Detection circuit and method of detecting illegal removal thereof
AssigneeWiwynn Corporation
InventorsYu Shu Kao, Hsuan-Chih Kao, Yueh-Chi Lee, Yun-Chih Tsai
Life of this patent
Estimating the term…
Abstract
A detection circuit, including a first connecting terminal, an SPI bus, and a security component, is provided. The first connecting terminal is configured to be detachably connected to the main board. The security component is coupled to the first connecting terminal and the SPI bus. The security component forms a first loop with the main board, and is configured to detect a loop state of the first loop. The security component locks the SPI bus when the first loop is being detected by the security component to be disconnected.
Claims17
A detection circuit, comprising:
- a first connecting terminal, detachably coupled to a main board;
- a Serial Peripheral Interface (SPI) bus, coupled to the first connecting terminal;
- a security component, coupled to the SPI bus, forming a first loop with the main board, and configured to detect a loop state of the first loop, wherein the SPI bus is locked when the security component detects that the first loop is disconnected;
- and
- an unlocking terminal, configured to be detachably connected to an unlocking component to form a second loop, wherein the SPI bus is conducted when the security component detects that the second loop is conductive.
An electronic system, comprising:
- a main board;
- and
- a detection circuit, further comprising:
- a first connecting terminal, detachably coupled to the main board;
- a Serial Peripheral Interface (SPI) bus, coupled to the first connecting terminal;
- a security component, coupled to the SPI bus, forming a first loop with the main board, and configured to detect a loop state of the first loop, wherein the SPI bus is locked when the security component detects that the first loop is disconnected;
- and
- an unlocking terminal, configured to be detachably connected to an unlocking component to form a second loop, wherein the SPI bus is conducted when the security component detects that the second loop is conductive.
A method of detecting an illegal removal, which is applicable to a detection circuit having a first connecting terminal, a Serial Peripheral Interface (SPI) bus, and a security component, wherein the first connecting terminal is configured to detachably connect to a main board, wherein the SPI bus is coupled to the first connecting terminal and the security component, the method comprising:
- detecting a loop state of a first loop formed by the first connecting terminal and the main board, wherein the SPI bus is locked when the first loop is detected to be disconnected;
- and
- conducting the SPI bus when the security component detects that a second loop is conductive, wherein the detection circuit further comprises an unlocking terminal that is configured to be detachably connected to an unlocking component to form the second loop.
Dependencies are inferred from the claim text.