JP2010074551A - Television receiver and recording method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To record a video image and sound in predetermined timing by simple structure and without forcing a complicated operation upon a user. <P>SOLUTION: A television receiver includes a camera 5 and a microphone 6 inside, and when a motion or a face is detected from frame image data V1 picked up by the camera, records video data VD11 corresponding to the frame image data V1 picked up by the camera and audio data AD11 corresponding to audio data AV1 collected by the microphone, thereby automatically records the video data VD11 and the audio data AD11 by simple structure and without forcing the complicated operation upon the user. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a television receiver and a recording method, and is suitable for application to a television receiver incorporating a camera and a microphone, for example.

  2. Description of the Related Art Conventionally, in a security device, a camera and a microphone are provided separately, and the camera and microphone are connected to, for example, a television receiver via a predetermined cable.

  In this television receiver, the video imaged by the camera is displayed on the display unit of the television receiver, and the sound collected by the microphone is output from the speaker of the television receiver.

  In addition, in the security device, a camera and a microphone are connected to a transmitter that outputs a VHF (Very High Frequency) radio wave, and an image captured by the camera and a sound collected by the microphone are transmitted by the transmitter to a VHF radio wave. And the resulting VHF signal is emitted by the transmitter.

When the television receiver receives the VHF signal radiated from the transmitter via the antenna, the television receiver displays a video obtained by performing a predetermined process on the VHF signal on the display unit, and transmits the sound from the speaker. For example (see Patent Document 1).
Japanese Patent Laid-Open No. 9-62949

  By the way, in the television receiver in which the camera and the microphone described above are connected via a cable, there is a problem that, for example, the user is forced to perform complicated work of connecting the camera and the microphone with a cable at the time of initial setting.

  Also, in a television receiver that receives video captured by a camera and sound collected by a microphone as a VHF signal, a transmitter for radiating the VHF signal must be provided on the camera and microphone side. There was a problem that the configuration was complicated.

  The present invention has been made in consideration of the above points, and proposes a television receiver and a recording method capable of recording video and audio at a predetermined timing with a simple configuration and without complicating the user. It is something to try.

  In order to solve such a problem, in the television receiver of the present invention, the video unit based on the television broadcast signal is displayed on the display unit, the audio unit based on the television broadcast signal is output from the speaker, and the surrounding video A camera provided inside itself to pick up images, a microphone provided inside itself to collect surrounding sounds, a detection unit for detecting movement based on video captured by the camera, and a detection unit When a motion is detected, a recording unit is provided for recording video captured by the camera and audio collected by the microphone.

  In the recording method of the present invention, a detection step of detecting a motion based on a video imaged by a camera provided inside the camera so as to capture a surrounding video image, and when the motion is detected by the detection unit, And a recording step of recording in the storage unit the sound collected by the microphone provided therein so as to collect the image picked up by the above and the surrounding sound.

  As a result, when motion is detected from the video captured by the camera built in the camera, the video automatically captured by the camera and the sound collected by the microphone built in the camera are recorded. be able to.

  Furthermore, in the television receiver of the present invention, the video unit based on the television broadcast signal is displayed on the display unit, the audio unit based on the television broadcast signal is output from the speaker, and the surrounding video is captured by itself. A camera provided inside, a microphone provided inside itself for collecting surrounding sounds, a detection unit for detecting the face of the subject based on an image captured by the camera, and a face of the subject by the detection unit And a recording unit for recording the video imaged by the camera and the voice collected by the microphone.

  Furthermore, in the recording method of the present invention, a detection step of detecting the face of the subject based on the video imaged by a camera provided therein so as to capture the surrounding video image, and the face of the subject is detected by the detection unit. Then, a recording step for recording in the storage unit the sound collected by the microphone provided therein so as to collect the image captured by the camera and the surrounding sound is provided.

  As a result, when the subject's face is detected from the video captured by the camera built in itself, the video automatically captured by the camera and the sound collected by the microphone built in the camera are displayed. Can be recorded.

  According to the present invention, when a motion is detected from an image captured by a camera incorporated in the device, the image automatically captured by the camera and the sound collected by the microphone incorporated in the device. Therefore, it is intended to propose a television receiver and a recording method that can record video and audio at a predetermined timing with a simple configuration and without forcing the user to perform complicated operations.

  Further, according to the present invention, when a subject's face is detected from an image captured by a camera incorporated in the device, the image automatically captured by the camera and a sound collected by the microphone incorporated in the device are collected. A television receiver and a recording method capable of recording the recorded audio and recording the video and audio at a predetermined timing with a simple structure and without forcing the user to perform complicated operations. It is.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) First Embodiment (1-1) Overall Configuration of Television Receiver As shown in FIG. 1, the television receiver 1 according to the first embodiment of the present invention displays an image. LCD (Liquid Crystal Display) 2 and speakers 3 are provided on the left and right of the LCD 2.

  Further, the television receiver 1 is provided with a remote control light receiving unit 4 at the lower right of the LCD 2, and infrared light emitted from a remote controller (not shown) (hereinafter also referred to as a remote control) is transmitted through the remote control light receiving unit 4. It is made to receive light through.

  In addition to such a configuration, the television receiver 1 is provided with a camera 5 and a microphone 6 above the LCD 2, and displays an image picked up by the camera 5 on the LCD 2 and is collected by the microphone 6. Sound can be output from the speaker 3.

(1-2) Circuit Configuration of Television Receiver As shown in FIG. 2, the control unit 7 having a CPU (Central Processing Unit) configuration performs overall control including the television unit 10 and the monitoring unit 20 and the like. Has been made.

  As a result, the control unit 7 of the television receiver 1 performs a normal television broadcast reception display process by the digital television broadcast reception unit 30 of the television unit 10. In addition, the control unit 7 performs a recording process in which an image is captured by the camera 5 by the monitoring unit 20 and a sound is collected by the microphone 6, a reproduction process in which the image and the sound are reproduced by the monitoring unit 20, and the like. ing.

  In the television receiver 1, when the digital television broadcast receiving unit 30 receives and displays the television broadcast, the terrestrial digital broadcast broadcast wave S 1 received via the antenna 31 is received at a predetermined level by an RF (Radio Frequency) receiving unit 32. Is converted into a broadcast signal S2 and sent to the demodulator 33.

  The demodulator 33 reconstructs the digital multiplexed data S3 by demodulating the broadcast signal S2 according to a predetermined demodulation method in accordance with the demodulation control signal from the controller 7, and sends it to the demultiplexer 34.

  At this time, when the control unit 7 receives the remote control signal indicating the station selection destination of the broadcast station transmitted from the remote controller via the remote control light receiving unit 4, the control unit 7 receives the channel selection video data, audio data, and the like. Is output from the digital multiplexed data S3.

  In response to this, the demultiplexer 34 demultiplexes the digital multiplexed data S3 into video data VD1, audio data AD1, channel data CD1, and EPG (Electric Program Guide) data ED1.

  The demultiplexing unit 34 sends the video data VD1 to the television video decoding unit 35, sends the audio data AD1 to the television audio decoding unit 36, and sends the channel data CD1 and the EPG data ED1 to the control unit 7.

  The TV video decoding unit 35 decodes the video data VD1 according to a predetermined method, and sends a video signal VD2 obtained as a result to the video switch 11.

  The video switch 11 is configured to send the video signal VD2 supplied from the TV video decoding unit 35 to the video mixer 12 when the digital television broadcast receiving unit 30 receives and displays the television broadcast.

  Further, the control unit 7 acquires related information related to terrestrial digital broadcasting such as a television program guide, a broadcasting station name, and a channel number based on the channel data CD1 and the EPG data ED1 supplied from the demultiplexing unit 34.

  Then, the control unit 7 generates display image data IM1 to be superimposed on the video signal VD2 based on related information related to terrestrial digital broadcasting, and the display image data IM1 is superimposed on the video signal VD2. The information is transmitted to the OSD (On Screen Display) display generation unit 13 together with the transmission ratio information α.

  The OSD display generating unit 13 processes the display image data IM1 supplied from the control unit 7 according to the transmittance of the ratio information α, and sends the display image data IM2 having a predetermined transmittance to the video mixer 12.

