KR0166750B1 - Television equipped with telephone automatic response function and telephone massage response method - Google Patents

Abstract

The present invention relates to a TV receiver having a telephone message answering function. In particular, when the TV receiving mode performs a normal TV receiving function and the TV receiving mode is turned off (that is, in the absence of a user), the telephone answering machine according to the present invention is performed. It automatically switches to the mode, and compresses and stores the other party's telephone voice message through a modem, and reads and expands the corresponding message when requested by the user, and then outputs the voice. Accordingly, the present invention provides an effect of eliminating the need for a separate telephone having an automatic answering function to record the voice message of the other party in the user absence. In addition, the present invention provides an existing digital TV receiver by providing a TV receiver having an automatic telephone answering function when the user is not in a busy mode and operating in a TV receiving mode. It provides the effect that can be utilized as telephone answering machine in absence.

Description

Answering method of TV receiver and telephone voice message with telephone answering function

1 is a block diagram of a TV receiver having an automatic telephone answering function according to the present invention;

2 is a flowchart illustrating a process of recording a telephone voice message by a TV receiver of the present invention.

* Explanation of symbols for main parts of the drawings

11: MPU 12: OSD processing unit

13: voice signal compression and extension 14: memory

15: A / D conversion unit 16: voice processing unit

17: modem 20: monitor

30: speaker

The present invention relates to a TV receiver having an automatic telephone answering function for recording a voice message transmitted through a telephone line when the TV receiving mode is turned off, and outputting a voice for a message response request so that a user can listen.

In general, an analog TV receiver uses a signal processing method of demodulating a TV broadcast signal modulated by a transmitter for each image signal and an audio signal, outputting the image through a screen, and outputting an audio signal through a speaker. However, a digital TV receiver reproduces and outputs audio according to a digital signal processing method in order to secure high-quality video and high-quality sound. Compression encoding algorithm using difference is used.

Recently, the spread of TV receivers for satellite broadcasting which reproduces images using Direct Broadcasting Systm (DBS) for transmitting TV signals through satellite channels has been expanded. The satellite TV receiver is provided with a modem for reproducing the encoded TV signal from the transmitting side as an image, while imposing a memory having a predetermined storage capacity and charging information for a pay channel.

That is, when the transmitting side transmits the compressed and encoded TV signal by using the correlation between before and after images when transmitting the TV signal, the satellite broadcasting TV receiver stores the compressed and encoded TV signal in memory and frame by frame when decoding. Read and restore the original video. In addition, a modem is installed on the satellite TV receiver for the program provider to remotely read the paid channel usage status from the outside, and the subscriber information such as subscriber identification information, viewing program, and viewing time is provided through a telephone line connected to the modem. Send and receive

An object of the present invention is to compress and encode the telephone voice message of the other party in the absence of the user (when the TV reception mode is off) and to store it in the memory, and to turn on the TV receiver to check the presence or absence of the telephone voice message screen The present invention provides a TV receiver having an automatic telephone answering function for allowing a user to listen to a voice by outputting a telephone voice message stored in a memory.

It is another object of the present invention to convert a telephone voice message into digital voice data after converting the other party's diplomacy transmitted through the telephone line connected to the modem when the TV reception mode is off, and then store the result in a memory by compressing and encoding the voice message. The present invention provides a method of answering a telephone voice message to output voice according to the present invention.

A TV receiver having an automatic telephone answering function for achieving the above object of the present invention includes a memory for storing a compressed coded TV signal and a MPU and subscriber information for controlling video output of the TV signal in a TV receiving mode. In a TV receiver having a modem for transmitting and receiving via the MPU, the MPU switches to the telephone answering mode when the TV receiving mode is turned off to perform overall control for the telephone answering function, and through the telephone line and the modem. An A / D converter for digitally converting the transmitted telephone voice signal; Under the control of the MPU, the digitally converted voice signal from the A / D converter is compressed and output to the memory, and during voice output, the compressed and decompressed voice signal is expanded and read by reading the registered voice data in the memory. ; And a voice processing unit converting the voice data extended by the voice signal compression and extension unit into an analog form and then amplifying the voice data to an appropriate level.

