JP2002344841A - Audio visual device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an audio visual device that effectively utilize its hardware. SOLUTION: The AV device 40 has a TV tuner 58 and an FM tuner 60 and also a memory card I/F 76 to which a memory card for recording music or the like is loaded. When a television reception function is selected, a display changeover section 64 superimposes an OSD signal such as channel information outputted from a display control section 82 on a TB video signal outputted from an IF/chroma processing section 62 and displays the superimposed signal on a display section 44 according to a switching signal from a device control section 74. When a function other than the television reception function is selected, the display changeover section 64 displays image information comprising an image signal outputted from the display control section 82 on the display section 44 according to the switching signal from the device control section 74.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio-visual device having a television receiving function, a radio receiving function, and a function of reproducing stored music data, and more particularly to a television (television) video with channel information. The present invention relates to an audio-visual device capable of superimposing and displaying visual information such as the above.

[0002]

2. Description of the Related Art FIG. 7 is a schematic block diagram of a conventional liquid crystal color television. In FIG. 7, the color television 1
Numeral 0 indicates that a tuner 14 as a video receiving circuit is connected to a receiving antenna 12 for receiving broadcast radio waves. The tuner 14 is configured such that a reception frequency (channel) can be switched by a channel selection microcomputer 16 having a CPU. An output side of the tuner 14 is provided with an intermediate frequency processing circuit (IF circuit) 18 for amplifying the video signal.
The intermediate frequency processing circuit 18 is connected to an audio circuit 20 for extracting and amplifying an audio signal.
Is output to the speaker 22 which is a sound generator.

On the other hand, a chroma circuit 24 is connected to the output side of the intermediate frequency processing circuit 18. Chroma circuit 24
Performs color demodulation from the video signal output from the intermediate frequency processing circuit 18 and inputs a signal corresponding to RGB to the liquid crystal controller 26. Then, the liquid crystal controller 26
The liquid crystal display unit 28 is driven to display television images. In addition, the liquid crystal controller 26 is provided with an OSD signal generation section 30 dedicated to on-screen display (OSD) provided in the channel selection microcomputer 16. The OSD signal generation unit 30 is controlled by a CPU included in the channel selection microcomputer 16 and displays visual information such as a channel number on a television image displayed on the liquid crystal display unit 28.

In recent years, with the development of electronic technology, electronic devices have been significantly advanced and diversified. In the field of electronic devices, composite devices having a plurality of functions have been developed. A portable audio-visual device (AV device) having a television receiving function and a sound reproducing function of reproducing stored music information and the like has been considered. In addition, semiconductor audio in which digital music is stored (recorded) in a semiconductor memory called a memory card has been widely used. When this semiconductor audio reproduces music, generally, an artist name, a song name, and the like can be displayed on a display unit.

[0005]

When the above-mentioned semiconductor memory is reproduced by the above-mentioned portable AV equipment, in order to reduce the size of the AV equipment, an artist name and a song name are displayed on a display section on which a television image is displayed. May be displayed. However, in the case of an AV device having a television receiving function and a function of reproducing stored music data, when displaying the artist name and the song name on the display unit when reproducing the music data, an on-screen display of a channel number and the like at the time of television reception is performed. OSD dedicated hardware (O
In addition to the SD signal generation circuit), it is necessary to provide an LSI such as a graphic controller (display control device) for displaying artist names, song names, and the like. For this reason,
By providing two pieces of hardware (circuits) for displaying images, the hardware becomes redundant, which hinders miniaturization of AV equipment and increases power consumption. In addition, a register for the OSD and a register for the display control device must be provided separately, and it takes a lot of time to create software for controlling each register, and the efficiency of software creation is reduced. I do.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and aims at effective use of hardware.
Its purpose is to eliminate hardware redundancy. Another object of the present invention is to reduce the power consumption by reducing the circuit scale. Further, the present invention provides
The purpose is to increase the efficiency of software creation.

