JP2008085670A - Av apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an AV apparatus which enables a user to enjoy AV information recorded on a recording medium by reproducing it at every favorite place of home. <P>SOLUTION: The unused frequencies of FM radio waves, which are not used as broadcasting radio waves in an area where the AV apparatus 10 and a receiver are used, are extracted on the basis of information, which is inputted through the keystrokes of a remote control 6 etc., and concerned with an area where the AV apparatus 10 and a receiver capable of receiving FM radio waves are used, and the other information, which is stored in a storage 2 to indicate in units of areas the frequencies of FM radio waves that are transmitted from a broadcasting station and capable of being received by the receiver. AV information such as music etc., which is read in from a recording medium 20 through a read-in unit 7, is processed to form sound signals through a signal processor 8, and the sound signals are converted into FM radio waves of unused frequencies and transmitted through a transmitter 11, whereby the receiver is capable of receiving the FM radio waves. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an AV device for reproducing AV (Audio-Visual) information recorded on a recording medium.

For example, DVD (Digital
AV equipment such as a Versatile Disc player reads and reproduces AV (Audio-Visual) information such as video and audio recorded on a recording medium such as a DVD or CD (Compact Disc). Since the reproduced video and audio are output through a display device such as a television connected to the AV device with a cable or the like, usually in a place such as a living room where the AV device or display device is installed in the home. Although it can be viewed and enjoyed, it cannot be viewed and enjoyed in a place such as a kitchen or a bathtub away from the AV device or display.

  On the other hand, for example, there is an FM transmitter that converts sound such as music reproduced by a portable audio player, an in-vehicle audio player, etc. into FM (Frequency Modulation) radio waves and transmits them. According to this FM transmitter, sound reproduced by an audio player or the like is skipped by FM radio waves, received by an FM radio or FM tuner, etc. within the reach of the FM radio waves, played, and viewed and enjoyed. be able to. However, for this purpose, when the FM transmitter is an accessory such as an audio player and is separate from the audio player or the like, the FM transmitter is purchased separately from the audio player or the like, and the audio player or the FM transmitter is connected with a cable or the like. It is necessary to perform a complicated operation of connecting and setting the frequency of the FM radio wave transmitted by the FM transmitter, which places a burden on the user.

  In the following Patent Document 1, a CD playback device and an FM transmitter are built in an in-vehicle navigation system main body, audio recorded on a CD is played back by the CD playback device, and converted into FM radio waves by the FM transmitter. It is described that it is transmitted, received by an FM receiver, and played back. It also describes that when the frequency of the radio wave transmitted by the FM transmitter interferes with the frequency of the broadcast radio wave transmitted from the broadcasting station, the frequency of the transmitted radio wave can be manually changed by operating a remote controller or the like. However, Patent Document 1 does not describe how to set the frequency of the transmission radio wave before the manual change, and the frequency of the transmission radio wave overlaps or approximates the frequency of the broadcast radio wave. There is a risk of radio wave interference. In addition, when manually changing the frequency of the transmitted radio wave so as not to overlap or approximate the frequency of the broadcast radio wave, it is necessary to perform a complicated work of checking the frequency of the broadcast radio wave in the area where the navigation system is located with a newspaper or the like. , Burdens the user.

  Patent Document 2 below discloses an information storage device including a hard disk unit, a rechargeable battery, an electromagnetic induction charging unit, and a wireless communication unit, and a home appliance such as a personal computer, a mobile phone, a video recording / playback device, or a television set. Describes that wireless communication is performed in a predetermined data communication format. However, for this purpose, both the transmitting and receiving devices must be special devices that can perform wireless communication in a predetermined data communication format, and it is necessary to purchase both the special transmitter and the receiver. Therefore, an economic burden is placed on the user.

Japanese Patent Laid-Open No. 9-21649 JP 2003-196964 A

  The present invention solves the above-mentioned problems, and the problem is that the AV information recorded on the recording medium can be played back and enjoyed easily anywhere in the home at any place. It is to provide AV equipment.

