KR19980038461A - Audio / Video (A / V) Automatic Response Control Device of Home Automation System and Its Control Method - Google Patents

Abstract

The present invention is a home automation (HomeAutomation) system that can make a voice call while watching the visitor, in the current home automation system, when there is no person inside when the visitor presses a bell, there is no response and the visitor does not have a visit Since this problem cannot be solved, the home / automation system's audio / video (A / V) system can solve the problem and provide the visitor with an out-of-office guide message and store the visitor's visit information in a storage medium for playback. An answering device and a control method thereof are provided.

Description

Audio / Video (A / V) Automatic Response Control Device of Home Automation System and Its Control Method

The HA system, which can be used to make voice calls while viewing the current visitors, has a camera and a bell button at the entrance of the house, and a monitor, a keyphone, a small loudspeaker and a microphone inside the house. In the case of ringing inside, you can check the outside person or make a call by operating the internal key phone.

Existing HA system, when there is no person inside when the visitor presses the bell, there is no response to embarrass the visitor, and the visitor's hard work is worth the effort. In addition, if the visitor is an important visitor to the user is a significant loss, the user does not know what visitor was in the absence of the inconvenience that can not cope even if the important thing.

The present invention solves the above problems by providing an absence guide message to the HA system capable of making a voice call while viewing the visitor's appearance, and storing and replaying the visitor information. If you press, it automatically saves the visitor's appearance and voice, and if the user has set the notification message providing function, the missed notification message can be provided to the visitor. Consideration was given to letting visitors know information about visitors, and to leave visitors informed.

1 is an overall configuration diagram of a home automation system according to the present invention

2 is a detailed block diagram of the A / V encoder of the present invention.

3 is a detailed block diagram of an A / V decoder of the present invention.

Figure 4 is a procedure for the A / V automatic response according to the present invention

* Explanation of symbols for the main parts of the drawings

1: Val button 2: Home Automation (HA) controller

3: microphone 4: internal loudspeaker

5: camera 6: external loudspeakers

7: screen monitor 8: keyphone

10: connection part 200: A / V encoder

300: data storage medium 400: A / V decoder

500: A / V Controller

The present invention, in the HA system that can make a voice call while watching the visitor, the connection to the input and output audio / video (abbreviated as A / V) for the HA system and the visitor The A / V encoder that compresses the signal inputted through the connection unit at a predetermined bit rate, a data storage medium that receives and stores the compressed A / V signal, and the A / V signal that is compressed and stored. By restoring the A / V decoder to send the HA system to the HA system through the connection unit, control the output of the missed announcement message by exchanging a control signal with the HA system, and compressing and storing the A / V signal that is input. And an A / V controller for controlling each part to output.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a block diagram of an HA system according to the present invention.

As shown in FIG. 1, a bell button 1 for a visitor to call, a HA controller 2 for detecting an interphone function by sensing a signal of the bell button 1, and an external microphone for making a voice call Phone 3 and internal speaker 4, external camera 5 and internal screen monitor 7 for checking the visitor's appearance, key phone 8 and external loudspeaker for talking with visitors in the house HA system is composed of a speaker 6, the connection unit 100 for connecting the HA system and the A / V signal, and the encoder 200 for compressing the A / V signal input through the connection unit 100 and A storage medium 300 for storing the compressed A / V signal, a decoder 400 for restoring the compressed and stored A / V signal, and outputting the compressed A / V signal to the HA system through the connection unit 100; Send and receive control signals to and from the HA controller 2 to provide out-of-office guidance messages and store and re-visit visitor's A / V information That consists of the A / V controller 500 for controlling the parts.

2 is a detailed block diagram of the A / V encoder of the present invention.

As shown in FIG. 2, the A / V encoder 200 according to the present invention includes an audio compression unit 220 for compressing an audio signal among A / V signals input through the connection unit 100, and a video compression for compressing a video signal. And a multiplexing unit 230 for multiplexing the compressed audio signal and the video signal.

