Abstract: An external data-input device for a portable electronic device is provided. The external data-input device includes a speech receiving and recognizing device detachably connected with the electronic device for sending a controlling signal to the portable electronic device when the speech receiving and recognizing device receives a first sound speech signal, and an input device detachably connected to the speech receiving and recognizing device and the portable electronic device for storing the controlling signal in the speech receiving and recognizing device when the input device is connected to the speech receiving and recognizing device.

Abstract: A keycap assembly for using in a keyboard is provided. The keycap assembly includes a keycap having a lever fitting slot disposed in an inner wall thereof, and a lever having a curved portion in contact with the inner wall of the keycap for forming a downward slanting angle with respect to the inner wall of the keycap when the lever is assembled with the lever fitting slot of the keycap, thereby causing the keycap assembly to be assembled with the keyboard easily.

Abstract: A keyboard assembly includes a keyboard body and an interface pivotally arranged on a pivotal axis of the keyboard body and being able to rotate laterally. The pivotal axis has an inclined angle with respect to a vertical line of the interface. The keyboard body is composed of a first panel and a second panel pivotally connected to the first panel. Each of the first panel and the second panel has a receiving space in a symmetrical arrangement to accommodate the interface.

Abstract: A collapsible keyboard comprises at least one keyboard module, and each keyboard module has a plurality of keyswitches arranged in array pattern. At least one membrane circuit is provided to connect the plurality of keyswitches. When the keyboard is in an operation state, each keyswitch having a predetermined separation with adjacent keyswitch, and the separation is the same as that in a standard keyboard. To shrink the keyboard, the plurality of keyswitches can be arranged in a collapsed state to reduce the transverse size of the keyboard, the lengthwise size of the keyboard, or both sizes.

Abstract: An ergonomic scrolling device comprises a shell and a rolling wheel. The rolling wheel is pivotally connected to the shell. The shell has an axial shaft perpendicular to the axis of the rolling wheel and on an external surface of the shell. The shell is rotatable around the axial shaft such that the shell can be rotated leftward or rightward. The rolling wheel is also rotated with the shell to a specific angle for providing more convenience to user.

Abstract: A folding keyboard includes a fixed key module and one or more mobile key modules. The key modules are joined together by links between them. Two ends of the links between the key modules are joined at asymmetric positions. The mobile key module can turn 180 degrees to lie against the fixed key module. The folding keyboard is capable of being frontally folded, showing the whole arrangement of keys after unfolding, and being used immediately after unfolded. Moreover, the folding keyboard can be relatively shrunk by way of compression of the key units to reduce the thickness, and can be designed to be a triply-folded or quadruply-folded structure.

Abstract: A foldable keyboard includes a clamping stage, and a retaining stage. The foldable keyboard has an accommodation region on rear edge thereof. A strip-shaped rail is formed in front of the accommodation region and a guiding groove is formed on an opposite side of the accommodation region. The clamping stage is laterally movable on the accommodation region. The clamping stage has a pair of bumps on a rear side thereof and each bump has a pivotal hole on an inner side thereof such that the clamping stage can be pivotally connected to the retaining stage. The retaining stage has a socket electrically connected to an internal circuit of the foldable keyboard and a portable electronic device can be inserted into the socket.

Abstract: A keyboard having a protective lid comprises a keyboard body, a linkage board and a lid. The keyboard body has an accommodation space on rear side thereof and the accommodation space has two pivotal holes on two lateral sides thereof. The linkage board has a front end pivotally connected to the keyboard body. The linkage board has a rear end pivotally connected to a front end of the lid such that the lid can be swung to a backside of the keyboard body and functioned as a mount of the keyboard body and the keyboard body is inclined to a specific angle.

Abstract: A collapsible keyboard comprises at least one keyboard module, and each keyboard module has a plurality of keyswitches arranged in array pattern. At least one membrane circuit is provided to connect the plurality of keyswitches. When the keyboard is in an operation state, each keyswitch having a predetermined separation with adjacent keyswitch, and the separation is the same as that in a standard keyboard. To shrink the keyboard, the plurality of keyswitches can be arranged in a collapsed state to reduce the transverse size of the keyboard, the lengthwise size of the keyboard, or both sizes.

