JP2007068042A - Receiving device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiving device and method for controlling information to be output on the basis of information to be output by another receiving device by simple configurations. <P>SOLUTION: A receiving part 4 is controlled so that a reception signal to be received can be changed by a control part 2, and when the comparison result of the reception signal and an acquisition signal by a data comparing part 20, is almost the same a display part 8 and a voice reproducing part 9 are controlled so that a program based on almost the same reception signal can be automatically output. Thus, it is possible to acquire the acquisition signal based on the program output by another receiving device 3, and to make a receiving device 1 output a program which is almost the same as the program output by the other receiving device 3. Therefore, it is possible to achieve the effects of this invention only by changing software configurations without using any special communication means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a receiving apparatus and method for outputting broadcast information transmitted from a broadcasting station.
In the present invention, the term “substantially identical” includes the same.

  As a first conventional technique, a technique has been proposed in which a server identifies a program based on audio information based on audio information transmitted from a personal computer (abbreviated as Personal Computer: PC). The PC acquires sound output from the television, and transmits the sound acquired by the PC to the server. The server identifies a television program based on the audio information transmitted from the PC, and transmits information related to the identified program to the personal computer. As a result, the user can acquire information related to the program based on the information from the server (see, for example, Patent Document 1).

  As a second conventional technique, there has been proposed a receiving apparatus that simultaneously displays a program transmitted from a broadcast station when a plurality of programs are transmitted from the same broadcast station at the same time. Therefore, the user can simultaneously view programs transmitted from the same broadcasting station (see, for example, Patent Document 2).

  As a third conventional technique, a receiving system having a stationary television with a tuner and a portable television without a tuner has been proposed. A deferred TV with a tuner is configured to receive and display programs from broadcast stations and transmit the received programs to a portable TV. The portable TV can receive and display information from a deferred TV Configured. Therefore, the user can acquire information related to the program output from the stationary television using the portable television while viewing the stationary television (see, for example, Patent Literature 3 and Patent Literature 4).

JP 2004-213570 A JP 2000-115658 A Japanese Patent Laid-Open No. 11-243512 JP 2003-244570 A

  In the first conventional technique described above, a technique for acquiring a sound from a television and specifying a program based on the sound information has been proposed. In order to specify a program, the sound information is once transmitted to a server. There is a problem that it takes time to identify a program. In addition, there is a problem in that a device that can be connected to the Internet is required, and equipment costs are required to realize it.

  Since the second conventional technique is configured to output a plurality of programs using one receiving device, there is a problem that the more programs to be output, the more difficult it is to recognize the programs to be output.

  In the third conventional technique described above, a program can be transmitted from a stationary television to a portable television. However, the stationary television requires a means for transmitting information, and the portable television requires information from the stationary television. Is required, and the configuration is complicated.

  Accordingly, an object of the present invention is to provide a receiving apparatus and method capable of controlling information to be output based on information output from another receiving apparatus with a simple configuration.

The present invention comprises a receiving means for receiving a broadcast signal;
Program extraction means for switching channels and extracting program information corresponding to each channel from a broadcast signal;
Information acquisition means for acquiring external environmental information;
Comparing means for comparing the extracted program information with the acquired environment information to obtain channel identity,
A receiving apparatus comprising output means for outputting program information of a channel for which identity is obtained.

In the present invention, when the channels obtained by the comparing means are multi-organized,
The output means outputs another program information in the same channel.

Furthermore, the present invention further comprises recording means for recording program information,
The recording means records the program information of the channel whose identity is obtained by the comparison means.

  Furthermore, the present invention is characterized in that the comparison means compares the environmental information and the program information by shifting either one of the environmental information and the program information by a predetermined time.

Further, in the present invention, the output means is means for outputting sound,
The information acquisition means is means for acquiring sound,
The output means is characterized in that the output of the sound is stopped when the comparison is made by the comparison means.

  Furthermore, the present invention is further characterized by further comprising storage means for storing history information based on the comparison result by the comparison means.

  Furthermore, the present invention is characterized in that the comparison means determines the rank of program information to be compared based on history information.

  Furthermore, the present invention is characterized in that the comparison means compares either one of the environmental information and the program information while shifting the time based on the history information.

  Furthermore, the present invention is characterized in that the comparison means periodically compares the environmental information and the program information.

Furthermore, the present invention is characterized in that history information is stored in a removable storage medium.
Furthermore, the present invention is characterized in that the information acquisition means acquires sound of a specific sound frequency.

Furthermore, the present invention provides a receiving step for receiving a broadcast signal;
An extraction step of switching the channel and extracting program information corresponding to each channel from the broadcast signal;
An information acquisition process for acquiring external environmental information;
A comparison step of comparing the extracted program information with the acquired environment information to obtain channel identity;
And an output step of outputting program information of channels whose identity is obtained from the comparison result of the comparison step.

