Detecting key positions to determine a type of cable

• US 9,778,308 B2
• Filed: 09/20/2012
• Issued: 10/03/2017
• Est. Priority Date: 09/20/2012
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Truong, Binh T., Nguyen, Nam, Wright, Robert S.
• Primary Examiner(s): HOQUE, FARHANA AKHTER
• Application Number:
  US14/414,755
• Publication Number:
  US 20150168471A1
• Time in Patent Office: 1,839 Days
• Field of Search: 324 66, 324660, 710 16
• CPC Class Codes: G01R 31/58 Testing of lines, cables or conductors testing of electric windings G01R31/72
• CPC Class Codes: G01R 31/60 Identification of wires in a multicore cable
• CPC Class Codes: G06F 13/409 Mechanical coupling back panels H05K7/1438
• CPC Class Codes: G06F 2213/0042 Universal serial bus [USB]
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Examples disclose a computing system comprising a host device with a connection socket to support multiple types of cables by detecting a first key position and a second key position for determination of the type of cable. Further, the computing system comprises a switching circuit to determine a logic state of each of the key positions. Additionally, the switching circuit is to deliver power associated with the type of cable based on the logic states of the key positions.

Claims

1. A computing system to detect a type of cable comprising:

a host device with a connection socket to support multiple types of cables, wherein the connection socket comprises a first key position and a second key position, the connection socket to;

detect the first key position and the second key position for determination of the type of cable to be connected into the connection socket;

a switching circuit to;

determine a logic state of each of the key positions while the cable is to be connected into the connection socket; and

deliver power associated with the type of cable to be connected into the connection socket, wherein the power delivered is to be based on the logic states of the key positions.

2. The computing system of claim 1 wherein the switching circuit is further comprising:

a voltage regulator to convert the power to a voltage level corresponding to the type of cable; and

a diode to direct a flow of current corresponding to the voltage level to a peripheral device from the host device through the type cable.

3. The computing system of claim 1 further comprising:

the type of cable to;

insert into the connection socket, the type of cable includes features corresponding to the first and the second key positions for detection; and

provide the power associated with the type of cable to a peripheral device from the host device.

4. The computing system of claim 1 wherein the switching circuit is further comprising:

multiple semiconductors to obtain the logic states of each of the key positions to deliver the power associated with the type of cable.

5. The computing system of claim 1 wherein:

the host device with the connection socket includes multiple spring triggers to detect the first and the second key positions; and

the host device with the connection socket detects the first and second key positions by determining an impedance associated with each of the first and the second key positions.

6. A non-transitory machine-readable storage medium encoded with instructions executable by a processor of a computing device, the storage medium comprising instructions to:

detect a first key position and a second key position of a universal serial bus connection socket of the computing device, to determine a type of a universal serial bus cable to be connected into the connection socket, the key positions to indicate the type of the universal serial bus cable to be connected into the connection socket; and

determine a first logic state of the first key position and a second logic state of the second key position to deliver power associated with the type of the universal serial bus cable to be connected into the connection socket, based on the logic states.

7. The non-transitory machine-readable storage medium including the instructions of claim 6, wherein the type of the universal bus cable corresponds to a voltage level corresponding to the universal serial bus cable.

8. The non-transitory machine-readable storage medium including the instructions of claim 6, wherein a universal serial bus connector supports multiple types of universal serial bus cables and detects the key positions to determine the type of the universal serial bus cable.

9. The non-transitory machine-readable storage medium including the instructions of claim 8, wherein to detect the key positions in the universal serial bus connector to determine the type of the universal serial bus cable is further comprising instructions to:

determine a first impedance of the first key position and a second impedance of the second key position for detection.

10. The non-transitory machine-readable storage medium including the instructions of claim 6, wherein the power associated with the type of the universal serial bus cable is delivered from a host device through the type of the universal serial bus cable to a peripheral device.

11. A method executed by a computing device comprising:

detecting a first key position and a second key position of a connection socket of the computing device by a universal serial bus connector of a universal serial bus cable to be connected into the connection socket, wherein the key positions are to indicate a type of the universal serial bus cable;

determining a logic state of each of the first and the second key positions, while the universal serial bus cable is to be connected into the connection socket; and

delivering power associated with the type of universal serial bus cable to be connected into the connection socket, wherein the power delivered is to be based on the logic states of the first and the second key positions.

12. The method of claim 11 wherein the logic states of the first and the second key positions correspond to multiple voltage levels, each multiple voltage level associated with the type of universal serial bus cable.

13. The method of claim 11 wherein if the logic state of the first and the second key positions, the method is further comprising:

delivering no power.

14. The method of claim 11 wherein detecting the first key position and the second key position in the universal serial bus connector is further comprising:

obtaining an impedance measurement of each of the first key position and the second key position between the type of the universal serial bus cable and the universal serial bus connector.

15. The method of claim 14 wherein delivering the power associated with the type of the universal serial bus cable based on the logic states is further comprising:

delivering a voltage corresponding to the type of the universal serial bus cable from a host device with the universal serial bus connector through the type of the universal serial bus cable to a peripheral device.