  The present invention relates to an AV apparatus including a reading means for reading AV (Audio-Visual) information recorded on a recording medium and a signal processing means for processing the information read by the reading means to generate a reproduction signal. A transmitter that converts the playback signal generated by the processing means into a radio wave that can be received by a general receiver and transmits it, and the frequency of the broadcast radio wave that is transmitted from a broadcast station that can be received by the receiver A storage means for storing information, an input means for inputting information indicating an area where the AV device and the receiver are used, and a control means for controlling each means are incorporated. In this configuration, the control means is based on the information input by the input means and the information stored in the storage means, and is not used as a broadcast radio wave in an area where the AV device and the receiver are used. An unused frequency of a radio wave that can be received by a receiver is extracted, AV information is read from a recording medium by a reading unit, and a reproduction signal generated by a signal processing unit is converted into an unused frequency radio wave by a transmitter and transmitted.

  In this way, the transmitter is built in the AV device together with other means, and the user inputs the area where the AV device and the general receiver on hand are used with the input means, and is recorded on the recording medium. When the information is reproduced by the AV device, a reproduction signal based on the AV information is automatically converted by the transmitter into a radio wave of an unused frequency that does not overlap with the broadcast radio wave from the broadcast station. For this reason, the user receives a transmission radio wave from a transmitter with a general receiver on hand at any place in the home, reproduces and outputs AV information of the recording medium from the radio wave, and outputs the information. You can enjoy AV information easily. In addition, it is not necessary for the user to purchase a transmitter separately from the AV device, connect the AV device and the transmitter with a cable, etc., and set the frequency of the transmission radio wave of the transmitter, etc. The burden on the user can be greatly reduced.

  In one embodiment of the present invention, in the AV device, the control means extracts a non-interference frequency of a radio wave that does not interfere with a broadcast radio wave from unused frequencies, and uses the transmitter to convert the reproduction signal to the non-interference frequency. Convert to radio waves and send.

  In this way, the radio wave transmitted from the transmitter and the radio wave from the broadcasting station are reliably prevented from interfering with each other. AV information or AV information broadcast by a broadcasting station can be reproduced and output for easy enjoyment.

  In one embodiment of the present invention, in the AV apparatus, the control means displays the frequency of the radio wave transmitted by converting the reproduction signal by the transmitter on the display means.

  In this way, the user immediately adjusts the frequency of the radio wave received by the general receiver on hand to the frequency displayed on the display means, and the receiver easily receives the radio wave transmitted from the transmitter. The AV information of the recording medium reproduced and output from the radio wave can be enjoyed more easily.

  In one embodiment of the present invention, in the AV device, the control means displays an unused frequency on the display means, makes it selectable by the input means, and converts the frequency of the radio wave to be transmitted by converting the reproduction signal by the transmitter. The frequency is changed to an unused frequency selected by the input means.

  In this way, the user can freely change the frequency of the transmission radio wave from the transmitter to an unused frequency such as an easy-to-remember number or a favorite number. In addition, it is possible to reliably prevent the frequency of the transmission radio wave from the transmitter from overlapping with the frequency of the broadcast radio wave from the broadcasting station after the change.

  In one embodiment of the present invention, in the AV device, the control means displays, on the display means, non-interference frequencies of radio waves that do not interfere with broadcast radio waves among the unused frequencies.

  In this way, the user can easily change the frequency of the transmission radio wave from the transmitter to a non-interference frequency among the unused frequencies. This also makes it possible to prevent the transmission radio wave from the transmitter from interfering with the broadcast radio wave from the broadcasting station with high probability after the change.

