JPH1079901A - Television receiver equipped with audio exclusive mode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an audio exclusive mode by driving an input audio signal processing means according to an audio exclusive mode signal, and generating a processed audio signal. SOLUTION: When an audio exclusive mode is selected by the user of a TV 100, a key inputting device 170 supplies an audio exclusive mode signal to a controller 150. The controller 150 stops the driving of a video picture displayer 160 according to the audio exclusive mode signal, drives an audio signal processing circuit 125, and supplies a processed audio signal. On the other hand, when an input audio signal is inputted to the audio signal processing circuit 125 under a condition that a video signal is not inputted to a video signal processing circuit 135, the controller 150 stops the driving of the video picture displayer 160 even when the audio exclusive mode signal is not generated from the key inputting device 170, drives the circuit 125, and supplies the processed audio signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly, to a television receiver capable of implementing an audio-only mode.

[0002]

2. Description of the Related Art As is well known, a conventional television receiver has an RF (radio) input thereto through an antenna.
frequency) signal or an A / V signal external to a television receiver, such as a video cassette recorder.
(Audio / Video) Through a transmission line from a signal supply device, a line A / V signal input thereto is received as an input signal.

[0003] A television receiver (hereinafter referred to as a TV) having a video and audio signal processing circuit processes an input signal and supplies a processed audio and video signal. Thereafter, the TV displays the video image of the processed video signal on a display (for example, a cathode ray tube), and reproduces the sound of the processed audio signal through a speaker.

Recently, with the improvement of the functions of audio equipment (for example, speakers and audio signal processing circuits of conventional TVs), conventional TVs have been transferred from audio equipment such as portable cassette recorders and small disc players through transmission lines. It is also used to process input audio signals that are input to.

However, in a conventional TV, in order to process an input audio signal from audio equipment,
Conventionally, a video image display in a TV had to be driven. That is, the conventional TV cannot implement the audio-only mode. Here, the audio-only mode is a TV that reproduces only the sound of the processed audio signal without generating the processed video signal by stopping the driving of the TV video image display.
Represents the operation mode.

[0006] A conventional TV generates unnecessary electromagnetic energy when driving a video image display, which may harm the human body.

[0007]

SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a television receiver capable of implementing an audio-only mode.

[0008]

According to the present invention, there is provided, in accordance with the present invention, a television receiver (TV) having an audio-only mode for processing an input audio signal. Input audio signal processing means for generating an audio signal, input video signal processing means for processing an input video signal and generating a processed video signal, and display means for displaying a video image of the processed video signal. An audio-only mode signal generating means for generating an audio-only mode signal in response to an audio-only mode selection command; and controlling the display means to stop driving in response to the audio-only mode signal, thereby controlling the input audio signal processing. Control means for driving the means for generating said processed audio signal Television receiver having an audio-only mode, wherein there is provided to have a.

[0009]

Preferred embodiments of the present invention will be described below in detail with reference to the drawings.

Referring to FIG. 1, there is shown a block diagram of a television receiver (hereinafter referred to as a TV) 100 according to a preferred embodiment of the present invention. The TV 100 includes a tuner 110, an intermediate frequency (IF) amplifier 115, and a detector 1
20, audio signal processing circuit 125, speaker 13
0, a video signal processing circuit 135, an on-screen display (OSD) 140, a controller 150, a video image display 160, and a key input device 170.

The TV 100 receives an RF broadcast signal through an antenna (not shown) or, if not, an A / V (audio / video) signal supply device external to the TV 100 such as a video cassette recorder. Through a transmission line, and receives a line A / V signal inputted thereto as an input signal.

