Sound-activated wake-up device for electronic input devices having a sleep-mode
First Claim
Patent Images
1. An input device comprising:
- a housing; and
a sound detecting device within the housing, wherein the input device includes a power-saving mode that cuts-off power to components of the input device if the input device is inactive for a predetermined period of time, and wherein the sound detecting device is arranged to detect a sound of a user seeking to operate the input device and to cause generation of a wake-up signal for ending said power-saving mode when said sound of the user is detected, wherein said sound of the user is a sound of the user touching the input device.
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Abstract
A sound-activated wake-up device generates a wake-up signal for ending a sleep-mode in response to the sound of friction between an operating platform and an input device, or the sound of touching of the input device by the user. The wake-up device includes a sound detecting unit and a signal amplifying/comparing unit, and sound filtering structures and/or circuitry so as to prevent ambient sounds from activating the wake-up device.
77 Citations
19 Claims
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1. An input device comprising:
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a housing; and
a sound detecting device within the housing, wherein the input device includes a power-saving mode that cuts-off power to components of the input device if the input device is inactive for a predetermined period of time, and wherein the sound detecting device is arranged to detect a sound of a user seeking to operate the input device and to cause generation of a wake-up signal for ending said power-saving mode when said sound of the user is detected, wherein said sound of the user is a sound of the user touching the input device. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
a micro control unit having said power-saving mode; and
a signal amplifying/comparing unit connected to the sound detecting device for receiving signals representing detected sounds and supplying a wake-up signal to the micro control unit when said sound of the user is detected.
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5. An input device as claimed in claim 4, wherein the amplifying/comparing unit comprises a transistor having a base connected to the sound detecting unit and one of a collector or emitter connected to the master control unit.
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6. An input device as claimed in claim 4, wherein the amplifying/comparing unit device includes a differential amplifier for detecting an output signal of said sound detecting unit.
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7. An input device as claimed in claim 1, wherein the sound detecting device includes a sound filter for filtering sounds associated with background noise.
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8. An input device as claimed in claim 7, wherein said sound filter is a bandpass filter.
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9. An input device as claimed in claim 1, wherein said housing includes sound-absorbing materials.
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10. An input device as claimed in claim 1, wherein said input device is a wireless input device.
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11. An input device as claimed in claim 1, wherein said input device is a wireless pointing device.
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2. An input device comprising:
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a housing; and
a sound detecting device within the housing, wherein the input device includes a power-saving mode that cuts-off power to components of the input device if the input device is inactive for a predetermined period of time, and wherein the sound detecting device is arranged to detect a sound of a user seeking to operate the input device and to cause generation of a wake-up signal for ending said power-saving mode when said sound of the user is detected, wherein said device is arranged to be used on a platform, and said sound of the user is a sound of friction between the input device and the platform. - View Dependent Claims (3, 12, 13, 14, 15, 16, 17, 18, 19)
a micro control unit having said power-saving mode; and
a signal amplifying/comparing unit connected to the sound detecting device for receiving signals representing detected sounds and supplying a wake-up signal to the micro control unit when said sound of the user is detected.
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13. An input device as claimed in claim 12, wherein the amplifying/comparing unit comprises a transistor having a base connected to the sound detecting unit and one of a collector or emitter connected to the master control unit.
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14. An input device as claimed in claim 12, wherein the amplifying/comparing unit device includes a differential amplifier for detecting an output signal of said sound detecting unit.
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15. An input device as claimed in claim 2, wherein the sound detecting device includes a sound filter for filtering sounds associated with background noise.
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16. An input device as claimed in claim 15, wherein said sound filter is a bandpass filter.
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17. An input device as claimed in claim 2, wherein said housing includes sound-absorbing materials.
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18. An input device as claimed in claim 2, wherein said input device is a wireless input device.
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19. An input device as claimed in claim 2, wherein said input device is a wireless pointing device.
Specification