  Further, in a typical embodiment of the present invention, a reading means for reading AV (Audio-Visual) information recorded on a recording medium, and a signal processing means for processing the information read by the reading means to generate a reproduction signal; In a stationary AV device with a built-in transmitter, a transmitter that converts an audio signal out of a reproduction signal generated by a signal processing means into an FM (Frequency Modulation) radio wave and transmits it within a range surrounding a general home, and a broadcasting station Storage means storing information indicating the frequency of the broadcast radio wave transmitted from each area, input means for inputting information indicating the area where the AV device and the receiver capable of receiving FM radio waves are used, and each means And control means for controlling. In this configuration, the control means is an FM that is not used as a broadcast radio wave in the area where the AV device and the receiver are used, based on the information input by the input means and the information stored in the storage means. Extract the unused frequency of the radio wave, extract the non-interference frequency of the FM radio wave that does not interfere with the broadcast radio wave from the unused frequency, read the AV information from the recording medium by the reading means, and use the signal processing means The generated voice signal is converted into an FM radio wave having a non-interference frequency by a transmitter and transmitted, and the non-interference frequency is displayed on the display means. In addition, the control means displays the unused frequency on the display means so that the non-interference frequency is emphasized from the others, makes it selectable by the input means, and inputs the frequency of the radio wave to be transmitted after converting the audio signal by the transmitter. Change to an unused frequency selected by means.

  In this way, the transmitter is built in the AV device together with other means, and the user inputs the area where the AV device and the receiver that can receive the FM radio wave are used by the input means, and records it on the recording medium. The reproduced AV information is reproduced on the AV device, and the audio signal based on the AV information is automatically converted by the transmitter into an FM radio wave having a non-interference frequency that does not overlap with the radio wave from the broadcast station and does not interfere with the broadcast. The frequency is displayed on the display means while being transmitted. For this reason, the user can easily receive the transmission radio wave from the transmitter by matching the frequency of the FM radio wave received by the receiver immediately with the frequency displayed on the display means at any place in the home. By reproducing the AV information of the recording medium from the radio wave and outputting the sound, it is possible to listen and enjoy the sound easily. In addition, it is not necessary for the user to purchase a transmitter separately from the AV device, connect the AV device and the transmitter with a cable, etc., and set the frequency of the transmission radio wave of the transmitter, etc. The burden on the user can be greatly reduced. In addition, a transmitter that converts an audio signal into FM radio waves and transmits it is technically established and easy to manufacture. Therefore, it is possible to provide a low-priced AV device to the user with low manufacturing cost. Furthermore, the user can freely change the frequency of the transmission radio wave from the transmitter to an unused frequency such as a number that is easy to remember or a favorite number, or can easily change it to another non-interference frequency.

  According to the present invention, by inputting an area where an AV device and a general receiver on hand are used in the AV device and reproducing the AV information recorded on the recording medium, the AV information is automatically broadcast. Because it is converted to an unused frequency radio wave that does not overlap with the broadcast radio wave from the station, it is transmitted by the transmitter, so you can receive the radio wave transmitted from the transmitter with a general receiver on hand anywhere in the home By reproducing and outputting the AV information on the recording medium, the AV information can be enjoyed easily.

  FIG. 1 is a diagram illustrating an example of a usage environment of an AV device 10 according to an embodiment of the present invention. The AV device 10 is composed of, for example, a stationary DVD (Digital Versatile Disc) player. The AV device 10 reads and reproduces AV (Audio-Visual) information such as video and audio recorded on a recording medium 20 such as an optical disk such as a DVD or CD (Compact Disc) or a memory card. The display device 30 is configured by a general stationary television or the like provided with a display 32 such as an LCD (Liquid Crystal Display) or a CRT (Cathode Ray Tube) and a speaker 31. The AV device 10 and the display device 30 are installed in a room such as a living room in the home, and are connected by a cable or the like. The video signal and audio signal reproduced by the AV device 10 are output to the display device 30. The display 30 displays video based on the video signal from the AV device 10 on the display 32 and outputs audio based on the audio signal from the AV device 10 from the speaker 31 so that each can be viewed.

  The receiver 40 includes, for example, a general portable radio having a speaker 41, an antenna 42, a tuner 43, and the like. The receiver 40 can be installed in a place away from the room where the AV device 10 and the display 30 are installed in the home. The audio signal reproduced by the AV device 10 is converted into FM (Frequency Modulation) radio waves and transmitted from the antenna 12 as will be described later. The receiver 40 receives the broadcast radio wave broadcast from the broadcast station and the FM radio wave transmitted from the AV device 10, respectively, converts the radio wave into an original audio signal, and transmits the audio based on the audio signal to the speaker. Output from 41 so that you can listen.

