Broadcast receiving system

[0001] [Technical field to which the invention belongs] The present invention relates to a broadcast receiving device with a telephone function having a function as a hands-free telephone. [0002] [Conventional technology] As an application of the technology for recording broadcast programs such as televisions, as shown in JP-A-7-034503, a timer is used, and as shown in JP-A-11-250525 and JP-A-2000-175141, There are those that automatically record according to the user's preference set in advance, and those that can control the recording function via a line or network as shown in Japanese Patent Application Laid-Open No. 2000-350142. [0003] [Problems to be Solved by the Invention] However, there is currently no method for automatically recording a program in consideration of the user's behavior. For example, if there is a visitor while the user is watching a TV program, or if the user is out of the position where he / she can watch TV for a while, the recording mode must be set each time. [0004] Therefore, the present invention uses an echo canceller function to realize a function as a hands-free telephone, automatically records and records a program in consideration of the user's behavior and environment, and adjusts the volume. It is an object of the present invention to provide a broadcast receiving device capable of capable. [0005] [Means for solving problems] In order to achieve the above object, the invention according to claim 1 has a broadcast receiving means for receiving a broadcast in an analog or digital signal, an echo canceller means, and a residual echo amount in the echo canceller means at a constant level. The most important feature is a broadcast receiving device provided with a determination means having a function of recording and recording the contents of a broadcast program in the storage means for determining that. [0006] The invention according to claim 2 comprises an amplifier that changes the volume of the speaker, and the echo canceller means has a function of changing the amplification factor of the amplifier in order to raise the volume of the speaker when double talk is detected. The main feature is a broadcast receiver. [0007] The invention according to claim 3 is characterized in that the broadcast receiving device according to claim 1 is provided with a storage means for recording the contents of a broadcast program and a switch means for selecting whether or not to record. [0008] A main feature of the invention according to claim 4 is the broadcast receiving device according to claim 2, which is provided with a switching means for selecting whether or not to change the amplification factor of the amplifier at the time of double talk detection. [0009] The invention according to claim 5 comprises the broadcast receiving device according to claim 1, wherein the determination means recognizes that the intercom has been pressed and has a function of recording and recording the contents of a broadcast program in the storage means. It is the main feature. [0010] The main feature of the invention according to claim 6 is the broadcast receiving device according to claim 1, which includes a clock means for measuring the recording of the contents of a broadcast program and the time when the recording is started, and a display means for displaying the fact. To do. [0011] BEST MODE FOR CARRYING OUT THE INVENTION The present invention uses an echo canceller unit equipped to realize a function as a hands-free telephone as a behavior detector of a user. As shown in FIG. 1, the adaptive filter of the echo canceller section can eliminate the echo if the transfer function H (z) is constant. However, when the transfer function H (z) changes, a residual echo occurs until the adaptive filter follows. As a factor that changes the transfer function H (z), it is conceivable that an object (which may be considered as a user in the present invention) moves in space. [0012] Therefore, the present invention makes use of this feature to activate the echo cancel function during broadcast reception, and when the residual echo amount exceeds a certain level, the user (broadcast program viewer) watches TV during that time. It provides a broadcast receiving device having a function of automatically recording and recording broadcast contents by recognizing that the position where it can be removed has been removed. [0013] Further, the present invention recognizes that the user's environment is under noise when the state of the echo canceller becomes double talk in the broadcast receiving device with a telephone function having a function as a hands-free telephone, and automatically adjusts the volume. To adjust (larger). [0014] As shown in Fig. 2, the echo canceller is in a "double talk" state in which the coefficient of the adaptive filter is not updated when sound other than echo (which can be considered as ambient noise in the present invention) is input from the microphone. Therefore, the present invention provides a broadcast receiving device having a function of