PNF CO., LTD. Patent applications |
Patent application number | Title | Published |
20160103507 | ULTRASONIC WAVE RECEIVER AND POSITION INFORMATION INPUT APPARATUS COMPRISING SAME - Disclosed are an ultrasonic wave receiver and a position information input apparatus comprising same. A signal generator and the ultrasonic wave receiver of the present invention both comprise a rechargeable battery therein whereby same are driven, and are coupled to a main body part when position information input is finished. The main body part comprises a large-capacity battery supplied and charged with a charging current from an external electronic device. Also, the main body part charges the signal generator and the ultrasonic wave receiver by supplying same with a charging current from the large-capacity battery when the signal generator and the ultrasonic wave receiver are coupled to the main body part. Accordingly, the position information input apparatus can easily be carried by coupling the signal generator and the ultrasonic wave receiver to main body part, and can maintain the signal generator and the ultrasonic wave receiver in charged state. | 04-14-2016 |
20150138166 | POSITION INFORMATION INPUT SYSTEM - Disclosed are a position information input system capable of coupling a signal generating device and a signal receiving device to each other. Firstly, a coupling unit is formed at a signal receiving device. Under such configuration, a signal generating device and the signal receiving device can be coupled to each other once the signal generating device is coupled to the coupling unit. This can enhance portability and a storage characteristic of the position information input system. Secondly, a contact power switch is installed in the coupling unit. Under such configuration, if a user separates the signal generating device from the signal receiving device for input of position information, the contact power switch is automatically turned on. As a result, the signal receiving device is automatically turned on. On the contrary, if a user, who has completed the input of position information, couples the signal generating device to the signal receiving device, the contact power switch is automatically turned off. As a result, the signal generating device is automatically turned off. This can solve the conventional user's inconvenience, i.e., turning on a power switch for input of position information, and tuning off the power switch upon completion of the input of position information. This can enhance a user's convenience. | 05-21-2015 |
20150022505 | POSITION MEASURING DEVICE AND POSITION INFORMATION INPUT SYSTEM USING SAME - Disclosed are a position measuring device capable of precisely measuring a position of an electronic pen tip, and a position information inputting system using the same. The position measuring device includes: a position measuring unit configured to measure a position of a tip of an electronic pen using a reference signal and ultrasonic signals, and configured to input position information on the electronic pen tip to an electronic device; a housing where the position measuring unit is installed; and a coupling means having one end connected to the housing, and another end coupled to the electronic device, so as to couple the housing to one side of the electronic device. Under such configuration, the position measuring device can enhance reliability by precisely measuring positions of characters or symbols to be input to an electronic device having a screen, and can enhance a user's convenience by reducing time taken to input characters or symbols by preventing an erroneous operation. | 01-22-2015 |
20150015492 | KEYBOARD ENABLING INPUTTING OF POSITION INFORMATION AND KEYBOARD SYSTEM COMPRISING SAME - Disclosed are a position information inputting keyboard and a keyboard system including the same. A reference signal receiving unit and ultrasonic signal receiving units are installed on a side surface of a keyboard having thereon a keypad. | 01-15-2015 |
20110018844 | METHOD AND SYSTEM FOR INPUTTING DOCUMENT INFORMATION - Provided are document information input method and system. When a user writes a document by using an input pen at a working site, a position of the input pen used by the user is measured in real time and position information is transmitted through a wired or wireless communication network to a document information input apparatus. The document information input apparatus can input contents written by the user or figures or characters drawn by the user in a computerization system in real time, so that it is possible to improve work efficiency of document task. | 01-27-2011 |
20100281984 | METHOD AND APPARATUS FOR MEASURING POSITION OF THE OBJECT USING MICROPHONE - Provided is a method and device for measuring a position of an ultrasonic generating device for generating ultra-sonic signals, and inputting information by using position measurement values of the ultrasonic generating device. Accordingly, a plurality of broadband microphones that can be used as general microphones provided to an electronic device are used in a case where information is input by using an ultrasonic generating device. In this case, a position of the ultrasonic generating device is measured by extracting an ultrasonic signal generated by the ultrasonic generating device from signals received by the broadband microphones, and information is input by using the position of the ultrasonic generating device and a trajectory of the moving ultra-sonic generating device. Therefore, the inconvenience of a related art in that a plurality of ultrasonic sensors prepared additionally have to be mounted to an electronic device or a frame to which the plurality of the ultrasonic sensors are mounted has to be connected whenever information is input by using ultrasonic signals, particularly, a problem in that the plurality of ultrasonic sensors have to be prepared to perform information inputting using the ultrasonic waves by a portable electronic device, can be solved. | 11-11-2010 |