STV0681
Detailed Features
2.2.4 Piezo buzzer
An on-chip pulse width modulator (PWM) generates buzzer sounds to signal certain events. The
distinctive sounds are characteristic of the type of events indicated by the buzzer, as described here
below.
1
Camera has been ‘Woken up’ from standby mode (either by the user pressing a button, by re-
connecting the power source, or by connecting a USB/RS232 connection).
2
3
4
Camera has ‘gone to sleep’ that is moved into standby mode. Pictures are retained in memory.
Picture was taken successfully once the user had pressed the capture button.
Picture has NOT been taken when the user pressed the capture button because of insufficient
light, or because the exposure control was not ready following a rapid change of lighting in the
scene.
5
Picture has NOT been taken when the user pressed the capture button because the picture
counter had reached the maximum number of images. The user has the chance to reset the
counter if desired.
6
7
End of continuous capture in un-tethered ‘Continuous’ mode due to full memory.
Self-timer activated, count down has started.
2.2.5 Custom sounds
A camera which includes STV0681 and audio playback hardware can have a set of custom sounds
downloaded from a PC application. A different sound can be associated with each of the following
functions:
Table 2: List of custom sound functions
Power On
Power Off
Good picture
Bad picture
(Normally due to insufficient light)
Memory full
Self timer #1
Self timer #2
Low resolution
High resolution
Picture delete
Sound delete
Continuous clip delete
Clear memory
Confirm action
Low power
Flashgun ON
Flashgun OFF
Flashgun Trigger
ADCS 7283313C
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STMICROELECTRONICS [ ST ]