More specifically, the RF broadcast signal is input to a tuner 110, and the line video and audio signals are input to a video signal processing circuit 135 and an audio signal processing circuit 125 through lines L10 and L20, respectively. The tuner 110 performs tuning on the RF broadcast signal to tune the RF broadcast signal.
The broadcast signal is supplied to the IF amplifier 115. IF amplifier 1
15 performs IF amplification on the tuned broadcast signal and supplies the IF-amplified signal to the detector 120. The detector 120 detects an audio signal and a video signal from the IF-amplified signal, and outputs the audio signal as a detected audio signal to the video signal processing circuit 135 via a line L30. Each is supplied to the signal processing circuit 125.

The video signal processing circuit 135 processes the input video signal (that is, a line video signal or a detected video signal) to generate a processed video signal, and supplies the processed video signal to the OSD 140. . Further, the video signal processing circuit 135 supplies operation information indicating various operation states of the video signal processing circuit 135 itself to the controller 150.

The audio signal processing circuit 125 processes the input audio signal (ie, a line audio signal or a detected audio signal) to generate a processed audio signal, and supplies the processed audio signal to the speaker 130. Further, the audio signal processing circuit 125 supplies operation information indicating various operation states of the audio signal processing circuit 125 itself to the controller 150.

Referring to FIG. 3, there is shown a schematic diagram of the key input device 170 in FIG. For example, a wireless infrared remote controller is widely used as the same as the key input device 170. Therefore, for convenience of explanation, FIG.
1 shows a schematic diagram of a wireless infrared remote controller as the key input device 170 in FIG.

The key input device 170 includes a power on / off button 350, an audio control mode selector 300 for generating various audio mode signals, a channel selector 360 for generating a channel selection mode signal, and a video image state (for example, A video image mode signal generation unit 365 for generating various video image mode signals for controlling the luminance is provided, and another mode selection unit for generating other mode signals (for example, a current time display mode signal).

The audio control mode selection unit 300 generates an audio-only mode signal when pressed once, and an audio-only mode button 302 and a mono / mode button that generate an audio-only mode cancel signal when pressed again.
Comprising 304 for generating a stereo mode signal, each of which comprises:
Volume up and down buttons 306 and 308 are provided to generate volume up and down mode signals.

The key input device 170 supplies various mode signals to the controller 150 according to a command of the user of the TV 100. For example, the key input device 170 supplies a volume increase mode signal to the controller 150 according to a corresponding command from the user of the TV 100. Here, the corresponding instruction is T
This is performed by the user of V100 pressing the volume increase button 306. For example, the controller 150, which may be a microprocessor or a microcomputer, controls various signals from the key input device 170 based on information received, such as, for example, operational information from the audio signal processing circuit 125 and the video signal processing circuit 135. According to the mode signal, for example, the audio signal processing circuit 125, the OS
It generates control signals for controlling the overall operation of the TV 100, such as the operation of the D140, the video signal processing circuit 135, and the video image display 160.

The speaker 130 reproduces the sound of the processed audio signal.

If the OSD signal (eg, the volume increase OSD signal) and the corresponding control signal (eg, the volume increase OSD control signal) are not input thereto from the controller 150, the OSD 140 performs this processing without any processing there. Is transmitted directly to the video image display 160. Here, the OSD signal is the TV 100
Is a video signal expressed as a character or a pattern at a specific position in the upper or lower corner of the screen of the video image display 160, which characterizes the operation mode, current time, and the like.

However, if the OSD signal and the corresponding OSD control signal are inputted thereto from the controller 150, the OSD 140 responds to the corresponding OSD control signal by the OSD signal.
The SD signal is mixed with the processed video signal, and the mixed video signal is supplied to the video image display 160. Then, the video image display 160
The video image of the mixed video signal is displayed for a predetermined time according to the corresponding OSD control signal input thereto from the controller 150.

According to another preferred embodiment of the present invention, instead of the OSD 140 displaying the video image of the mixed video signal in response to the corresponding OSD control signal, the controller 150 controls only the video image of the OSD signal. Can be controlled to be generated. In this case, the controller 150 changes the video image of the OSD signal received from the OSD 140 by the video image display 160 in response to the corresponding OSD control signal, for example, for a predetermined time below the background of the bull-back screen. Control to display in the middle.

