Hon Hai Precision Industry Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

Song Ma

Li-Ren Fu

Jun-Hui Wang

Wei Pang

Cheng-Fei Weng

Wu Zhou

A hard disk device includes a main body and a temperature alarm circuit. The temperature alarm circuit includes a temperature detecting module detecting an internal temperature of the hard disk device, a control chip electrically coupled to the temperature detecting module to receive the internal temperature and configured to compare the internal temperature with a first preset temperature and a second preset temperature, a voltage pull-up module electrically coupled to the control chip, and an alarm module electrically coupled to the voltage pull-up module. The control chip outputs a control signal to the voltage pull-up module, the voltage pull-up module pulls up voltage of the control signal, and transmits the voltage pulled up control signal to the alarm module, and the alarm module alarms, in event that the internal temperature is higher than or equal to the first preset temperature or less than or equal to the second preset temperature.

Hard disk device and temperature alarm circuit of hard disk device

A secure switch module to allow only authorized keyholders to power on an electronic device includes a lock, a key matching the lock, and a power switch. The lock includes a first lock pin electrically connected to a ground pin of a motherboard of the electronic device, and a second lock pin. The power switch includes a button, a first elastic conductive sheet electrically connected to the second lock pin, and a second elastic conductive sheet electrically connected to a power on pin of the motherboard. When the key is engaged with the lock and the button is pressed, the first lock pin is electrically connected to the second lock pin, the first elastic conductive sheet is electrically connected to the second elastic conductive sheet, the power on pin receives a low level signal, and the electronic device is turned on.

Electronic device and secure switch module thereof

A memory card includes a control chip, a buffer, a NAND gate, and an inverter. The memory card has a first surface and a second surface opposite to the first surface. A first group of conductive pins is located on the first surface, and connected to the buffer through a first channel. A second group of conductive pins is located on the second surface, and connected to the buffer through a second channel. An order of pins of the first group of conductive pins located on the first surface from left to right is the same as an order of pins of the second group of conductive pins located on the second. The buffer is electrically connected to the control chip. Data can be transmitted between the first group of conductive pins or the second group of conductive pins and the control chip through the buffer.

Memory card for storing and transmitting data

An electronic device includes a motherboard defining a number of through holes, a bottom wall forming a number of posts, and a fixing member including a fixing body mounted to the bottom wall and a movable body slidably mounted to the fixing body. Each through hole includes a first hole and a second hole communicating with each other. Each post includes a supporting portion, a head, and a neck. The fixing body forms a protrusion. The movable body includes a main portion, a connecting portion connected to the main portion and defining a limiting slot. The heads are extended through the first holes; the necks abut end walls bounding the second holes. The motherboard is sandwiched between the heads and the supporting portions, the protrusion is engaged in the limiting slot, and the main body abuts against an end of the motherboard adjacent to the fixing member.

Growing community of inventors

Shenzhen, China

Song Ma