Abstract: An ECG electrode is provided. The ECG electrode includes an electrode substrate and a doped graphite-like carbon film located on an outer surface of the electrode substrate. The doped graphite-like carbon film includes graphite-like carbon, and first nano-crystals and second nano-crystals that are embedded in the graphite-like carbon. The first nano-crystal includes a weak carbon-bonding element. The weak carbon-bonding element has a part that exists in a form of a metallic elementary substance. The first nano-crystal includes a columnar structure. The columnar structure extends in a thickness direction of the doped graphite-like carbon film. The second nano-crystal includes a strong carbon-bonding element. The strong carbon-bonding element bonds with the carbon element in the graphite-like carbon through a chemical bond. The second nano-crystals are distributed between adjacent and spaced columnar structures.

Abstract: A portable device to detect the spin of table tennis ball is invented. The device helps a user to figure out the spin of a coming table tennis ball during a table tennis game. It is composed of a camera lens to acquire sequential images, an image processing chip to extract features of the table tennis ball and to calculate the direction and strength of the spin, and a mechanism to inform the user about the spin through certain methods. One kind of the product design for the device, is to embed an integrated module into a pair of normal glasses. The integrated module consists of a mini camera lens, an image processing chip, a button battery and switch. The output of the module controls the LED lights located inside the frame of the glasses. For example of 8 points LED, the positions of 0, 3, 6, and 9 o'clock correspond to top spin, right spin, back spin, and left spin, respectively (refer FIG. 1 through FIG. 4).

Abstract: The security class or burglary resistant capability of a safe is determined by the safe's weakest parts: combinations lock, key lock, keyboard, LCD screen, card reader, fingerprint scanner, etc (referred as weak parts below). The results of an attack to the safe include opening safe door, digging holes on safe door or body, or dysfunction of the above weak parts. The corresponding consequences are: Objects deposited inside the safe are stolen or destroyed. Even if those objects stay intact, the safe owner is no longer able to operate the safe. A new design method about safe is disclosed in this invention. The new safe has no weak parts on its surface. It's obvious that weak parts are easier to destroy than safe door and body, which is why they are called weak parts. For safes without weak parts on their surface, these weak parts (in user's hand or inside safe) are not so easy to be attacked on. The GSA class or UL Certification is improved for the new safe.

Abstract: A portable display system for an electronic device is invented, which consists of a portable display and a pair of eye glasses. The size of the display is small for easy carrying, for example, the display can fit in to a hand. The resolution of the display is changeable, for example, it can be lower than one hundred by one hundred for normal cell phone usage. It can be as high as thousands by thousands to show HDTV, movie, and web browsing. When the display is in its low resolution mode, naked eyes can see the display content without problem. When the display is in its high resolution mode, the pair of glasses, which enlarges the display content a few times, is needed. There may be, depending of application, multiple resolution modes between the lowest and the highest. The display system may allow interactive input from users. For example, a user is surfing the Internet using a cell phone, via the pair of glasses. When the user wants to follow a link, the user's finger taps the link on the display.

Abstract: The size of an electronic display is increased when display panels are slide-out from a stack beneath the top display panel. The slide-out display panels and the top display panel form one larger rigid and smooth display. The slide-out display panels can be slide back into the stack under the top display panel. A device bearing the above display works with different sizes of the display (caused by display panels slide-out and slide-in). Display panels not slide-out may not have power in order to save energy.