  The video mixer 12 superimposes the video signal VD2 supplied from the video switch 11 by mixing the display image data IM2 supplied from the OSD display generation unit 13, and the resulting mixed video signal VD3. By outputting to the LCD 2, it is displayed as a program video.

  On the other hand, the TV audio decoding unit 36 decodes the audio data AD1 of the channel selection destination supplied from the demultiplexing unit 34 by a predetermined method, and sends out the audio signal AD2 obtained as a result to the audio switch 14.

  The audio switch 14 is configured to output the audio signal AD2 supplied from the TV audio decoding unit 36 as program audio from the speaker 3 when the digital TV broadcast receiving unit 30 receives and displays the television broadcast.

  By the way, the monitoring unit 20 includes a recording unit 40 and a reproduction unit 50. The recording unit 40 records video and audio, and the reproduction unit 50 reproduces the video and audio.

  The camera 5 of the recording unit 40 captures 30 frames per second with a resolution of, for example, a horizontal width of 1920 pixels and a vertical width of 1080 pixels, and sequentially detects the frame image data V1 obtained as a result sequentially. To the unit 42 and the video encoding unit 44.

  The motion detection unit 42 obtains, for example, an inter-frame difference between the frame image data V1 which are consecutively supplied from the frame image data V1 continuously supplied from the camera 5, and an inter-frame difference value obtained as a result of the inter-frame difference value and a predetermined value. By comparing the threshold value, motion between frames is detected. When the motion detection unit 42 detects a motion between frames, the motion detection unit 42 sends a motion detection signal MS to the determination unit 43.

  Based on the motion detection signal MS supplied from the motion detection unit 42, the determination unit 43 includes a start trigger signal TG1 indicating the recording start timing of the video captured by the camera 5 and the sound collected by the microphone 6. An end trigger signal TG2 indicating the recording end timing of the video and audio is sent to the recording control unit 41.

  On the other hand, the video encoding unit 44 compresses and encodes the frame image data V1 continuously supplied from the camera 5 to a resolution of, for example, a width of 640 pixels and a height of 480 pixels by the MPEG2 (Moving Picture Experts Group phase 2) method. The resulting video data VD11 is sent to the recording control unit 41.

  By the way, the microphone 6 sends out the audio signal A1 obtained by collecting the surrounding audio to the audio encoding unit 45.

  The audio encoding unit 45 compresses and encodes the audio signal A1 supplied from the microphone 6 into an MP2 (MPEG1 Layer 2) system having a sampling rate of 48 [kHz] and a bit rate of 128 [kbps], for example, and is obtained as a result. The audio data AD11 is sent to the recording control unit 41.

  The clock unit 46 counts time based on, for example, the time input by the user via the remote controller at the time of initial setting, and sends time data TS indicating the current time to the recording control unit 41.

  When the recording control unit 41 receives the start trigger signal TG1 from the determination unit 43, the video data VD11 supplied from the video encoding unit 44 and the audio data AD11 supplied from the audio encoding unit 45 are composed of, for example, a nonvolatile memory. Recording to the storage unit 47 starts.

  When receiving the end trigger signal TG2 from the determination unit 43, the recording control unit 41 ends the recording of the video data VD11 and the audio data AD11 in the storage unit 47.

  At this time, the recording control unit 41 records the video data VD11 and the audio data AD11 in the storage unit 47 as the video / audio file AV.

  Further, the recording control unit 41 can acquire the frame image data V1 before compression encoding from the video encoding unit 44, and can record the frame image data V1 in the storage unit 47 in association with the video / audio file AV as still image data PD. It is made like that.

  Further, the recording control unit 41 indicates time data (hereinafter, also referred to as start time data) TS1 indicating the time when the start trigger signal TG1 is received, and the time when the end trigger signal TG2 is received. The time data (hereinafter also referred to as end time data) TS2 is acquired from the clock unit 46.

  The recording control unit 41 records the start time data TS1 and the end time data TS2 acquired from the clock unit 46 in the storage unit 47 in association with the video / audio file AV.

  Here, the recording control unit 41 has a buffer memory for temporarily storing the audio data AD11, the time data TS, and the like. For this reason, for example, when the recording control unit 41 receives the start trigger signal TG1 from the determination unit 43, the recording control unit 41 records the recording data from the video data VD11 and the audio data AD11, for example, one second before receiving the start trigger signal TG1. It is made to be able to do.

  For example, when the playback control unit 51 of the playback unit 50 reads the video / audio file AV recorded in the storage unit 47 in response to a user's remote control operation, the video data VD11 of the video / audio file AV is sent to the recorded video decoding unit 52. At the same time, the audio data AD 11 of the video / audio file AV is sent to the recording audio decoding unit 53.

  The recorded video decoding unit 52 decodes the video data VD11 supplied from the reproduction control unit 51 according to a predetermined method, and sends a video signal VD12 obtained as a result to the video switch 11.

  The video switch 11 is configured to send the video signal VD12 supplied from the recorded video decoding unit 52 to the video mixer 12 during playback processing, and the video signal VD12 is recorded as a recorded video via the video mixer 12. Displayed on the LCD 2.

  On the other hand, the recording audio decoding unit 53 decodes the audio data AD11 supplied from the reproduction control unit 51 by a predetermined method, and sends out the audio signal AD12 obtained as a result to the audio switch 14.

  The audio switch 14 is configured to output the audio signal AD12 supplied from the recording audio decoding unit 53 as recording audio from the speaker 3 during reproduction processing.

  Incidentally, as shown in FIG. 3, the television receiver 1 is provided with a charger 63, a battery 64, and a power switch 65 in addition to an AC (Alternating Current) plug 61 and an AC-DC (Direct Current) converter 62. It has been.

  The AC-DC converter 62 is configured to supply power to the television unit 10, the charger 63, and the power switch 65 by converting alternating current supplied via the AC plug 61 into direct current. Therefore, the television unit 10 operates with the power supply supplied from the AC-DC converter 62.

  The charger 63 charges the battery 64 based on the power supply supplied from the AC-DC converter 62.

  The power switch 65 supplies the power supply power to the remote control light receiving unit 4, the control unit 7, and the recording unit 40 when power supply power is supplied from the AC-DC conversion unit 62 via the AC plug 61.

  When the power switch 65 cannot supply power from the AC-DC converter 62 via the AC plug 61 due to, for example, a power failure or when the AC plug 61 is disconnected from the outlet, the power charged to the battery 64 is received by remote control. The unit 4 is supplied to the control unit 7 and the recording unit 40.

  Therefore, the remote control light receiving unit 4, the control unit 7, and the recording unit 40 can operate by receiving power supply from the battery 64 even when a power failure or the AC plug 61 is disconnected from the outlet.

(1-3) Recording Process Using Motion Detection Next, the recording process using motion detection that is mainly executed by the recording unit 40 in accordance with control by the control unit 7 will be described in detail. For example, when the control unit 7 receives, via the remote control light receiving unit 4, a remote control signal supplied by pressing a power button for setting the power supply in the remote control to a standby state, the control unit 7 performs a recording process using motion detection. To do.

  The control unit 7 causes the camera 5 to acquire frame image data V1 obtained by imaging, and sequentially supplies the frame image data V1 to the motion detection unit 42.

  When the frame image data V1 is continuously acquired, the motion detection unit 42 obtains an inter-frame difference between the frame image data V1 that are adjacent to each other among the continuously acquired frame image data V1.

Specifically, as illustrated in FIG. 4A, the motion detection unit 42 acquires this time when the i−1 and i-th frame image data V1 _i−1 and V1 _i are continuously acquired from the camera 5. determined by the target frame image data V1 _i made by the image G1 was, the inter-frame difference between the frame image data V1 _i-1 made by the image G1 acquired previously.

Here, the frame image data V1 _i-1 and V1 _i are the same image G1. Therefore, the motion detection unit 42 does not detect the motion between frames by obtaining the inter-frame difference between the frame image data V1 _i-1 and V1 _i .

Then the motion detector 42 acquires the i + 1 th frame image data V1 i _{+ 1,} the frame image data V1 i _{+ 1} composed in this acquired image G2, between frames of the frame image data V1 _i made by the image G1 acquired previously Find the difference.