The operation of the TV 100 in the audio only mode according to the preferred embodiment of the present invention will be described with reference to FIG. The controller 150 determines whether an audio-only mode signal is input thereto from the key input device 170 under the condition that power is supplied to the TV 100, and determines whether the input audio and video signals are output from the audio signal processing circuit 125 and the video signal processing circuit 125, respectively. A search is performed to determine whether the signal is input to the signal processing circuit 135. If in step 200,
For example, when the audio-only mode is selected by a corresponding audio-only mode selection command issued by pressing the audio-only mode button 302 by the user of the TV 100, the key input device 170 sends an audio-only mode signal to the controller 150. Supply.

If the audio-only mode signal is generated from the key input device 170, the controller 150 stops driving the video image display 160 in step 202 according to the audio-only mode signal, and proceeds to step 204. Drives the audio signal processing circuit 125 to supply a processed audio signal. If the audio only mode has not been selected on the key input device 170 in step 200, the process proceeds to step 220.

On the other hand, when the input audio signal is input to the audio signal processing circuit 125 under the condition that the video signal is not input to the video signal processing circuit 135, the controller 150 transmits the audio-only mode signal from the key input device 170. Is not generated, the driving of the video image display 160 is stopped in step 202, and the audio signal processing circuit 125 is driven in step 204 to supply the processed audio signal.

At step 220, the controller 150
100 to operate in another mode (ie, video only mode). Here, the other modes are
The operation mode of the TV 100 set by the controller 150 based on the corresponding other mode signal generated from the key input device 170, or the operation mode in which the controller 150 was previously set immediately before step 200. Note the gain.

Thereafter, in step 206, under the condition that the video image display 160 is stopped, the volume increase / decrease mode is set by the key input device 170 according to the user's volume increase / decrease mode selection command. When selected, the key input device 170 generates a volume increase and decrease mode signal, respectively.

Thereafter, the controller 150 proceeds to step 20.
At 8, the video image display 160 is driven according to the volume increase mode and decrease mode signals, respectively.
In response to the volume increase and decrease mode signals, a volume increase and decrease control signal is transmitted to the audio signal processing circuit 125, the video image display 160 and the OSD1.
40 respectively. Subsequently, the controller 150 controls the audio signal processing circuit 125 to generate a volume-increased and a volume-decreased audio signal in step 210 according to the volume-increase and decrease-mode control signals.

The controller 150 also controls the volume increase and decrease O in response to the volume increase and decrease mode signals.
The SD signal is supplied to each OSD 140. Here, the volume increase and decrease OSD signals represent the volume level of the processed audio signal whose volume has been increased and decreased, respectively. Further, the controller 150 determines in step 21
At 0, the OSD 140 sends the volume increase and decrease OSD signals to the video image display 160 according to the volume increase and decrease control signals, respectively, to control the OSD 140 to be displayed for a predetermined time. Thereafter, the controller 150 stops driving the video image display 160 in step 212. Then, the above process returns to step 206 again.

If it is determined in step 206 that neither the volume increase mode nor the volume decrease mode is selected, the above process proceeds to step 214. In step 214, when the audio-only mode is canceled, that is, according to the user's audio-only mode cancel selection command, for example, the audio-only mode button 302 in the key input device 170 is pressed once and then pressed again. Accordingly, if an audio-only mode cancellation signal is generated from the key input device 170, the controller 150 responds to the audio-only mode cancellation signal in step 216,
The video image display 160 is driven, and then the above process proceeds to step 220. At step 220, other modes (ie, non-audio only mode)
Continue until the end. However, if the audio-only mode is not canceled in step 214, the process returns to step 206.

While the preferred embodiment of the present invention has been described above, those skilled in the art will be able to make various modifications without departing from the scope of the present invention.

[0032]

Thus, according to the present invention, it is possible to provide a television receiver capable of implementing the audio only mode.