A method for answering a telephone voice message for achieving the above object of the present invention is to register a telephone voice message in a digital TV receiver equipped with a modem and a memory so that the telephone voice message is reproduced and output at the request of a user. A response method comprising: switching to a telephone answering mode when the TV receiving mode is turned off, the telephone line searching for a line connection state, and the modem detecting a ring signal; The MPU receiving the ring detection signal of the modem to switch the operation mode to a recording mode to store a telephone voice message in a memory; Connecting a line based on the ring detection signal, reading guide voice information stored in a memory, and transmitting the guide voice information to a counterpart through a telephone line; Compressing a telephone voice message from the counterpart in response to the guide voice information and storing the compressed voice message in a memory; Displaying a registration status of a telephone voice message stored in the memory; And reproducing and outputting a telephone voice message designated by the MCU from a memory.

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

The present invention is applied to a digital TV receiver having a modem and a memory for transmitting subscriber information or storing and reproducing a TV signal frame by frame. The present invention provides a telephone answering machine when a user is absent in addition to a normal TV receiving function. It relates to a TV receiver which can be used in combination. The TV receiver according to the present invention compresses and records the telephone voice message of the other party through the modem of the console when the user is absent, that is, when the TV receiver is 'off', and confirms the telephone tone message. If there is a user's request for information, it displays the information on the telephone voice message so that the user can immediately check the presence or absence of the telephone voice message, the number of telephone voice messages, the input time, and the recorded voice message according to the user's request. Audio playback output.

Referring to the first 1 showing the TV receiver having the telephone answering function according to the preferred embodiment of the present invention, the TV receiver of the present invention is a microprocessor unit (hereinafter referred to as 'MPU') for controlling the telephone answering function as a whole. 11). The MPU 11 performs a conventional inherent function of outputting a video signal and outputting an audio signal when watching a TV (TV reception mode). When the TV reception mode is canceled, the MPU 11 automatically switches to the telephone answering mode according to the present invention. It is switched to perform the related control in general. The modem 17 connected to the telephone line under the above-mentioned telephone answering mode detects the telephone call signal of the other party under the control of the MPU 11, and outputs an interrupt signal to the MPU 11 or a link for connecting the telephone line. It performs the setting, and outputs the voice signal received through the telephone donut to the A / D conversion unit 15. The A / D converter 15 digitally converts the analog voice signal from the modem 17 and outputs it to the voice signal compression and extension unit 13. The audio signal compression and decompression unit 13 compresses and encodes the digital audio signal from the A / D converter 15 under the control of the MPU 11 and outputs it to the memory 14 to reduce the amount of data. The memory 14 stores the compressed audio signal from the audio signal compression and extension unit 13 at the corresponding address applied from the MPU 11. On the other hand, when the user inputs a contracted key signal to listen to the stored phone voice message, the authorized MPU 11 receives the information on the registered voice message, that is, the presence or absence of the phone voice message, the number of phone voice messages, phone voice The information signal for the input time of the message is output to the OSD processing unit 12, and the OSD processing unit 12 displays this on the screen of the monitor 20 as additional information such as letters and numbers. Subsequently, when the user selects a phone voice message for which the user wants to listen to the phone voice message related information displayed on the screen through a key operation, the MPU 11 stores a read address corresponding to the message in response to the key input signal. 14). As a result, the voice signal compression and extension unit 13 reads the compressed coded voice message from the memory 14, and expands and outputs it to the original voice data before being compressed and encoded. The voice processor 16 amplifies the expanded voice signal from the voice signal compression and extension unit 13 to an appropriate level and outputs it to the speaker 30. Accordingly, the speaker 30 reproduces the voice message of the telephone voice. Output

Here, the telephone voice message recording process of compressing and encoding the voice signal of the other party transmitted through the telephone line in the absence of the user and storing it in the memory 14 will be described according to the operation flowchart of FIG.