Here, the frame image data V1 _{i + 1} and V1 _i are different images G2 and G1, and the subject image DR of the door projected on the images G2 and G1 is moving. Therefore, the motion detection unit 42 detects a motion between frames by obtaining an inter-frame difference between the frame image data V1 _{i + 1} and the frame image data V1 _i, and sends a motion detection signal MS to the determination unit 43.

Subsequently, when the motion detection unit 42 acquires the _{i +} 2th frame image data V1 _{i + 2} , the motion detection unit 42 receives the frame interval between the frame image data V1 _{i + 2 including} the image G3 acquired this time and the frame image data V1 _{i + 1 including} the image G2 acquired last time. The difference is obtained, the motion between the frames is detected again, and the motion detection signal MS is sent to the determination unit 43.

Furthermore, when the motion detection unit 42 sequentially acquires i + 3,..., J−1 and jth frame image data V1 _{i + 3} ,..., V1 _j−1 and V1 _j , each time the motion detection unit 42 acquires the _{i + 3} ,. The frame image data V1 _{i + 3} ,..., V1 _j−1 and V1 _j are respectively obtained as inter-frame differences to detect a motion between frames, and a motion detection signal MS is sent to the determination unit 43. Incidentally, it is assumed that the frame image data V1 _j is an image G4, and the frame image data V1 _i to the frame image data V1 _j continuously change from the image G3 to the image G4.

Subsequently, when the motion detection unit 42 sequentially acquires j + 1,..., K−1 and kth frame image data V1 _{j + 1} ,..., V1 _k−1 and V1 _k , frame image data _V1 j + 1 to the front and rear, ..., it detects a motion between frames respectively determined frame difference of _{V1 k-1} and V1 _k, and sends the motion detection signal MS to the determination unit 43.

In addition, when the motion detection unit 42 sequentially acquires k + 1,..., L−1 and lth frame image data V1 _{k + 1} ,..., V1 _l−1 and V1 _l , each time they are acquired, the motion detection unit 42 moves forward and backward. The interframe differences of the frame image data V1 _{k + 1} ,..., V1 _l−1 and V1 _l are respectively obtained to detect the motion between frames, and the motion detection signal MS is sent to the determination unit 43.

Further, when the motion detection unit 42 sequentially acquires l + 1,..., M−1 and mth frame image data V1 _{l + 1} ,..., V1 _m−1 and V1 _m , the motion detection unit 42 moves back and forth each time it is acquired. The frame image data V1 _{1 + 1} ,..., V1 _m−1 and V1 _m are respectively obtained as inter-frame differences to detect a motion between frames, and a motion detection signal MS is sent to the determination unit 43.

Further, the motion detection unit 42 acquires m + 1,..., N−1, n, and n + 1th frame image data V1 _{m + 1} ,..., V1 _n−1 , V1 _n, and V1 _{n + 1} in order. each frame image data _V1 m + 1 that one behind the other in, · · _{·, V1 n-1,} V1 seeking _n and _{V1 n + 1} of the frame difference, respectively detects a motion between frames, the judgment unit 43 a movement detection signal MS Send it out.

Incidentally, the frame image data V1 _j , V1 _k , V1 _l , V1 _m , V1 _n and V1 _{n + 1} are composed of images G4, G5, G6, G7, G8 and G9, respectively. It is assumed that the frame image data V1 _i to the frame image data V1 _{n + 1} continuously change from the image G1 to the image G9.

Subsequently, the motion detection unit 42 obtains n + 2,..., N + 91,..., Frame image data V1 _{n + 2} ,..., V1 _{n + 91} ,. Each time the frame image data V1 _{n + 2} ,..., V1 _{n + 91} ,.

Motion detection unit 42 at this time, the frame image data _{V1 n + 2, ···, V1} n + 91, since ... is the same image G9, frame image data _{V1 n + 2, ···, V1} n + 91, in ... By obtaining the difference between the previous and next frames, the motion between frames is not detected, and therefore the motion detection signal MS is not sent to the determination unit 43.

  As shown in FIG. 4B, when the determination unit 43 receives the motion detection signal MS from the motion detection unit 42 twice in a predetermined time, for example, the frame images continuously acquired from the camera 5 are obtained. It is determined that the data V1 has moved, and a start trigger signal TG1 is sent to the recording control unit 41.

  Then, after sending the start trigger signal TG1 to the recording control unit 41, the determination unit 43 has no motion in the frame image data V1 acquired by the camera 5 when the motion detection signal MS is not supplied from the motion detection unit 42. to decide.

  Thereafter, when the motion detection signal MS is not supplied from the motion detection unit 42, for example, for 90 frames (in this case, 3 seconds), the determination unit 43 loses motion in the frame image data V1 acquired by the camera 5. The end trigger signal TG2 is sent to the recording control unit 41.

  As shown in FIG. 4C, the recording control unit 41 starts recording the video data VD11 supplied from the video encoding unit 44 in the storage unit 47 at the timing when the start trigger signal TG1 is received from the determination unit 43.

  Then, the recording control unit 41 ends the recording of the video data VD11 supplied from the video encoding unit 44 to the storage unit 47 at the timing when the end trigger signal TG2 is received from the determination unit 43.

Accordingly, the recording control unit 41 records in the storage unit 47 the video data VD11 obtained by compressing and encoding the frame image data V1 _{i + 2} composed of the image G3 to the frame image data V1 _{n + 91} composed of the image G9 by the video encoding unit 44. Become.

As shown in FIG. 4D, the recording control unit 41, for example, receives frame image data V1 (V1 _{i + 2} , V1 _j , V1 _k , V1 _l , V1) before compression encoding at predetermined intervals from the video encoding unit 44. _m and V1 _n ). Then, the recording control unit 41 converts the acquired frame image data V1 (V1 _{i + 2} , V1 _j , V1 _k , V1 _l , V1 _m and V1 _n ) into still image data PD (PD _{i + 2} , PD _j , PD _k , PD _l , PD _m and PD _n ) are recorded in the storage unit 47.

  Furthermore, as shown in FIG. 4E, when receiving the start trigger signal TG1 from the determination unit 43, the recording control unit 41 receives the start trigger signal TG1 temporarily stored in its own buffer memory. Recording is started in the storage unit 47 from the voice data AD11 one second before.

  When the recording control unit 41 receives the end trigger signal TG2 from the determination unit 43, the recording control unit 41 records the audio data AD11 for 1 second after receiving the start trigger signal TG2 in the storage unit 47, and the audio data End recording of AD11.

  Further, the recording control unit 41 acquires the start time data TS1 from the clock unit 46 at the timing when the start trigger signal TG1 is received, and acquires the end time data TS2 from the clock unit 46 at the timing when the end trigger signal TG2 is received. The time data TS1 and the end time data TS2 are recorded in the storage unit 47.

  At this time, the recording control unit 41 records the video data VD11 and the audio data AD11 as one video / audio file AV in the storage unit 47, and stores the still image data PD, the start time data TS1, and the end time data TS2 in the video / audio file. Associate with AV.

(1-4) Recording Processing Procedure Using Motion Detection Next, motion detection when recording video captured by the camera 5 and sound collected by the microphone 6 in the storage unit 47 using motion detection as a trigger is performed. The recording processing procedure used will be described in detail with reference to the sequence chart of FIG.

  In other words, when the frame image data V1 is acquired from the camera 5 in step SP1, the motion detection unit 42 proceeds to step SP2, obtains an inter-frame difference between the frame image data V1 acquired this time and the previous time, and proceeds to next step SP3.

  Incidentally, the motion detection unit 42 proceeds to step SP3 without obtaining the inter-frame difference when the frame image data V1 is acquired only after the recording process using motion detection is executed.

  In step SP3, the motion detection unit 42 determines whether or not motion between frames has been detected as a result of obtaining the interframe difference in step SP2. If a positive result is obtained, this detects motion between frames. It moves to the next step SP4.

  In step SP4, the motion detection unit 42 transmits the motion detection signal MS to the determination unit 43, and proceeds to the next step SP5.

  On the other hand, if a negative result is obtained in step SP3, this means that the motion between the frames is not detected as a result of obtaining the interframe difference. At this time, the motion detecting unit 42 performs step SP5. Move on.

