IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0948099
(2001-09-07)
|
발명자
/ 주소 |
- Casebolt, Mark W.
- Rensberger, Gary
- Bathiche, Steven N.
- Abulet, Mihai
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
119 인용 특허 :
68 |
초록
▼
Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a "scoop" capacitor formed by a conductor and a surrounding ground plane. The conductor may be a plate provided in the form of an adhesive label printed with conductive ink. Charge is transferred between
Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a "scoop" capacitor formed by a conductor and a surrounding ground plane. The conductor may be a plate provided in the form of an adhesive label printed with conductive ink. Charge is transferred between the "scoop" capacitor and a relatively large "bucket" capacitor, and a voltage of the bucket capacitor is applied to an input threshold switch. A state transition (e.g., from low to high, or high to low) of the input threshold switch is detected and a value (TouchVal) indicative of a number of cycles of charge transfer required to reach the state transition is determined. The presence or absence of an object or body portion in close proximity to or contact with a device can be determined by comparing TouchVal with a predetermined threshold value (TouchOff). TouchOff can be adjusted to take into account environmentally induced (non-touch related) changes in the capacitance of the scoop capacitor. Power management is provided in a user operated data input device utilizing proximity sensing and switching between three or more power states. Switching between the power states occurs based upon the presence or absence of input activity, and an operation instrumentality (e.g., a hand) in close proximity to or contact with the device. In an optical surface tracking cursor control device embodiment, switching to and from a BEACON state, which provides a reduced flash rate of a surface illuminating light source, is carried out based upon a detected presence or absence of a trackable surface.
대표청구항
▼
Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a "scoop" capacitor formed by a conductor and a surrounding ground plane. The conductor may be a plate provided in the form of an adhesive label printed with conductive ink. Charge is transferred between
Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a "scoop" capacitor formed by a conductor and a surrounding ground plane. The conductor may be a plate provided in the form of an adhesive label printed with conductive ink. Charge is transferred between the "scoop" capacitor and a relatively large "bucket" capacitor, and a voltage of the bucket capacitor is applied to an input threshold switch. A state transition (e.g., from low to high, or high to low) of the input threshold switch is detected and a value (TouchVal) indicative of a number of cycles of charge transfer required to reach the state transition is determined. The presence or absence of an object or body portion in close proximity to or contact with a device can be determined by comparing TouchVal with a predetermined threshold value (TouchOff). TouchOff can be adjusted to take into account environmentally induced (non-touch related) changes in the capacitance of the scoop capacitor. Power management is provided in a user operated data input device utilizing proximity sensing and switching between three or more power states. Switching between the power states occurs based upon the presence or absence of input activity, and an operation instrumentality (e.g., a hand) in close proximity to or contact with the device. In an optical surface tracking cursor control device embodiment, switching to and from a BEACON state, which provides a reduced flash rate of a surface illuminating light source, is carried out based upon a detected presence or absence of a trackable surface. 031, 1998. Klein, "Neuron-specific transduction in the rat septohippocampal or nigrostriatal pathway by recombinant adeno-associated virus vectors," Exper. Neurol. 150:183-194, 1998. Lewin et al., "Ribozyme rescue of photoreceptor cells in a transgenic rat model of autosomal dominant retinitis pigmentosa," Nat. Med. 4:967-971, 1998. Li et al., "Role for highly regulated rep gene expression in adeno-associated virus vector production," J. Virol. 71:5236-5243, 1997. Maxwell et al., "Improved production of recombinant AAV by transient transfection of NB324K cells using electroporation," J. Virol. Methods, 63:129-136, 1997. Neyts et al., "Sulfated polymers inhibit the interaction of human cytomegalovirus with cell surface heparan sulfate," Virology 189:48-58, 1992. Peel, "Efficient transduction of green fluorescent protein in spinal cord neurons using adeno-associated virus vectors containing cell type-specific promoters," Gene Ther. 4:16-24, 1997. Salvetti, "Factors influencing recombinant adeno-associated virus production," Hum. Gene Ther. 9:695-706, 1998. Sasagawa et al., "Synthesis and assembly of virus-like particles of human papillomaviruses type 6 and type 16 in fission yeast Scizosaccharomyces pombe," Virology, 206:126-135, 1995. Snyder et al., "Production of recombinant adeno-associated viral vectors," In: Current Protocols in Human Genetics (eds. Dracopoli et al.), John Wiley, New York, 1996. Summerford and Samulski., "Membrane-associated heparan sulfate proteoglycan is a receptor for adeno-associated virus type 2 virions," J. Virol. 72:1438-1445, 1998. Tamayose et al., "A new strategy for large-scale preparation of high-titer recombinant adeno-associated virus by using packaging cell lines and sulfonated cellulose column chromatography," Hum. Gene Ther. 7:507-513, 1996. van der Burg et al., "No porcine islet loss during density gradient purification in a novel iodixanol in University of Wisconsin solution,"Transplant. Proc., 30:362-363, 1998. Xiao et al., "Production of high-titer recombinant adeno-associated virus vectors in the absence of helper Adenovirus," J. Virol. 72:2224-2232, 1998.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.