increasing the volume in order to make it easier for the user (broadcast program viewer) to hear the sound of the broadcast content when the double talk is detected. In addition, the contents of the present invention will be described in the following embodiments. [0015] Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram of a broadcast receiving device according to the first embodiment of the present invention. This broadcast receiver has a display unit 1 that displays a broadcast program as visual information to the user, a broadcast receiver 2 that receives broadcasts in analog or digital signals, a microphone 3 for collecting echoes from speakers, and an echo canceller. Monitors the state of the echo canceller unit 4, the speaker 5 for transmitting the sound (voice) in the broadcast program to the user as auditory information, and the echo canceller unit 4, and detects that the residual echo has changed suddenly. It is provided with a determination unit 6 for determining whether to start recording, and a storage unit 7 for storing data to be recorded and recorded. It is convenient to use a hard disk as the storage unit 7 because it is possible to prevent the recording medium from being forgotten to be inserted, which was generated by the cassette tape. [0016] Next, the operation will be described. The broadcast content received from the antenna is modulated by the broadcast receiver 2. The modulated broadcast content is divided into image information and acoustic (audio) information, and the image information is displayed on the display unit 1. The acoustic (voice) information is once input to the echo canceller unit 4, used as a reference for calculating the adaptive filter coefficient, and then output by the speaker 5. The echo from the speaker 5 is collected by the microphone 3 and sent to the echo canceller unit 4, where echo cancellation processing is performed. Here, when the residual echo changes suddenly, the state of the echo canceller unit 4 (power value of the residual echo) is transferred to the determination unit 6, and when the echo power exceeds a certain threshold value, it is described above. It is determined that the user has moved in this way, recording and recording are started, and the broadcast content is saved in the storage unit 7. [0017] FIG. 4 is a block diagram of the broadcast receiving device according to the second embodiment of the present invention. This broadcast receiver has a display unit 1 that displays a broadcast program as visual information to the user, a broadcast receiver 2 that receives broadcasts in analog or digital signals, a microphone 3 for collecting echoes from speakers, and an echo canceller. Echo canceller unit 4 that realizes the above, speaker 5 for transmitting the sound (voice) in the broadcast program to the user as auditory information, and the state of the echo canceller unit 4 are monitored, and if it is in the double talk state, the output level of the speaker It is equipped with an amplifier 8 that increases (volume). [0018] Next, the operation will be described. The broadcast content received from the antenna is modulated by the broadcast receiver 2. The modulated broadcast content is divided into image information and acoustic (audio) information, and the image information is displayed on the display unit 1. The acoustic (voice) information is once input to the echo canceller unit 4, used as a reference for calculating the adaptive filter coefficient, and then output by the speaker 5. The echo from the speaker 5 and the ambient sound are collected by the microphone 3 and sent to the echo canceller unit 4. Here, when double talk is detected, it is determined that the user is under noise, the amplification factor of the amplifier 8 is changed, and the volume is automatically increased. [0019] FIG. 5 is a block diagram of the broadcast receiving device according to the third embodiment of the present invention. This broadcast receiver has a display unit 1 that displays a broadcast program as visual information to the user, a broadcast receiver 2 that receives broadcasts in analog or digital signals, a microphone 3 for collecting echoes from speakers, and an echo canceller. Monitors the state of the echo canceller unit 4, the speaker 5 for transmitting the sound (voice) in the broadcast program to the user as auditory information, and the echo canceller unit 4, and detects that the residual echo has changed suddenly. It is equipped with a judgment unit 6 that determines whether to start recording, a storage unit 7 for storing recording and data to be recorded, and a switch 9 that allows the user to turn on / off the automatic recording and recording functions. .. [0020] Next, the operation will be described. The broadcast content received from the antenna is modulated by the broadcast receiver 2. The modulated broadcast content is divided into image information and acoustic (audio) information, and the image information is displayed on the display unit 1. The acoustic (voice) information is once input to the echo canceller unit 4, used