A whiteboard film (100) according to an embodiment of the present invention includes: a diffuse reflection layer (40) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection layer (40) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction. A whiteboard (100a) according to an embodiment of the present invention includes: a diffuse reflection plate (40a) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection plate (40a) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction.

A whiteboard film (100) according to an embodiment of the present invention includes: a diffuse reflection layer (40) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection layer (40) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction. A whiteboard (100a) according to an embodiment of the present invention includes: a diffuse reflection plate (40a) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection plate (40a) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction.

The writable screen of the present invention includes a base layer and a resin layer provided on the base layer. The resin layer has a surface gloss of 1% to 20% and a surface pencil hardness of 5H to 2B. The present invention can improve the erasability with a whiteboard eraser for writing made with a whiteboard marker and also can prevent or reduce the occurrence of a hot spot and glare.

The writable screen of the present invention includes a base layer and a resin layer provided on the base layer. The resin layer has a surface gloss of 1% to 20% and a surface pencil hardness of 5H to 2B. The present invention can improve the erasability with a whiteboard eraser for writing made with a whiteboard marker and also can prevent or reduce the occurrence of a hot spot and glare.

A weighted lap pad comprising a base having a body-conforming configuration adapted to be placed across a lap of a seated user, the base having a plurality of channels having weights permanently enclosed within respective channels, the weights having a cumulative weight of greater than 2 pounds and a transparent window positioned at a surface of the base and in part defining a device pocket configured to receive a paper device or electronic touch screen device. The transparent window and associated pocket allowing a user to experience visual and multi-media sensation while simultaneously receiving tactile sensation of the weighted pad. The electronic device also allows for a variety of user control and sensory feedback options.

A weighted lap pad comprising a base having a body-conforming configuration adapted to be placed across a lap of a seated user, the base having a plurality of channels having weights permanently enclosed within respective channels, the weights having a cumulative weight of greater than 2 pounds and a transparent window positioned at a surface of the base and in part defining a device pocket configured to receive a paper device or electronic touch screen device. The transparent window and associated pocket allowing a user to experience visual and multi-media sensation while simultaneously receiving tactile sensation of the weighted pad. The electronic device also allows for a variety of user control and sensory feedback options.

A re-usable writing surface reusably and removably coupled to exterior surfaces is disclosed. The re-usable writing surface may include a porous layer. The porous layer may define one or more cells. The re-usable writing surface may further include a non-adhesive coating applied to a side of the porous layer. The re-usable writing surface may further include a writable layer coupled to a different side of the porous layer. The writable layer may be configured to allow a user to draft and erase content. The non-adhesive coating can enable the re-useable writing surface to reusably and removably couple to exterior surfaces.

A re-usable writing surface reusably and removably coupled to exterior surfaces is disclosed. The re-usable writing surface may include a porous layer. The porous layer may define one or more cells. The re-usable writing surface may further include a non-adhesive coating applied to a side of the porous layer. The re-usable writing surface may further include a writable layer coupled to a different side of the porous layer. The writable layer may be configured to allow a user to draft and erase content. The non-adhesive coating can enable the re-useable writing surface to reusably and removably couple to exterior surfaces.

One embodiment is an apparatus for capturing marker stroke locations, including erasures. The marker includes a transmitter of acoustic pulses and an erasure cap detector that detects when a removable erasure cap is attached to the marker. A receiver includes two or more sensors to sense the acoustic pulses, the receiver operable to determine and track marker locations. When the removable erasure cap is attached to the marker, the marker locations are erasures, and when there is no erasure cap attached, the marker locations being tracked capture strokes. Another embodiment is a method of capturing marker stroke locations, including erasures, using the marker, the removable erasure cap for erasures, and the receiver.

One embodiment is an apparatus for capturing marker stroke locations, including erasures. The marker includes a transmitter of acoustic pulses and an erasure cap detector that detects when a removable erasure cap is attached to the marker. A receiver includes two or more sensors to sense the acoustic pulses, the receiver operable to determine and track marker locations. When the removable erasure cap is attached to the marker, the marker locations are erasures, and when there is no erasure cap attached, the marker locations being tracked capture strokes. Another embodiment is a method of capturing marker stroke locations, including erasures, using the marker, the removable erasure cap for erasures, and the receiver.