovered, and the color fades; different colors can be shown through change of molecular substituent groups. When people write on the paper, handwriting is clear and is not easily diffused. The surface of the paper is smooth and is reusable; the paper, people can do writing and drawing exercises on the paper with a writing brush and can also write on the paper with a pen. In addition, no ink printing can be realized by spraying water. Due to the special response to water, the water writing paper can be applied to humidity detecting cards, safety and anti-counterfeiting field and the like.

An electronic writing tablet is composed of one or more layers on which an image is formed and can be selectively erased. One aspect of the invention is a bistable cholesteric writing tablet on which an image is formed while applying writing pressure. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color. Another aspect of the invention is a multi-color stacked writing tablet in which a color of an image is selected (usually by applying a suitable voltage) while applying writing pressure using an instrument such as an untethered stylus on the surface of the tablet. The writing tablet includes at least two or three stacked layers of bistable cholesteric liquid crystal material. Selected colors can be additively mixed to achieve intermediate colors as desired. The image can be fully erased and new images written on the tablet. In addition, one can selectively erase any or all portions of the written image to restore the original background color.

A dry erase panel assembly for use as a teaching aid includes a first panel with a top edge, a bottom edge, a left edge, and a right edge. The first panel includes a writing section that is adapted to eraseably receive markings thereon. The panel assembly further includes a second panel with a top edge, a bottom edge, a left edge, a right edge, and a holding section. The second panel is secured to the first panel along the left edge and the right edge, whereby the holding section is spaced from the writing section to define a gap therebetween adapted to receive an information template.

A modular collaborative panel system intended for use on walls, frames and stands is disclosed. The system uses dry erase boards, chalk or black boards, or other panels having at least one writing surface. The panels have notches or cut-outs on each side so the panels can be mounted to a wall or a frame using pegs. The system combines panels in rows or columns, or both, to form a large, modular system for use at meetings, gatherings or other assemblies. The system allows a large number of users to contribute to a presentation, and also allows users to view the presentation.

The present invention provides a writing board system including several white boards and a frame for mounting to a vertical surface 20. The white boards may be removably interconnected to one another and supported to the frame by a series of mounting brackets.

A software development system according to the present invention comprises a business component storage layer for storing at least one business standard component of a program; a business component setting layer for setting attribute information of each business standard object, including object type, operating method, execution condition, execution sequence and database (DB) connection information; an application program execution layer for operating and controlling the object in the business component storage layer by the attribute information of the objects set by the user, and performing comparison, execution or calculation according to logic defined in script language; and an environment abstraction layer for controlling information technology (IT) infrastructure including an operating system of a computer, a central processing unit (CPU), a memory, a database management system (DBMS), network and display apparatus.

A magnetic glass dry erase board including a glass sheet, a metal sheet and an adhesive layer. The glass sheet has an inner surface and an outer surface. The metal sheet has an inner surface and an outer surface. The adhesive layer substantially covers the inner surface of the glass sheet and the outer surface of the metal sheet to retain the glass sheet in a stationary relationship with respect to the metal sheet. The adhesive layer also enhances a strength of the glass sheet and protects persons from injury if the glass sheet is broken by retaining glass pieces on the metal sheet.

A low gloss dry-erasable multilayer composite comprises a first layer having a dry-erasable outer surface and a second layer having a microroughened surface. Preferably, the second layer is microroughened by cure-induced surface wrinkling. The first layer preferably comprises a polymer comprising at least one pendant fluoroalkoxyalkyl functionality. Methods of making low gloss dry erasable multilayer composites are also provided. New dry-erasable coating compositions comprising certain amine resin crosslinking agents are also provided.

A glass dry-erase board. The glass dry-erase board has a smooth transparent glass writing surface. One embodiment utilizes tempered glass sheet, which provides the writing surface and has a non-specular and light blocking rear surface treatment and attached white plastic sheet on the back side of the glass sheet. The glass dry-erase board may include additional features such as wall mounts or one or more utensil trays.

Tackable and markable dry erase display boards which have no frame and which may be die cut from moldable foam material capable of receiving and holding mounting pins and substantially closing after a pin is withdrawn. Such boards are light weight and can be mounted on substantially any desired surface without hardware or tools, and can be fabricated in substantially any desired color. The boards may have convenient means for holding accessories such as an eraser or marking implement.

A communication article and system comprising a writing member having a dry erasable front surface and a projection member is disclosed. The projection member includes an asymmetric optical diffuser that scatters light in a first direction with a first viewing angle A_H, and in a second direction orthogonal to the first direction with a second viewing angle A_V. The ratio A_H/A_V is at least about 2.

An electronic whiteboard system has light emitting elements mounted on ultrasonic wave receivers of a signal processor, and an imager device for imaging the light emitting elements and a projection test pattern of a projector to acquire a positional relationship between the light emitting elements and an image projected from the projector. The electronic whiteboard system can facilitate initialization of the coordinates with the acquired positional relationship.

A blackboard eraser including a cube having two semi-cylindrical grooves symmetrically arranged in a longitudinal direction therein, and a central brush atop an elevated surface formed between the two grooves. A longitudinal groove is defined underneath each of the send-cylindrical grooves, and equal-length side brushes, which are affixed to an inner surface of a lid, are respectively positioned in the longitudinal grooves. Two grooves are arranged adjacent to each end of the semi-cylindrical grooves, which provide for a shaft affixed to each end of a roller to dispose therein. The brushes and the rollers form the eraser, which are enclosed within a closed chamber between the lid and the two semi-cylindrical grooves. When erasing chalk dust from a blackboard, the chalk dust sticks to the rollers and is carried to the side brushes. The side brushes then wipes the dust, which falls into the closed chamber.

A teaching center is provided with first and second upstanding frame sections separated by two or more lateral connectors to form a generally “H” shaped frame. The second upstanding frame section is vertically oriented and the first upstanding frame section is inclined from the vertical to permit the use of storybooks, chart paper or other items that lean back. The teaching center is provided with one or more shelves or storage devices between the first and second upstanding frame sections.