as a reference for calculating the adaptive filter coefficient, and then output by the speaker 5. The echo from the speaker 5 is collected by the microphone 3 and sent to the echo canceller unit 4, where echo cancellation processing is performed. Here, when the residual echo changes suddenly, the state of the echo canceller unit 4 (power value of the residual echo) is transferred to the determination unit 6, and when the echo power exceeds a certain threshold value, the switch 9 If it is turned on, it starts recording and recording, and saves the broadcast contents in the storage unit 7. On the other hand, if the switch 9 is off, nothing is done. [0021] [0021] FIG. 6 is a block diagram of a broadcast receiving device according to a fourth embodiment of the present invention. This broadcast receiver has a display unit 1 that displays broadcast programs as visual information to the user, a broadcast receiver that receives broadcasts in analog or digital signals, a microphone 3 for collecting echoes from speakers, and an echo canceller. The echo canceller section 4 to be realized, the speaker 5 for transmitting the sound (voice) in the broadcast program to the user as auditory information, and the echo canceller section 4 are monitored, and if it is in the double talk state, the output level of the speaker ( It is equipped with an amplifier 8 that increases the volume) and a switch 10 that allows the user to turn on / off the function that automatically adjusts the volume. [0022] Next, the operation will be described. The broadcast content received from the antenna is modulated by the broadcast receiver 2. The modulated broadcast content is divided into image information and acoustic (audio) information, and the image information is displayed on the display unit 1. The acoustic (voice) information is once input to the echo canceller unit 4, used as a reference for calculating the adaptive filter coefficient, and then output by the speaker 5. The echo from the speaker 5 and the ambient sound are collected by the microphone 3 and sent to the echo canceller unit 4. Here, when double talk is detected, the state of switch 10 is checked, and if it is turned on, it is judged that the user is under noise, the amplification factor of amplifier 8 is changed, and the volume is automatically increased. To do. On the other hand, if the switch 10 is off, nothing is done. [0023] FIG. 7 is a block diagram of the broadcast receiving device according to the fifth embodiment of the present invention. This broadcast receiver has a display unit 1 that displays a broadcast program as visual information to the user, a broadcast receiver 2 that receives broadcasts in analog or digital signals, a microphone 3 for collecting echoes from speakers, and an echo canceller. Monitors the state of the echo canceller unit 4, the speaker 5 for transmitting the sound (voice) in the broadcast program to the user as auditory information, and the echo canceller unit 4, and detects that the residual echo has changed suddenly. It is equipped with a determination unit 6 for determining whether to start recording or recording, a storage unit 7 for storing recording or recording target data, and an interphone 11 installed at the user's home. [0024] Next, the operation will be described. The broadcast content received from the antenna is modulated by the broadcast receiver 2. The modulated broadcast content is divided into image information and acoustic (audio) information, and the image information is displayed on the display unit 1. The acoustic (voice) information is once input to the echo canceller unit 4, used as a reference for calculating the adaptive filter coefficient, and then output by the speaker 5. The echo from the speaker 5 is collected by the microphone 3 and sent to the echo canceller unit 4, where echo cancellation processing is performed. Here, when the residual echo changes suddenly, the state of the echo canceller unit 4 (power value of the residual echo) is transferred to the determination unit 6, and when the echo power exceeds a certain threshold value, recording is performed. Recording is started and the broadcast contents are saved in the storage unit 7. Further, when the intercom 11 is pressed, the determination unit 6 recognizes that the user has a visitor and the user has left the seat, starts recording, starts recording, and saves the broadcast content in the storage unit 7. To do. [0025] FIG. 8 is a block diagram of the broadcast receiving device according to the sixth embodiment of the present invention. This broadcast receiver has a display unit 1 that displays a broadcast program as visual information to the user, a broadcast receiver 2 that receives broadcasts in analog or digital signals, a microphone 3 for collecting echoes from speakers, and an echo canceller. Monitors the state of the echo canceller unit 4, the speaker 5 for transmitting the sound (voice) in the broadcast program to the user as auditory information, and the echo canceller unit 4, and detects that the residual echo has changed suddenly. It