  According to the present invention, the channel is switched by the program extracting means, the program information corresponding to each channel is extracted from the broadcast signal, and the program information in which the identity of each program information and the environment information is obtained by the comparing means is output. Output by means. Therefore, if there is program information of a channel that can be the same as the environment information, the program information of that channel is automatically output by the output means. Thus, the operator can operate the program information output by the receiving device by adjusting the environmental information that can be acquired by the receiving device. In addition, the receiving apparatus of the present invention includes only information acquisition means, for example, acquires environmental information based on a program output by another receiving apparatus, and is identical to the program information output by the other receiving apparatus. Can be output to the receiving apparatus of the present invention. Therefore, in order to achieve the effect of the present invention, it can be realized only by changing the software configuration without using any special communication means. As a result, the present invention can be realized at low cost.

  Further, according to the present invention, when the channel obtained with the comparison means has a multi organization, another program information in the same channel is output by the output means. Therefore, the output means automatically outputs other program information in the same channel, so to speak, when the program information that can be the same as the environment information is multi-organized. Thus, even if the program information output from the receiving device is a multi-organized program, the operator can automatically change the program information output from the output means according to the environment information, and convenience is improved.

  Further, according to the present invention, the comparison means controls the recording means so as to record the program information of the channel where the identity is obtained. Therefore, the recording means is automatically controlled so as to record program information that is identical to the environment information. Accordingly, the operator can cause the receiving device to record program information that is identical to the environment information without any special operation, and convenience is improved.

  Further, according to the present invention, the comparing means compares the environmental information with the program information by shifting either one of the environmental information and the program information by a predetermined time. There may be a time lag between the environmental information and the program information, but whether the same information can be obtained even if the environmental information and the program information are out of time by comparing the time. Can be judged. Thereby, the comparison means can compare the environment information and the program information with higher accuracy.

  Further, according to the present invention, when the comparison is performed by the comparison unit, the output unit is controlled so as to stop the output of the voice, so that the voice output by the output unit becomes noise and is acquired by the information acquisition unit. Can be prevented. Therefore, the comparison means can compare in a state where the sound output from the output means is reliably stopped, and the comparison accuracy can be improved.

  Furthermore, according to the present invention, the storage means stores history information based on the comparison result by the comparison means. Therefore, the control means for controlling each part of the receiving apparatus can control each component based on the history information. Thereby, the control means can reproduce a suitable control state from the past control state based on the history information. Therefore, the control means can perform processing smoothly and quickly without wasteful processing, and the processing time can be shortened.

  Further, according to the present invention, the comparison means determines the rank of the program information to be compared based on the history information. By determining the order of comparison based on the past order of comparison stored in the history information, it is possible to search for program information of channels that can be obtained in a short time. This makes it possible to cause the output means to output program information that can be obtained in a shorter time.

  Further, according to the present invention, the comparison means determines a time for shifting either one of the environment information and the program information based on the history information. When the receiving device is arranged in an environment similar to the environment compared in the past, the time lag between the environment information and the program information is likely to be approximately equal to the case compared in the past, so based on the history information, By determining the shift time, it is possible to search for program information that can be obtained in a shorter time and to output the searched program information to the output means.

  Further, according to the present invention, the comparison means periodically compares the environmental information with the program information. The output means changes the extracted program information when the environmental information differs from the program information according to the periodic comparison result by the comparing means, and the identity is obtained when the program information and the environmental information are identical. The program information of the channel that can be obtained is output. Thus, the output means is controlled periodically so that the environment information and the program information are identical. Therefore, even when the environmental information changes, it is possible to cause the output means to output program information that can automatically obtain the same identity as the changed environmental information. Therefore, the operator can automatically output the program information that can obtain the identity by following the environmental information without any operation.

  Further, according to the present invention, since the history information is stored in a removable storage medium, the operator can use the history information of the receiving device of the present invention for other devices. Accordingly, other devices can be suitably operated based on the history information of the receiving device.

  Furthermore, according to the present invention, since the information acquisition means acquires sound of a specific sound frequency, it is possible to acquire sound information from which sound such as real voice that is not related to the environment information is removed. Therefore, since the information acquisition means can acquire only the environmental information as much as possible, the comparison accuracy of the comparison means can be improved.

  Further, according to the present invention, since the program information of the channel obtained with the same identity as the comparison result in the comparison process is output, the program information of the channel obtained with the same identity as the environmental information is automatically output. be able to. Thus, the operator can remotely operate the program information to be output by controlling the environment information.

  Hereinafter, a plurality of embodiments for carrying out the present invention will be described with reference to the drawings. Portions corresponding to the matters described in the preceding forms in each embodiment are denoted by the same reference numerals, and overlapping description may be omitted. When only a part of the configuration is described, the other parts of the configuration are the same as those described in the preceding section. Not only the combination of the parts specifically described in each embodiment, but also the embodiments can be partially combined as long as the combination does not hinder. The start condition of each flowchart is not necessarily limited to the described start condition. The following description also includes a description of the receiving method.

