Image scanning and video printing apparatus and method of controlling the same

A method of controlling the image scanning and video printing apparatus, said method comprising:

• selecting one of video printing and scanning printing;
• performing a video printing function if said video printing is selected;
• determining a one line transferring distance and a data sampling position according to a capacity of a picture memory of said apparatus and a size of a material to be scanned if said scanning printing is selected;
• performing a processing function including scanning said material with a charge coupled device in response to said one line transferring distance to generate a scanned video signal, sampling said scanned video signal according to said data sampling position to generate a sampled video signal, processing said sampled video signal to generate a processed signal, converting said processed signal to generate video data of one horizontal line, and storing said video data of one horizontal line in said picture memory;
• checking whether video data of one frame has been stored in said picture memory;
• transferring said charge coupled device by said one line transferring distance and repeating said processing function if less than one frame has been stored in said picture memory;
• and
• monitoring and printing the video data when said video data of one frame has been stored in said picture memory.

An image scanning and video printing apparatus, comprising:

• image scanning means for generating scanned video signals by scanning a given material;
• video printing means coupled to receive external video signals via an external video signal input terminal and responsive to said scanned video signals, for printing an image represented by one of said scanned video signals and said external video signals, said video printing means comprising;
• video decoder means for generating external red, green and blue video signals by decoding said external video signals;
• converter means for converting one of said external red, green and blue video signals and said scanned video signals into selected red, green and blue video signals, said scanned video signals being received as scanned red, green and blue video signals from said image scanning means;
• memory means for storing said selected red, green and blue video data to be read out as stored red, green and blue video data;
• printing means for printing an image represented by said stored red, green and blue video data;
• multiplexer means for multiplexing said stored red, green, and blue video data by alternately providing blue, green, and red components to generate multiplexed blue, green, and red video data;
• and
• line memory means for receiving and temporarily storing said multiplexed blue, green, and red video data, and for providing the temporarily stored multiplexed blue, green, and red video data to said printing means to compensate for a different processing speed of said printing means;
• and
• system control for controlling and synchronizing said image scanning means and said video printing means.

A method for printing images from a scanner and a video signal input terminal, said method comprising:

• selecting between functions of video printing and scanning printing;
• performing video printing if the selected function is said video printing;
• selecting a size of a material to be scanned in response to selection of said scanning printing;
• determining a one line transferring distance and a data sampling position in response to the selected size, a picture memory capacity and an area of an image to be printed in response to selection of said scanning printing;
• scanning said material with a charge-coupled device in accordance with said one line transferring distance to generate a scanned video signal, sampling said scanned video signal in accordance with said data sampling position to generate a sampled video signal, processing said sampled video signal to generate a processed video signal on a line-by-line basis to be stored on said picture memory;
• checking whether the processed video signal of one frame has been stored in said picture memory;
• transferring said charge-coupled device by said one line transferring distance in accordance with the selected size of said material;
• and
• printing the processed video signal when the processed video signal of said one frame has been stored on said picture memory.

An image scanning and video printing apparatus, comprising:

• image scanning means for generating scanned video signals by scanning a given material in response to scanning synchronizing signals;
• system control means for generating said scanning synchronizing signals;
• and for generating video synchronization signals indicative of said scanning;
• decoder means for decoding received composite video signals to generate decoded video signals;
• picture memory means for storing one of said scanned video signals and said decoded video signals as stored video signals in response to write control signals, and for reading out said stored video signals in response to read control signals;
• memory control means for generating said write control signals in response to received synchronizing signals contained in said received composite video signals when a video printer function is selected, for generating said write control signals in response to said video synchronization signals when a scanning printer function is selected, and for generating said read control signals in response a printing signal;
• and
• printing means for generating said printing signal, and for printing image represented by said stored video signals read out from said picture memory means.