JPH057792Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement of a telephone device with an added function of displaying call time.

[Technical background of the invention]

Conventionally, as this type of device, there is one shown in FIG. 1, for example. That is, this device has a liquid crystal display 1 and a display control circuit 2 equipped with a microprocessor as a main control section. and,
This display control circuit 2 switches the changeover switch 3 to contact a during standby, thereby transmitting the current time information consisting of month/day information and hour/minute/second information timed by the timer circuit 4 via the display drive circuit 5. is displayed on the liquid crystal display 1. On the other hand, when the other party's telephone responds to the call, the polarity of the telephone line 6 is reversed, and this is detected by the polarity reversal detection circuit 7, the changeover switch 3 is switched to contact b, and the timer circuit 8 is reset to start a time counting operation, and the output of the counted time is displayed on the liquid crystal display 1 in place of the current time information. The call time is then displayed. Note that 9 is a loop detection circuit for detecting closure of the DC loop.

With such a device, it is possible to know the time required for a call after the call ends, and this call time can be used to calculate call charges, etc., thereby improving serviceability.

[Problems with background technology]

However, such conventional devices use a changeover switch to display current time information when in standby mode, and only call time information during a call. Even if I wanted to know the time, I couldn't.
It was inconvenient.

[Purpose of invention]

An object of the present invention is to provide a telephone device with high serviceability, which allows checking not only the call time but also the current time even during the call period.

[Summary of the idea]

In order to achieve the above object, the present invention includes a first clock circuit that measures the current time including month and day information and outputs the current time information, and a first clock circuit that measures the call time and outputs the call time information. In addition to the second clock circuit, the present invention includes a visual display having a first display area and a second display area, a display switching means, a polarity reversing circuit, and a display control means. The display switching means divides and displays the current time information in the first display area and the second display area during the line call standby period, and displays the current time information in the first display area during the line call standby period. Part of the current time information is transferred from the second display area and displayed, and the call time information is displayed in the second display area, and the polarity reversal detection circuit is configured to detect the polarity reversal. Correspondingly, the display control means controls the switching of the display switching means and also controls the start-up of the second clock circuit.

[Example of idea]

FIG. 2 is a circuit block diagram showing the configuration of a telephone device according to an embodiment of the present invention. In this figure, the same parts as those in FIG. 1 are given the same reference numerals and detailed explanations will be omitted.

This device has a liquid crystal display 10 with first and second
are provided with display areas 10a and 10b, respectively, and two display drive circuits 5a and 5 are provided accordingly.
b. It also has a changeover switch circuit 11 having a pair of interlocking contacts, each of which is connected as follows. That is, the date information generating section 4a of the timer circuit (TIM ₁ ) 4 is connected to the contact a on the side of the interlocking contact piece 11a, and the contact a on the side of the interlocking contact piece 11
Contacts b and a of contacts a and 11b are commonly connected to the time information generating section 4b of the timer circuit 4.
Further, contact b of the other interlocking contact piece 11b is connected to a timer circuit (TIM ₂ ) 8.

Next, we will explain the operation of the device configured as above.
This will be explained according to the display control flowchart shown in FIG.

First, during standby, the display control circuit 2 turns on the timer circuit 4 to measure time, and
Each interlocking contact piece 11a, 11 of the changeover switch circuit 11
Switch and set contact b to contact a, respectively. Therefore, the first display area 10a of the liquid crystal display 10 displays the month and day information of the current time information, and the second display area 10b displays the time information of the current time information. In other words, the hours and minutes are displayed. An example of the display is shown in FIG. 4a. During this standby period, the display control circuit 2 monitors the detection output of the polarity reversal detection circuit (RV) 7 after loop detection.