[Brief description of the drawings]

FIG. 1 is a block diagram of a television receiver according to a preferred embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of a television receiver capable of implementing an audio-only mode according to a preferred embodiment of the present invention.

FIG. 3 is a schematic sectional view of the key input device in FIG. 1;

[Explanation of symbols]

 110 Tuner 115 Intermediate Frequency (IF) Amplifier 120 Detector 125 Audio Signal Processing Circuit 130 Speaker 135 Video Signal Processing Circuit 140 On-Screen Display (OSD) 150 Controller 160 Video Image Display 170 Key Input Device

Claims (11)

[Claims] 1. A television receiver (TV) having an audio-only mode, comprising: an input audio signal processing means for processing an input audio signal and generating a processed audio signal; Input video signal processing means for generating a processed video signal; display means for displaying a video image of the processed video signal; and an audio-only mode signal for generating an audio-only mode signal according to an audio-only mode selection command. Generating means, and control means for controlling the driving of the display means to be stopped according to the audio-only mode signal, driving the input audio signal processing means, and generating the processed audio signal. With a dedicated audio mode. Vision receiver. 2. The method according to claim 1, wherein the control unit is configured to, if the input audio signal is input to the audio signal processing unit under a condition that the input video signal is not supplied to the input video signal processing unit, Even if the audio-only mode signal is not generated from the mode signal generating unit, the control unit controls the driving of the display unit to be stopped, drives the signal processing unit, and generates the processed audio signal. The television receiver provided with the audio-only mode according to claim 1, wherein the television receiver is controlled. 3. The audio-only mode signal generating means according to an audio-only mode cancel selection command,
3. The television receiver having the audio-only mode according to claim 2, wherein the television receiver generates an audio-only mode signal cancellation signal. 4. The television receiver according to claim 3, wherein said control means drives said display means in response to said audio only mode cancel signal. 5. An audio-only mode signal generating means for generating a volume increase mode signal in response to a volume increase mode selection command, and generating a volume decrease mode signal in response to a volume decrease mode selection instruction. The television receiver provided with the audio-only mode according to claim 4, further comprising volume reduction mode signal generation means. 6. The control means drives the display means in response to the volume increase and decrease mode signals, and generates volume increase and decrease control signals, respectively, and the input audio signal processing means controls the volume of the input audio signal. In response to the increase and decrease control signals, control is performed to generate a processed audio signal whose volume has been increased and decreased by a predetermined volume, respectively, and the volume has been increased and decreased according to the volume increase and decrease mode signals. Volume increase and decrease OSD (on screen display) respectively representing the volume level of the increased and decreased processed audio signal
The television receiver with an audio-only mode according to claim 5, wherein the television receiver supplies signals. 7. The audio-only mode according to claim 6, wherein an OSD is performed according to the volume increase / decrease control signal and the volume increase / decrease OSD signal is supplied to the display means. Equipped television receiver. 8. The apparatus according to claim 1, wherein the display means displays the video images of the volume increase and decrease OSD signals for a predetermined time according to the volume increase and decrease control signals. A television receiver comprising the audio-only mode according to 7. 9. Tuning means for tuning an RF (radio frequency) broadcast signal to generate a tuned RF broadcast signal; and performing intermediate frequency amplification on the tuned RF broadcast signal to perform intermediate frequency amplification. Amplified signal generating means for generating an audio signal and a video signal, and an audio and video signal detecting means for detecting an audio and video signal from the intermediate frequency amplified signal as detected audio and video signals, respectively. A television receiver provided with the audio-only mode according to claim 8. 10. The input audio signal is one of a line audio signal input from outside the television receiver through a transmission line and the detected audio signal, and the input video signal is The television having the audio-only mode according to claim 9, wherein the television is one of a line video signal inputted from outside the television receiver through a transmission line and the detected video signal. Receiving machine. 11. The television receiver according to claim 9, wherein said display means is a cathode ray tube.