  FIG. 2 is an electrical block diagram of the AV device 10. The control unit 1 includes a CPU and a memory such as a ROM and a RAM. The control unit 1 controls each unit of the AV device 10 based on the program and control data stored in the memory. The storage unit 2 includes a ROM, a RAM, and a nonvolatile memory. Information of the broadcast radio wave table T is stored in the storage unit 2. As shown in FIG. 3, the broadcast radio wave table T indicates the frequency of FM broadcast radio waves transmitted from a radio or television broadcast station that can be received by the receiver 40, and the TV channel number corresponding to a part of the frequency. Shown for each. The region code is identification information assigned to each region.

  The display unit 3 in FIG. 2 includes a VFD (Vacuum Fluorescent Display) or the like. The display unit 3 displays the operating state and time of the AV device 10. The operation unit 4 includes various keys and LEDs (Light Emitting Diodes) provided on the front surface of the AV device 10. The remote control receiving unit 5 receives a signal from the remote control 6. The remote controller 6 is provided with various keys. By operating keys on the remote controller 6 or the operation unit 4, various information such as a region code indicating a region where the AV device 10 and the receiver 40 are used can be input to the AV device 10. Based on the input region code and information in the column corresponding to the region code of the broadcast radio wave table T stored in the storage unit 2, the control unit 1 uses the AV device 10 and the receiver 40 in the region where the AV device 10 and the receiver 40 are used. An unused frequency of the FM radio wave that is not used for transmitting the broadcast radio wave from the broadcast station is extracted. Further, the control unit 1 extracts the non-interference frequency of the FM radio wave that does not interfere with the broadcast radio wave from the unused frequencies.

  The reading unit 7 includes an optical disk drive and a card reader. The reading unit 7 reads AV information recorded on a recording medium 20 such as an optical disk or a memory card mounted on the AV device 10. AV information of the recording medium 20 is digital data compressed in MPEG (Moving Picture Experts Group) format. The signal processing unit 8 includes an MPEG circuit, a D / A circuit, an OSD (On Screen Display) circuit, and the like. The signal processing unit 8 processes the AV information read from the recording medium 20 by the reading unit 7 to generate a video or audio reproduction signal. Specifically, the signal processing unit 8 decodes the digital AV data compressed in the MPEG format read from the recording medium 20 by the reading unit 7 using the MPEG circuit, and then uses the D / A circuit to output an analog video signal or audio signal. And output from the output terminal 9 to the display device 30 via a cable or the like. The signal processing unit 8 processes the image data input from the control unit 1 so that the image data can be displayed on the display 32 of the display device 30 by the OSD circuit, and displays the data from the output terminal 9 via a cable or the like. Output to the machine 30. The display 30 displays a video based on the video signal input from the signal processing unit 8 on the display 32 and outputs a sound based on the audio signal from the speaker 31.

  The transmitter 11 is composed of a PLL (Phase Locked Loop) circuit or the like. The transmitter 11 converts an audio signal in the reproduction signal generated by the signal processing unit 8 into an FM radio wave and transmits it from the antenna 12. The frequency band of FM radio waves is 70 to 108 MHz, of which 70 to less than 90 MHz is allocated to audio radio waves broadcast from radio stations, and 1 to 3 channels of audio from 90 to 108 MHz broadcast from TV stations. Assigned to radio waves. The frequency of the FM radio wave transmitted by the transmitter 11 can be changed in units of 0.1 MHz between 70 and 108 MHz. The control unit 1 sets one of the non-interference frequencies of the FM radio wave extracted as described above as a default transmission radio frequency that the transmitter 11 converts and transmits an audio signal. The reach of FM radio waves transmitted by the transmitter 11 is about 100 m. For this reason, the transmitter 11 can transmit FM radio waves within a range surrounding a general home. The receiver 40 can receive the transmission radio wave from the transmitter 11 at any location in the home, convert the radio wave into the original audio signal, and output the audio based on the audio signal from the speaker 41. it can.