  FIG. 1 is a block diagram showing an electrical configuration of a receiving apparatus 1 according to an embodiment of the present invention. In FIG. 1, in order to facilitate understanding, the signal lines from the control unit 2 included in the receiving device 1 are indicated by broken lines, and the other signal lines are indicated by solid lines. The receiving device 1 can receive a broadcast signal transmitted from a broadcast station, extract program information for each channel (hereinafter sometimes referred to as “program”) from the broadcast signal, and output the extracted program information. Yes, program information to be output can be changed based on information output by another receiving device 3 (see FIG. 3). In this embodiment, the receiving device 1 is realized by a digital broadcast receiving device, and is configured to be able to receive a digital broadcast wave that is a broadcast signal transmitted from a broadcast station. The digital broadcast wave includes, for example, at least one of terrestrial digital broadcast and satellite digital broadcast wave. The receiving device 1 includes a receiving unit 4, a setting storage unit 5, a recorded data storage unit 6, an instruction input unit 7, a display unit 8, an audio reproduction unit 9, a received signal storage unit 10, an acquired signal storage unit 11, and program guide information storage. Unit 13, memory card connection unit 14, data comparison unit 20, and control unit 2.

In digital broadcasting, for example, broadcast signals such as video and audio of a plurality of televisions are combined into one signal and transmitted. When sending a signal, MPEG (Moving
Among the color moving image compression techniques internationally established by the Picture Experts Group, an image compression technique called MPEG2 is used. In MPEG2, encoded video and audio are packetized and transmitted as a single signal in the form of a fixed-length TS (Transport Stream) signal suitable for transmission. The TS signal includes table information indicating the relationship between program information including information on program contents such as service information and program specification information, and data constituting the program. The data constituting the program information includes television broadcast video, television broadcast audio, and data broadcast data.

  Digital TV broadcasting can broadcast up to three channels of standard television format programs for one HD channel. In other words, in digital broadcasting, it is possible to broadcast three channels for broadcasting on the maximum standard television per broadcasting station, which is called multi-broadcasting. In multi-broadcasting, a maximum of three channels can be broadcast, so that a maximum of three programs can be broadcast in parallel. Therefore, by receiving such digital broadcast waves based on multi-broadcasting, a single broadcast station can select and output a program from a plurality of channels. For example, a service that broadcasts two or three programs at the same time instead of a high-definition program can simultaneously broadcast, for example, program A, program B, and program C in a standard television format on one broadcast station. In the present embodiment, a case will be described in which one broadcast station has a channel number for each multi-broadcast program when a multi-broadcast program is received. Of course, the present invention is not limited to this, and a receiving apparatus for selecting a program to be multi-broadcasted by one broadcast station having one channel number and the viewer performing channel number designation and subchannel designation. The present invention can be similarly applied to.

  The receiving unit 4 is a receiving unit that receives a digital broadcast wave transmitted from a broadcasting station and gives the received information to each unit. The receiving unit 4 includes an antenna 15, a tuner 16, and a decoding processing unit 17. The antenna 15 captures a digital broadcast wave transmitted from at least one of a broadcast satellite, a communication satellite, and a ground antenna. The antenna 15 gives information based on the received digital broadcast wave to the tuner 16.

  The tuner 16 selects and receives a digital broadcast wave of one channel from a plurality of digital broadcast waves captured by the antenna 15, and gives the received digital broadcast wave to the decoding processing unit 17. The decoding processing unit 17 has a function as program extracting means, extracts video data and audio data of each program that is digitally broadcast, and synchronizes video and audio with the extracted video data and audio data.

  The decoding processing unit 17 demodulates the digital broadcast wave of the selected channel and extracts information such as video and audio multiplexed on the TS signal. Furthermore, the decoding processing unit 17 has a function as an audio decoding, generates an audio signal by combining a signal including audio data extracted from the TS signal, and gives the generated audio signal to the audio reproduction unit 9. The decoding processing unit 17 has a function as video decoding, generates a video signal by combining signals including video data extracted from the TS signal, and gives the generated video signal to the display unit 8.

  The audio reproduction unit 9 has a function as an output unit, has a function of converting the audio signal generated by the decoding processing unit 17 into audio, and outputs the converted audio, and is realized by, for example, a speaker. The display unit 8 has a function as an output unit, has a function of displaying a video based on a video signal generated by the decoding processing unit 17, and is realized by a panel display, for example.

  The reception signal storage unit 10 stores the audio signal and the video signal given from the decoding processing unit 17. The reception signal storage unit 10 includes an audio signal storage unit 18 that stores an audio signal and a video signal storage unit 19 that stores a video signal. The reception signal storage unit 10 is realized by, for example, a buffer and temporarily stores each signal. The reception signal storage unit 10 gives the stored information to the data comparison unit 20 based on the command given from the data comparison unit 20.