The video compressor 210 pre-processes the video A / D converter 211 for converting an analog video signal input through the connection unit 100 into a digital video signal and a video signal converted into a digital signal. A preprocessing unit 212, a DCT unit 213 for performing frequency analysis on the preprocessed video signal, a quantizer 2l4 for quantizing the frequency analyzed result value, and an encoder 215 for encoding quantized data values ), An encoder parameter unit 216 for providing argument values to the quantizer 214 and the encoder 215, and a video frame sander 217 for outputting a quantized and encoded data value as a bit stream. It is composed of

The audio compressor 220 separates an audio A / D converter 221 for converting an analog audio signal input through the connection unit 100 into a digital audio signal, and a voice signal converted into a digital signal into subbands. A subband analyzer 222, a quantizer 224 for quantizing the subband separated audio signal, an encoding 225 for encoding the quantized audio signal, the quantizer 224 and the encoding And a psychoacoustic modeling unit 223 for providing the number of bits to the unit 225, and an audio frame generation unit 226 for outputting the quantized and encoded audio signal as a bit stream.

3 is a detailed block diagram of the A / V decoder of the present invention.

The A / V decoder 400 includes a demultiplexer 410 for separating the stored information read from the data storage medium 300 into an audio bit stream and a video bit stream, and an audio reconstruction unit 430 for restoring the audio bit stream. ) And a video restoring unit 420 for restoring the video bit stream.

The audio reconstructor 430 may include a voice frame analyzer 431 for analyzing the audio bit stream separated by the demultiplexer 410, and a decoder and dequantizer for decoding and dequantizing the analyzed audio signal. 432, a filter synthesizing unit 433 for resynthesizing the decoded and dequantized audio signal into digital values of the original audio signal, and audio for converting the audio signals converted into digital values of the original signal into analog audio signals. And a D / A conversion unit 434.

The video reconstructor 420 includes a video frame analyzer 421 for analyzing a video bitstream separated by the demultiplexer 410, an IDCT unit 422 for extracting a video signal from the analyzed information, and A decoder 423 for decoding the extracted video signal, an inverse quantizer 424 for inverse quantization of the decoded video signal, and a decoder for providing parameters to the decoder 423 and the inverse quantizer 424. And a video D / A converter 426 for converting the decoded and inversely quantized digital video data signal into an analog video signal.

Referring to the operation of the A / V automatic response control device of the HA system according to the present invention configured as described above are as follows.

First, when the visitor presses the bell button 1, the A / V controller 500 that prepares the HA system for operation in the HA controller 2 and controls the absence guide message output and visitor information storage / reproduction of the present invention. Inform them. Accordingly, when the key 8 is received in the house, the appearance of the visitor operated by the camera 5 is output to the internal screen monitor 7, the key 8 and the microphone 3, the internal and external speakers 1, (6) enables voice calls. That is, when the bell rings and receives the key 8, the user can make a voice call while watching the visitor through the monitor 7.

On the other hand, the absent guidance message for the automatic response when the visitor comes through the key phone (8) in advance to store in the data storage medium 300, and set the automatic response mode during the absence of the absence guidance message output and visitor information is stored Let's do it.

If the visitor presses the bell button 1 during absence, the HA controller 2 controls the answering machine mode. According to the auto answer mode, the HA controller 2 applies an auto answer control signal to the A / V controller 500, and the A / D controller 500 reads the out-of-office guidance message previously stored in the storage medium 300. The A / V decoder 400 restores the control and outputs it through the connection unit 100. Accordingly, the missed guidance message output through the connection unit 100 is output to the external loudspeaker 6, the visitor can listen to the guide message of the absence, and take action according to the guidance.

In addition, the HA controller 2 operates the camera 5 and the microphone 3 according to the information storage mode to control the A / V information of the visitor to be output through the connection unit 100, and the A / V controller 500 ) Controls the A / V information of the visitor output through the connection unit 100 to be compressed in the A / V encoder 200 and stored in the data storage medium 300. Accordingly, the visitor information is stored in the data storage medium 300. The storage time may be limited to a predetermined time in advance, or press the bell button (1) after the start of storage by the program can be controlled to complete the storage.

