Method for obtaining font map, character display device and system, electronic signature token
AssigneeTendyron Corporation
InventorDongsheng Li
Life of this patent
Estimating the term…
Abstract
A method for obtaining a font map, a character display device and system, and an electronic signature token are provided. The method comprises: receiving a font map sent from a font map storage device with a character display device; calculating a check code of the font map sent from the font map storage device with the character display device; comparing the calculated check code of the font map with a locally stored check code corresponding to the font map by the character display device, and if the two check codes are consistent, determining by the character display device that the font map sent from the font map storage device is correct.
Claims19
A method for obtaining a font map, comprising:
- receiving a font map sent from a font map storage device by an electronic signature token;
- calculating a check code of the font map sent from the font map storage device by the electronic signature token;
- comparing the calculated check code of the font map with a locally stored check code corresponding to the font map by the electronic signature token, and if the two check codes are consistent, determining by the electronic signature token that the font map sent from the font map storage device is correct;
- and
- displaying by the electronic signature token a character corresponding to the font map sent from the font map storage device after determining that the font map sent from the font map storage device is correct.
An electronic signature token, comprising a processor circuitry and a memory, the memory comprising stored program units comprising:
- a receiving unit, configured to receive a font map sent from a font map storage device;
- a calculating unit, configured to calculate a check code of the font map received by the receiving unit;
- a comparing unit, configured to compare the check code of the font map calculated by the calculating unit with a locally stored check code corresponding to the font map, and to determine the font map sent from the font map storage device is correct when the two check codes are consistent;
- and
- a display unit, configured to display a character corresponding to the font map received by the receiving unit after the comparing unit determines the font map sent from the font map storage device is correct.
An electronic signature token, comprising:
- a non-transitory font map storage device, configured to store a font library comprising font maps corresponding to characters and to send a font map;
- and
- a character display screen, configured to receive the font map sent from the font map storage device, to calculate a check code of the received font map, to compare the calculated check code of font map with a locally stored check code corresponding to the font map, to determine the font map sent from the font map storage device is correct and to display a character corresponding to the font map if the two check codes are consistent.
An electronic signature token, comprising:
- a font map processing circuitry, configured to receive a font map sent from a font map storage device, to calculate a check code of the received font map, to compare the calculated check code of font map with a locally stored check code corresponding to the font map and to determine the font map sent from the font map storage device is correct if the two check codes are consistent;
- and
- a display screen, configured to display a character corresponding to the font map received by the font map processing circuit after the font map processing circuit determines the font map sent from the font map storage device is correct.
Dependencies are inferred from the claim text.