KR100228662B1 - Ars with adaptive wireless calling function - Google Patents

Abstract

The present invention relates to an answering machine having an adaptive radio calling function with improved performance. The answering machine of the present invention searches for the other party's message recording so that the call can be made automatically only when the message is recorded, so that the adaptive wireless calling function is much more effective in terms of time and cost compared to the conventional caller without having to leave a message. It provides an answering machine equipped with a.

Description

Answering machine with adaptive radio calling

1 is a block diagram showing an answering machine having an adaptive radio calling function according to a preferred embodiment of the present invention.

2 is a detailed view showing recording search means in the answering machine of FIG.

3 is a flow chart for explaining the operation of the recording search means of FIG.

* Explanation of symbols for main parts of the drawings

11: message transmission and reception unit 12: recording unit

13: recording search means 14: call unit

131: A / D converter 132,133,134: calculation unit

135: decision

The present invention relates to an answering machine having a wireless call function, and more particularly, to automatically check a message by automatically calling a user having a pager when the other party leaves a message in the answering machine. An answering machine having an adaptive radio calling function is provided.

As the information society becomes more advanced these days, an answering machine that can automatically receive a call from the other party in the absence, a wireless pager that can call the other party, and a mobile phone that can carry a phone call anywhere without special restrictions Communication equipment such as is becoming more and more common. Here, mobile phones are expensive, while answering machines and pagers are readily available at relatively low prices. On the other hand, when the answering machine leaves a message in the absence of the answering machine, the user does not know the message immediately unless the user directly confirms the disadvantage of urgency and speed. Therefore, a built-in wireless call function excellent in urgency and speed is built into an answering machine so that a user's wireless pager can be called automatically when a message is left in the absence of the user. That is, the same function as the voice mailbox of the pager. However, when an answering machine equipped with such a function receives a call, most callers are awkward and simply hang up without leaving any message.

But even in this case, the answering machine calls the user. The user who makes the call makes a call and checks his answering machine, but there is nothing recorded and it makes him feel bad. In particular, some answering machines call back two or three times every few minutes without checking the user's message, so that the user who receives the call wastes time and money on checking the meaningless telephone contents.

Accordingly, an object of the present invention is to provide an answering machine having an adaptive radio calling function which calls only when a message is recorded after searching whether a message is recorded in the answering machine so as to solve the above problems.

In order to achieve the above object, an answering machine having an adaptive radio call function according to the present invention is provided with a recording unit for recording a voice message of the other party, and whether or not the voice message is searched for and recorded on the recording unit. Recording search means for determining the number, and a caller for automatically calling the user's wireless pager according to the call decision of the recording search means.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an answering machine having an adaptive radio calling function according to the present invention. As shown, the automatic answering machine of the present invention transmits a pre-stored guide message to the other party when a call is missed, and is received by the message transmitting and receiving unit 11 and the message transmitting and receiving unit 11 for receiving a message from the other party. A recording unit 12 for recording the other party's message has been provided.

The recording unit 12 is connected to the recording search unit 13 for determining whether or not a call by recording the other party's message. The recording retrieval means 13 is configured such that a call unit 14 for automatically calling the user's wireless pager in accordance with the call determination signal is connected.

2 is a detailed diagram showing the recording search means 13 in the answering machine of FIG. As shown, the recording retrieval means 13 includes an A / D converter 131 for analog digital conversion of the audio signal containing the other party's message recorded in the recording unit (see FIG. 1), and analog digital. First to third calculators 132 to 134 for calculating the duration of the recorded section from the converted voice data, the average value of the magnitude, and the zero crossing rate. First to third calculator 132 134) is configured to be connected to a determination unit 135 that receives the calculated duration of the recorded interval, the average value of the size, and the zero crossing rate, and determines whether or not to call by determining whether the other party left a message.

The operation of the answering machine with the adaptive radio call function of the present invention configured as described above will be described in more detail with reference to FIG.

3 is a flowchart for explaining the operation of the recording search means 13 of FIG.

First, when a call is missed, the message transmission and reception unit 11 of the answering machine sends a pre-stored guide message to the other party through the connected telephone line.