Herein, the connection unit 100 is configured to operate as a bidirectional communication path capable of simultaneously inputting / outputting A / V signals between the HA system and the respective units, and the data storage medium 300 also guides the user to the absence. It can be divided into a memory for storing messages and a memory for storing A / V signals for visitors.

Accordingly, when the visitor presses the bell, the missed guidance message is output and the storage mode is operated to store the A / V signal for the visitor in the data storage medium 300 while the missed guidance message is output to the visitor. . This operation characteristic is that even if the visitor presses the bell and leaves no message, the video information of the visitor is automatically stored, and the user can know whether the visitor came in the absence.

If the user requests reproduction of the stored visitor information, the HA controller 2 detects this requirement and applies a control signal to reproduce the visitor information stored in the A / V controller 500. Accordingly, the A / V controller 500 searches for the visitor information compressed and stored in the data storage medium 300, restores the visitor information from the A / V decoder 400, and outputs the visited information to the HA system through the connection unit 100. Visitor information output through the connection unit 100 is the appearance of the visitor to the screen monitor 7, the visitor's voice is output to the internal loudspeaker (⑷) so that the user can know the information of the stored visitor.

The operation of the A / V encoder 200 will be described with reference to FIG. 2 as follows.

The analog video signal input through the connection unit 100 is converted into a digital video signal by the video A / V converter 211 and preprocessed in a form necessary for compression encoding by the preprocessor 212. The preprocessed video signal is frequency-resolved by the DCT unit 213, and the frequency-analyzed video signal is quantized by a matrix value of weights by the quantization unit 214. The coder 215 allocates a short bit per code to a code with a high frequency and a long bit per code to a bit with a low frequency. Perform statistical coding to approximate the amount of information you have. The quantized and coded data values are made and output from the video frame unit 271 as a bit stream conforming to a predetermined format including frame header information, quantization information, and encoding information.

In addition, the audio signal in the analog state input through the connection unit 100 is converted into a digital signal by the audio A / D converter 221, and separated into 32 subbands by the subband analyzer 222, and each sub You will have 36 samples per band. At this time, the psychoacoustic modeling unit 223 extracts a periodic component and an aperiodic component for each subband by FFT calculation, and allocates bits by measuring NMR (Noise-to-Maskign Ratio) for each subband using two components. do. With the allocated bits, the quantization unit 224 quantizes the audio signal divided into subbands to a predetermined value. The quantized audio signal is encoded by the encoder 225, and is then output by the audio frame generator 226 into an audio bit stream including header information, additional information for compression encoding, and compressed bit information.

In this way, the audio signal compressed into the audio bit stream by the audio compressor 220 and the video signal compressed into the video bit stream by the video compressor 210 are transported by the multiplexer 230. Is multiplexed with.

Therefore, the A / V signal can be compressed up to 10 to 1 to maximize the efficiency of the storage medium, so that a large amount of visitor information can be stored even with a small amount of memory, thereby reducing the production cost.

Next, the operation of the A / V decoder 400 of the present invention will be described with reference to FIG.

The A / V information stored in the TS (Transport Stream) state in the data storage medium 300 is separated into an audio bit stream and a video bit stream by the demultiplexer 410. The audio frame analyzer 431 analyzes header information, quantization information, and encoding information of the audio bitstream from the separated audio bitstream. The information is converted into an audio signal decoded and dequantized by the decoder and inverse quantizer 432, and converted into an audio signal of digital data of the original signal by the filter synthesizer 433. The audio signal, which is digital data of the original signal, is converted into an analog audio signal by the audio D / A converter 434 and output.

In addition, the video bit stream separated by the demultiplexer 410 is analyzed by header information, quantization information, and encoding information of the video bit stream by the video frame analyzer 421, and extracted by the IDCT unit 422 as a video signal. do. The extracted quantized and encoded video signals are decoded by the decoder 423, and the decoded video signals are dequantized by the dequantizer 424. In this case, the decoder parameter 425 provides the decoder 423 and the dequantizer 424 with parameters necessary for decoding and inverse quantization. The decoded and inversely quantized video data signal is converted into an analog video signal by the video D / A converter 426 and output.