[0007]

In order to achieve the above object, an audiovisual device according to the present invention comprises at least one of a radio receiving unit, an audio reproducing unit for reproducing stored music data, and a television. An audio-visual device having a television receiver, a display for displaying a television image received by the television receiver, and audio received by the television receiver or the radio receiver, or the sound reproducer. And an audio output unit for outputting the music data reproduced by the television receiving unit; and a television image received by the television receiving unit and / or image information displayed on the display unit upon reception by the radio receiving unit or upon reproduction of music data by the audio reproducing unit. And a display system for displaying visual information superimposed on the image information displayed on the display unit. It is characterized by having a part, a.

According to the present invention as described above, when a radio reception unit receives radio or a sound reproduction unit reproduces music data, image information (for example, received radio broadcast Frequency, song name or artist name of the music data being played). Furthermore, when a television broadcast is received by the television receiving unit and the television image is displayed as image information on the display unit, or when the image information is displayed on the display unit when receiving radio or playing back music data. Then, the visual information generated by the display control unit is displayed so as to be superimposed on the image information. That is, since the display control unit has an on-screen display (OSD) function, hardware (OS
The D signal generation circuit) can be omitted, and the hardware can be effectively used by eliminating the redundancy of the hardware. In addition, since the circuit dedicated to the OSD can be omitted, the circuit scale can be reduced, the installation space can be reduced, the size of the AV device can be reduced, and the power consumption can be reduced. Can be. Also,
One display control unit is used to display image information on the display unit during radio reception and music data playback, and to perform OSD during television reception, radio reception, and music data playback. The register for displaying the screen and the register for displaying other image information can be shared, and the efficiency of software creation can be improved.

The visual information superimposed on the image information may be channel information (channel number) of the television broadcast being received. By displaying the reception channel in this manner, the broadcast content of each television broadcast station can be easily confirmed, and a desired program can be easily selected. The superimposed visual information may be the brightness of the display unit. Thereby, the degree of brightness of the display unit can be known, and it is possible to easily adjust the brightness to the optimum or desired brightness. The visual information to be superimposed may be sound volume information of the sound output by the sound output unit. This makes it easy to adjust the volume to an optimum level. Further, the superimposed visual information can be the remaining amount of the mounted battery. As a result, it is possible to know the battery replacement time and the charging time, and it is possible to eliminate the inconvenience that the battery is consumed without being known and cannot be used.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the audio-visual equipment according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is a perspective view of an audiovisual device (AV device) according to the embodiment of the present invention. In FIG. 2, an AV device 40 is a portable device that can be driven by an on-board battery, and has a TV reception function, an FM broadcast reception function, a playback function of stored music data, and image data captured by a digital camera. It has a reproducible image reproduction function. The AV device 40 has a display unit 44 having a size of several inches on the upper front surface of the main body 42.
It has. The display unit 44 is formed of a liquid crystal panel or the like, and a lid 46 is provided at the upper end of the front surface of the main body 42 so as to be freely opened and closed.
The cover 46 also has a function of protecting the display unit 44. At the base of the lid 46, a display switch 48 for outputting a pulse signal in conjunction with opening and closing of the lid 46 is provided. When the lid 46 is opened and the display unit 44 is exposed, the display switch 48 is displayed. The unit 44 is turned on to display television video and image information. For example, when receiving radio or playing back music data, the cover 46 is closed and the display unit 4 is closed.
When the screen 4 is shielded, the display unit 44 is turned off and the image information disappears, thereby saving power consumption.

A main switch 50 is provided on the side of the main body 42.
The AV switch 40 can be turned on and off by operating the main switch 50. A selection switch 52 composed of a jog switch is provided below the main switch 50. By operating the selection switch 52, a television reception mode (TV mode), an FM radio reception mode (FM mode),
Select an audio mode for playing back stored music data (sound data), an image mode for displaying image data captured by a digital camera, etc., select a station in the TV reception mode or FM radio reception mode, select a song in the audio mode, etc. It has become so. A menu switch 54 is provided between the main switch 50 and the selection switch 52. By operating the menu switch 54, a menu screen described later can be displayed.