  4 to 6 are diagrams illustrating examples of screens that the AV device 10 causes OSD display on the display 32 of the display device 30. FIG. In the AV device 10, an operation in which an audio signal based on AV information of the recording medium 20 reproduced by the reading unit 7 and the signal processing unit 8 is converted into FM radio waves by the transmitter 11 and transmitted is referred to as a transmitter mode. By operating predetermined keys on the remote controller 6 or the like, the control unit 1 causes the OSD to display a menu screen (not shown) for performing various settings of the AV device 10 on the display 32 of the display device 30. Then, by selecting the transmitter mode in the menu screen by operating the keys on the remote controller 6 or the like, the control unit 1 displays the screen G1 shown in FIG. On the screen G1, the controller 1 activates or stops the transmitter mode by determining the cursor K to be “ON” or “OFF” by operating the keys of the remote controller 6 or the like. In the lower part of the screen G1, the frequency of the FM radio wave to be transmitted by converting the audio signal by the transmitter 11, the TV channel number (shaded part) corresponding to the frequency, and “change” for changing the transmission radio frequency Is displayed. By determining the cursor K according to “change” by operating the keys of the remote controller 6 or the like, the control unit 1 causes the display 32 to display the screen G2 shown in FIG. 5 on the OSD.

  In the screen G2, the unused frequency of the FM radio wave extracted based on the area code input by the control unit 1 and the broadcast radio wave table T of the storage unit 2, and the TV channel number corresponding to a part of the frequency are displayed. Is displayed. In addition, among the unused frequencies, the non-interference frequency is displayed so as to be emphasized from others by bold letters having a size different from the others. Further, the currently set default transmission radio frequency is shaded and displayed differently from the others. In the screen G2, the control unit 1 converts the audio signal by the transmitter 11 and transmits it by determining the cursor K according to any unused frequency by key operation of the remote controller 6 or the like and selecting the frequency. The transmitted radio frequency is changed to the selected frequency. At this time, the non-interference frequency is highlighted in a form different from the others, so that it is easy to select. Before the change of the transmission radio frequency, one of the non-interference frequencies set by the control unit 1 as the default transmission radio frequency is displayed on the shaded portions in the screens G1 and G2. After the transmission radio frequency is changed, the unused frequency set by the control unit 1 as the changed transmission radio frequency is displayed on the shaded portions in the screens G1 and G2.

  During the operation of the transmitter mode, the control unit 1 converts the audio signal based on the AV information of the reproduced recording medium 20 into FM radio waves by the transmitter 11 and transmits it, while the screen G3 shown in FIG. Display. In the screen G3, the fact that the transmitter mode is in operation (ON) and the frequency of the FM radio wave transmitted from the transmitter 11 and the TV channel number corresponding to the frequency are displayed. Before the change of the transmission radio frequency, the default non-interference frequency is displayed as the transmission radio frequency on the screen G3. After the change of the transmission radio frequency, the non-interference frequency changed as the transmission radio frequency on the screen G3 or other than this The unused frequency is displayed.

  FIG. 7 is a flowchart showing a procedure for extracting unused frequencies by the AV device 10. Each process is executed by the control unit 1. When the user inputs the region code of the region where the AV device 10 and the receiver 40 are used by operating the keys of the remote controller 6 or the like (step S1: YES), the control unit 1 displays the region of the broadcast radio wave table T in the storage unit 2 Referring to the column corresponding to the code (step S2), an unused frequency of the FM radio wave that is not used as a broadcast radio wave in the region is extracted, and the frequency and a TV channel number corresponding to a part of this frequency are extracted. It memorize | stores in the memory | storage part 2 (step S3). Next, the control unit 1 extracts the non-interference frequency of the FM radio wave that does not interfere with the broadcast radio wave when the difference from the frequency of the broadcast radio wave transmitted from the broadcasting station is greater than a predetermined hertz among the unused frequencies. Then, the frequency and the television channel number corresponding to a part of the frequency are stored in the storage unit 2 (step S4). Then, the control unit 1 sets any one of the non-interference frequencies as a default transmission radio frequency transmitted from the transmitter 11 and stores it in the storage unit 2 (step S5). At this time, for example, by setting a non-interference frequency associated with a television channel as a default transmission radio frequency, the user can impress and easily remember the frequency.