  In step SP5, the motion detection unit 42 determines whether or not the next frame image data V1 is supplied from the camera 5. If a positive result is obtained, the process returns to step SP1, whereas if a negative result is obtained, The process proceeds to the next step SP6 to end the process.

  As described above, the motion detection unit 42 is configured to repeatedly perform steps SP1 to SP5 each time frame image data V1 is acquired from the camera 5.

  On the other hand, in step SP11, the determination unit 43 receives the motion detection signal MS from the motion detection unit 42, and proceeds to the next step SP12. Here, the determination unit 43 is configured to always receive the motion detection signal MS every time the motion detection signal MS is transmitted from the motion detection unit 42 while the recording process using motion detection is being performed. .

  In step SP12, the determination unit 43 determines whether or not the motion detection signal MS has been supplied from the motion detection unit 42 twice consecutively within a predetermined time. If a negative result is obtained, the determination unit 43 returns to step SP12 again to determine the predetermined value. It waits until the motion detection signal MS is received twice consecutively within the time.

  On the other hand, if an affirmative result is obtained in step SP12, this indicates that the motion detection signal MS has been supplied from the motion detection unit 42 twice consecutively within a predetermined time. At this time, the determination unit 43 moves to the next step SP13.

  In step SP13, the determination unit 43 transmits a start trigger signal TG1 to the recording control unit 41.

  When the recording control unit 41 receives the start trigger signal TG1 from the determination unit 43, the recording control unit 41 proceeds to step SP21 and acquires the frame image data V1 captured by the camera 5 as the video data VD11 and the still image data PD through the video encoding unit 44. Then, recording of the video data VD11 and the still image data PD is started in the storage unit 47.

  The recording control unit 41 acquires the audio signal A1 collected by the microphone 6 as the audio data AD11 via the audio encoding unit 45, and for example, the start trigger signal TG1 temporarily stored in its own buffer memory in advance. Starts to be recorded in the storage unit 47 from the audio data AD11 one second before the reception.

  Furthermore, the recording control unit 41 acquires the start time data TS1 from the clock unit 46 at the timing when the start trigger signal TG1 is received, and temporarily stores it in its own buffer memory.

  On the other hand, when the determination unit 43 transmits the start trigger signal TG1 to the recording control unit 41 in step SP13, the determination unit 43 proceeds from step SP13 to step SP14. In step SP14, the determination unit 43 determines whether or not the motion detection signal MS is not supplied from the motion detection unit 42, for example, for 3 seconds. If a negative result is obtained, this is still determined by the motion detection unit 42. This means that the movement between the two has been detected, and the process returns to step SP14 again.

  On the other hand, if an affirmative result is obtained in step SP14, this means that the motion between the frames is not detected by the motion detecting unit 42 for 3 seconds. At this time, the determining unit 43 performs the next step. Move to SP15.

  In step SP15, the determination unit 43 transmits an end trigger signal TG2 to the recording control unit 41, and proceeds to the next step SP16 to end the process.

  In step SP21, the recording control unit 41 starts to record the video data VD11, the still image data PD, and the audio data AD11 in the storage unit 47. When the recording control unit 41 obtains the end trigger signal TG2 from the determination unit 43, the recording control unit 41 proceeds to step SP22.

  In step SP22, the recording control unit 41 ends the recording of the video data VD11 and the still image data PD at the time when the end trigger signal TG2 is acquired, and the audio data AD11 until one second after the end trigger signal TG2 is acquired. Record.

  At this time, the recording control unit 41 records the video data VD11 and the audio data AD11 as one video / audio file AV in the storage unit 47, and records the still image data PD in association with the video / audio file AV in the storage unit 47. .

  In addition, when the recording control unit 41 acquires the end time data TS2 from the clock unit 46, the start time data TS1 temporarily stored in its buffer memory in step SP21 and the end time data TS2 are stored in the storage unit 47. Recording is performed in association with the file AV, and the process proceeds to the next step SP23 to end the process.

(1-5) Playback Processing Next, playback processing for playing back the video / audio file AV recorded in the storage unit 47 will be described in detail.

  When the television receiver 1 is in the standby state, the control unit 7 receives, via the remote control light receiving unit 4, a remote control signal supplied when, for example, the power button for turning on the remote control is pressed. Then, the reproduction process is executed.

  When the reproduction process is started, if there is a video / audio file AV newly recorded in the storage unit 47 in the standby state, the control unit 7 includes the still image data PD associated with the video / audio file AV. Is read from the storage unit 47.

  Then, as shown in FIG. 6, the control unit 7 displays a thumbnail image SG corresponding to the still image data PD read from the storage unit 47 and a display shaped so that the user can easily visually confirm the thumbnail image SG. The area KA is generated, and the thumbnail image SG and the display area KA are transmitted as display image data IM1 to the OSD display generation unit 13 together with the ratio information α.

  The OSD display generating unit 13 processes the display image data IM1 supplied from the control unit 7 according to the transmittance of the ratio information α, and sends the display image data IM2 having a predetermined transmittance to the video mixer 12.

  The video mixer 12 superimposes the display image data IM2 supplied from the OSD display generator 13 on the video signal VD2 supplied from the digital television broadcast receiver 30 via the video switch 11, and obtains the result. The TV image TVG1 (FIG. 6) to be displayed is displayed on the LCD2.

  When the TV image TVG1 is displayed on the LCD 2, the control unit 7 is supplied with a remote control signal indicating that a playback button (not shown) of the remote control is pressed through the remote control light receiving unit 4, for example. For example, the start time data TS1 and the end time data TS2 associated with a plurality of video / audio files AV are read from the storage unit 47, respectively.

  Then, the control unit 7 generates a list display screen LG1 as shown in FIG. 7 and displays it on the LCD 2 via the OSD display generation unit 13 and the video mixer 12.

  The list display screen LG1 displays, for example, reproduction items IC1 to IC5 including a start time and an end time as a list based on the plurality of start time data TS1 and end time data TS2 read from the storage unit 47. A cursor CS for selecting one of the reproduction items IC1 to IC5 is displayed.

  When the user selects, for example, the playback item IC1 among the playback items IC1 to IC5 displayed on the list display screen LG1 via the remote controller, the control unit 7 selects the video / audio file AV corresponding to the selected playback item IC1. Reproduction is performed by the reproduction control unit 51 of the reproduction unit 50.

  When the reproduction control unit 51 reads the video / audio file AV corresponding to the reproduction item IC1 selected by the user via the remote controller from the storage unit 47, the reproduction control unit 51 sends the video data VD11 of the video / audio file AV to the recording video decoding unit 52. At the same time, the audio data AD 11 of the video / audio file AV is sent to the recording audio decoding unit 53.

  The recorded video decoding unit 52 decodes the video data VD11 supplied from the reproduction control unit 51 and displays it on the LCD 2 as a recorded video via the video switch 11 and the video mixer 12.

  On the other hand, the recorded audio decoding unit 53 decodes the audio data AD11 supplied from the reproduction control unit 51, and outputs it from the speaker 3 as recorded audio via the audio switch 14.

(1-6) Reproduction Processing Procedure Next, a reproduction processing procedure for reproducing the video / audio file AV recorded in the storage unit 47 will be described in detail with reference to the flowchart of FIG.

  Actually, when the television receiver 1 is in a standby state and the control unit 7 receives a remote control signal supplied by pressing a power button for turning on the remote control, for example, the control unit 7 proceeds to step SP31. .

  In step SP31, the control unit 7 determines whether or not there is a video / audio file AV newly recorded in the storage unit 47 in the standby state, and if a negative result is obtained, This indicates that the video / audio file AV newly recorded in the storage unit 47 does not exist, and the process proceeds to step SP36 to end the process.

  On the other hand, if a positive result is obtained in step SP31, this indicates that the video / audio file AV newly recorded in the storage unit 47 exists in the standby state. At this time, the control unit 7 Moves to the next step SP32.

  In step SP32, the control unit 7 reads out any of the plurality of still image data PD respectively associated with the plurality of video / audio files AV recorded in the storage unit 47. Then, the control unit 7 generates a thumbnail image SG corresponding to the still image data PD, displays the TV image TVG1 (FIG. 6) on which the thumbnail image SG is superimposed on the display area KA on the LCD 2, and next step SP33. Move on.