On the other hand, Figure 4 is a procedure showing a control method of the automatic response control apparatus according to the present invention. As shown in FIG. 4, the method determines whether there is bell information (S1), if there is bell information, determines whether the answering machine is set up (S2), and when the answering machine is set, outputting an out of office notice message ( S3) and determining whether to store the visitor information when the missed guidance message is output (S4), storing the visitor information when the visitor information storage is set (S5), and determining whether to play the stored information. Performing step S6, reproducing and outputting the stored information when the stored information is to be reproduced (S7), and determining whether to terminate the stored information reproducing request when the user confirms the reproduced information (S8). It is characterized by.

When the visitor presses the bell 1, the bell information is transmitted to the HA controller 2 in the bell information determination step S1, and the HA controller 2 transmits the bell information to the A / V controller 500. If there is bell information, the A / V controller 500 checks whether the auto answer is set in the auto answer setting determination step (S2).

If the automatic response is set, the A / V controller 500 sends a control signal in the absence guide message output step (S3) to find the missed guide message stored in the data storage medium 300 and the A / V decoder 400. Restore from. The restored absence guidance message is output to the external loudspeaker 6 through the connection unit 100. Accordingly, the visitor hears the missed guidance message.

If the absence guidance message is output, the visitor information storage mode setting step (S4) A / V controller 500 checks whether the information storage mode is set in the storage medium (300). When the visitor information storage mode is set, in the data storage step (S5), the HA controller 2 operates the camera 5 and the microphone 3 according to the visitor information storage mode to receive the visitor's state and voice and to access the connection unit. The control unit 100 outputs the data through the control unit 100, and the A / V controller 500 controls the A / V signal of the visitor output through the connection unit 100 to be compressed by the encoder 200 and stored in the data support medium 300. do. Accordingly, the visitor information is stored in the data storage medium 300.

On the other hand, in the storage information reproduction request determination step (S6), the HA controller 2 checks whether the user requests reproduction of the visitor stored information through the operation of the key phone 8. In the case of requesting reproduction of stored visitor information, in the visitor information reproduction step S7, the HA controller 2 detects this requirement and applies a control signal to reproduce the visitor information stored in the A / V controller 500. Accordingly, the A / V controller 500 controls the visitor information compressed and stored from the data storage medium 300 to be restored in the A / V decoder 400 and output to the HA system through the connection unit 100.

As such, the visitor information output through the connection unit 100 is output to the screen monitor 7 and the visitor's voice to the internal loudspeaker 4 so that the user can know the stored visitor's information. After the visitor information is reproduced and viewed by the user, the termination judgment step (S8) of the visitor information reproduction request checks whether the visitor information reproduction request is terminated.

The present invention is an A / V automatic response control device of the HA system,

First, there is a function of the absence guidance message, it is effective to give a friendly guidance to visitors in the absence.

Second, the visitor in the absence can leave his appearance and the purpose of visit, thereby achieving the desired purpose of visit.

Third, the user can check the visitor during the absence through the visitor information, thereby enabling the user to appropriately deal with the visitor's condition.

Fourth, even if the visitor just presses the bell, the visitor's appearance and voice are automatically stored, so that the user can cope with such visitor appropriately.

Fourth, since the A / V signal can be compressed up to 10 to 1 to maximize the efficiency of the storage medium, a small amount of memory can be used to store a lot of visitor information, thereby reducing the production cost.

The present invention provides a home automation system that can make a voice call while viewing a visitor's appearance, which is connected to an HA system, provides a visitor with an absence message and provides a visitor's appearance and voice to a storage medium. It is an object of the present invention to provide an A / V automatic response control apparatus and a control method of an HA system that can be stored and reproduced in the system.

