Drop detection systems for portable information processing apparatus
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G11B-015/04
G11B-019/04
G11B-023/02
G11B-023/03
출원번호
US-0941047
(2001-08-28)
발명자
/ 주소
Mutoh, Hiroshi
출원인 / 주소
Fujitsu Limited
대리인 / 주소
Greer, Burns & Crain, Ltd.
인용정보
피인용 횟수 :
13인용 특허 :
3
초록▼
A portable information processing apparatus 10 which is a lap top type has a housing 11 with a hard disk drive 14. At the bottom side 11b of the housing 11, a first touch sensor 20 is provided adjacent a corner 22 and a second touch sensor 21 is provided adjacent a corner 24 which is at a diagonal s
A portable information processing apparatus 10 which is a lap top type has a housing 11 with a hard disk drive 14. At the bottom side 11b of the housing 11, a first touch sensor 20 is provided adjacent a corner 22 and a second touch sensor 21 is provided adjacent a corner 24 which is at a diagonal side. Once the portable information processing apparatus 10 leaves a table, output signals of the respective touch sensors 20 and 21 vary precisely. By comparing the output signals of the respective touch sensors 20 and 21 with a true value table memorized in a memory, it is decided whether the portable information processing apparatus 10 has started dropping. If the portable information processing apparatus 10 starts dropping, the hard disk drive 14 enters the withdrawal mode.
대표청구항▼
A portable information processing apparatus 10 which is a lap top type has a housing 11 with a hard disk drive 14. At the bottom side 11b of the housing 11, a first touch sensor 20 is provided adjacent a corner 22 and a second touch sensor 21 is provided adjacent a corner 24 which is at a diagonal s
A portable information processing apparatus 10 which is a lap top type has a housing 11 with a hard disk drive 14. At the bottom side 11b of the housing 11, a first touch sensor 20 is provided adjacent a corner 22 and a second touch sensor 21 is provided adjacent a corner 24 which is at a diagonal side. Once the portable information processing apparatus 10 leaves a table, output signals of the respective touch sensors 20 and 21 vary precisely. By comparing the output signals of the respective touch sensors 20 and 21 with a true value table memorized in a memory, it is decided whether the portable information processing apparatus 10 has started dropping. If the portable information processing apparatus 10 starts dropping, the hard disk drive 14 enters the withdrawal mode. mation lightwave (1) to be focused on the center (72) of the front face (71) of first lightwave fiber (7). 2. The improved method of focusing information lightwave (1) to the front face (71) of the first lightwave fiber (7), in accordance with claim 1 comprising the further steps of: providing a computer/regulator (18) for receiving the error signal Sr and generating regulating signals Sf, So for the fine alignment mechanism (3) and the optomechanical receiver means (19) including the lens (4) respectively; inputing the error signal Sr to the input of the computer/regulator (18); and, generating the regulating signals Sf, So for the fine adjustment of the fine alignment mechanism (3) and for the optomechanical receiver means (19) including the lens (4), respectively. 3. The improved method of focusing information lightwave (1) to the front face (71) of the first lightwave fiber (7) in accordance with claim 1 comprising the further steps of: providing a computer/regulator (18) for receiving the error signal Sr and generating regulating signals Su, Sf, So for the lens (4), for the fine adjustment of the fine alignment mechanism (3) and for the optomechanical receiver means (19) including the lens (4), respectively; inputing the error signal Sr to the input of the computer/regulator (18); and, generating the regulating signals Su, Sf, So for the lens (4), for the fine adjustment of the fine alignment mechanism (3) and for the optomechanical receiver means (19) including the lens (4), respectively. 4. The improved method of focusing information lightwave (1) to the front face (71) of the first lightwave fiber (7) in accordance with claim 1 comprising the further steps of: providing a control unit (14) for generating a regulating signal Sp for the fiber deflection means (5) from the error signal Sr; focusing the lightwave (7) as a light spot (22) by means of the optomechanical receiver means (19) and with the aid of the lens (4) approximately on the center (72) of the first lightwave fiber (7) in the fiber deflection means (5), if the control unit (14) is idle responsive to the error signal Sr; and, generating a movement of the light spot (22) around, the center (72) of the first lightwave fiber (7) when the control unit (14) becomes active through the fiber deflection means (5) responsive to the error signal Sr. 5. The improved method of focusing information lightwave (1) to the front face (71) of the first lightwave fiber (7) in accordance with claim 4 comprising the further steps of: generating a movement of the light spot (22) around the center (72) of the first lightwave fiber (7) when the control unit (14) becomes active through the fiber deflection means (5) to describes a high-frequency approximately circular movement around the center (72) of the first lightwave fiber (7) by means of the deflection means (5) to cause an intensity modulation, if the circular movement does not take place exactly concentrically around the center (72); and, inputting intensity modulation to the computer regulator (18) with the error signal Sr to cause any resulting deviation error between the light spot (22) and the center (72) of the first lightwave fiber (7) to be minimized. 6. The improved method of focusing information lightwave (1) to the front face (71) of the first lightwave fiber (7), in accordance with claim 4 comprising the further step of: providing a nutator for the deflection means (5). 7. The improved method of focusing information lightwave (1) to the front face (71) of the first lightwave fiber (7) in accordance with claim 4 comprising the further steps of: generating the error signal Sr from detectors (10, 11) outputting respective signals Sa, Sb via a respective amplifier (15, 16); and, inputting the respective signals Sa, Sb via the respective amplifiers (15, 16) to a differential amplifier (17) to generate the signal Sr. 8. An apparatus for generating an error signal in connection wi
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