  In step SP33, the control unit 7 determines whether or not a remote control signal indicating that the playback button has been pressed is supplied via the remote controller, for example, while the television image TVG1 is being displayed on the LCD 2. If a negative result is obtained here, this indicates that the user does not want to reproduce the video / audio file AV recorded in the storage unit 47, and the process proceeds to step SP36 and the process is terminated.

  On the other hand, if an affirmative result is obtained in step SP33, this indicates that the user desires to reproduce the video / audio file AV recorded in the storage unit 47. At this time, the control unit 7 Then, the process proceeds to the next step SP34.

  In step SP34, the control unit 7 displays a list display screen LG1 (FIG. 5) for displaying the reproduction items IC1 to IC5 having the start time and the end time based on the start time data TS1 and the end time data TS2 read from the storage unit 47. 7) is generated, the list display screen LG1 is displayed on the LCD 2, and the process proceeds to the next step SP35.

  In step SP35, when the user selects, for example, a playback item IC1 from the playback items IC1 to IC5 displayed on the list display screen LG1 via the remote controller, the control unit 7 displays a video corresponding to the selected playback item IC1. The audio file AV is reproduced by the reproduction control unit 51 of the reproduction unit 50, and the process proceeds to the next step SP36 to end the process.

  Specifically, when the reproduction control unit 51 reads the video / audio file AV corresponding to the reproduction item IC1 selected by the user via the remote controller from the storage unit 47, the reproduction control unit 51 records the video data VD11 of the video / audio file AV. 52, the recorded image is displayed on the LCD 2 through the image switch 11 and the image mixer 12.

  Further, the reproduction control unit 51 outputs the audio data AD11 of the video / audio file AV as recorded audio from the speaker 3 via the recording audio decoding unit 53 and the audio switch 14.

(1-7) Operation and effect in the first embodiment In the above configuration, the television receiver 1 in the first embodiment has the frame image captured by the camera 5 when the power is turned off. Data V1 is continuously acquired, and an inter-frame difference between the frame image data V1 acquired this time and the previous time is obtained.

  When the television receiver 1 detects a motion between frames based on a difference between frames, the frame image data V1 captured by the camera 5 and the audio signal A1 collected by the microphone 6 are respectively compressed and encoded. The obtained video data VD11 and audio data AD11 are recorded in the storage unit 47 as a video / audio file AV.

  Therefore, the television receiver 1 can automatically record the video data VD11 and the audio data AD11 in the storage unit 47 while detecting the motion between frames.

  Thus, if the television 5 is installed at a position where the camera 5 can capture the entire room, for example, when a suspicious person enters the room, the state of the room from the time when the suspicious person enters the room. Can be automatically recorded as video and audio.

  The television receiver 1 has a camera 5 and a microphone 6 provided therein, and does not need to be connected via a cable as in the conventional case. Therefore, the television receiver 1 has a simple configuration and imposes complicated work on the user. The video data VD11 and the audio data AD11 can be recorded by the camera 5 and the microphone 6 without any problem.

  Further, the television receiver 1 records the frame image data V1 captured by the camera 5 as video data VD11 obtained by compression encoding, and records the frame image data V1 at a predetermined frame interval as still image data PD. did.

  As a result, the television receiver 1 can reduce the data size by compressing and encoding the video data VD11, and can record the still image data PD with high definition without performing the compression encoding.

  Further, the television receiver 1 records the audio data AD11 from, for example, 1 second before detecting the motion between frames to 1 second after the motion is not detected in the storage unit 47, so that the motion between the frames is recorded. The user can confirm the state before and after the detection by voice.

  Further, since the television receiver 1 is provided with the charger 63 and the battery 64, the remote control light receiving unit 4, the control unit 7, and the recording unit 40 can be used even when a power failure occurs or the AC plug 61 is disconnected from the outlet. The recording process can be executed by operating with the power supply from the battery 64.

  Further, when the video / audio file AV is newly recorded in the storage unit 47 in the standby state, the television receiver 1 has a thumbnail image SG based on the still image data PD associated with the video / audio file AV superimposed. The TV image TVG1 is displayed on the LCD 2 when the power is turned on.

  Thereby, the television receiver 1 can notify the user that the video / audio file AV is newly recorded in the storage unit 47 in the standby state.

  According to the above configuration, the television receiver 1 is provided with the camera 5 and the microphone 6 therein, and when the movement is detected from the frame image data V1 captured by the camera, the image is captured by the camera 5. Video data VD11 based on the frame image data V1 and audio data AD11 based on the audio signal A1 collected by the microphone are recorded. Thus, the television receiver 1 can automatically record the video data VD11 and the audio data AD11 with a simple configuration and without forcing the user to perform complicated work.

(2) Second Embodiment (2-1) Overall Configuration of Television Receiver As shown in FIG. 1, the television receiver 100 according to the second embodiment of the present invention is the first embodiment. The configuration is basically the same as that of the television receiver 1 in this embodiment, and the description thereof is omitted for the sake of convenience.

(2-2) Circuit Configuration of Television Receiver As shown in FIG. 9 in which parts corresponding to those in FIG. 2 are assigned the same reference numerals, in the television receiver 100, the control unit 7 having a CPU configuration controls the whole. It is made to control.

  Also in the television receiver 100, the digital television broadcast unit 30 performs the same process for receiving and displaying normal television broadcasts and the process for receiving and displaying television broadcasts by the television receiver 1 in the first embodiment. Therefore, the description thereof is omitted for convenience.

  In the television receiver 100, a face detection unit 142 is provided in the recording unit 140 of the monitoring unit 120 instead of the motion detection unit 42 provided in the recording unit 40 of the monitoring unit 20 in the first embodiment. .

  The camera 5 of the recording unit 140 captures, for example, 30 frames per second with a resolution of a horizontal width of 1920 pixels and a vertical width of 1080 pixels. As a result, the frame image data V1 obtained continuously is detected by the face detection unit 142. And sent to the video encoding unit 44.

  The face detection unit 142 of the recording unit 140 performs a predetermined face detection process from the frame image data V1 supplied from the camera 5 to detect the face of the subject displayed in the frame image data V1. When the face detection unit 142 detects the face of the subject from the frame image data V <b> 1, the face detection signal 142 sends a face detection signal FS to the determination unit 143.

  The determination unit 143 sends the start trigger signal TG1 and the end trigger signal TG2 to the recording control unit 41 based on the face detection signal FS supplied from the face detection unit 142.

  Thereafter, as in the first embodiment, the video encoding unit 44 compresses and encodes the video signal V1 supplied from the camera 5 to a resolution of, for example, a width of 640 pixels and a height of 480 pixels using the MPEG2 method, and obtains the result. The video data VD11 to be transmitted is sent to the recording control unit 41.

  In addition, the microphone 6 sends out an audio signal A1 obtained by collecting ambient sounds to the audio encoding unit 45.

  The audio encoding unit 45 compresses and encodes the audio signal A1 supplied from the microphone 6 into an MP2 system having a sampling rate of 48 [kHz] and a bit rate of 128 [kbps], for example, and audio data AD11 obtained as a result is encoded. The data is sent to the recording control unit 41.

  The clock unit 46 counts time based on, for example, the time input via the remote controller at the time of initial setting by the user, and sends time data TS indicating the current time to the recording control unit 41.

  When the recording control unit 41 receives the start trigger signal TG1 from the determination unit 143, the video data VD11 supplied from the video encoding unit 44 and the audio data AD11 supplied from the audio encoding unit 45 are composed of, for example, a nonvolatile memory. Recording to the storage unit 47 starts.

  When the recording control unit 41 receives the end trigger signal TG2 from the determination unit 43, the recording control unit 41 ends the recording of the video data VD11 and the audio data AD11 in the storage unit 47 into the storage unit 47.

  At this time, the recording control unit 41 records the video data VD11 and the audio data AD11 in the storage unit 47 as the video / audio file AV.

  Further, the recording control unit 41 can acquire the frame image data V1 before compression encoding from the video encoding unit 44, and can record the frame image data V1 in the storage unit 47 in association with the video / audio file AV as still image data PD. It is made like that.

