Abstract: Embodiments of the invention disclose a data transmitting method, a server and a client.

Abstract: The present application provides a docking station and a POS machine using the same. The docking station includes a housing, a mainboard mounted inside the housing, a display device mounted on the housing, and a support configured to detachably support a card swiping device; the display device is mounted on the housing, the support is fixed on the housing, a data plug for connecting with the card swiping device is mounted inside the support, and the data plug is electrically connected with the mainboard. Such that the function of the card swiping device can be expanded and the docking station of the card swiping device is formed. By using the support to support the card swiping device, the occupied space can be reduced, and the use is convenient.

Abstract: A touch screen security protection structure including a touch screen, a display screen, and a circuit board, a first signal ribbon cable, and a second signal ribbon cable. The first signal ribbon cable and the second signal ribbon cable are respectively connected with the circuit board via zebra stripes, the first signal ribbon cable and the second signal ribbon cable are provided with protection winding wires, and the protection winding wires are electrically connected with the zebra stripes via contacts. When an attacker lifts the touch screen and the display screen by cutting, the first signal ribbon cable and the second signal ribbon cable are dislocated from the zebra stripes, the protection winding wires are disconnected from the zebra stripes, anti-tampering detection signals then trigger the security response mechanism to erase the sensitive data information from the electronic components of the circuit board.

Abstract: A password input method that includes calling a user space in an internal memory to obtain a password input request and to send the password input request to a security chip connected with the internal memory; calling the user space to receive random keyboard data generated by the security chip according to the password input request, and displaying a randomly arranged keyboard according to the random keyboard data; and calling a kernel space in the internal memory to obtain password coordinate data input through the keyboard and to send the password coordinate data to the security chip, so that the security chip generates a password plaintext of user input according to the password coordinate data and the random keyboard data.

Abstract: A method for upgrading POS terminal software, including: starting a POS terminal; detecting whether the POS terminal is connected to a mobile storage device; detecting whether there is a valid software upgrade package file in the mobile storage device if the POS terminal is connected to the mobile storage device; displaying a software upgrade management interface including a name of the valid software upgrade package file on the POS terminal if there is a valid software upgrade package file in the mobile storage device; obtaining a software upgrade package file selected through the software upgrade management interface; performing an upgrade according to the selected software upgrade package file; and restarting the POS terminal if the upgrade is successful.

Abstract: A method of running an application program across systems is proposed, the method comprises loading a target application program; applying for a memory space on a current operating system for the target application program; modifying an address of a global variable and an address of an absolute jump instruction in the target application program according to an address of the applied memory space to adapt to the memory space of the current operating system; obtaining a SWI instruction of the target application program; and redirecting the SWI instruction to an instruction of calling the current operating system.

Abstract: A method of operating a functional module across platforms is proposed, the method includes: obtaining a source code of the functional module, the source code of the functional module being a standard C code; compiling the source code to generate a plurality of intermediate files; link processing the plurality of intermediate files to generate an object file; loading the object file; and allocating a memory space for a bytecode in the object file and dividing the bytecode into a code segment and a data segment running in the memory space. The method implements isolation between the functional module and the platform during the whole process, which can implement of operating a functional module cross platforms without any modification of the functional module, so that the operation is simple. Further, a device of operating a functional module across platforms is also proposed.

Abstract: The present invention is applicable to the field of POS machines, and provides a magnetic head protection frame used in a POS machine, a card swiping module using the magnetic head protection frame, and a POS machine using the card swiping module. The magnetic head protection frame comprises a support frame, the support frame is strip-shaped, and the support frame defines a first opening exposing the magnetic head; a circuit board is mounted on an outside surface of the support frame, the circuit board is arranged along the whole length direction of the support frame, and the circuit board avoids a position corresponding to the first opening; connecting wires are connected on the circuit board.

Abstract: The present invention is applicable to the field of POS machines, and provides a peep-proof input keyboard and a POS machine using the peep-proof input keyboard. The peep-proof input keyboard comprises a circuit board, a keyboard, and a peep-proof cover, the keyboard includes a plurality of keys configured to input information, a portion of the circuit board corresponding to the keys is provided with a first connecting finger configured for the pressing operations of the keys, the circuit board is provided with a second connecting finger configured to control the keyboard to work and be turned off, and a bottom of the peep-proof cover is provided with at least one support post configured to abut against the second connecting finger so as to enable the keyboard to work.

Abstract: A keyboard safety protection device for protecting a point of sale (POS) device keyboard area from being attacked includes: a protection layer, a metal dome, and a keyboard printed circuit board, wherein a key gold finger and a safety processor are arranged on the keyboard PCB, the protection layer is composed of a layer of PVDF film and a first and second silver slurries, the first and the second silver slurries are coated on the surface of the PVDF film, the surfaces of the first and second silver slurries are provided with a first and second thin film layers respectively, the first and second silver slurries are electrically connected with the key gold finger, and the first and second silver slurries are electrically connected with the safety processor to form a safety detection circuit through the keyboard printed circuit board and the safety processor.

Abstract: A NAND flash storage chip correcting method is provided in the present invention. The method can correct one or two bits errors and find a number of bits errors according to the row and column XOR value and Hash value of each page written into the spare area, comparing the data stored in the data area and the computed Hash value of data area to correct one or two bits of errors, thus ensures the accuracy and integrity of the data stored in the NAND Flash chip and reduces the risk of crash of the file system.

Abstract: The present invention is available for the field of electronic circuit protection, and provides a security cover for enclosing a protective area on the protected PCB and protecting the components in this area. The security cover comprises a flexible PCB that is folded with a receiving space and an opening in a side in the space. The flexible PCB is covered on the protective area of the protected PCB and encloses the components in the protective area. The flexible PCB triggers the related circuits to remove or destroy the information on the components in this protective area in case of physical attack. The present invention is to enclose the key components on PCB via the flexible PCB with the receiving space so as to prevent the key components from being attacked.