  The program guide information accumulating unit 13 is a storage unit and stores information related to digital broadcast programs. Digital broadcasting has an electronic program guide (abbreviated to EPG) function. This EPG is a service provided from a broadcasting station to assist the act of selecting a program. That is, the operator can select a program to be watched and recorded based on the service provided from the broadcast station, for example, while watching a television screen using a remote controller. The EPG function is realized based on text information transmitted by program arrangement information included in the TS signal, and the program guide information storage unit 13 stores the text information. This text information includes program guide information. The program guide information includes a channel, start time, duration, program name, genre information, performer, author, and the like.

The recorded data storage unit 6 is a recording means, for example, a hard disk drive (Hard
It is realized by means using a fixed magnetic storage medium such as a disk drive (abbreviation: HDD) and means using a removable optical storage medium such as a digital versatile disk (abbreviation: DVD). The recorded data storage unit 6 can record program information including an audio signal and a video signal supplied from the decoding processing unit 17. The recorded data storage unit 6 records designated program information based on a command given from the control unit 2. The program information recorded in the recorded data storage unit 6 can be reproduced and output from the audio reproduction unit 9 and the display unit 8 based on an instruction from the control unit 2.

  The acquisition signal storage unit 11 is an information acquisition unit that acquires external environment information, such as audio information and video information, and provides the acquired information to the data comparison unit 20. The acquisition signal storage unit 11 includes an audio signal acquisition unit 21 and a video signal acquisition unit 22. The audio signal acquisition unit 21 includes a microphone 23 that functions as a means for acquiring audio, and a microphone signal storage unit 24 that stores the audio acquired by the microphone 23 as a microphone signal. The video signal acquisition unit 22 includes a camera 25 that functions as a means for acquiring video, and a camera signal storage unit 26 that stores the video acquired by the camera 25 as a camera signal. The microphone signal storage unit 24 and the camera signal storage unit 26 are realized by, for example, a buffer and temporarily store each signal. The signal stored in the acquired signal storage unit 11 is stored after the storage format is converted so as to have the same storage format as the signal stored in the reception signal storage unit 10.

  The data comparison unit 20 has a function as comparison means, compares the signals given from the reception signal accumulation unit 10 and the acquisition signal accumulation unit 11, judges the identity, and sends the comparison result to the control unit 2. give. The data comparison unit 20 is controlled by the control unit 2 to control various setting conditions, for example, a determination criterion for identity. With identity, for example, it is determined that identity is obtained when 70% or more of the signals to be compared continue for a predetermined period, for example, 3 to 5 seconds. In addition, information obtained from identity may be referred to as substantially identical information.

  The setting storage unit 5 is a storage unit, and stores various setting information used when the control unit 2 performs various processes. The setting information is history information based on, for example, a determination criterion for identity of the data comparison unit 20 and a comparison result. The setting storage unit 5 stores genre information input by the operator, that is, information indicating the type of program such as news, sports, music, and drama.

  The instruction input unit 7 is configured to output a command signal corresponding to an operator's command when the operator inputs the command, and to supply the command signal to the control unit 2, and is realized by a remote controller, for example. In other words, when it is determined that the instruction input unit 7 has been operated, the control unit 2 executes a program related to the switch.

  The memory card connection unit 14 can be detachably connected to a recording medium, for example, a memory card including a rewritable nonvolatile memory such as a flash memory. The memory card is connected to the memory card connection unit 14 by mounting it, and information stored in the memory card is read out or information is stored in the memory card according to a command from the control unit 2. The memory card stores, for example, program information stored in the recorded data storage unit 6 and setting information stored in the setting storage unit 5 and history information of the setting information.

  The control unit 2 performs processing based on a command given from each component such as a command given from the instruction input unit 7 so that each component of the receiving device 1 realizes a predetermined function. Control is performed by giving a control command to the component, which is realized by, for example, a microcomputer. The main control performed by the control unit 2 is as follows.

  (A) When the receiving unit 4 is controlled to change the channel of the received digital broadcast wave, and the comparison result between the received signal and the acquired signal is compared by the data comparing unit 20, the same is obtained. The display unit 8 and the audio reproduction unit 9 are controlled so that the program information of the channel is output.

  (B) The data comparison unit 20 is controlled so that either one of the reception signal and the acquisition signal is shifted by a predetermined time and the reception signal and the acquisition signal are compared.

  (C) When the signals are compared by the data comparison unit 20, the audio reproduction unit 9 is controlled to stop outputting the audio.

  (D) The recording data storage unit 6 is controlled so as to record information related to the program information from which identity is obtained, for example, program information of a channel from which identity is obtained.

  (E) When the received signal and the acquired signal are identical, and the received signal is multi-organized, the display unit 8 and the audio playback unit 9 are controlled so as to output other program information in the same channel.

  Next, the operation of the receiving apparatus 1 will be described using a flowchart. The operation of each flowchart is performed by the control unit 2.

