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CHAPTER 2. TECHNICAL DESCRIPTION
2.2.2 Picture Processing
1) The drive pulse of the CCD sensor is created by both clock from DSP and TG that is operated by
sync. signal.
The picture signal by the drive pulse is output from CCD sensor.
The output signal of the CCD picture is converted to the signal processing and the digital data by
the CDS and A/D converter, and is sent to the DSP.
2) The DSP circuit performs the following signal processing.
• Processes the picture data (using the SDRAM).
• Writes and reads the picture data to and from the CF card.
• Outputs the picture data to the CPU.
• Outputs analog video signal to the LCD and VIDEO OUT.
3) The video signal that is supplied form the DSP is controlled by the LCD driver and is displayed
on the LCD. The video amplifier is activated when the AV jack is inserted to the video jack and
drives the video signal in 75
Ω
.
2.2.3 Audio Processing (Recording and Playback Functions)
1) During recording of moving picture
• Audio signal of microphone is converted to digital data by CPU and is recorded.
2) During playback, it is converted back to analog audio signal by CPU and is output from speaker
and line terminal.
Summary of Contents for PowerShot G3
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Page 35: ...1 29 3 2 6 dimensional Diagram 69 9 2 75 43 5 1 71 122 0 4 80 71 7 2 82 73 9 2 91 121 0 4 76 ...
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Page 135: ...PowerShot G3 Pg2 INTERNAL PARTS SECTION 1 See Pg3 See Pg5 8 8 7 1 2 3 4 9 7 10 8 11 5 6 N S ...
Page 139: ...PowerShot G3 Pg4 TOP COVER SECTION 17 15 16 1 3 7 2 4 5 6 8 15 9 10 11 12 13 14 ...
Page 141: ...PowerShot G3 Pg5 EVF UNIT SECTION 1 10 2 5 3 7 12 11 12 4 6 8 13 9 a b a d c b d c ...
Page 143: ...PowerShot G3 Pg6 BATTERY BOX UNIT SECTION 8 4 8 2 3 7 1 5 8 8 8 6 ...
Page 145: ...PowerShot G3 Pg7 Fuse 2 1 DC DC CONVERTER PCB ASS Y ...
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Page 170: ...C CANON INC 2002 01 NOVEMBER 2002 3 4 HV MODULE UNIT ...
Page 171: ...C CANON INC 2002 01 NOVEMBER 2002 3 5 TOP MODULE UNIT ...
Page 172: ...C CANON INC 2002 01 NOVEMBER 2002 3 6 LCD PCB ASS Y ...
Page 173: ...C CANON INC 2002 01 NOVEMBER 2002 3 7 OPTICAL FLX ...
Page 174: ...C CANON INC 2002 01 NOVEMBER 2002 3 8 EF FLX ...
Page 175: ...C CANON INC 2002 01 NOVEMBER 2002 3 9 R_EN FLX ...
Page 178: ...PowerShot G3 Auto Focus Chart 1 ...
Page 179: ...Dimensions 1 107 1mm 79 1mm Dimensions 1 ...
Page 180: ...PowerShot G3 Auto Focus Chart 2 ...
Page 181: ...Dimensions 2 278 46mm 207 66mm ...
Page 182: ...PowerShot G3 Auto Focus Chart 1 ...
Page 183: ...Dimensions 1 107 1mm 79 1mm Dimensions 1 ...
Page 184: ...PowerShot G3 Auto Focus Chart 2 ...
Page 185: ...Dimensions 2 278 46mm 207 66mm ...