Electronic still camera
First Claim
1. An electronic camera comprising:
- photographing means for photographing a photographed object and outputting image data;
image data coding means for coding the image data;
means for recording the coded image data to a recording medium;
means for converting a sound to an electric signal;
means for coding sound data converted to the electric signal;
means for recording the coded sound data to the recording medium;
means for storing file header information of the image data or the sound data to a memory in advance; and
direct memory transfer means;
said file header information being recorded to the recording medium by a direct memory transfer operation executed by said direct memory transfer means which does not access a central processing means.
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Accused Products
Abstract
In an electronic still camera, image data obtained by a camera image pickup section are transmitted to an image data compression/extension circuit and are coded by this circuit. The coded image data are recorded to a FIFO circuit. The image data are then DMA-transferred to a memory card by a DMA controller within a memory card interface (I/F) and are recorded to the memory card. When the image data are regenerated, the image data are DMA-transferred in a reverse direction. In another camera, image data are outputted from a charge coupled device (CCD) and are converted to a digital signal. Sound data are outputted from a microphone and are converted to a digital signal. File header information is constructed by the image and sound data and is stored to a RAM of a memory card interface in advance. The file header information is recorded to a memory card by a direct memory access (DMA) control section.
13 Citations
5 Claims
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1. An electronic camera comprising:
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photographing means for photographing a photographed object and outputting image data;
image data coding means for coding the image data;
means for recording the coded image data to a recording medium;
means for converting a sound to an electric signal;
means for coding sound data converted to the electric signal;
means for recording the coded sound data to the recording medium;
means for storing file header information of the image data or the sound data to a memory in advance; and
direct memory transfer means;
said file header information being recorded to the recording medium by a direct memory transfer operation executed by said direct memory transfer means which does not access a central processing means. - View Dependent Claims (2, 3)
a directory entry number is used in control of said control information file.
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4. An electronic camera comprising:
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a photographing device configured to photograph a photographed object and output image data;
a first coding device configured to code the image data;
a first recording device configured to record the coded image data to a memory card;
a converter configured to convert a sound to an electric signal;
a second coding device configured to code sound data converted to the electric signal;
a second recording device configured to record the coded sound data to the memory card;
a controller configured to store file header information of the image data or the sound data to a memory in advance; and
a direct memory transfer controller;
said file header information being recorded to the memory card by a direct memory transfer operation executed by said direct memory transfer controller which does not access a central processing means.
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5. A method for operating a camera comprising the steps of:
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photographing a photographed object and outputting image data;
coding the image data;
recording the coded image data to a recording medium;
converting a sound to an electric signal;
coding sound data converted to the electric signal;
recording the coded sound data to the recording medium;
storing file header information of the image data or the sound data to a memory in advance; and
wherein in said step of storing the file header information the file header information is recorded to the recording medium by a direct memory transfer operation which does not access a central processing means.
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Specification