Call prompt method

Patent metadata

Field	Value
Publication number	US-2020280824-A1
Application number	US-201516067244-A
Country	US
Kind code	A1
Filing date	Dec 31, 2015
Priority date	Dec 31, 2015
Publication date	Sep 3, 2020
Grant date	—

Abstract

The present disclosure relates to a call prompt method. In one example method, a first interface, indicating that the first terminal is in a call with a second terminal, is displayed on a first terminal. If a third terminal initiates a call to the first terminal at this moment, a second interface, indicating the call initiated by the third terminal, is displayed on the first terminal, and a sound is output. The sound includes a call voice and a prompt tone of the initiated call. If the call initiated by the third terminal to the first terminal is rejected, the call voice is output on the first terminal, and the prompt tone stops to be output. Or if the third terminal stops initiating the call, the first interface is displayed on the first terminal, and the call voice between the first terminal and the terminal continues to be output.

First claim

What is claimed is:

1 - 21 . (canceled)

22 . A call prompt method in a communications network, comprising:
displaying a first interface on a display screen of a first terminal, wherein the first interface shows that the first terminal is in a call with a second terminal; displaying a second interface on the display screen of the first terminal, wherein the second interface prompts that a third terminal initiates a call to the first terminal, and at this moment, the first terminal is still in the call with the second terminal; outputting, on the first terminal, a sound, wherein the sound comprises a prompt tone and a call voice between the first terminal and the second terminal, the prompt tone is used to prompt a call event, and the call event indicates that the third terminal initiates the call to the first terminal; and at least one of: if the call initiated by the third terminal to the first terminal is rejected:
continuing outputting, on the first terminal, the call voice between the first terminal and the second terminal; and
stopping outputting the prompt tone; or
if the third terminal stops initiating the call to the first terminal;
stopping displaying the second interface on the display screen of the first terminal;
displaying the first interface; and
continuing outputting, on the first terminal, the call voice between the first terminal and the second terminal.

23 . The method according to claim 22 , wherein the first terminal determines, by detecting that the prompt tone disappears, that the third terminal stops initiating the call to the first terminal.

24 . The method according to claim 23 , wherein the detecting, by the first terminal, that the prompt tone disappears comprises:
if the first terminal detects no prompt tone in N prompt tone detection periods, determining that the prompt tone disappears, wherein N is greater than or equal to 2.

25 . The method according to claim 22 , wherein the first terminal stops outputting the prompt tone by changing an amplitude value of a frequency corresponding to the prompt tone.

26 . The method according to claim 23 , wherein detecting the prompt tone comprises:
parsing, by the first terminal, a system broadcast message of a current cell to obtain network information; obtaining, according to the network information, prompt tone information pre-stored in the first terminal; and detecting a prompt tone in a received downlink signal according to the pre-stored prompt tone information.

27 . The method according to claim 26 , wherein the network information comprises a home operator network and a network standard.

28 . The method according to claim 23 , wherein the first terminal detects the prompt tone by using a linear spectrum detection method.

29 . The method according to claim 28 , wherein a fundamental frequency of the prompt tone is a single-frequency tone that has a constant amplitude and a constant frequency; and wherein the detecting, by the first terminal, the prompt tone by using the linear spectrum detection method comprises:
performing, by the first terminal, channel decoding and voice decoding on a received downlink signal to obtain pulse code modulation PCM data; dividing the PCM data into multiple data frames with a specific overlapping rate; multiplying each of the multiple data frames by a window function; performing a Fourier transformation to obtain a complex spectrum; calculating, at each pre-estimated frequency, a correlation coefficient between complex spectra of a previous frame and a current frame in a relaxation period; and determining, by the first terminal, that the prompt tone is detected on a corresponding frequency if the correlation coefficient exceeds a preset threshold.

30 . The method according to claim 29 , wherein:
after that the first terminal receives the call initiated by the third terminal, the method further comprises:
obtaining, according to network information obtained by the first terminal by parsing a system broadcast message of a current cell, prompt tone information pre-stored in the first terminal; and
detecting a prompt tone in the downlink signal according to the pre-stored prompt tone information; and
after the determining, by the first terminal, that the prompt tone is detected on a corresponding frequency if the correlation coefficient exceeds a preset threshold, the method further comprises:
comparing a frequency and an amplitude of the detected prompt tone with a frequency and an amplitude in the prompt tone information pre-stored in the first terminal; and
if a comparison result is that the frequency and the amplitude of the detected prompt tone are the same as the frequency and the amplitude in the prompt tone information pre-stored in the first terminal, or differences between the frequency and the amplitude of the detected prompt tone and the frequency and the amplitude in the prompt tone information pre-stored in the first terminal do not exceed comparison thresholds, determining, by the first terminal, that the prompt tone is detected.

31 . A non-transitory computer readable storage medium comprising instructions which, when executed by at least one processor, cause the at least one processor to perform the following operations:
controlling to display a first interface, wherein the first interface shows that a first terminal is in a call with a second terminal; controlling to display a second interface, wherein the second interface prompts that a third terminal initiates a call to the first terminal, and at this moment, the first terminal is still in the call with the second terminal; outputting a sound, wherein the sound comprises a prompt tone and a call voice between the first terminal and the second terminal, the prompt tone is used to prompt a call event, and the call event indicates that the third terminal initiates the call to the first terminal; and at least one of: if the call initiated by the third terminal to the first terminal is rejected:
continuing outputting the call voice between the first terminal and the second terminal; and
stopping outputting the prompt tone; or
if the third terminal stops initiating the call to the first terminal:
controlling to stop displaying the second interface;
displaying the first interface; and
continuing outputting the call voice between the first terminal and the second terminal.

32 . The non-transitory computer readable storage medium according to claim 31 , wherein the operations further comprise:
determining, by detecting that the prompt tone disappears, that the third terminal stops initiating the call to the first terminal.

33 . The non-transitory computer readable storage medium according to claim 32 , wherein the detecting that the prompt tone disappears comprises:
if the at least one processor detects no prompt tone in N prompt tone detection periods, determining that the prompt tone disappears, wherein N is greater than or equal to 2.

34 . The non-transitory computer readable storage medium according to claim 31 , wherein the at least one processor is further configured to stop outputting the prompt tone by changing an amplitude value of a frequency corresponding to the prompt tone.

35 . The non-transitory computer readable storage medium according to claim 32 , wherein detecting the prompt tone comprises:
parsing, by the at least one processor, a system broadcast message of a current cell to obtain network information; obtaining, according to the network information, prompt tone information pre-stored in the terminal; and detecting a prompt tone in a received d

Assignees

• Huawei Tech Co Ltd

Inventors

• Jin Hui
• Wu Xiaoguang
• Jiang Kaiyu
• Tan Liwen

Classifications

• H04M1/724

  User interfaces specially adapted for cordless or mobile telephones · CPC title

• H04M3/4288

  Notifying a called subscriber of an incoming call during an ongoing call, e.g. Call Waiting · CPC title

• H04M1/72513

  On hold, intercom or transfer communication modes · CPC title

• H04W4/16 Primary

  Communication-related supplementary services, e.g. call-transfer or call-hold · CPC title