Browse Prior Art Database

Wearable PC WOV (Wake on Voice) PM (Power Management)

IP.com Disclosure Number: IPCOM000015028D
Original Publication Date: 2001-Oct-03
Included in the Prior Art Database: 2003-Jun-20
Document File: 3 page(s) / 71K

Publishing Venue

IBM

Abstract

ABSTRACT There are several systems like a wearable computer which can be controlled by Voice through the microphone. These systems often include the internal DSP (Digital Signal Processor) which recognizes and dictates the Voice. When the system states in SLEEP/Suspend mode or Power OFF/Hibernation mode, in order to recognize the Voice command for 'Wake up' or 'Power On', the DSP have to observe the Voice and keep on being powered at all times. As the DSP is always powered on, the battery is consumed and will be exhausted at last.

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Wearable PC WOV (Wake on Voice) PM (Power Management)

ABSTRACT

There are several systems like a wearable computer which can be controlled by
Voice through the microphone.

These systems often include the internal DSP (Digital Signal Processor) which
recognizes and dictates the Voice.

When the system states in SLEEP/Suspend mode or Power OFF/Hibernation mode,
in order to recognize the Voice command for 'Wake up' or 'Power On',
the DSP have to observe the Voice and keep on being powered at all times.
As the DSP is always powered on, the battery is consumed and will be exhausted
at last.

This disclosure describes how 'Wake up' or 'Power On' Voice is recognized with
little power dissipation.

Detail Explanation

In order to recognize and dictate the Voice 'Wake up' or 'Power On' (1)
through microphone (2),
Pre-AMP(3) , CODEC (4), DSP(5) and ROM (6) always have to be kept on powering
(Fig 1).

Therefore the battery (7) is consumed and will be exhausted at last.

1B A TTER Y

7

VO ICE

Pow er-O n

W ake-up

DC/DC CO NVERTER

3

6

+

-

PRE-A M P

VC C

FIG 1

VC C

DSP

RO M

CODEC

4

2SIG NAL

Pow er-O n

Wake-up

5

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BATTERY

BATTERY

7

REG URATO R

15

1011 13

7

1

The PRE-WORD is input from the microphone and amplified by the pre-amp and the
voice wave form is rectified. The signal is filtered by the integrator
according to the length and the volume of the PRE-WORD (101).

The output signal is compared with the value which is calculated for the
appropriate PRE-WORD in a...