  FIG. 2 is a flowchart illustrating processing performed by the control unit 2 of the receiving device 1. FIG. 3 is a diagram for explaining the operation of the receiving apparatus 1. This process is performed, for example, in a state where another receiving device 3 is arranged in the vicinity of the receiving device 1 and the other receiving device 3 is outputting a program, and the operator is in a power-on state of the receiving device 1. This is executed when an operation for starting a channel recognition operation is performed.

  In step a1, after performing an information acquisition step of acquiring external sound by the microphone 23, channel recognition processing for searching for a channel having an audio signal similar to the microphone signal based on the microphone signal acquired by the microphone 23 is performed. Then, the process proceeds to step a2. In step a1, the sound of the program A output from the other receiving device 3 is mainly acquired by the microphone 23. In step a2, it is determined whether or not a channel having a similar audio signal is recognized. If it is recognized, the process proceeds to step a3. If not recognized, this flow is terminated. In step a3, an output process for controlling each unit so as to output or record the recognized channel is performed, and this flow is finished.

  In this way, the channel based on the program output by the other receiving device 3 is automatically recognized, so to speak, the program information of the same broadcasting station as the channel output by the other receiving device 3 is received by the receiving device 1. Each part is controlled so that is output. As shown in FIG. 3, for example, when the other receiving device 3 outputs the program A among the three programs A to C that are being multi-broadcasted, the receiving device 1 acquires the sound of the program A. Then, the channel of program A is recognized, and control is performed so that program B and program C, which are the same broadcast stations as program A, are output.

  FIG. 4 is a flowchart showing channel recognition processing by the control unit 2 of the receiving apparatus 1. This flow corresponds to step a1 in FIG. 2. When the flow moves to step a1 in FIG. 2, this flow is started.

  In step b1, the current volume V0 of the sound reproducing unit 9 is recorded, and the process proceeds to step b2. In step b2, the sound output of the sound reproducing unit 9 is stopped, that is, the volume is set to 0, and the process proceeds to step b3. In step b3, the total number L1 of channels that can be received by the receiving apparatus 1 is read from the setting storage unit 5, and the process proceeds to step b4.

  In step b4, the initial value 0 is substituted for the increment value i, the first channel number Cn is read from the setting storage unit 5, and the process proceeds to step b5. In step b5, it is determined whether or not the increment value i is smaller than the total number of channels L1, and if smaller, the process proceeds to step b6, and if not smaller, the process proceeds to step b7. In step b7, since all the channels have been compared, the volume of the audio playback unit 9 is set to the volume V0 stored in the setting storage unit 5, and this flow ends.

  In step b6, based on the channel number Cn, a reception process for controlling the tuner 16 to switch channels is performed, and the process proceeds to step b8. In step b8, the data comparison unit 20 reads out the audio signal Pa from the audio signal storage unit 18 and the microphone signal Pm from the microphone signal storage unit 24, and proceeds to step b9. In step b9, in consideration of the time difference between the audio signal and the microphone signal, a comparison step is performed in which the time of either one of the audio signal and the microphone signal is shifted in advance to compare the audio signal and the microphone signal. Move on to step b10.

  In step b10, if the comparison result between the audio signal and the microphone signal is substantially the same by the data comparison unit 20, the process proceeds to step b13, and if not, the process proceeds to step b11. In step b11, the amplification value i is increased by 1, and the process proceeds to step b12. In step b12, the channel number Cn is set to the next number, and the process proceeds to step b5.

  In step b13, the channel number Cn determined to be substantially the same is stored in the setting storage unit 5 as the confirmed channel number Scn, and the process proceeds to step b14. In step b14, the volume of the sound reproducing unit 9 is set to the volume V0 stored in the setting storage unit 5, and this flow is ended.

  As described above with reference to FIG. 4, the microphone signal based on the sound acquired by the microphone 23 and the sound signal based on the digital broadcast wave channel acquired by the antenna 15 are sequentially compared for each channel, By determining the identity, a channel including an audio signal substantially the same as the microphone signal can be specified as the confirmed channel number Scn.

  FIG. 5 is a flowchart illustrating the comparison process performed by the control unit 2 of the receiving device 1. This flow corresponds to step b9 in FIG. 4. When the flow moves to step b9 in FIG. 4, this flow is started.

  In step c1, the time difference data Ta stored in the setting storage unit 5 is read, and the process proceeds to step c2. In step c2, the loop count L0 stored in the setting storage unit 5 is read, and the process proceeds to step c3. In step c3, the initial value 0 is substituted for the amplified value i, the initial value 0 is substituted for the accumulated time data Tpa, and the process proceeds to step c4.

  In step c4, audio data Dpa is generated by delaying the reproduction time of the audio signal Pa from the acquisition time, and the process proceeds to step c5. In step c5, it is determined whether or not the audio data Dpa and the microphone signal Pm are identical. If there is identity, this flow is terminated. If they are not equal, the process proceeds to step c6.

  In step c6, the time difference data Ta is added to the accumulated time data Tpa to increase the accumulated time data Tpa, and the process proceeds to step c7. In step c7, the amplification value i is increased by 1, and the process proceeds to step c8. In step c8, it is determined whether or not the amplified value i is larger than the loop count L0. If not larger, the process proceeds to step c4, and if larger, the process proceeds to step c9.