The automatic answer processing routine shown in FIG. 2 is performed by automatically switching to the telephone answering mode according to the present invention when the TV receiver stops the video output and the audio output of the TV signal, that is, when the TV receiving mode is released.

When the telephone answering mode is entered, the MPU 11 searches the modem 17 periodically to find out the line connection state (step 101). To this end, the MPU 11 first sets the value of the 'S0 register', which is the automatic reception function register of the modem 17, to a value greater than or equal to 1, so that the modem 17 can automatically receive an incoming call. . Here, the value 1 of the S0 register means that the call is answered after one ring. When the modem 17 detects a ring signal generated by the other party's dialing, the modem 17 applies a ring detection signal to the MPU 11, whereby the MPU 11 determines whether or not a ring detection signal is input (102). step). Subsequently, if the ring detection signal is not applied, the MPU 11 feeds the link back to the modem 17 to record the voice message while switching the operation mode to the recording mode when the ring detection signal is applied again. By setting, the telephone conference nut is connected (step 103).

In step 103, when an external telephone line is connected to the line terminal diplomacy of the modem 17 and a separate telephone is simultaneously connected to the phone terminal of the modem 17, the MPU 11 provides a predetermined delay time. After the set time has elapsed, the telephone line is connected so that the TV reception mode is off, but the user can answer the call directly when he is not away.

In step 103, when the modem 17 and the external telephone line are connected, the MPU 11 stores the pre-stored voice announcement information indicating that the user is away, for example, the user is currently away from the memory 14. It reads out and transmits the information to the other party who calls through the modem 17 and the telephone line (step 104). In response, the other party leaves the telephone voice message, and the telephone voice message is supplied to the A / D conversion unit 15 via the modem 17, and the A / D conversion unit 15 digitally converts the telephone voice signal. The voice signal compression and extension unit 13 compresses and encodes the digitally converted telephone voice data from the A / D conversion unit 15 according to the PCM (Pulse Code Modulation) or DPCM (Differential Pulse Code Modulation) method. (Step 105). The compressed coded voice data is then stored in the memory area of the memory 14 corresponding to the address address applied from the MPU 11 (step 106). Subsequently, the MPU 11 causes the modem 17 to disconnect the line connection and returns to the standby mode so that the next telephone voice message can be received.

On the other hand, when the user inputs the key signal promised to listen to the pre-stored phone voice message according to the above-described method, the MPU 11 that receives the authorization is informed about the registered voice message, that is, the presence or absence of the phone voice message, the phone voice The information signal about the number of messages and the input time of the telephone voice message is output to the OSD processing unit 12, and the OSD processing unit 12 displays them on the screen as additional information such as letters and numbers. Subsequently, while viewing the input state of the telephone voice message displayed on the screen, the user selects the telephone voice message to be listened by using an operation key. The MPU 11 applies a read address corresponding to the message to the memory 14 in order to interpret a key input signal from the user and output the telephone voice message. Then, the voice signal compression and extension unit 13 decompresses (decodes) the compressed voice data read out from the memory 14 into the voice data before being encoded through the reverse process of the above-described compression encoding process. Thereafter, the voice processing unit 16 converts the digital voice data restored to the voice data before encoding into analog voice data, and amplifies the digital voice data to a sound level suitable for human hearing and then outputs them to the speaker 30. As a result, the user can listen to the other party's telephone voice message reproduced and output through the speaker 30.