The other party receiving the guide message transmits a voice signal containing a message to be left, and the message transmitting and receiving unit 11 of the answering machine receives the voice signal containing the other party's message and outputs it to the recording unit 12. The recording unit 12 records the voice signal of the other party transmitted from the other party through the connected telephone line. The recording unit 12 that is recording supplies the recorded voice signal to the recording search unit 13 when the telephone is disconnected. The A / D converter 131 of the recording search means 13 converts the audio signal containing the other party's message recorded by the recording unit 12 to analog digital conversion (step 301). The analog digitally converted recording signal is input to the first calculator 132, the second calculator 133, and the third calculator 134, respectively. The first calculator 132 calculates the duration of the recording section from the analog digitally converted recording signal, and the second calculator 133 calculates an average value of the magnitude from the analog digitally converted recording signal. Average of magnitude, and the third calculator 134 calculates a zero crossing rate (ZCR) from the analog digitally converted recording signal (step 302). Here, the first to third calculator 132 Since the calculation process for obtaining the duration dur, the average value mag, and the zero crossing ratio ZCR of the recording section of 134 is a well-known technique, description thereof is omitted. The calculated duration (dur) of the recording section, the average value (mag) of the magnitude, and the zero crossing rate (ZCR) is input to the determination unit 135. The determination unit 135 compares the calculated duration of the recording period dur, the mean value mag of the magnitude, and the zero crossing rate ZCR, respectively, with thresholds Thrh1, Thr2, and Thr3 that are preset. The determination unit 135 determines that the duration (dur), the average value (mag), and the zero crossing ratio (ZCR) of the recording period calculated as a result of the comparison are larger than the threshold (dur). Thr1, mag Thr2, ZCR Thr3) (step 303), the caller 14 recognizes that the voice signal of the other party is recorded and outputs a call decision signal to automatically call the user who has a wireless call (step 304). The determination unit 135 recognizes that the other party does not leave a message and just disconnects if the duration (dur), the average value of the magnitude (mag), and the zero crossing rate (ZCR) calculated as a result of the comparison are not greater than the threshold. By controlling the caller 14 not to call. The calling unit 14 makes a call when the other party's voice signal is recorded according to the call decision signal applied from the decision unit 135 of the recording searching unit 13, and makes a call when the other party disconnects without leaving a message. I never do that.

Here, the determining unit 135 of the recording searching means 13 searches for the voice message recording of the other party to determine the call, and the calculated duration of the recording period (dur), the average value of the magnitude (mag), And when the zero crossing rate ZCR is large for each of the preset thresholds Thr1, Thr2, and Thr3, the voice message of the other party is recognized as being recorded and the accuracy is high. In addition, if at least one of the calculated duration (dur) of the recording section, the average value (mag) of the magnitude, and the zero crossing rate (ZCR) is larger than the preset threshold, it may be recognized that the voice message of the other party is recorded.

As described above, the present invention relates to an answering machine having an adaptive radio calling function. When the answering machine answers a call, the caller automatically calls the user who has a radio call unconditionally without leaving a message. On the other hand, by making a call only when the other party left a message, the user does not have to check a meaningless message, thereby reducing time and telephone costs.

Claims (4)

An answering machine having a wireless calling function, the answering machine comprising: a recording unit for recording a received voice message of the other party; Recording search means for searching the recording unit to determine whether or not the voice message is recorded; And a caller for automatically calling a user's wireless pager according to the call decision of the recording retrieval means. The recording apparatus of claim 1, wherein the recording search unit comprises: an A / D converter for analog-digital converting the recording signal of the recording unit; A calculator configured to receive the analog digitally converted recording signal and calculate a duration, a mean value of the magnitude, and a zero crossing ratio, respectively; And comparing the calculated duration of the recording section, the average value of the magnitude, and the zero crossing rate, respectively, with a preset threshold to determine whether to record the other party's voice message, and if it is determined that the other party's voice message is recorded, calling the calling unit. Answering machine with an adaptive radio call function, characterized in that consisting of a decision unit for determining. 3. The method of claim 2, wherein the determining unit compares the duration of the recording period, the average value of the magnitude, and the zero crossing rate with each preset threshold to determine that the other party's voice message is recorded. An answering machine with an adaptive radio call feature. 3. The apparatus of claim 2, wherein the determining unit compares the calculated duration of the recording period, the average value of the magnitude, and the zero crossing rate to a preset threshold, respectively, and determines that the other party's voice message is recorded when at least one is greater than the threshold. An answering machine having an adaptive radio call function, characterized in that.