  In step c9, the initial value 0 is substituted for the amplified value i, the initial value 0 is substituted for the accumulated time data Tpa, and the process proceeds to step c10. In step c10, the audio data Dpa is generated by advancing the reproduction time of the audio signal Pa by the time difference data Tpa from the acquisition time, and the process proceeds to step c11. In step c11, it is determined whether or not the audio data Dpa and the microphone signal Pm are identical. If there is identity, this flow is terminated. If they are not equal, the process proceeds to step c12.

  In step c12, the time difference data Ta is added to the accumulated time data Tpa to increase the accumulated time data Tpa, and the process proceeds to step c13. In step c13, the amplification value i is increased by 1, and the process proceeds to step c14. In step c14, it is determined whether or not the amplified value i is larger than the loop count L0. If not larger, the process proceeds to step c10, and if larger, this flow is terminated.

  As described above with reference to FIG. 5, the predetermined time Ta, the audio signal is shifted with respect to the microphone signal, the audio signal and the microphone signal are compared, and how many times the comparison is performed is determined by a predetermined loop. It is determined by the number of times L0. The microphone signal based on the sound acquired by the microphone 23 and the sound signal based on the channel of the digital broadcast wave acquired by the antenna 15 have different acquisition paths for each signal, so even if they are the same signal, a time difference (time lag) However, as described in this flow, the problem due to the time difference is solved by giving a time difference and shifting the playback time. It is possible to reliably determine whether or not they are the same audio signal.

  FIG. 6 is a flowchart showing comparison result processing by the control unit 2 of the receiving apparatus 1. This flow corresponds to step a3 in FIG. 2, and the flow starts when moving to step a3 in FIG.

  In step d1, the first setting value Smode0 and the second setting value Smode1 are read from the setting storage unit 5, and the process proceeds to step d2. The first setting value Smode0 is a setting value that determines whether to select channel synchronization or selection of another channel of the same broadcasting station as the synchronized channel. The second setting value Smode1 is a setting value that determines whether to display or record the determined program. These set values are set by the operator.

  In step d2, it is determined whether or not the first setting value Smode0 is a setting for channel synchronization only. If it is a setting for only channel synchronization, the process proceeds to step d3. If it is not a setting for only channel synchronization, the process proceeds to step d7. Move. In step d3, the receiving unit 4 is controlled to receive the confirmed channel number Scn stored in the setting storage unit 5, and the process proceeds to step d5.

  In step d5, it is determined whether or not the second setting value Smode1 is a setting for displaying a program based on a channel. If it is a setting for displaying, the process proceeds to step d5. If not, the process proceeds to step d6. . In step d5, the display unit 8 and the audio reproduction unit 9 output the program, and this flow is finished. In step d6, the program is displayed on the display unit 8 and the recording data storage unit 6 is controlled to record the program, and this flow is finished.

  In step d7, since the first setting value Smode0 is not a setting for channel synchronization only, the program guide information Dch including the confirmed channel number Scn is read from the program guide information storage unit 13, and the process proceeds to step d8. In step d8, based on the program guide information Dch, it is determined whether or not it is multi-broadcast. If it is multi-broadcast, the process proceeds to step d9. If it is not multi-broadcast, the process proceeds to step d3.

  In step d9, since it is multi-broadcasting, the multi-broadcast channel Smch of the confirmed channel number Scn is read from the program guide information Dch, and the process proceeds to step d10. In step d10, the receiving unit 4 is controlled to receive the multi-broadcast channel number Smch stored in the setting storage unit 5, and the process proceeds to step d11.

  In step d11, it is determined whether or not the second setting value Smode1 is a setting for displaying a program based on a channel. If it is a setting for displaying, the process proceeds to step d12. If not, the process proceeds to step d13. . In step d12, the display unit 8 and the audio reproduction unit 9 output the program, and this flow ends. In step d13, control is performed so that the program is displayed on the display unit 8 and the recording data storage unit 6 records the program, and this flow ends.

  As described above with reference to FIG. 6, it is determined to select the same channel as the recognized channel or to select another channel of the same broadcasting station as the recognized channel based on a predetermined setting value. Is done. Whether to display a program or record a program after channel selection is determined based on a predetermined set value.

