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Section 

Title 

Page

(1) Circuit Structure ..................................................................................................................................... 3
(2) Power supply ......................................................................................................................................... 6

(1) Connection of power supply .................................................................................................................. 7
(2) Starting the HI microprocessor (HV-01 board) ..................................................................................... 8
(3) Operating voltage .................................................................................................................................. 9
(4) Output of operating voltage ................................................................................................................... 10

(1) Outline ..................................................................................................................................................... 13
(2) Charging circuit ....................................................................................................................................... 13

(1) Standby Mode ........................................................................................................................................ 15
(2) Shooting ................................................................................................................................................. 23
(3) Playback ................................................................................................................................................ 31

(1) Outline .................................................................................................................................................... 33
(2) Data Transmission Time ........................................................................................................................ 34
(3) IrDA Input/Output Circuit ....................................................................................................................... 35
(4) Input/Output Circuit of Connection Cable ............................................................................................. 36
(5) Communication Operations ................................................................................................................... 37

1.

JPEG ...................................................................................................................................................... 40

2.

Picture MD Format ................................................................................................................................ 40

(1) Image data format ................................................................................................................................. 40
(2) Functions available with one DSC-F1 ................................................................................................... 40
(3) Functions not available with one DSC-F1 ............................................................................................. 41
3.

Structure of Album Data File ................................................................................................................. 41

(1) PIC_CAM files ....................................................................................................................................... 41
(2) Album directory (From PIC00000) ........................................................................................................ 41

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The circuit operations of DSC-F1 are controlled by the following three microprocessors.

1

First microprocessor to start when the power supply is connected.
Mainly controls the power supply circuit, key input detection.
Remains ON as long as the power supply is connected to backup the clock.
When key inputs are detected, it sends serial data to the main microprocessor.

2

Performs control of operations such as shooting and playback, and processing of communications with the personal

computer. Starts when the unit starts operating. (OFF when the unit is in the stop state since no power is supplied.)

Due to the large volume of the program of the main microprocessor, the operation program is stored in the external

ROM (IC605 or IC606). The service mode program is also stored in the ROM.)

3

Microprocessor which mainly controls the CCD, camera section, etc. Like the main microprocessor, starts when the unit

starts operating.

Controls the camera state by communicating with the main microprocessor by serial data every frame (1/30 seconds).

Block which shoots and corrects images.

4

CCD which reads images. Part integrated with the lens block.

5

Converts RGB data read from the CCD to digital data, and performs camera signal processing. Performs detection of AE

and AWB.

6

Controls the iris (diaphragm) of the lens using the commands of the camera microprocessor.

During shooting, processes the image signals input from the camera, and displays on the LCD.
During playback, processes recorded image data input from the data compression and extension section, and displays on the

LCD.

7

During shooting, writes image data read from the CCD in the 4 Mbit memory, and outputs to the video circuit directly.

Also converts to the NTSC/PAL signal.

During playback, writes the compressed image data stored in the image memory (32 Mbit) in the 4M bit memory, and

converts to the NTSC/PAL signal, and outputs.

8

Converts Y/C signals into RGB signals, and displays on the LCD. After performing analog processing of the LPF, etc.,

converts to the video composite signal, and outputs from the video terminal.

During shooting, compresses image data, and records in the image memory.
During playback, extends image data recorded in the image memory, and sends to the LCD output section.

9

During shooting, JPEG-compresses image data read into the memory controller. The compressed data is stored

temporarily in the RAM (4 Mbit), and sent to the image memory (0) next.

During playback, the compressed image data recorded in the image memory (0) is JPEG-extended.

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0

32 Mbit (4MB) memory recording the compressed image data. In addition to the image data, also records various

adjustment values of the unit.

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Generates various voltages and charges the litium ion battery. Controlled by the HI microprocessor.

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charges the voltage for flash and adjusts the flash light amount according to the reflected light automatically.

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Driver circuit which inputs/outputs image data from IrDA and RS232C. Outputs the image data in the MD picture

format.

Because commands inside the signals used are unique to SONY, data can be transmitted and received only by the

specified models (DSC-F1, DPP-M55, etc.). Even if the data is received by the PC, image data cannot be processed.