  Further, the recording control unit 41 receives start time data TS1 indicating the time when the start trigger signal TG1 is received and end time data TS2 indicating the time when the end trigger signal TG2 is received from the clock unit 46. Has been made to get.

  The recording control unit 41 records the start time data TS1 and the end time data TS2 acquired from the clock unit 46 in the storage unit 47 in association with the video / audio file AV.

  Here, the recording control unit 41 has a buffer memory for temporarily storing the audio data AD11, the time data TS, and the like. For this reason, for example, when the recording control unit 41 receives the start trigger signal TG1 from the determination unit 43, the recording control unit 41 records the recording data from the video data VD11 and the audio data AD11, for example, one second before receiving the start trigger signal TG1. It is made to be able to do.

  Also in the television receiver 100, the reproduction processing by the reproduction unit 50 and the reproduction processing by the television receiver 1 in the first embodiment are the same, and thus the description thereof is omitted for convenience.

  Furthermore, the television receiver 100 is provided with an AC plug 61, an AC-DC converter 62, a charger 63, a battery 64, and a power switch 65 in the same manner as the television receiver 1 in the first embodiment. .

  Therefore, the remote control light receiving unit 4, the control unit 7, and the recording unit 140 can operate by receiving power supply from the battery 64 even when a power failure or the AC plug 61 is disconnected from the outlet.

(2-3) Recording Process Using Face Detection Next, the recording process using face detection that is mainly executed by the recording unit 140 in accordance with control by the control unit 7 will be described in detail. When the control unit 7 receives, via the remote control light receiving unit 4, a remote control signal supplied by pressing a power button for setting the power supply in the remote control to a standby state, for example, the control unit 7 performs a recording process using face detection. Execute.

  The control unit 7 causes the camera 5 to acquire frame image data V1 obtained by imaging, and sequentially supplies the frame image data V1 to the face detection unit 142.

  Each time the face detection unit 142 acquires frame image data V1, the face detection unit 142 performs face detection processing on the frame image data V1.

Specifically, as shown in FIG. 10 (A), the face detection unit 142, when the camera 5 obtains the p-th frame image data V1 _p, to the frame image data V1 _p made by currently acquired image G11 Then, face detection processing is executed. At this time, the face detection unit 142 does not detect a face from the frame image data V1 _p .

Next, when the face detection unit 142 continuously acquires p + 1,..., Q−1th frame image data V1 _{p + 1} ,..., V1 _q−1 , the frame image data V1 _{p + 1} composed of the image G12, ... Face detection processing is sequentially performed on V1 _{q-1 formed} of the image G13. At this time, the face detection unit 142 does not detect a face from the frame image data V1 _{p + 1} ,..., V1 _q−1 .

Subsequently, when the face detection unit 142 acquires the _qth frame image data V1 _q , the face detection unit 142 performs face detection processing on the frame image data V1 _q including the image G14. At this time, the face detection unit 142 detects the face of the subject OB from the frame image data V1 _q, and sends a face detection signal FS to the determination unit 143.

Further, when the face detection unit 142 obtains q + 1,..., R−1 and r-th frame image data V1 _{q + 1} ,..., V1 _r−1 and V1 _r in order, the frame image data V1 _{q + 1} ,. The face detection process is sequentially executed on V1 _r-1 and V1 _r to detect the face of the subject OB, and the face detection signal FS is sent to the determination unit 43. Incidentally, it is assumed that the frame image data V1 _r is an image G15, and the frame image data V1 _q to the frame image data V1 _r continuously change from the image G14 to the image G15.

Similarly, when the face detection unit 142 obtains r + 1,..., S−1 and sth frame image data V1 _{r + 1} ,..., V1 _s−1 and V1 _s in order, the frame image data The face of the subject OB is detected by sequentially executing face detection processing on V1V1 _{r + 1} ,..., V1 _s−1 and V1 _s , and a face detection signal FS is sent to the determination unit 43.

The face detection unit 142, s + 1, ···, t -1 th frame image data _V1 s + 1, · · ·, acquires the _{V1 t-1} in this order, the frame image data _{V1 s + 1, ···, V1} t-1 Then, the face detection process is sequentially executed to detect the face of the subject OB, and the face detection signal FS is sent to the determination unit 143.

Subsequently, the face detection unit 42 obtains the _t- th frame image data V1 _t , V1 _{t + 1} ,..., V1 _{t + 89} ,. Face detection processing is sequentially executed on V1 _t , V1 _{t + 1} ,..., V1 _u . At this time, the face detection unit 142 does not detect the face of the subject OB from the frame image data V1 _t , V1 _{t + 1} ,..., V1 _{t + 89} , and so on, and accordingly outputs the face detection signal FS to the determination unit 143. Never do.

Incidentally, the frame image data V1 _s , V1 _t, and V1 _{t + 89} are images G16, G17, and G18, respectively. It is assumed that the frame image data V1 _p to the frame image data V1 _{t + 89} continuously change from the image G11 to the image G19.

  As shown in FIG. 10B, the determination unit 143 determines that the face of the subject OB is detected from the frame image data V1 acquired by the camera 5 when the face detection signal FS is acquired from the face detection unit 142. A start trigger signal TG1 is sent to the recording control unit 41.

  When the face detection signal FS is not supplied from the face detection unit 142 after sending the start trigger signal TG1 to the recording control unit 41, the determination unit 143 determines the face of the subject OB from the frame image data V1 acquired by the camera 5. Is determined not to have been detected.

  Thereafter, the determination unit 143 determines that the face of the subject OB is no longer detected from the frame image data V1 acquired by the camera 5 when the face detection signal FS is not supplied from the face detection unit 142 for 3 seconds, for example. An end trigger signal TG2 is sent to the recording control unit 41.

  As shown in FIG. 10C, the recording control unit 41 starts to record the video data VD11 supplied from the video encoding unit 44 in the storage unit 47 at the timing when the start trigger signal TG1 is received from the determination unit 143.

  Then, the recording control unit 41 ends the recording of the video data VD11 supplied from the video encoding unit 44 to the storage unit 47 at the timing when the end trigger signal TG2 is received from the determination unit 143.

Accordingly, the recording control unit 41 records in the storage unit 47 the video data VD11 obtained by compressing and encoding the frame image data V1 _q composed of the image G14 to the frame image data V1 _{t + 89} composed of the image G19 by the video encoding unit 44. Become.

Further, as shown in FIG. 10D, the recording control unit 41 acquires, for example, the frame image data V1 _q to the frame image data V1 _t−1 before compression encoding from the video encoding unit 44, and the frame image data From V1 _q to frame image data V1 _t−1 are recorded in the storage unit 47 as still image data PD _q ,..., PD _t−1 .

  Further, as shown in FIG. 10E, when the recording control unit 41 receives the start trigger signal TG1 from the determination unit 143, the recording control unit 41 receives the start trigger signal TG1 temporarily stored in the buffer memory one second before. Recording to the storage unit 47 from the voice data AD11.

  When the recording control unit 41 receives the end trigger signal TG2 from the determination unit 143, the recording control unit 41 records the audio data AD11 until one second after the start trigger signal TG2 is received in the storage unit 47, and the audio data End recording of AD11.

  Further, the recording control unit 41 acquires the start time data TS1 from the clock unit 46 at the timing when the start trigger signal TG1 is received, and acquires the end time data TS2 from the clock unit 46 at the timing when the end trigger signal TG2 is received. The time data TS1 and the end time data TS2 are recorded in the storage unit 47.

  At this time, the recording control unit 41 records the video data VD11 and the audio data AD11 as one video / audio file AV in the storage unit 47, and stores the still image data PD, the start time data TS1, and the end time data TS2 in the video / audio file. Associate with AV.

(2-4) Recording Processing Procedure Using Face Detection Next, face detection is performed when recording video captured by the camera 5 and sound collected by the microphone 6 in the storage unit 47 using face detection as a trigger. The recording processing procedure used will be described in detail with reference to the sequence chart of FIG.

  That is, in step SP41, the face detection unit 142 acquires frame image data V1 from the camera 5, moves to next step SP42, executes face detection processing on the frame image data V1, and moves to next step SP43. .