  As described above, according to the receiving device 1 of the present embodiment, the receiving unit 4 is controlled by the control unit 2 so as to change the received signal received, and the received signal and the acquisition signal are controlled by the data comparison unit 20. When the comparison result is substantially the same, the display unit 8 and the audio reproduction unit 9 are controlled to output a program based on substantially the same received signal. Therefore, if there is a reception signal that is substantially the same as the acquired signal, the display unit 8 and the audio reproduction unit 9 can automatically output a program related to the reception signal. Thus, the operator can operate the program output by the receiving device 1 by adjusting the acquisition signal that can be acquired by the receiving device 1. In addition, the receiving device 1 of the present invention only includes the acquisition signal storage unit 11, for example, acquires an acquisition signal based on a program output by another receiving device 3 or the like, and the other receiving device 3 outputs the acquired signal. A program substantially identical to the program can be output to the receiving apparatus 1 of the present invention. Therefore, in order to achieve the effect of the present invention, it can be realized only by changing the software configuration without using any special communication means. As a result, the present invention can be realized at low cost. Further, when the other receiving device 3 is, for example, a stationary type and the receiving device 1 of the present invention is, for example, a portable type, a special operation is performed on the same program as the program output by the stationary type receiving device 1. Therefore, convenience can be improved because the portable receiver 1 can automatically output the signal.

  In the present embodiment, as described with reference to FIG. 6, when the received signal and the acquired signal are substantially the same and the received signal is information based on multi-broadcast, the control unit 2 The display unit 8 and the audio reproduction unit 9 are controlled so as to output a program based on another received signal in a multi-organization of the same received signal. Therefore, the display unit 8 and the audio reproduction unit 9 automatically output a program that is the same broadcast station as the acquired signal and is multi-organized. Thus, the operator can automatically change the program output from the receiving device 1 to the same broadcast station as the broadcast station of the acquired signal, which improves convenience.

  Further, in the present embodiment, the control unit 2 controls the recorded data storage unit 6 so as to store information related to substantially the same received signal, for example, program information. Therefore, the recorded data storage unit 6 is automatically controlled so as to store program information related to the reception signal substantially the same as the acquired signal. Thus, the operator can store program information substantially the same as the acquired signal in the receiving device 1 without performing any special operation, and convenience is improved.

  Further, in the present embodiment, as described with reference to FIG. 5, the control unit 2 compares the acquired signal and the received signal by shifting one time of the acquired signal and the received signal by a predetermined time. Thus, the data comparison unit 20 is controlled. Although there may be a time lag between the acquired signal and the received signal, even if the acquired signal and the received signal are shifted in time and compared, the identity is compared and It can be determined whether or not they are the same. Thereby, the data comparison unit 20 can compare the acquired signal and the received signal with higher accuracy.

  Further, in the present embodiment, as described with reference to FIG. 4, when the comparison is performed by the data comparison unit 20, the audio output unit is controlled to stop outputting the audio, and thus is output by the speaker. Can be prevented from being acquired by the microphone 23 as noise. Therefore, the data comparison unit 20 can compare in a state where the sound output from the speaker is reliably stopped, and can improve the comparison accuracy.

  Furthermore, in the present embodiment, since the history information is stored in a storage medium such as a removable memory card, the operator can use the history information of the receiving device 1 of the present invention for other devices. As a result, other devices can be suitably operated based on the history information of the receiving device 1.

  In the above-described embodiment, the reception apparatus 1 that compares audio signals has been described. However, the environment information is not limited to the audio signal, and the camera signal acquired by the camera 25 may be compared with the video signal. .

  In the above-described embodiment, the information acquisition unit is realized by the camera 25 and the microphone 23. However, the information acquisition unit is not limited to this. For example, the information acquisition unit is configured to be communicable with another receiving device 3 using wired or wireless. The audio and video output by the other receiving device 3 may be acquired.

  In the above-described embodiment, the program based on the channel recognized by the channel recognition process is controlled to be displayed or recorded. However, the present invention is not limited to this. For example, based on the recognized channel, You may comprise so that a program may be output. For example, when the recognized program is a baseball program, it may be controlled to output another baseball program or another sports program. By controlling in this way, the operator, when using a plurality of receiving devices, automatically selects the channel of one receiving device among the plurality of receiving devices, so to speak, the remaining receiving devices automatically. The channel output by 1 can be controlled by the operator's setting. Thus, the operator can view a desired program without bothering adjusting the programs output from the plurality of receiving apparatuses 1, and convenience is improved.

  For example, the program guide information of the program based on the recognized channel may be used to search for other programs in which the performer appears using the performer included in the program guide information as a keyword. Good. This improves convenience.

  Further, in the above-described embodiment, when each signal is compared by the data comparison unit 20, the process for correcting the time lag described with reference to FIG. 5 is performed each time. However, the same process needs to be performed each time. Instead, the configuration may be such that each component is controlled based on the history information based on the comparison result by the data comparison unit 20 stored in the storage unit 5. Thereby, the control unit 2 can reproduce a suitable control state from the past control state based on the history information. Therefore, the control part 2 can process smoothly, without performing a useless process.

  Specifically, the control unit 2 may be configured to control the data comparison unit 20 so as to determine the rank of channels to be compared based on, for example, history information stored in the setting storage unit 5. By determining the order of comparison based on the past compared ranks stored in the history information, substantially the same channel can be searched in a short time. As a result, it is possible to output substantially the same broadcast information to the display unit 8 and the audio reproduction unit 9 in a shorter time.

