Home appliance and method of outputting signal sound for diagnosis

• US 9,495,859 B2
• Filed: 07/02/2013
• Issued: 11/15/2016
• Est. Priority Date: 07/03/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Ha, Sangdoo, Lee, Jinwook, Kim, Moonhyun, Kim, Deoghyeon
• Primary Examiner(s): HO, DUC CHI
• Application Number:
  US13/933,467
• Publication Number:
  US 20140015684A1
• Time in Patent Office: 1,232 Days
• Field of Search: 379/106.01, 340/679
• US Class Current: 1/1
• CPC Class Codes: G08B 23/00 Alarms responsive to unspecified undesired or abnormal conditions
• CPC Class Codes: H04L 12/282 based on user interaction within the home receiver circuitry for displaying additional information being controlled by a remote control apparatus H04N21/42204
• CPC Class Codes: H04L 12/2825 Reporting to a device located outside the home and the home network access arrangements H04L12/2856; for remote control or remote monitoring of applications H04L67/025; telephonic communication systems adapted for combination with telemetering systems H04M11/002
• CPC Class Codes: H04L 2012/285 Generic home appliances, e.g. refrigerators
• CPC Class Codes: H04L 27/28 with simultaneous transmission of different frequencies each representing one code element

Abstract

Provided are a home appliance and a method of outputting a signal sound for diagnosis. The home appliance includes: a selection unit for receiving a diagnosis command on the home appliance from a user; a memory for storing diagnosis data on the home appliance; a controller for processing the diagnosis data stored in the memory in order to generate a packet according to a diagnosis command input through the selection unit; a conversion unit for generating a frame including a combination of symbols, which respectively correspond to four different carrier frequencies, on the basis of data constituting the packet, according to a Quadrature Frequency Shift Keying (QFSK) method.

Claims

1. A home appliance, comprising:

a selection unit that receives a diagnosis command on the home appliance from a user;

a memory that stores diagnosis data on the home appliance;

a controller that processes the diagnosis data stored in the memory in order to generate a packet according to a diagnosis command input through the selection unit;

a conversion unit that generates a frame including a combination of symbols, which respectively correspond to four different carrier frequencies, on the basis of data constituting the packet, according to a Quadrature Frequency Shift Keying (QFSK) method.

2. The home appliance of claim 1, wherein the four different carrier frequencies have values of less than 2 kHz.

3. The home appliance of claim 2, wherein the four different carrier frequencies constitute a scale.

4. The home appliance of claim 3, wherein the four different frequencies are based on 12 scales, and an interval between carrier frequencies has at least one scale.

5. The home appliance of claim 3, wherein the lowest one of the four different frequencies has a value of more than 1.3 kHz.

6. The home appliance of claim 1, wherein a symbol time, which is an output length of one carrier frequency outputted in correspondence to each symbol, is between 40 ms and 45 ms.

7. The home appliance of claim 1, wherein a total output time of a signal sound corresponding to the frame does not exceed 3 sec.

8. The home appliance of claim 1, wherein the conversion unit creates one frame in correspondence to the packet.

9. The home appliance of claim 8, wherein the frame comprises a continuous combination of symbols.

10. The home appliance of claim 1, wherein the controller performs a 1/2 code rate based encoding on the basis of the diagnosis data.

11. The home appliance of claim 10, wherein the controller adds a Frame Check Sequence (FCS) on the diagnosis data, and based on this, performs the encoding process.

12. The home appliance of claim 10, wherein the packet comprises data generated additionally during the encoding process.

13. The home appliance of claim 12, wherein the controller performs an interleaving process, including the added data.

14. The home appliance of claim 13, wherein the frame comprises a preamble added on symbols corresponding to the interleaved data.

15. The home appliance of claim 1, wherein the controller generates the diagnosis data by running a predetermined diagnosis algorithm to perform a diagnosis on the home appliance.

16. The home appliance of claim 1, further comprising a storage that stores the diagnosis algorithm.

17. A method of outputting a signal sound for diagnosing a home appliance, the method comprising:

generating a frame, which includes a combination of symbols respectively corresponding to four carrier frequencies, on the basis of bits constituting diagnosis data of the home appliance through a Quadrature Frequency Shift Key (QFSK) signal modulation; and

outputting the carrier frequencies as a sound signal according to the symbols constituting the frame, wherein the generating of the frame includes;

adding a Frame Check Sequence (FCS) on diagnosis data;

encoding data having the FCS added;

adding a tail symbol which is additionally generated during the encoding process; and

adding a preamble of a specific pattern for notifying a start of the frame.

18. The method of claim 17, further comprising performing an interleaving process between the adding of the tail symbol and the adding of the preamble.

19. The method of claim 18, wherein the encoding of the data is based on a 1/2 code rate.

20. The method of claim 19, wherein the frame comprises a preamble including 8 symbols, a payload having 48 symbols corresponding to the diagnosis data, an FCS including 8 symbols, and a tail symbol including 2 symbols.

21. The method of claim 17, wherein an output length of a carrier frequency outputted in correspondence to one symbol is between 40 ms and 45 ms.

22. The method of claim 21, wherein the generating of the frame comprises generating a frame including a continuous combination of symbols.

23. The method of claim 17, wherein the four different carrier frequencies have values of less than 2 kHz.

24. The method of claim 23, wherein the four different carrier frequencies constitute a scale.