is provided with a determination unit 6 for determining whether to start recording or recording, a storage unit 7 for storing recording or recording target data, and an internal clock 12 for indicating recording or recording start time. [0026] Next, the operation will be described. The broadcast content received from the antenna is modulated by the broadcast receiver 2. The modulated broadcast content is divided into image information and acoustic (audio) information, and the image information is displayed on the display unit 1. The acoustic (voice) information is once input to the echo canceller unit 4, used as a reference for calculating the adaptive filter coefficient, and then output by the speaker 5. The echo from the speaker 5 is collected by the microphone 3 and sent to the echo canceller unit 4, where echo cancellation processing is performed. Here, when the residual echo changes suddenly, the state of the echo canceller unit 4 (power value of the residual echo) is transferred to the determination unit 6, and when the echo power exceeds a certain threshold value, recording is performed. Recording is started and the broadcast contents are saved in the storage unit 7. Here, the time when the recording and recording are started and the message "automatic recording and recording are started" are sent to the display unit 1 to inform the user. [0027] [Effect of the invention] According to the invention of claim 1, it is determined and stored that the residual echo amount in the broadcast receiving means for receiving the broadcast in the analog or digital signal, the echo canceller means, and the echo canceller means has reached a certain level. Since the means is provided with a determination means having a function of recording and recording the contents of the broadcast program, the program can be automatically recorded and recorded in consideration of the user's behavior. [0028] According to the invention of claim 2, the amplifier for varying the volume of the speaker is provided, and the echo canceller means has a function of changing the amplification factor of the amplifier in order to increase the volume of the speaker when double talk is detected. When a person is in a noisy environment, the volume of the speaker is automatically increased, so that the content of the broadcast program can be easily heard. [0029] According to the invention of claim 3, since the storage means is provided with a switch means for recording the contents of the broadcast program and selecting whether or not to record the contents, the user (broadcast program viewer) can record the program while working. When watching, it is possible to prevent the recording and recording mode from being unintentionally entered. [0030] According to the invention of claim 4, since the switch means for selecting whether or not to change the amplification factor of the amplifier at the time of double talk detection is provided, the user (broadcast program viewer) can play the program while making a sound. When watching, it is possible to prevent the volume of the speaker from being unintentionally increased. [0031] According to the invention of claim 5, the intercom is provided, and the determination means has a function of recognizing that the intercom has been pressed and recording the contents of the broadcast program in the storage means, so that the information from the intercom can be recorded. By incorporating it, the behavior of the user can be predicted accurately, and recording can be performed from an early stage. [0032] According to the invention of claim 6, since the recording of the contents of the broadcast program, the clock means for measuring the time when the recording is started, and the display means for displaying the fact are provided, the user can use the displayed message. Depending on the content, it is possible to know that automatic recording and recording are being performed while the viewing position is removed, and that the content can be viewed. [Simple explanation of drawings] FIG. 1 is an explanatory diagram of a residual echo of an echo canceller. FIG. 2 is an explanatory diagram of double talk. FIG. 3 is a block diagram of a broadcast receiving device according to the first embodiment of the present invention. FIG. 4 is a block diagram of a broadcast receiving device according to a second embodiment of the present invention. FIG. 5 is a block diagram of a broadcast receiving device according to a third embodiment of the present invention. FIG. 6 is a block diagram of a broadcast receiving device according to a fourth embodiment of the present invention. FIG. 7 is a block diagram of a broadcast receiving device according to a fifth embodiment of the present invention. FIG. 8 is a block diagram of a broadcast receiving device according to a sixth embodiment of the present invention. [Explanation of symbols] 1 Display 2 Broadcast receiver (broadcast receiver) 3 microphone 4 Echo canceller section (echo canceller means) 5 speakers 6 Judgment unit (judgment means) 7 Storage unit (storage means)