Abstract: Some implementations described herein include systems and techniques for fabricating a stacked die product. The systems and techniques include using a supporting fill mixture that includes a combination of types of composite particulates in a lateral gap region of a stack of semiconductor substrates and along a perimeter region of the stack of semiconductor substrates. One type of composite particulate included in the combination may be a relatively smaller size and include a smooth surface, allowing the composite particulate to ingress deep into the lateral gap region. Properties of the supporting fill mixture including the combination of types of composite particulates may control thermally induced stresses during downstream manufacturing to reduce a likelihood of defects in the supporting fill mixture and/or the stack of semiconductor substrates.

Abstract: A method for restoring a booted system divides a flash memory in a device using an embedded Linux system into four blocks and saves a boot loader, a Linux kernel, a mini root file system and a user root file system of the embedded Linux system separately into each block and sets the block for storing the user root file system as a read/write block, and the rest of the blocks are set as read-only blocks. The mini root file system installs a detect program capable of detecting whether or not the user root file system is damaged, such that when the device is booted, the detect program will detect whether or not the user root file system is damaged first to determine to mount the user root file system or the mini root file system to the embedded Linux system.

Abstract: Disclosed is a program encryption method, which sets a key in an application program, and the application program is designed by a designer who uses an embedded Linux system as a platform, and the key is writeable but not readable by the application program, but a Linux kernel of the embedded Linux system can read the key and then code and compile the application program into an execute file. A file header is added in the execute file of the application program according to the key and a predefined conversion table, and contents of the file header performs a computation to disrupt contents of the execute file so as to protect the application program from being copied by users, and thus designers can feel ease to use the embedded Linux system to develop application programs.

Abstract: The present invention discloses an electronic device with an embedded Linux application system, and the electronic device comprises a microprocessor for executing a Linux operating system core and a root file system, and the electronic device installs the Linux operating system core and the root file system, such that when a user wants to develop an embedded Linux application program, the user just needs to design the required application program only. If there is a problem occurred when using the electronic device, the user just needs to check the application program without the need of considering the Linux operating system core and the root file system, and thus the present invention can save lots of time and costs for users.