  In step SP43, the face detection unit 142 determines whether or not a face is detected from the frame image data V1 acquired in step SP42. If a positive result is obtained, this means that the face is detected from the frame image data V1. The process proceeds to the next step SP44.

  In step SP44, the face detection unit 142 transmits the face detection signal FS to the determination unit 143, and proceeds to the next step SP45.

  On the other hand, if a negative result is obtained in step SP43, this indicates that a face is not detected from the frame image data V1 as a result of performing the face detection process on the frame image data V1, and this The face detection unit 142 proceeds to step SP45.

  In step SP45, the face detection unit 142 determines whether or not the next frame image data V1 is supplied from the camera 5. If a positive result is obtained, the process returns to step SP41, whereas if a negative result is obtained, The process proceeds to the next step SP46 to end the process.

  As described above, the face detection unit 142 repeatedly performs steps SP41 to SP45 every time the frame image data V1 is supplied from the camera 5.

  On the other hand, the determination unit 143 receives the face detection signal FS from the face detection unit 142 in step SP51, and proceeds to the next step SP52. Here, the determination unit 143 always receives the face detection signal FS every time the face detection signal FS is transmitted from the face detection unit 142 while the recording process using the face detection is being performed. .

  In step SP52, the determination unit 143 transmits the start trigger signal TG1 to the recording control unit 41.

  When the start trigger signal TG1 is supplied from the determination unit 143, the recording control unit 41 proceeds to step SP61, and the frame image data V1 captured by the camera 5 is converted into the video data VD11 and the still image data PD via the video encoding unit 44. To start recording the video data VD11 and the still image data PD in the storage unit 47.

  The recording control unit 41 acquires the audio signal A1 collected by the microphone 6 as the audio data AD11 via the audio encoding unit 45, and receives, for example, the start trigger signal TG1 temporarily recorded in its own buffer memory in advance. Recording is started from the audio data AD11 one second before to the storage unit 47.

  Further, the recording control unit 41 acquires the start time data TS1 from the clock unit 46, and temporarily stores the start time data TS1 in its own buffer memory.

  On the other hand, when the determination unit 143 transmits the start trigger signal TG1 to the recording control unit 41 in step SP52, the determination unit 143 proceeds from step SP52 to step SP53. In step SP53, the determination unit 143 determines whether or not the face detection signal FS is not supplied from the face detection unit 142 for 3 seconds, for example. If a negative result is obtained, this is still determined by the face detection unit 142. This means that a face is detected from the image data V1, and the process returns to step SP53 again.

  On the other hand, if a positive result is obtained in step SP53, this indicates that no face is detected from the frame image data V1 by the face detection unit 142 for 3 seconds. At this time, the determination unit 143 Then, the process proceeds to the next step SP54.

  In step SP54, the determination unit 143 transmits an end trigger signal TG2 to the recording control unit 41, and proceeds to the next step SP55 to end the process.

  In step SP61, the recording control unit 41 starts recording the video data VD11, the still image data PD, and the audio data AD11 in the storage unit 47. When the recording control unit 41 obtains the end trigger signal TG2 from the determination unit 143, the recording control unit 41 proceeds to step SP62.

  In step SP62, the recording control unit 41 ends the recording of the video data VD11 and the still image data PD when the end trigger signal TG2 is acquired, and the audio data AD11 from the time when the end trigger signal TG2 is acquired until one second later. End recording.

  At this time, the recording control unit 41 records the video data VD11 and the audio data AD11 as one video / audio file AV in the storage unit 47, and records the still image data PD in association with the video / audio file AV in the storage unit 47. .

  Further, when the recording control unit 41 acquires the end time data TS2 from the clock unit 46, the start time data TS1 temporarily stored in the buffer memory in step SP61 and the end time data TS2 to the storage unit 47 are stored in the video / audio file AV. Is recorded, and the process proceeds to the next step SP63 to end the process.

(2-5) Operation and Effect in Second Embodiment In the above configuration, the television receiver 100 in the second embodiment has a frame image captured by the camera 5 when the power is turned off. Data V1 is continuously acquired, and face detection processing is executed on the acquired frame image data V1.

  When the television receiver 100 detects a face from the frame image data V1, the frame image data V1 picked up by the camera 5 and the audio signal A1 collected by the microphone 6 are respectively compression-coded and obtained as a result. The video data VD11 and audio data AD11 are recorded in the storage unit 47.

  Accordingly, the television receiver 100 can automatically record the video data VD11 and the audio data AD11 in the storage unit 47 while detecting a face from the frame image data V1.

  Thus, if the television 5 is installed at a position where the camera 5 can capture the entire room, for example, if a suspicious person has entered the room, the state of the room from the point of entry of the suspicious person. Can be automatically recorded as video and audio.

  Further, the television device 100 has the camera 5 and the microphone 6 provided therein, and does not need to be connected via a cable as in the conventional case. Therefore, the television apparatus 100 has a simple configuration and requires a complicated operation for the user. The video data VD11 and the audio data AD11 can be recorded by the camera 5 and the microphone 6.

  Further, the television receiver 100 records the frame image data V1 captured by the camera 5 in the storage unit 47 as video data VD11 obtained by compression encoding, and records the frame image data V1 as still image data PD. I made it.

  As a result, the television receiver 1 can reduce the data size by compressing and encoding the video data VD11, and can record the still image data PD with high definition without performing the compression encoding.

  In addition, the television receiver 100 records the audio data AD11 from, for example, 1 second before detecting a face from the frame image data V1 to 1 second after detecting no face, and before and after detecting motion. Can be confirmed by the user by voice.

  According to the above configuration, the television receiver 100 is provided with the camera 5 and the microphone 6 therein. When a face is detected from an image captured by the camera, the frame image data captured by the camera 5 is detected. The video data VD11 based on V1 and the audio data AD11 based on the audio signal A1 collected by the microphone are recorded. Thus, the television receiver 1 can automatically record the video data VD11 and the audio data AD11 with a simple configuration and without forcing the user to perform complicated work.

(3) Other Embodiments In the first embodiment and the second embodiment described above, the video / audio file AV is stored in the storage unit 47 provided in the television receivers 1 and 100. The case where it was made to record etc. was described.

  However, the present invention is not limited to this. For example, as shown in FIG. 12 in which parts corresponding to those in FIG. Is provided.

  In the television receiver 200, an external storage unit 201 such as an external nonvolatile memory or a hard disk drive is connected to the storage unit interface 247, and a video / audio file AV or the like is recorded in the external storage unit 201. You may do it.

  In the first embodiment and the second embodiment described above, the case has been described in which the television receivers 1 and 100 are provided with the motion detection unit 42 and the face detection unit 142, respectively.

  However, the present invention is not limited to this, and as shown in FIG. 13 in which the same reference numerals are assigned to the corresponding parts in FIG. 2 and FIG. In addition, a face detection unit 142 may be provided.

  In this case, the television receiver 300 allows the user to select in advance whether to execute the motion detection process or the face detection process, and execute the recording process used for the motion detection process or the face detection process selected by the user. That's fine.

  Furthermore, in the first embodiment and the second embodiment described above, the television receivers 1 and 100 are provided with a reproduction unit 50, and the reproduction unit 50 includes a recorded video decoding unit 52 and a recorded audio decoding unit 53. The case where each is provided is described.

  However, the present invention is not limited to this. For example, as shown in FIG. 14 in which parts corresponding to those in FIG. 2 are assigned the same reference numerals, a television receiver 400 includes a recording video decoding unit 52 and a recording audio decoding unit 53 that are connected to a monitoring unit. 420 may not be provided.

  In this case, the television receiver 400 includes a video switch 411 and an audio switch 414 between the demultiplexing unit 34 of the digital television broadcast receiving unit 430 and the TV video decoding unit 35 and the TV audio decoding unit 36 in the TV unit 410, respectively. Is provided.

  The television receiver 400 switches the video switch 411 to supply the video data VD11 of the video / audio file AV recorded in the storage unit 47 to the TV video decoding unit 35 via the video switch 411. The decoding unit 35 decodes the video data VD11 and displays it on the LCD 2 as a recorded video.

