Disclosed is a digital pen that tracks the user's writing and provides useful feedback based on the user's writing. In one embodiment, the pen may provide feedback when the user has written a misspelled word, invalid mathematical expression, or any noncompliant expression. The pen may also provide feedback relating to the user's handwriting. The feedback may be visual, auditory, or tactile, and may be realtime or delayed. Statistics relating to the user's performance may be tracked, uploaded to external devices, and shared with others. This allows the user and interested parties to track the user's progress over time. The disclosed pen will be useful in educational settings.

An information input device has a determination portion, a detection portion, and a switching portion. The detection portion includes two areas that plural coils are arranged along a plane. The two areas switch between a folded state facing the areas each other and a two-page spread state not facing the areas each other. When an induced current is not detected in the coils of the two areas in the continuous reception state in which the induced current of the coils can be detected, the determination portion determines that the detection portion is in the two-page spread state. When the induced current is detected in the coils of the two areas in the continuous reception state, the determination portion determines that the detection portion is in the folded state, and the switching portion switches the state of the detection portion from a normal state to a power saving state.

An information input device has a determination portion, a detection portion, and a switching portion. The detection portion includes two areas that plural coils are arranged along a plane. The two areas switch between a folded state facing the areas each other and a two-page spread state not facing the areas each other. When an induced current is not detected in the coils of the two areas in the continuous reception state in which the induced current of the coils can be detected, the determination portion determines that the detection portion is in the two-page spread state. When the induced current is detected in the coils of the two areas in the continuous reception state, the determination portion determines that the detection portion is in the folded state, and the switching portion switches the state of the detection portion from a normal state to a power saving state.

A multifunctional pen includes a penholder and a refill provided in the penholder. A clip is provided on the penholder. The penholder comprises an upper penholder and a lower penholder hinged to each other. The lower penholder may bend and tilt toward the upper penholder through a hinged joint. The clip is arranged on the upper penholder and across the upper penholder and the lower penholder. A tail end of the clip is raised and a pressing raised strips for a mobile phone is provided thereon.

A disposable marker for use in preparation for medical procedures. The marker is made of plastic or such similar material that does not show up on an x-ray monitor. The marker includes one or more metallic elements that have an elongated aspect disposed in proximity to the marker tip. As such, a clinician may introduce the marker into an x-ray field and view it in space by following the metallic element an x-ray monitor.

The present invention relates generally to the field of writing utensil accessories. More specifically, the present invention relates to a color changing protective cover for a writing instruments, such as a pen, pencil, marker, etc. The uniquely designed and initially transparent cover changes color when harmful pathogens, germs, bacteria, or viruses are detected on the surface of the cover to prevent an individual from using a writing implement with a contaminated surface/cover. The invention also ensures that each writing instrument is clean before use, thereby greatly reducing the possibility of the individual contracting germs, pathogens, viruses, bacteria from using the writing instrument.

The present invention relates generally to the field of writing utensil accessories. More specifically, the present invention relates to a color changing protective cover for a writing instruments, such as a pen, pencil, marker, etc. The uniquely designed and initially transparent cover changes color when harmful pathogens, germs, bacteria, or viruses are detected on the surface of the cover to prevent an individual from using a writing implement with a contaminated surface/cover. The invention also ensures that each writing instrument is clean before use, thereby greatly reducing the possibility of the individual contracting germs, pathogens, viruses, bacteria from using the writing instrument.

Manual device (200), comprising a casing (212) having a first distal end (12-1) and a second distal end (12-2), a first head (16A) and a second head (16B) that are movable axially between a use position and a retracted position, and a single mechanism (214) that is configured to bring the first head (16A) and the second head (16B) from the retracted position to the use position and vice versa, the mechanism (214) comprising at least one carriage (214A1, 214A2) having at least one head selected from the first head and the second head (16A, 16B) and a single spring (214B).

Manual device (200), comprising a casing (212) having a first distal end (12-1) and a second distal end (12-2), a first head (16A) and a second head (16B) that are movable axially between a use position and a retracted position, and a single mechanism (214) that is configured to bring the first head (16A) and the second head (16B) from the retracted position to the use position and vice versa, the mechanism (214) comprising at least one carriage (214A1, 214A2) having at least one head selected from the first head and the second head (16A, 16B) and a single spring (214B).

A writing device with input unit includes a case and an input unit receiving in the case. The input unit includes a flexible main body, a sensing electrode layer and a protection layer. The flexible main body has a first face and a second face. The sensing electrode layer has a first sensing electrode and a second sensing electrode disposed on the second face of the flexible main body. The protection layer is correspondingly disposed on the second face of the flexible main body to cover the sensing electrode layer. The writing device with input unit has small volume and is lightweight so that a user can conveniently carry, store and use the writing device with input unit.