Claims (11)

The HA system that allows voice calls while viewing the visitor through a monitor, the connection means for connecting the HA system and the A / V signal for the visitor to be input and output, and the input A / V signal. A / V compression means for compressing at a bit rate, data storage means for receiving and storing the compressed A / V signal, and restoring the stored compressed A / V signal to the HA system through the connection unit. And A / V restoring means, and A / V control means for exchanging control signals with the HA system to compress / store A / V signals, and restore and output the A / V signals. A / V automatic response device of HA system that stores / replays visitor information. The A / V automatic answering device of the HA system according to claim 1, wherein the connection means comprises two-way communication means capable of simultaneously inputting / outputting the A / V signal of the HA system. The HA system of claim 1, wherein the data storage means is divided into a memory for storing missed announcement message information input by a user in advance, and a memory for storing A / V signals for a visitor. V Answering device. 2. The apparatus of claim 1, wherein the long-term A / V compression means includes audio compression means for compressing an audio signal of the A / V signal input through the connection means into an audio bit stream, and video compression means for compressing the video signal into a video bit stream. And multiplexing means for multiplexing the compressed audio signal and the video signal. 5. The video compression means according to claim 4, wherein the video compression means includes video A / D return means for converting the input analog video signal into a digital video signal, preprocessing means for preprocessing the video signal converted into a digital signal, and a preprocessed video signal. DCT means for performing a frequency analysis of the quantum, quantization means for quantizing the frequency-analyzed result, encoding means for encoding the quantized data value, compression parameter providing means for providing parameters to the quantization means and the encoding means; And a video frame generation means for outputting the quantized and encoded data values into a bit stream. 5. The apparatus of claim 4, wherein the audio compression unit comprises: audio A / D conversion means for converting an input analog audio signal into a digital audio signal, subband analysis means for separating the audio signal converted into a digital signal into subbands; Quantization means for quantizing the subband separated audio signal, encoding means for encoding the quantized audio signal, psychoacoustic modeling means for providing the number of bits to the quantization means and the encoding means, quantized and encoded audio A / V automatic response control device of an HA system, characterized in that the audio frame generating means for outputting the signal as a bit stream. The apparatus of claim 1, wherein the A / V restoring means comprises demultiplexing means for separating the stored information read from the data storage means into an audio bit stream and a video bit stream, audio restoring means for restoring the audio bit stream, and video. A / V automatic response control device of the HA system, characterized in that the video recovery means for restoring the bit stream. 8. The apparatus of claim 7, wherein the audio restoring means comprises: audio frame analysis means for analyzing the audio bit stream separated by the demultiplexing means; decoding and dequantization means for decoding and dequantizing the analyzed audio signal; Filter synthesizing means for resynthesizing the quantized audio signal and converting it into the digital value of the original audio signal, and audio D / A converting means for converting the audio signal converted into the digital value of the original signal into an analog audio signal. A / V automatic response control device of HA system. 8. The apparatus of claim 7, wherein the video reconstruction means comprises: video frame analysis means for analyzing a video bit stream separated by the demultiplexing means, means for extracting a video signal from the analyzed information, and decoding the extracted video signal. Decoding means, dequantization means for inverse quantization of the decoded video signal, reconstruction parameter providing means for providing parameters to the decoding means and the dequantization means, and analog data of the decoded and dequantized digital state video data signal. A / V automatic response control apparatus for an HA system, characterized by comprising video D / A conversion means for converting into a video signal. Determining whether there is ring information (S1), determining whether the answer information is set when there is bell information (S2), outputting an out-of-office notice message (S3) when the answering machine is set, and providing an out-of-office guidance message. If it is output to determine whether the visitor information storage settings (S4), and if the visitor information storage settings step (S5) for storing the visitor information, determining whether or not to play the stored information (S6) and Reproducing and outputting the stored information in the case of storing information reproducing request (S7), and determining whether to terminate the storing information reproducing request (S8) when the user confirms the reproduced storing information. A / V auto response control method of HA system. The method of claim 10, wherein the outputting of the absence guide message (S3) and the storing of the visitor information (S5) are performed during the step of outputting the absence guide message (S3) A / V for the visitor A / V automatic response control method of the HA system, characterized in that the step of storing the signal (S5) together.