  Further, for example, the control unit 2 controls the data comparison unit 20 so as to determine a time to shift the time of one of the acquisition signal and the reception signal based on the history information stored in the setting storage unit 5. It may be configured. When the receiving device 1 is arranged in an environment similar to the environment compared in the past, the time lag between the acquired signal and the received signal is likely to be approximately equal to that in the past, so based on the history information By determining the time for shifting, it is possible to search for substantially the same broadcast information in a shorter time. As a result, it is possible to output substantially the same broadcast information to the display unit 8 and the audio reproduction unit 9 in a shorter time.

  In the above-described embodiment, the data comparison unit 20 starts data comparison based on the operator's command, but the present invention is not limited to this, and periodically compares the acquired signal and the received signal. You may comprise as follows. For example, the control unit 2 changes the received broadcast information when the acquired signal and the received signal are different depending on the periodic comparison result by the data comparing unit 20, and the acquired signal and the received signal are substantially the same. The display unit 8 and the audio reproduction unit 9 are controlled so as to output a program based on substantially the same received signal. Accordingly, the display unit 8 and the audio reproduction unit 9 are controlled periodically so that the acquired signal and the received signal are substantially the same. Therefore, when the acquired signal changes, for example, even when a program output by another receiving device 3 is changed, the display unit 8 displays the received signal that is automatically the same as the acquired signal after the change automatically. And can be output to the audio reproduction unit 9. Therefore, the operator can automatically output substantially the same received signal to the display unit 8 and the audio reproduction unit 9 so as to automatically follow the acquired signal without performing any operation.

  In the above-described embodiment, the microphone signal acquisition unit is a configuration that gives the data comparison unit 20 the audio signal acquired by the microphone 23 without any processing, but is not limited to such a configuration. The audio signal acquisition unit 21 may be configured to include a filter function so as to acquire audio of a specific audio frequency. As a result, it is possible to obtain an audio signal from which an audio signal such as a real voice that is not related to the audio output by the other receiving device 3 is removed. Therefore, since the voice acquisition unit can acquire only the voice signal output from the other receiving device 3 as much as possible, the comparison accuracy of the data comparison unit 20 can be improved.

It is a block diagram which shows the electric constitution of the receiver 1 of one Embodiment of this invention. 4 is a flowchart showing processing by a control unit 2 of the receiving device 1. 6 is a diagram for explaining the operation of the receiving device 1. FIG. 4 is a flowchart showing channel recognition processing by the control unit 2 of the receiving device 1. 6 is a flowchart illustrating a comparison process performed by a control unit 2 of the receiving device 1. 7 is a flowchart showing comparison result processing by the control unit 2 of the receiving device 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reception apparatus 2 Control part 4 Reception part 5 Setting memory | storage part 6 Recording data storage part 8 Display part 9 Audio | voice reproduction | regeneration part 10 Reception signal storage part 11 Acquisition signal storage part 13 Program guide information storage part 18 Audio | voice signal storage part 20 Data comparison part

Claims (12)

Receiving means for receiving a broadcast signal;
Program extraction means for switching channels and extracting program information corresponding to each channel from a broadcast signal;
Information acquisition means for acquiring external environmental information;
Comparing means for comparing the extracted program information with the acquired environment information to obtain channel identity,
A receiving apparatus comprising output means for outputting program information of a channel for which identity is obtained. If the channels that have been identified by the comparison means are multi-organized,
2. The receiving apparatus according to claim 1, wherein the output means outputs other program information in the same channel. It further comprises a recording means for recording program information,
3. The receiving apparatus according to claim 1, wherein the recording unit records the program information of the channel whose identity is obtained by the comparison unit.   The comparing means compares the environmental information and the program information by shifting either one of the environmental information and the program information by a predetermined time, and compares the environmental information and the program information. Receiver device. The output means is means for outputting sound,
The information acquisition means is means for acquiring sound,
The receiving device according to claim 1, wherein the output unit stops outputting the voice when the comparison unit performs comparison.   The receiving apparatus according to claim 1, further comprising a storage unit that stores history information based on a comparison result by the comparison unit.   7. The receiving apparatus according to claim 6, wherein the comparing means determines the rank of the program information to be compared based on the history information.   The receiving device according to claim 6, wherein the comparison unit compares the time information of either one of the environment information and the program information while shifting based on the history information.   The receiving device according to claim 1, wherein the comparison unit periodically compares the environment information with the program information.   The receiving apparatus according to claim 6, wherein the history information is stored in a removable storage medium.   The receiving apparatus according to claim 5, wherein the information acquisition unit acquires a sound having a specific sound frequency. A receiving process for receiving a broadcast signal;
An extraction step of switching the channel and extracting program information corresponding to each channel from the broadcast signal;
An information acquisition process for acquiring external environmental information;
A comparison step of comparing the extracted program information with the acquired environment information to obtain channel identity;
A receiving method comprising: an output step of outputting program information of a channel whose identity is obtained from the comparison result of the comparison step.

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