  Also, the television receiver 400 switches the audio switch 414 to supply the audio data AD11 of the video / audio file AV recorded in the storage unit 47 to the TV audio decoding unit 36 via the audio switch 414. The audio data AD11 is decoded by the decoding unit 36 and output from the speaker 3 as recorded audio.

  Furthermore, in the first embodiment and the second embodiment described above, when the video / audio file AV recorded in the storage unit 47 is selected, the start time is based on the start time data TS1 and the end time data TS2. And a list display screen LG1 in which the reproduction items IC1 to IC5 including the end time are displayed as a list and displayed on the LCD 2.

  However, the present invention is not limited to this. When the television receivers 1 and 100 select the video / audio file AV recorded in the storage unit 47, the still image data PD is added to the start time data TS1 and the end time data TS2. To get. Then, the television receivers 1 and 100, as shown in FIG. 15, list display in which playback items IC11 to IC13 including a start time and an end time and thumbnail images SG corresponding to the still image data PD are displayed as a list. The screen LG2 may be generated and displayed on the LCD 2.

  Furthermore, in the first embodiment and the second embodiment described above, a remote control signal supplied when the power button for setting the power supply in the remote control to the standby state is pressed is transmitted via the remote control light receiving unit 4. As described above, the recording process using the motion detection and the recording process using the face detection are executed.

  However, the present invention is not limited to this, and a remote controller is provided with a recording start button (not shown), and the control unit 7 receives a remote control signal supplied by pressing the recording start button. 4 may be used to execute a recording process using motion detection and a recording process using face detection.

  Further, in the first embodiment and the second embodiment described above, the case where the audio / video file AV, the still image data PD, the start time data TS1, and the end time data TS2 are recorded in the storage unit 47 is described. Stated.

  However, the present invention is not limited to this, and the control unit 7 connects to an external server or the like using a predetermined communication unit, and the video / audio file AV, still image data PD, start time data TS1, and end time data are connected to the server. You may make it record on a server by transmitting TS2.

  In this case, in the television receivers 1 and 100, the video / audio file AV, the still image data PD, the start time data TS1, and the end time data TS2 are reliably received even when the storage unit 47 is destroyed by an intruder, for example. Can be stored in

  Further, in the above-described embodiment, the control unit 7 uses the above-described motion detection by controlling the motion detection unit 42, the determination unit 43, and the recording control unit 41 in accordance with an application program stored in advance. The case where the recording processing procedure was performed was described. However, the present invention is not limited to this, and the recording processing procedure using motion detection described above is performed in accordance with an application program installed from a storage medium, an application program downloaded from the Internet, and other application programs installed by various routes. Also good.

  Furthermore, in the above-described embodiment, the control unit 7 uses the above-described face detection by controlling the face detection unit 142, the determination unit 143, and the recording control unit 41 according to an application program stored in advance. The case where the recording processing procedure was performed was described. However, the present invention is not limited to this, and the recording processing procedure using the face detection described above is performed in accordance with an application program installed from a storage medium, an application program downloaded from the Internet, and other application programs installed through various routes. Also good.

  Furthermore, in the above-described embodiment, the camera 5 as the camera, the microphone 6 as the microphone, the motion detection unit 42 or the face detection unit 142 as the detection unit, and the storage unit 47 as the recording unit, the television as the television receiver of the present invention. The case where the receivers 1 and 100 are configured has been described. However, the present invention is not limited to this, and a television receiver may be configured by a camera, a microphone, a detection unit, and a recording unit having various configurations.

  The television receiver of the present invention can be applied to other variously mounted television receivers such as a plasma display, an organic EL display, and a cathode ray tube display in addition to the LCD.

It is a basic diagram which shows the external appearance structure of the television receiver in 1st Embodiment and 2nd Embodiment. 1 is a schematic diagram illustrating a circuit configuration of a television receiver according to a first embodiment. It is a basic diagram which shows the power supply structure of the television receiver in 1st Embodiment. It is a basic diagram which shows the timing chart of the recording start and recording end by a motion detection. 10 is a flowchart for explaining a recording processing procedure using motion detection. It is a basic diagram which shows a notification display screen. It is a basic diagram which shows a list display screen. It is a flowchart with which explanation of a reproduction processing procedure is provided. It is a basic diagram which shows the circuit structure of the television receiver in 2nd Embodiment. It is a basic diagram which shows the timing chart of the recording start and recording end by face detection. 10 is a flowchart for explaining a recording processing procedure using face detection. It is an approximate line figure showing circuit composition (1) of a television receiver in other embodiments. It is a basic diagram which shows the circuit structure (2) of the television receiver in other embodiment. It is a basic diagram which shows the circuit structure (3) of the television receiver in other embodiment. It is a basic diagram which shows the list display screen in other embodiment.

Explanation of symbols

  1, 100, 200, 300, 400 ... Television receiver, 2 ... LCD, 3 ... Speaker, 4 ... Remote control light receiving unit, 5 ... Camera, 6 ... Microphone, 7 ... Control unit, 10 ...... TV unit, 11 ... Video switch, 12 ... Video mixer, 13 ... OSD display generator, 14 ... Audio switch, 20, 220, 320, 420 ... Monitoring unit, 30 ... Digital television Broadcast receiving unit, 40, 140, 240, 340 ... recording unit, 41 ... recording control unit, 42 ... motion detection unit, 43 ... judgment unit, 44 ... video encoding unit, 45 ... audio encoding unit, 46... Clock unit 47... Storage unit 50 .. Playback unit 51... Playback control unit 52 .. Recorded video decoding unit 53 .. Recording audio decoding unit 61. AC-DC modification Parts, 63 ...... charger, 64 ...... battery, 65 ...... power switch, 201 ...... external storage unit, 247 ...... storage unit interface.

Claims (12)

A television unit that displays video based on a television broadcast signal on a display unit, and that outputs sound based on the television broadcast signal from a speaker;
A camera provided inside itself to capture surrounding images,
A microphone installed inside itself to collect the surrounding sound,
A detection unit for detecting movement based on an image captured by the camera;
A television receiver comprising: a recording unit that records video captured by the camera and audio collected by the microphone when the motion is detected by the detection unit. The detection unit is
The television receiver according to claim 1, wherein when the television unit is in a standby state, motion is detected based on an image captured by the camera. The television receiver is
The television receiver according to claim 1, further comprising: a display control unit that displays an image based on the video recorded in the recording unit on the display unit when the television unit is turned on. The recording part
The television receiver according to claim 1, wherein the television receiver is detachable from the television receiver. The television receiver is
The television receiver according to claim 1, further comprising: a battery unit that supplies power to the camera, the microphone, the detection unit, and the recording unit. A detection step of detecting movement based on an image captured by a camera provided inside the camera so as to capture an image of surroundings;
When the motion is detected by the detection unit, a recording step of recording in the storage unit the video picked up by the camera and the sound collected by the microphone provided therein so as to collect the surrounding sound A recording method comprising: and. A television unit that displays video based on a television broadcast signal on a display unit, and that outputs sound based on the television broadcast signal from a speaker;
A camera provided inside itself to capture surrounding images,
A microphone installed inside itself to collect the surrounding sound,
A detection unit for detecting the face of the subject based on the video imaged by the camera;
A television receiver comprising: a recording unit that records video captured by the camera and sound collected by the microphone when the face of the subject is detected by the detection unit. The detection unit is
The television receiver according to claim 7, wherein when the television unit is in a standby state, motion is detected based on an image captured by the camera. The television receiver is
The television receiver according to claim 7, further comprising: a display control unit configured to display an image based on the video recorded in the recording unit on the display unit when the television unit is turned on. The recording part
The television receiver according to claim 7, wherein the television receiver is detachable from the television receiver. The television receiver is
The television receiver according to claim 7, further comprising: a battery unit that supplies power to the camera, the microphone, the detection unit, and the recording unit. A detection step of detecting the face of the subject based on an image captured by a camera provided inside the camera so as to capture an image of the surroundings;
When the face of the subject is detected by the detection unit, the image picked up by the camera and the sound collected by the microphone provided therein are recorded in the storage unit so as to collect the surrounding sound. A recording method comprising: a recording step.

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