A volume control switch (not shown) is provided on the upper side surface of the main body 42. Further, the main body 42 is provided with an earphone jack serving as an audio output unit, and music data (audio data) can be output by a headphone or an earphone via the earphone jack. Further, the main body 42 is provided with an interface for mounting a memory card serving as an external storage device, and a memory card for recording music or a memory card for recording images is mounted on this interface, so that music reproduction and playback can be performed. Images can be reproduced.

Further, as shown in FIG. 1, the AV device 40 has a built-in antenna 56 for receiving a television broadcast or an FM radio broadcast. Note that an earphone or headphone connected to an earphone jack (not shown) may be used as a receiving antenna instead of incorporating the antenna 56.

The antenna 56 has a TV tuner 58 as a television receiver for receiving a television broadcast.
And an FM tuner 60 which is a radio receiving unit for receiving FM radio broadcasting (FM broadcasting). On the output side of the TV tuner 58, an IF / chroma processing unit 62 is provided, and a TV corresponding to the three primary colors of RGB is provided.
Video signals can be extracted. The video signal extracted from the IF / chroma processing unit 62 is provided to a liquid crystal controller 66 via a display switching unit 64 which is connected to the output side of the IF / chroma processing unit 62 and will be described later in detail. The liquid crystal controller 66 drives a liquid crystal panel realizing the display unit 44, and displays a television broadcast image (TV image) on the display unit 44.

The audio signal received by the TV tuner 58 is detected by an audio detector 68 connected to the IF / chroma processor 62. An audio amplification unit 70 is connected to the output side of the audio detection unit 68. After the audio signal extracted by the audio detection unit 68 is amplified by the audio amplification unit 70, an audio generation unit such as a headphone ( The sound is transmitted to the sound output unit 72 and output as sound. And
The audio signal received by the FM tuner 60 is also input to the audio amplifier 70.

The FM tuner 60 receives a tuning signal from a device control unit 74 including a CPU together with the TV tuner 58. Further, the device control unit 74 includes a memory card (not shown) that stores (records) music data (sound data) or a memory card interface (memory card I / O) into which a memory card storing image data is mounted.
F) 76 is connected. Then, the device control unit 74
The sound data (music data) and image data recorded on the memory card mounted on the memory card I / F 76 are read out, temporarily written and stored in the memory 78, and stored in the memory 7.
8 can be played back.

Further, the output side of the memory card I / F 76 is connected to a music / image reproducing section 80 constituting a sound reproducing section. The music / image reproduction unit 80 is controlled by the device control unit 74, reads data recorded on the memory card mounted on the memory card I / F 76, converts the acoustic data into an analog signal, and outputs the analog signal to the audio amplification unit 70. At the same time, the image data is sent to the device control unit 74.
The device control unit 74 inputs the image data stored in the memory 78 and the image data from the music / image reproduction unit 80 to the display control unit 82, and the display control unit 82 transmits the image data to the display switching unit 64. give. The image data input to the display switching unit 64 is output to the liquid crystal controller 66 and displayed on the display unit 44 as image information. And
A VRAM 84 is connected to the display control unit 82,
Frame data of image information displayed on the display unit 44 is temporarily written.

The device control section 74 is connected to the main switch 50, the menu switch 54, and the selection switch 52, and is connected to a volume control section 86.

As shown in FIG. 3, the display switching section 64 includes an OSD superimposition circuit 90 to which a TV video signal from the IF / chroma processing section 62 is input, and a switching circuit provided on the output side of the OSD superimposition circuit 90. 92. Then, the display switching unit 64 is configured to input a display signal from the display control unit 82 to the OSD superimposing circuit 90 and the switching circuit 92. The switching circuit 92 outputs the output signal of the OSD superimposition circuit 90 to the liquid crystal controller 66 and the display signal output by the display control unit 82 directly to the liquid crystal controller 66 according to the switching signal from the device control unit 74. Can be switched to a position.

