JPH01303990A - Television telephone set - Google Patents

Abstract

PURPOSE:To attain picture display corresponding to the kind of a specific audio signal by using a specific audio signal detection section so as to detect plural kinds of specific audio signals and outputting a prescribed picture display data from a picture generating section in response to the kinds and displaying the data on a monitor. CONSTITUTION:An audio signal supplied to a telephone section 2 is supplied also to a specific audio signal detection section 4, which detects a specific audio signal. When the specific audio signal detection section 4 supplies the result of detection to a specific display control section 6, the control section 6 sends a control signal to a picture generating section 5 and a selector 7. The picture generating section 5 stores a picture data corresponding to the specific audio signal registered in advance in an internal memory. Then the selector 7 supplies a picture data from the picture generating section 5 to a video section 1. Thus, a picture corresponding to the kinds of specific audio signals is displayed on a monitor section 9.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a videophone device that transmits and receives still images obtained by a television camera, and in particular to improvements in the output expression of specific audio signals sent through a communication line. Regarding.

[Background Art] With the recent advancements in various communication media and devices, teletelephone devices that use communication lines to send and receive not only audio but also images are becoming popular. Such a videophone device modulates an image signal obtained by a television camera installed in its own videophone device into a signal similar to a signal for normal voice communication, transmits it to the communication partner, and receives the signal. This is demodulated and displayed on the display. According to such a videophone device, since it is possible to grasp not only the voice but also the facial movements of the communication partner, it is possible to convey intentions and information in a sophisticated manner.

[Problems to be Solved by the Invention] As described above, by using a video telephone device, it is possible to send and receive both audio and images. However, image display in conventional videophone devices is limited to images obtained by the other party's TV camera or images obtained by the user's own TV camera.

In other words, although conventional videophone devices have a display that displays images in addition to a speaker that outputs audio, they do not display information such as incoming calls, calls in progress, ringing, outgoing calls, etc. sent from the exchange through the line. There is a problem in that a specific audio signal can only be displayed by audio. Therefore, there is a problem in that people who are hearing impaired or the like cannot make full use of the video telephone device despite the presence of a display.

This invention was made with the aim of solving the above-mentioned problems, and provides a videophone that can detect a specific audio signal sent through a line and display a display corresponding to the detected specific audio signal. The purpose is to provide equipment.

[Means for Solving the Problems] The videophone device according to the present invention detects a plurality of types of specific audio signals sent via a reception line by a specific audio signal detection section, and detects the specific audio signals detected here. By outputting predetermined image display data from the image generation section according to the type of image, and when a specific signal is detected by the specific signal detection section, the signal from the image generation section is supplied to the monitor via the selector and displayed there. The system is characterized by displaying images corresponding to the type of specific audio signal sent through the line.

[Function] Since the video telephone device according to the present invention has the above-described configuration, when a specific audio signal is sent through the reception line, it is detected by the specific audio signal detection section. The specific audio signal detection section determines the type of the specific signal, supplies a signal corresponding to this type to the image generation section, and notifies the selector that the specific audio signal has been detected.

Then, the image generation section supplies pre-stored image data corresponding to the characteristic audio signal to the selector, but at this time, the selector supplies the signal from the image generation section to the monitor in response to a signal indicating that the specific audio has been detected. Therefore, the image generated by the image generation section is displayed on the monitor.

Therefore, according to the present invention, when a signal-specific voice signal indicating an incoming call, a call in progress, a call, etc. is sent through a telephone line, an image indicating the fact can be automatically displayed on the monitor.

[Embodiment] Next, a video telephone device according to an embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the configuration of main parts of a videophone device according to an embodiment. In the figure, (1) is the video part;
(2) is a telephone section, (3) is a control section, (4) is a specific audio signal detection section, (5) is an image generation section, (6) is a control section, (7)
) is a selector. Further, the video section (1) includes a camera section (8) for photographing an image and a monitor section (9) for displaying the image.

In such a videophone device, the camera section (8)
The image signal obtained is subjected to predetermined processing and then transmitted to the communication partner through a communication line (transmission line). In addition, the image signal sent from the communication partner through the communication line (receiving line) is sent to the selector (7) after being subjected to predetermined processing.
is supplied to the monitor section (9) and displayed there.

On the other hand, transmission and reception of audio signals through communication lines (transmission line, reception line) is performed using a handset or the like provided in the telephone section (2). Note that the control section (3) is the video section (1).
and the telephone section (2).

Here, in the present invention, the audio signal supplied to the telephone section (2) is also supplied to the specific audio signal detection section (4). The specific audio signal detection section (4) detects specific audio signals. These specific audio signals include, for example, signals for call tones, ring tones, ring tones, dial tones, etc. These signals are converted into predetermined sounds in the telephone section (2), but the specific audio output is This is also detected in section (4).