  FIG. 8 is a flowchart showing a procedure for changing the frequency of the FM radio wave transmitted from the transmitter 11 by the AV device 10. Each process is executed by the control unit 1. When the user determines the cursor K to “change” in the screen G1 of FIG. 4 by operating the keys on the remote controller 6 or the like and instructs to change the transmission radio frequency (step S11: YES), the control unit 1 The screen G2 of FIG. 5 showing the unused frequency stored in the storage unit 2 and highlighting the non-interference frequency is displayed on the display 32 of the display device 30 (step S12). When the user selects any unused frequency in the screen G2 by operating the keys of the remote controller 6 or the like (step S13: YES), the control unit 1 changes the transmission radio frequency to the selected unused frequency. And it memorize | stores in the memory | storage part 2 (step S14).

  FIG. 9 is a flowchart showing an operation procedure during the transmitter mode operation of the AV device 10. Each process is executed by the control unit 1. After the user operates the remote controller 6 or the like to set the cursor K to “ON” in the screen G1 of FIG. 4 and activates the transmitter mode (step S21: YES), the user selects, for example, music information. When the recorded recording medium 20 such as a self-made CD is attached to the AV device 10 and playback of the recording medium 20 is instructed by key operation of the remote controller 6 or the like (step S22: YES), the control unit 1 is recorded on the recording medium 20. The read AV information is read by the reading unit 7 and processed and reproduced by the signal processing unit 8 (step S23). Then, the control unit 1 converts the audio signal in the reproduction signal generated by the signal processing unit 8 into an FM radio wave having the frequency set in step S5 of FIG. 7 or step S14 of FIG. 6 is displayed on the display 32 of the display 30 (step S24). The screen G3 shown in FIG. 6 indicating that the transmitter mode is in operation and the frequency of the FM radio wave being transmitted from the transmitter 11 is displayed. Thereafter, when the reproduction of the recording medium 20 is stopped (step S25: YES), the control unit 1 stops driving the transmitter 11, stops the transmission of the FM radio wave, and erases the display of the screen G3 on the display 32. (Step S26).

  According to the above, the transmitter 11 is incorporated in the AV device 10 together with other components, and the user inputs the region code of the region where the AV device 10 and the general receiver 40 on hand are used with the remote control 6 or the like. By reproducing AV information such as music recorded on the recording medium 20 on the AV device 10, the reproduced audio signal automatically based on the AV information is not overlapped with the broadcast wave from the broadcasting station by the transmitter 11. It is converted into an FM radio wave of an unused frequency and transmitted. For this reason, the user receives a transmission radio wave from the transmitter 11 by the receiver 40 at any place in the home such as a kitchen or a bathtub away from the place where the AV device 10 and the receiver 40 are installed, and the radio wave By reproducing AV information such as music on the recording medium 20 and outputting it from the speaker 41, the AV information can be listened to and enjoyed easily.

  Further, it is necessary for the user to purchase a transmitter separately from the AV device 10 as in the past, connect the AV device 10 and the transmitter with a cable, etc., and set the frequency of the transmission radio wave of the transmitter, etc. Therefore, the burden on the user can be greatly reduced. In addition, the transmitter 11 that converts an audio signal into FM radio waves and transmits it is technically established and easy to manufacture. Therefore, it is possible to provide a low-priced AV device 10 to a user with a low manufacturing cost.

  In addition, the audio signal reproduced by the AV device 10 is converted to an FM radio wave having a non-interference frequency among the unused frequencies by the transmitter 11 and transmitted, so that the radio wave transmitted from the transmitter 11 and the radio wave from the broadcasting station can be transmitted. Can be reliably prevented, and both radio waves can be received by the receiver 40, and the AV information of the recording medium 20 or the AV information broadcast by the broadcasting station can be reproduced and output from the radio waves for easy enjoyment. Can do.