The AV device 40 according to this embodiment stores the function selected when the power is turned off by the main switch 50. When the main switch 50 is turned on again, the main switch 50 is turned off. The function selected at the time of starting automatically starts. That is, if the main switch 50 is turned off while the TV is being received by the AV device 40, the next time the main switch 50 is turned on, the television broadcast of the channel when the main switch 50 was turned off is received. However, since the display switch 48 is operated in conjunction with the opening and closing of the lid 46 and a pulse signal is output to the device control unit 74, when the lid 46 is closed and the display unit 44 is closed, the display unit 4 is closed.
No image is displayed on the display unit 4 and the display unit 44 is opened by opening the lid 46.
Is exposed, the display unit 44 displays an image of the reception channel. When the menu switch 54 is operated, the menu screen 94 shown in FIG.

The menu screen 94 is a screen for selecting a function of the AV device 40, and selectable functions are displayed by characters. Then, for example, when the menu screen 94 is displayed during reception of a television broadcast, as shown in FIG. 4A, a cursor 96 is displayed on the item of “TV” which is the currently selected function. Selection of a function is performed by a selection switch 5 composed of a jog switch provided on the main body 42.
2 by operating the cursor 96 in the vertical direction.

In the AV device 40, when the television receiving function is selected by the selection switch 52, the device control unit 74 outputs a switching signal to the switching circuit 92 of the display switching unit 64, and the display control unit 82 and the liquid crystal controller 66 And the OSD superimposing circuit 90 is connected to the liquid crystal controller 66. As a result, the TV video signal from the IF / chroma processing unit 62 input to the OSD superimposing circuit 90 is given to the liquid crystal controller 66, and as shown in FIG. Is done.

When the receiving channel is switched by the selection switch 52 or the channel search is performed by selecting the channel search function, the device control unit 74
A channel switching signal is output to the TV tuner 58, and a reception channel signal is sent to the display control unit 82 so that the OSD superimposition circuit 90 outputs a display signal of the channel number being received. The channel display signal output from the display control unit 82 is output to the OSD
The number 102 of the receiving channel is superimposed on the video signal, and as shown in FIG. 5, is superimposed on the television image 100 as visual information on the display unit 44 as on-screen display (OSD). When the brightness and volume of the display unit 44 are adjusted by operating the selection switch 52, the brightness or volume is displayed together with the display such as "brightness" and "volume". The index 104 indicating whether or not the image is displayed on the television image 100 as visual information.

In addition, other functions from the television reception function, for example, a memory card is mounted on the memory card I / F 76,
As shown in FIG. 4 (2), when the function is switched to the “Audio” function of reproducing the stored music data, the device control unit 74 outputs a switching signal to the switching circuit 92 of the display switching unit 64, and performs OSD superposition. The circuit 90 is disconnected from the liquid crystal controller 66, and the display control unit 82 is connected to the liquid crystal controller 66. Then, the music / image reproducing unit 80 reads out the music data recorded in the memory card, decodes the music data into an analog signal, and outputs an analog audio signal to the audio amplifier 70. Further, image data such as an artist name and a song name recorded on the memory card is read out by the music / image reproducing unit 80 and sent to the device control unit 74. The device control unit 74 displays image data input from the music / image reproduction unit 80 with the display control unit 82
Give to. The display control unit 82 creates frame data to be displayed on the display unit 44 based on the image data input from the device control unit 74, and creates a switching circuit 92 of the switching control unit 64.
Is output to the liquid crystal controller 66 via the. As a result, as shown in FIG. 6, information on the reproduced music, such as the artist name, music name (title), and track number, is displayed on the display unit 44 as image information.

When the FM reception function is selected and the channel selection operation is performed by the selection switch 52, the device control unit 74 outputs a channel selection signal to the FM tuner 60. And
The device control unit 74 outputs a signal indicating that the FM reception function has been selected and the reception frequency to the display control unit 82, and indicates that the display control unit 82 is receiving FM broadcasting.
And the reception frequency are output to the switching circuit 92 and displayed on the display unit 44 as image information.

