VV6501 datasheet(16/44 Pages) STMICROELECTRONICS

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Camera Modes of Operation

STV0681

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ADCS 7283313C

3.2

Description of modes

3.2.1

Standby mode (untethered) and Wake-up

On power-up, or wake-up from untethered standby mode, (i.e. by pressing the Mode button), the

camera beeps twice. The LCD briefly indicates the camera resolution either ‘Hr.’ for high resolution

(80 CIF or 26 VGA images - using 64Mbit memory) or ‘Lr’ for low resolution (322 QCIF or 107 VGA

images - using 64Mbit memory) and then displays the number of pictures which may be taken.

Please note that in low resolution mode, although there can be up to 322 images available, the LCD

counter only goes up to 99, it reports 99 until there are less than 99 images left.

The camera goes back to standby mode after 30 seconds of inactivity, LED1 turns off and the LCD

goes blank. This is also achieved by pressing the mode switch during more than 2 seconds.

3.2.2

Normal mode

Press the shutter button to take a picture. The camera beeps. A high pitched beep indicates that the

picture was taken successfully and the counter decrements (if there are less than 99 images left to

take). A low beep indicates insufficient light to take a picture. A series of beeps indicates that the

camera is full.

Stored pictures can be uploaded to a PC at any time, whether or not the camera is full. Plugging the

USB connector into the camera causes it to reset and issues a double beep but all stored pictures

remain. When the USB connector is unplugged the camera goes to sleep. When connected to the

PC, the camera can still be used in the normal way.

Note:

When flashgun is enabled, the camera always takes a picture, with or without sufficient light.

3.2.3

Audio record - Ar

This mode is available with audio record hardware fitted.

Pressing the shutter button within 5 seconds causes the camera to start recording for as long as the

shutter button is pressed down. If the shutter button is not pressed within 5 seconds, the camera

reverts to normal picture taking mode. Whilst recording, the LCD display flashes ‘Ar’. If the

recording stops because the memory is full, the ‘memory full’ audio tone is sounded and the display

stops flashing and displays ‘00’. The audio data is digitized and stored in SDRAM.

3.2.4

Audio Playback - AP

This mode is available with audio playback hardware fitted.

Pressing the shutter button within 5 seconds causes the camera to play back the most recent audio

recording. If the shutter button is not pressed within 5 seconds the camera reverts to normal picture

taking mode. Whilst playing, the LCD display flashes ‘AP’.

Once in Audio Playback mode, repeated presses of the shutter button steps the camera through

each of the audio recordings in the camera (most recent first). Keeping the shutter button pressed

down also allows to cycle through the audio recordings. Pressing the mode button during playback

stops the audio clip.

Note:

Minimum audio recording length is set to 0.5 seconds.

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