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US 4,811,385 AGranted
Data communication apparatus which can selectively store data or not, according to communication line status
AssigneeCanon Kabushiki Kaisha
InventorTsunehiro Watanabe
Life of this patent
Estimating the term…
Abstract
A data communication apparatus which automatically communicates data, and has a memory for storing data to be communicated. The apparatus discriminates the status (e.g., busy or not busy) of a communication line, and determines on the basis of that discrimination whether data is to be stored in the memory or not.
Claims20
A data communication apparatus comprising:
- means for reading an original image;
- communication means for transmitting image data on a communication line;
- memory means for storing image data to be transmitted;
- first detection means for detecting whether or not said memory means is capable of storing the image data on the basis of a memory capacity of said memory means and an amount of the stored image data;
- second detection means for detecting whether or not a destination station is ready to receive in accordance with a signal from the communication line;
- third detection means for detecting whether the image data is stored in said memory means or not;
- and
- control means for controlling transmission of image data in accordance with detection by said first and second detection means, wherein said control means is adapted to select between (1) real time transmission of the image data read by said reading means and (2) storage of the image data in said memory means to transmit the stored image data subsequently in accordance with detection by said first and second detection means;
- and
- wherein said control means is adapted to transmit the image data stored in said memory means on the basis of detection by said second and third detection means that the destination station is ready to receive and that the image data is stored in said memory means, respectively.
7 more elements
A data communication apparatus comprising
- means for reading an original image;
- communication means for transmitting image data on a communication line;
- memory means for storing therein image data to be transmitted;
- detection means for detecting whether a destination station is ready to receive or not, in accordance with a signal from the line;
- control means for controlling transmission of image data in accordance with detection by said detection means, wherein said control means is adapted to transmit the image data read by said reading means in real time when the destination station is ready to receive, and, when the destination station is not ready to receive, said control means is adapted to store the image data in said memory means and to transmit the stored image data when the destination station subsequently becomes ready to receive, and
- wherein said reading means includes setting means for setting an original image, and reads the original image set in said setting means;
- and
- discrimination means for discriminating whether the data of the original image set in said setting means is storable or not, wherein said control means controls said memory means to store the data set in said setting means provided said discrimination means discriminates that that data is storable.
5 more elements
Dependencies are inferred from the claim text.