As described above, in the present embodiment, the reception frequency and the like are displayed as image information on the display unit 44 when the FM broadcast is received by the display control unit 82, and the artist name and the song title are displayed when the stored music data is reproduced. Display section 44
In addition to displaying as image information, the channel number, screen brightness level, volume level, etc., received at the time of TV reception are superimposed (superimposed) on the TV image as visual information. Therefore, the hardware (OSD signal generation circuit) dedicated to the OSD, which has been conventionally required, can be omitted, and the redundancy of the hardware can be avoided, and the hardware can be effectively used. And OS
Since a circuit dedicated to D is not required, the installation space for the circuit can be reduced, the size of the AV device 40 can be reduced, and power consumption can be reduced. In addition, since the OSD at the time of television reception and the display of an image at the time of radio reception or music reproduction are performed by one display control unit 82,
A register for displaying the OSD and another image can be shared, and the efficiency of software creation can be increased.

The display for adjusting the volume and the display for adjusting the brightness of the screen are superimposed and displayed on the image data as visual information at the time of radio reception, reproduction of music data, reproduction of image data, and the like. be able to. Further, the device control unit 74 monitors the remaining amount of a battery (not shown) for driving the AV device 40 based on the output voltage of the battery and the like. This is displayed on the display unit 44 as visual information. This makes it possible to know when to replace or charge the battery mounted on the AV device 40, and to prevent running out of the battery during use.

[0028]

As described above, the reception frequency is displayed on the display unit at the time of reception by the radio reception unit, and the artist name, song name, and the like are displayed on the display unit when the stored music data is reproduced by the sound reproduction unit. By the display control unit,
Hardware necessary for on-screen display (OSD signal generation circuit) because necessary visual information is displayed by superimposing it on the television image when receiving television
Can be omitted, and the hardware can be effectively used by eliminating the redundancy of the hardware.

Since the circuit dedicated to the OSD can be omitted, the scale of the circuit can be reduced, the installation space can be reduced, the size of the AV equipment can be reduced, and the power consumption can be reduced. Can be achieved. In addition, since the display of image information on the display unit at the time of radio reception and music data reproduction and the OSD at the time of television reception, radio reception and music data reproduction are performed by one display control unit, visual information is displayed. A register for displaying on-screen and a register for displaying other image information can be shared, and the efficiency of software creation can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of an AV device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the AV device according to the embodiment of the present invention.

FIG. 3 is a block diagram illustrating details of a display switching unit according to the embodiment;

FIG. 4 is an explanatory diagram of a function selection screen of the AV device according to the embodiment.

FIG. 5 is an explanatory diagram of an on-screen display according to the embodiment.

FIG. 6 is an explanatory diagram of an image displayed on a display unit during music playback according to the embodiment.

FIG. 7 is a block diagram of a conventional television receiver.

[Explanation of symbols]

40 AV device, 44 display unit, 50 main switch, 52 selection switch, 58 television receiver (TV tuner), 60 radio receiver
(FM tuner), 62: IF / chroma processing unit, 64
...... Switching control unit 68 68 Voice detection unit 70
... Sound amplifying unit, 74 ... Device control unit, 76 ... Memory card interface, 80 ... Reproducing unit (voice
Image playback unit), 82 Display control unit, 100 TV image, 102, 104 Visual information (channel number, index).

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Claims (5)

[Claims] 1. An audio-visual device having at least one of a radio receiving unit and an audio reproducing unit for reproducing stored music data, and a television receiving unit, wherein the television receiving unit receives A display for displaying a video; an audio output unit for outputting audio received by the television receiving unit or the radio receiving unit or music data reproduced by the audio reproducing unit; and a television for receiving the television receiving unit Video and / or
Or a display control unit for displaying image information on the display unit and displaying visual information superimposed on the image information displayed on the display unit during reception by the radio reception unit or music data reproduction by the sound reproduction unit. An audio-visual device comprising: 2. The audio-visual device according to claim 1, wherein the superimposed visual information is channel information of the television broadcast being received. 3. The display device according to claim 1, wherein the superimposed visual information is brightness information of the display unit.
Audio-visual equipment as described in. 4. The audio-visual device according to claim 1, wherein the visual information to be superimposed is sound volume information of a sound output from the sound output unit. 5. The audio-visual device according to claim 1, wherein the superimposed visual information is a remaining amount of a mounted battery.