  Further, the receiver 40 receives the screen G <b> 1 and G <b> 3 indicating the frequency of the FM radio wave to be transmitted by converting the audio signal reproduced by the AV device 10 by the transmitter 11 on the display 32 of the display 30. The frequency of the FM radio wave to be immediately adjusted to the frequency shown in the screens G1 and G3, the transmission radio wave from the transmitter 11 is easily received by the receiver 40, reproduced from the radio wave, and output from the speaker 41 It is possible to listen and enjoy AV information such as music on the recording medium 20 more easily.

  Further, by displaying on the display 32 of the display 30 the screens G1 and G2 for changing the frequency of the FM radio wave to be transmitted by converting the audio signal reproduced by the AV device 10 by the transmitter 11, the user can Can be freely changed to unused frequencies such as easy-to-remember numbers and favorite numbers. In addition, it is possible to reliably prevent the frequency of the transmission radio wave from the transmitter 11 from overlapping with the broadcast radio frequency from the broadcasting station after the change.

  Further, by displaying the unused frequency in the screen G2 so that the non-interference frequency is emphasized in a different form from the others, the user can set the frequency of the transmission radio wave from the transmitter 11 to the non-used frequency. It can be easily changed to the interference frequency. This also makes it possible to prevent the transmission radio wave from the transmitter 11 from interfering with the broadcast radio wave from the broadcasting station with high probability.

  The present invention can adopt various forms other than the above embodiment. For example, in the above embodiment, an example is described in which the audio signal read from the recording medium 20 by the reading unit 7 and the audio signal generated by the signal processing unit 8 is converted into FM radio waves by the transmitter 11 and transmitted. The invention is not limited to this. In addition to this, for example, the audio signal may be converted into an AM (Amplitude Modulation) radio wave or the like other than the FM radio wave and transmitted by a transmitter. For example, as shown in FIG. 10, a video signal and an audio signal read from the recording medium 20 by the reading unit 7 and generated by the signal processing unit 8 are converted into a higher frequency VHF (Very High Frequency) by the transmitter 11a. ) Or UHF (Ultra High Frequency) radio waves may be converted and transmitted. In this case, if a television is used as the receiver 40, it is possible to receive transmission radio waves from the transmitter 11a at any place in the home, reproduce and output video and audio, and enjoy watching and enjoying.

  Further, in the above embodiment, an example in which the ON / OFF state of the transmitter mode, the frequency of the transmission radio wave from the transmitter 11, the unused frequency, and the like are displayed on the display 32 of the display device 30 connected to the AV device 10 is given. However, the present invention is not limited to this. In addition to this, for example, information related to the transmitter mode may be displayed on the display unit 3 included in the AV device 10. In this case, the unused frequencies can be displayed even if the display unit 3 is small by switching one by one each time a key of the remote controller 6 or the like is operated and sequentially displaying them.

  Furthermore, in the above embodiment, an example in which the present invention is applied to a stationary AV device 10 including a DVD player or the like that reproduces AV information recorded on a recording medium 20 such as a DVD, a CD, or a memory card is given. However, the present invention relates to a DVD recorder, a hard disk recorder, and a Blu-ray disc for reproducing AV information recorded on a recording medium such as a DVD, CD, Blu-ray Disc (registered trademark), hard disk, or memory card. The present invention can also be applied to stationary or portable AV devices such as a player, an integrated machine of these, or an integrated machine of these and a television. In the case of a portable AV device, music or the like reproduced by the AV device is converted into a radio wave, transmitted, received by the receiver, and reproduced by a higher quality speaker or the like connected to the receiver. Therefore, it is possible to listen and enjoy music with better sound quality. In the above embodiment, the receiver 40 that receives the transmission radio wave from the transmitter 11 is composed of a radio or the like. However, other than this, for example, a receiver composed of a television, a tuner, a stereo, an audio component, or the like. A machine may be used.

