Abstract:
A wireless signal transmission device and a sound system having the same are disclosed. The wireless signal transmission device is used for connecting to an audio amplifier, wherein the audio amplifier includes at least one connecting hole. The wireless signal transmission device includes a chassis, a base board, an antenna, a control module, and at least one signal transmission port. The antenna is used for emitting or receiving an audio signal. The control module is used for controlling the transmission or reception of the audio signal. The at least one signal transmission port is used for connecting to the at least one connecting hole of the audio amplifier directly for transmitting the audio signal, wherein the chassis is able to be supported by the at least one connecting hole according to a connection between the at least one signal transmission port and the at least one connecting hole.
Abstract:
A handwriting input device includes a housing and a nib selectively exposed from a bottom side of the housing or hidden in the housing. The device further includes a pressure sensor, a motion sensor, and a microcontroller. The pressure sensor generates pressure signals when the nib is depressed. The motion sensor senses movement of the device. The microcontroller records the sensed movement upon receiving the pressure signals, and processes the recorded movement to obtain track signals of handwritten information when the duration of not receiving the pressure signals exceeds a predetermined time interval. The track signals of handwritten information are then transmitted to an external electronic device communicating with the device to become handwriting shown on a display of the external electronic device.
Abstract:
A laser projector includes a housing, a light source arranged within the housing, and a vibration module arranged within the housing to cause the light source to vibrate in a predetermined range.
Abstract:
A filter includes: a container; at least one barrier, an input device and an output device. The at least one barrier divide the space of the container into at least two resonant cavities. Each resonant cavity has a harmonic oscillator disposed therein. The harmonic oscillators includes a supporter and a carbon nanotube structure disposed on a surface of the supporter.
Abstract:
A handwriting input device includes a hollow charger and a handwriting pen. The charger includes a number of first contacts and a connecting unit. The handwriting pen includes a number of second contacts, a communication unit, a light source to emit light, an optical sensor, and a microcontroller. When the charger is connected to an external electronic device through the connecting unit, and the handwriting pen is inserted into the charger to cause each second contact to be contacted with one first contact, the handwriting pen can obtain power from the external electronic device. When the charger is moved, together with the handwriting pen being charged, the optical sensor converts the light reflected from a reflective surface under the charger into the electrical signals. The microcontroller generates and transmits the cursor control signals or the track control signals to the external electronic device.
Abstract:
A handwriting input device includes a vibration sensor, a motion sensor, a communication unit, and a microcontroller. The vibration sensor is tuned to a range of frequencies that includes the expected vibration frequency generated by a finger wearing the device when the finger writes on a surface. The motion sensor senses movement of the device. The microcontroller generates cursor control signals according to the movement sensed by the motion sensor and generates handwriting activation signals when a frequency of vibration detected by the vibration sensor falls within the range of frequencies, and transmits the cursor control signals and the handwriting activation signals to an external electronic device communicating with the device through the communication unit to signal the external electronic device to control movement of a displayed cursor and displays the track of the movement of the displayed cursor.
Abstract:
A laser projector includes a housing, a light source arranged within the housing, and a vibration module arranged within the housing to cause the light source to vibrate in a predetermined range.
Abstract:
A touch sensitive electronic device includes an LCD panel and a touch panel arranged over the LCD panel. The touch panel includes a first touch area and a second touch area, and the first touch area and the second touch area have different touch sensitivity.
Abstract:
A head-mounted display device having an interactive function is provided. The head-mounted display device includes a play unit, a display unit and a sensor unit. The play unit plays a portion of an image on the display unit. The display unit displays the image being played. The sensor unit senses a movement and a movement direction of the head-mounted display device. The play unit further adjusts the displayed portion of the image being played according the movement and the movement direction of the head-mounted display device.
Abstract:
An electronic device includes a touch screen, a storage unit storing a plurality of electronic files and relationships between display contacts and functions, and a processing unit. The touch screen produces contact signals in response to user's display contacts. The processing unit detects the user's display contacts according to the contact signals, determines a function corresponding to the user's display contact according to the relationships, and determines the function is a data transmitting function when the display contact is a pre-defined corresponding contact. The processing unit further determines an electronic file displayed on the touch screen and transmits the determined electronic file, when determining the function is the data transmitting function.