In this state, for example, when a call is made to an arbitrary party and the telephone of the other party responds to the call, the polarity of the telephone line is reversed and the polarity reversal detection circuit 7 generates a detection output. At this point, the result display control circuit 2 resets the timer circuit 8 to start a time counting operation, and switches each interlocking contact piece 11a, 11b of the changeover switch circuit 11 to the contact point b. Then, in the first display area 10a of the display 10, the current time information is displayed in place of the current month and day information that had been displayed up until then. In addition, in the second display area 10b, instead of the current time information that had been displayed up to that point, call time information (the time since the other party went off-hook) measured by the timer circuit 8 is displayed. Figure 4b
shows an example of the display state. That is, in the call period, not only the call duration but also the current time is displayed. Also, during this call period, the display control circuit 2 monitors the output of the loop detection circuit 9 and the output of the polarity reversal detection circuit 7, and assumes that the call has ended when either one occurs. The time counting operation of the timer circuit 8 is stopped. Then, the stopped call time is displayed continuously for a certain period of time, for example, 8 seconds, and after this period has passed, the interlocking contacts 11a and 11b of the changeover switch circuit 11 are switched to the contact a side and restored. The control operation moves to the standby state. If an off-hook operation is performed during the call time display period (8 seconds), a detection signal is generated from the loop detection circuit 9, so the display control circuit 2 does not display the call time at that point. Abandon it and return to the initial state as shown in FIG.

With such a device, even during the call period, the display 1 displays the call time and the current time in separate areas, so the user can visually check this display to make a call. You can know not only the time but also the current time.

This effect allows you to instantly know the current time, even if the speaker is not wearing a wristwatch or there is no wall clock or table clock nearby.
Extremely useful.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, an independent microprocessor is used for display control, but if a microprocessor is already provided for call control, etc., this microprocessor can be used for display control. May also be used as Further, in the above embodiment, the time information and the call time information are displayed in "hours and minutes", but they may be displayed in "hours, minutes, seconds" or "minutes and seconds". Furthermore, the display area of the display device may be divided vertically, that is, into two lines, in addition to being divided horizontally. Further, in the above embodiment, the time from the time of polarity reversal to the time of end of the call was displayed as call time information, but in the case of a device that does not perform polarity reversal, such as an extension telephone device, for example, when the handset is removed and the call ends, the call time information is displayed. The time from that point to the end of the call may be displayed as call time information. In addition, the circuit configuration of the device,
The form of display, type of display, etc. can also be modified in various ways without departing from the gist of the present invention.

[Effect of idea]

As described in detail above, the present invention provides a visual display device with a first display area and a second display area, and during a line call standby period, the first display area and the second display area are displayed.
Current time information including month and day information is displayed in separate display areas, and part of the current time information is transferred from the second display area and displayed in the first display area during the line call period. In addition, the second
The call time information is displayed in the display area.

Therefore, according to the present invention, even during a call, it is possible to check not only the call duration but also the current time, and it is possible to provide a telephone device with high serviceability.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing the configuration of a conventional telephone device, FIGS. 2 to 4 a and b show an embodiment of the present invention, and FIG. 2 is a circuit block diagram showing the configuration of the telephone device. 3 is a flowchart showing the control procedure of the display control circuit in the device,
FIGS. 4a and 4b are schematic diagrams showing an example of a display state. 2... Display control circuit, 4, 8... Timer circuit (TIM ₁ , TIM ₂ ), 6... Telephone line, 7... Polarity reversal detection circuit (RV), 9... Loop detection circuit (LP), 10 ...Liquid crystal display, 10a...first display area, 10b...second display area, 11...
Changeover switch circuit, 11a, 11b... interlocking contacts, 5a, 5b... display drive circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] A first clock circuit that has the function of displaying time information and call time, measures the current time including month and day information, and outputs the current time information, and a first clock circuit that measures the call time. and a second clock circuit that outputs call time information, the telephone device selectively displaying the current time information and the call time information, the telephone device comprising: a first display area, a second display area; a visual display device having a visual display device, wherein the current time information is dividedly displayed in the first display area and the second display area during a line call standby period, and the current time information is displayed in the first display area during a line call standby period; display switching means for transferring and displaying a part of current time information from a second display area and displaying the call time information in the second display area; polarity reversal detection for detecting polarity reversal of a line; circuit, and display control means for controlling the switching of the display switching means and controlling the start-up of the second timer circuit in response to the polarity reversal detection by the polarity reversal detection circuit, A telephone device characterized by displaying part of current time information.