In the above-described embodiment, the voice signal compression and extension unit 13 for compressing and decompressing a voice signal may be implemented by using a dedicated chip (DSP, etc.) in hardware, and a compression / extension algorithm is applied to the MPU 11 if necessary. By programming the built-in, it may be performed in place of the role of the voice signal compression and extension unit 13. That is, the decoded voice signal compression and extension unit 13 compresses and expands the voice signal according to the PCM method or the DPCM method. In the case of the PCM method and the DPCM method, since the voice new compression algorithm is relatively simple, the MPU 11 itself. It can also be implemented in software. When the voice signal compression and extension is implemented in software, the above-mentioned voice signal compression and decompression unit 13 is replaced by the MPU 11 incorporating the above-described voice signal compression and extension algorithm.

In addition, when the other party's voice message is recorded on the TV receiver, the display device such as an LED on the TV panel may be turned on so that the user may immediately confirm whether or not the telephone voice message is received.

As described above, the TV receiver according to the present invention operates in the TV reception mode when there is a user, and when the TV reception mode is released (that is, when the user is absent), the TV receiver is switched to the telephone answering mode so that the telephone answering function is performed. By realizing it, it is not necessary to separately provide a telephone having an automatic answering function for recording the telephone voice message of the other party who is not in the user's absence. ) And the memory 14 can be used according to the mode state, thereby providing the effect of implementing the telephone answering function at a lower cost.

Claims (7)

A TV receiver having a memory for storing a compressed coded TV signal and a modem for transmitting and receiving subscriber information over a telephone line in a TV receiving mode and an MPU for controlling video output of the TV signal, wherein the MPU receives the TV. When the mode is turned off, the mode is switched to the telephone answering mode to perform overall control for the telephone answering function, and an A / D converter for digitally converting the telephone voice signal transmitted through the telephone line and the modem under the control of the MPU. ; Compressing and expanding the digitally converted telephone voice signal from the A / D conversion unit to the memory under the control of the MPU, and reading and reproducing the voice data compressed and registered in the memory; And a voice processing unit for converting the voice data expanded by the voice signal compression and extension unit into an analog form and then amplifying the voice data to an appropriate level. 2. The automatic telephone answering function according to claim 1, wherein the voice signal compression and extension unit employs one of a pulse code modulation (PCM) method and a differential pulse code modulation (DPCM) method to compress and expand voice data. TV receiver having a. The TV receiver having an automatic telephone answering function according to claim 1, further comprising an OSD unit for receiving information on the telephone voice message registered in the memory from the MPU and outputting the caption on a screen. A telephone voice message answering method in which a telephone voice message is registered in a digital TV receiver having a modem and a memory, and reproduced and output at the request of a user. When the TV receiving mode is turned off, the telephone voice answering mode is switched to the telephone answering mode. Detecting a ring signal by a modem by searching a line connection state of a line; The MPU receiving the ring detection signal of the modem to switch the operation mode to a recording mode to store a telephone voice message in a memory; Connecting a line based on the ring detection signal, reading guide voice information stored in a memory, and transmitting the guide voice information to a counterpart through a telephone line; Compressing a telephone voice message from the other party according to the guide voice information and storing the compressed voice message in a memory; Displaying a registration status of a telephone voice message stored in the memory; And reproducing and outputting a telephone voice message designated by the MPU from a memory. 5. The method of claim 4, wherein the storing of the telephone voice message in a memory comprises: digitally converting a telephone voice signal from the modem by an A / D converter, and converting the digitally converted voice signal into a voice signal compression and extension unit. And a method of compressing and storing one of a modulation (PCM) method and a differential pulse code modulation (DPCM) method. The method of claim 4, wherein the displaying of the registration status of the telephone voice message comprises receiving an information signal on the presence or absence of a telephone voice message, the number of telephone voice messages, and the input time of the telephone voice message from the MPU. Answering method of telephone voice message, characterized in that displayed by numbers. 5. The method of claim 4, wherein the reproducing and outputting of the telephone voice message are performed by audio signal compression and extension by one of a pulse code modulation (PCM) method and a differential pulse code modulation (DPCM) method. And decompressing the encoded voice data, converting the decompressed voice message into an analog signal, and then amplifying the coded voice data to an appropriate level.