It is a figure which shows an example of the usage environment of AV apparatus which concerns on embodiment of this invention. It is an electric block diagram of the AV device. It is a figure which shows an example of the information memorize | stored in the memory | storage part of the AV apparatus. It is a figure which shows an example of the screen which the AV apparatus displays. It is a figure which shows an example of the screen which the AV apparatus displays. It is a figure which shows an example of the screen which the AV apparatus displays. It is a flowchart which shows the extraction procedure of the unused frequency of the AV apparatus. It is a flowchart which shows the change procedure of the transmission radio frequency of the AV apparatus. It is a flowchart which shows the operation | movement procedure in the transmitter mode operation | movement of the AV apparatus. It is a figure which shows other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control part 2 Memory | storage part 4 Operation part 6 Remote control 7 Reading part 8 Signal processing part 10 AV apparatus 11, 11a Transmitter 20 Recording medium 30 Display device 40 Receiver T Broadcasting radio wave table

Claims (6)

In a stationary AV apparatus having a built-in reading means for reading AV (Audio-Visual) information recorded on a recording medium, and a signal processing means for processing the information read by the reading means to generate a reproduction signal,
A transmitter that converts an audio signal out of the reproduced signal generated by the signal processing means into an FM (Frequency Modulation) radio wave and transmits it within a range surrounding a general home;
Storage means for storing information indicating the frequency of the broadcast radio wave transmitted from the broadcast station for each region;
Input means for inputting information indicating a region where the AV device and the receiver capable of receiving FM radio waves are used;
Control means for controlling each means, and
The control means includes
An unused frequency of the FM radio wave that is not used as the broadcast radio wave in the area where the AV device and the receiver are used based on the information input by the input unit and the information stored in the storage unit And further extract the non-interference frequency of the FM radio wave that does not interfere with the broadcast radio wave from the unused frequencies,
The audio signal generated by the signal processing unit after the AV information is read from the recording medium by the reading unit is converted into an FM radio wave having the non-interference frequency by the transmitter, and the non-interference frequency is displayed on the display unit. Display
The unused frequency is displayed on the display means so that the non-interference frequency is emphasized from the others, and can be selected by the input means, and the frequency of the radio wave to be transmitted by converting the audio signal by the transmitter is input. An AV apparatus characterized by changing to the unused frequency selected by the means. In an AV apparatus having a built-in reading means for reading AV (Audio-Visual) information recorded on a recording medium, and a signal processing means for processing the information read by the reading means to generate a reproduction signal,
A transmitter that converts the reproduced signal generated by the signal processing means into a radio wave that can be received by a general receiver, and transmits the radio wave;
Storage means for storing information indicating the frequency of a broadcast radio wave transmitted from a broadcast station receivable by the receiver for each region;
Input means for inputting information indicating a region where the AV device and the receiver are used;
Control means for controlling each means, and
The control means is based on the information input by the input means and the information stored in the storage means, and is not used as the broadcast radio wave in an area where the AV device and the receiver are used. An unused frequency of a radio wave that can be received by a receiver is extracted, the AV information is read from the recording medium by the reading unit, and the reproduction signal generated by the signal processing unit is converted into a radio wave of the unused frequency by the transmitter. An AV device characterized by being converted into a signal and transmitted. The AV device according to claim 2,
The control means extracts a non-interference frequency of a radio wave that does not interfere with the broadcast radio wave from the unused frequency, converts the reproduction signal into a radio wave of the non-interference frequency with the transmitter, and transmits the radio signal. AV equipment characterized by In the AV device according to claim 2 or claim 3,
The AV device characterized in that the control means displays on the display means the frequency of the radio wave transmitted by converting the reproduction signal by the transmitter. The AV device according to any one of claims 2 to 4,
The control means displays the unused frequency on the display means and makes it selectable by the input means. The frequency of the radio wave to be transmitted by converting the reproduction signal by the transmitter is selected by the input means. AV equipment characterized by changing to frequency. The AV device according to claim 5,
The control device displays the non-interference frequency of the radio wave that does not interfere with the broadcast radio wave among the unused frequencies on the display unit in a different form from the other.

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