# US 8,542,020 B2 · Electronic device and apparatus for identifying electronic product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,542,020 B2 - Document ID: US8542020B2 - Status: Granted - Kind: B2 - Application number: 12/948,895 - Filed: 2010-11-18 - Published: 2011-05-19 - Granted: 2013-09-24 - Earliest claimed: 2009-11-18 - Assignees: Huawei Device Co., Ltd. - Applicants: Chunshu Li - Inventors: Chunshu Li - Web page: https://patentgrep.com/patent/US8542020B2 ## CPC - H03K 19/1732: {by limitation or reduction of the pin/gate ratio (for data-processing equipment G06F1/22)} - H05K 1/0268: {for electrical inspection or testing} - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract An apparatus for identifying an electronic product and an electronic device are disclosed. The apparatus includes: a detection voltage outputting unit, configured to receive a reference voltage and output a detection voltage; a detection voltage obtaining unit, connected to the detection voltage outputting unit and configured to obtain the value of the detection voltage; a mapping storing unit, configured to store a mapping between the value of the detection voltage and a product identifier; and a product identifier obtaining unit, configured to obtain the product identifier corresponding to the value of the detection voltage from the mapping storing unit according to the value of the detection voltage obtained by the detection voltage obtaining unit. With the apparatus for identifying an electronic product, the number of occupied chip detection ports is reduced, and the use area of a printed circuit board (PCB) is reduced. ## Claims ### Claim 1 An apparatus for identifying an electronic product, comprising: a detection voltage outputting unit, configured to receive a reference voltage and output a detection voltage; a detection voltage obtaining unit, connected to the detection voltage outputting unit and configured to obtain the value of the detection voltage; a mapping storing unit, configured to store a mapping between the value of the detection voltage and a product identifier; and a product identifier obtaining unit, connected to the detection voltage obtaining unit and the mapping storing unit and configured to obtain the product identifier corresponding to the value of the detection voltage from the mapping storing unit according to the value of the detection voltage obtained by the detection voltage obtaining unit. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the detection voltage outputting unit is a voltage-dividing circuit. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the detection voltage outputting unit comprises a first resistor and a second resistor, wherein: one end of the first resistor is connected to the reference voltage, the other end of the first resistor is connected to one end of the second resistor and the detection voltage obtaining unit, and the other end of the second resistor is grounded. ### Claim 4 (depends on 3) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 3, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device. ### Claim 5 (depends on 2) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 2, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the detection voltage obtaining unit is an analog-digital converting (ADC) module. ### Claim 7 (depends on 6) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 6, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the detection voltage obtaining unit is located in a main chip of the electronic product. ### Claim 9 (depends on 8) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 8, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the reference voltage is directly provided by a power supply of the electronic product. ### Claim 11 (depends on 10) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 10, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the reference voltage is provided by a programmable port of a main chip on the electronic product. ### Claim 13 (depends on 12) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 12, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device. ### Claim 14 (depends on 1) The apparatus of claim 1, further comprising: a product identifier outputting unit, connected to the product identifier obtaining unit and configured to output the obtained product identifier. ### Claim 15 (depends on 14) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 14, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device. ### Claim 16 (depends on 1) An electronic device, comprising a functional module and the apparatus for identifying the electronic product identifier of claim 1, wherein: the apparatus is configured to generate an electronic product identifier for the electronic device; and the functional module is configured to implement various functions of the electronic device.