Abstract: A keyboard assembly comprises a keyboard body and an interface pivotally arranged on a pivotal axis of the keyboard body and being able to rotate laterally. The pivotal axis has an inclined angle with respect to a vertical line of the interface. The keyboard body is composed of a first panel and a second panel pivotally connected to the first panel. Each of the first panel and the second panel has a receiving space in symmetrical arrangement to accommodate the interface.

Abstract: A keyboard having a protective lid comprises a keyboard body, a linkage board and a lid. The keyboard body has an accommodation space on rear side thereof and the accommodation space has two pivotal holes on two lateral sides thereof. The linkage board has a front end pivotally connected to the keyboard body. The linkage board has a rear end pivotally connected to a front end of the lid such that the lid can be swung to a backside of the keyboard body and functioned as a mount of the keyboard body and the keyboard body is inclined to a specific angle.

Abstract: A movable clamping device for foldable keyboard comprises a clamping stage, and a retaining stage. The foldable keyboard has an accommodation region on rear side thereof, a strip-shaped rail in front of the accommodation region and a guiding groove on one side thereof adjacent to the accommodation region. The clamping stage is laterally movable in the accommodation region. The clamping stage has a pair of bumps on rear side thereof and each bump has a pivotal hole on inner side thereof such that the clamping stage can be pivotally connected to the retaining stage. The retaining stage has a socket electrically connected to the internal circuit of the keyboard and a portable electronic device can be inserted into the socket.

Abstract: An external data-input device for a portable electronic device is provided. The external data-input device includes a speech receiving and recognizing device detachably connected with the electronic device for sending a controlling signal to the portable electronic device when the speech receiving and recognizing device receives a first sound speech signal, and an input device detachably connected to the speech receiving and recognizing device and the portable electronic device for storing the controlling signal in the speech receiving and recognizing device when the input device is connected to the speech receiving and recognizing device.

Abstract: The present invention provides a folding keyboard comprising a fixed key module and more than one mobile key modules. The key modules are joined together by links between them. Two ends of the links between the key modules are joined at asymmetric positions. The mobile key module can turn 180 degrees to burrow against the fixed key module to form a folding keyboard capable of being frontally folded, showing a whole arrangement of keys after unfolded, and being used immediately after unfolded. Moreover, the folding keyboard of the present invention can be relatively shrunk to reduce the thickness, and can be designed to be a triply-folded or quadruply-folded structure.

Abstract: An ergonomic scrolling device comprises a shell and a rolling wheel. The rolling wheel is pivotally connected to the shell. The shell has an axial shaft perpendicular to the axis of the rolling wheel and on external surface of the shell. The shell is rotatable around the axial shaft such that the shell can be rotated leftward or rightward. The rolling wheel is also rotated as the axial shaft as pivot to a specific angle for providing more convenience to user.

Abstract: A clamping structure for foldable apparatus comprises an arc-shaped elastic wire; and two linear elastic wires bent vertically from two ends of the arc-shaped elastic wire. The two linear elastic wires are pivotally arranged within two rounded holes formed on the two separated main bodies of the foldable apparatus, respectively. Each rounded hole has a distance with the pivotal shaft such that the clamping structure provides a torque to the separated main bodies of the foldable apparatus. Therefore, the foldable apparatus can be unfolded to 0° and 180°.

Abstract: A keycap assembly for using in a keyboard is provided. The keycap assembly includes a keycap having a lever fitting slot disposed in an inner wall thereof, and a lever having a curved portion in contact with the inner wall of the keycap for forming a downward slanting angle with respect to the inner wall of the keycap when the lever is assembled with the lever fitting slot of the keycap, thereby causing the keycap assembly to be assembled with the keyboard easily.