The specific audio signal detection section (4) then supplies the detection result to the specific display control section (6). When the insertion is performed, the specific display control section (6) sends a control signal to the image generation section (5) and the selector (7).

The image generating section (5) stores image data corresponding to a specific audio signal registered in advance in an internal memory. When a signal of a specific signal type is detected by the specific display control section (6), image data corresponding to this is supplied to the selector (7).

On the other hand, the selector (7) transfers the image data from the image generation section (5) to the video section (1) according to a signal from the control section (6).
supply to. Therefore, an image corresponding to the type of specific audio signal detected by the specific audio signal detection unit (4) is displayed on the monitor unit (9).

Note that the image corresponding to the specific audio signal is generated by the image generator (5).
), but it is determined by the content of memory in ).
For example, the following display can be made.

(a) Incoming call: Full-screen flashing display.

(b) Available to send: Display of messages that can be sent.

(c) During a call: Displays a message indicating that a call is in progress.

(d) Calling: Message display indicating that a call is in progress.

The storage of such a specific image in the image generating unit (5) is preferably in a memory with a backup function, a non-volatile memory, etc., but it is also possible to store it in the form of a magnetic card or IC card, for example, so that the contents can be changed by replacing it. Good too.

Next, what is shown in Fig. 2 is a specific audio signal detection section (4).
FIG. 2 is a block diagram showing an example of a detailed configuration. In the figure, (10) is a switch that operates in conjunction with a hook switch that is turned on and off depending on whether the handset is picked up, (11) is a bandpass filter that extracts a 16H2 signal, and (12) is a band that extracts a 400Hz signal. Pass filter, (13) and (14) are comparators that compare the signal strength with a reference value, (15) is a rectifier circuit, (16')
is a comparator that compares the rectified signal with a reference value, (17)
(18) and (19) are impression voltage setting devices.

In such a specific audio signal detection unit (4), the switch (10) is connected to the contact A side when the handset is not picked up and is in an on-hook state. Therefore, the signal from the communication line is input to the rectifier (15). After being rectified here, it is compared with a reference potential supplied from the emotional voltage value setter (19) in a comparator (16).

A calling signal can be detected based on the comparison result of this comparator (16).

Here, in the on-hook state, the only thing that may be provided from the line is an incoming signal that rings the ringing bell. The incoming signal is a signal modulated at 16 Hz at a high voltage of about 75V. Therefore, after being rectified by the rectifier (15), the calling signal can be detected by comparing it with a predetermined reference voltage. Furthermore, since the contact A of the switch (10) is not connected to any other circuit, it is possible to prevent high voltage from being applied to the telephone section (2) or the like. Note that this switch (10) may also be used to supply power to the calling bell.

Further, the sound that can be transmitted is a continuous sound of 40'OHZ, and the sound during a call is an intermittent sound of 400Hz that is on for 0.5 seconds and off for 0.5 seconds. Furthermore, the ringing tone of the other party's phone is 1.
This is a signal obtained by modulating a 6Hz signal at 400Hz. These signals are detected only in the hook-off condition when the handset is picked up. Therefore, detection is made with the switch (10) connected to contact B. That is, a comparator (1) detects a signal that has passed through a bandpass filter (11).
1) allows the ringing signal to be detected. In addition, the ready-to-call signal and the busy signal are detected by a comparator (1) that detects the signal that has passed through the band-pass filter (12).
2), but this comparator (
The signal detection unit (17) can detect whether the signal is an intermittent signal or a continuous signal based on the output result of step 12).

In this manner, the signal detection/judgment section (17) can detect the incoming call, outgoing call, busy, and ringing signals based on the signals from the comparators (13), (14), and (16).

In this way, the specific audio signal detection section (4)
Various types of specific audio signals supplied from communication lines can be detected. Then, this detection result is supplied to the specific display control section (6), and the above-mentioned display control is performed.

[Effects of the Invention] As explained above, according to the videophone device according to the present invention, various specific audio signals sent through a communication line can be detected and displayed on the monitor, so that the videophone device can be recognized visually. This effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of essential parts of a videophone device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the detailed configuration of a specific audio signal detection section (4) of the same embodiment. . In the figure, (4) is a specific signal detection section, (5) is an image generation section, and (7) is a selector. In the figure, the same reference numerals indicate the same or equivalent parts. Agent: Patent attorney Masuo Oiwa (2 others) Procedural amendment (voluntary)

Claims (1)

[Claims] A videophone device that transmits and receives audio and images includes: a specific audio signal detection unit that detects multiple types of specific audio signals sent via a reception line; an image generation section that outputs predetermined image display data according to the type of specific audio signal; a selector that outputs a signal from the image generation section when a specific signal is detected by the specific signal detection section; and a signal from the selector. and a monitor section that accepts and displays an image, depending on the type of specific audio signal sent through the line.
A videophone device characterized by displaying a corresponding image.