JPH0556114A - Telephone call device - Google Patents

Abstract

PURPOSE:To set arbitrary sound and voice at arbitrary time to be telephone call sound by recording calling sound in a semiconductor memory which can be rewritten and reproducing calling sound recorded in a storage device in synchronizing with calling sound transmitted from an exchange. CONSTITUTION:When a calling signal arrives a telephone circuit 8, a synchronous signal is outputted from a synchronous circuit 7 in synchronizing with the transmission start of the calling signal, the reading of head sound data in the semiconductor memory 1 is started and the reading of sound data in the semiconductor memory 1 is also completed. The time (length) of sound reproduced at that time is set to be recorded arbitrary time (within three seconds). At the time of generating telephone call sound longer than one cycle of the call signal from the exchange, a function detecting the pronunciation of the call sound is provided on the synchronous circuit 7 and the synchronous signal is prevented from being sent during pronunciation. The time (length) of sound to be reproduced becomes arbitrary time (>= three seconds).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calling device added to a telephone, and more particularly to a telephone calling device which generates a ringing tone in synchronization with a calling signal from an exchange.

[0002]

2. Description of the Related Art A conventional telephone calling device uses a bell which uses a calling signal (a signal of 16 Hz which is repeatedly sent for 1 second and interrupted for 2 seconds) supplied from an exchange. However, it is difficult to distinguish which telephone bell is ringing when using a plurality of telephones at the same place. Therefore, along with the development of electronic telephones, a telephone capable of selecting a plurality of ringing tones has been developed, and the telephone can be identified to some extent.

[0003]

However, a plurality of ring tones of such a telephone are distinguished by changing the pitch of the tone, and the tones are of the same quality, which cannot be said to be easy to identify. It was Moreover, the number of switching is at most several, and it cannot be said that the number of switching is insufficient when many telephones are used at the same time.

Further, the length of the telephone ringing tone is shorter than the transmission period of the ringing signal transmitted from the telephone exchange, and it has been difficult to transmit information using the ringing tone.

An object of the present invention is to solve the above problems and provide a telephone calling device in which a number of easily distinguishable ringing tones can be set.

[0006]

In order to achieve this object, the present invention comprises a recording / reproducing device for recording / reproducing a ringing tone and a synchronizing circuit for synchronizing with a calling signal from a telephone line. Thus, the ringing tone is reproduced from the recording / reproducing apparatus.

[0007]

According to the present invention, an arbitrary sound is externally recorded in the recording / reproducing apparatus, and the recorded sound is reproduced in synchronization with the ringing signal sent from the exchange to generate the ringing sound. By making a sound to be recorded from the outside by, for example, a voice and making it different for each telephone, it is possible to make the ringing sound easy to identify. Therefore, even in a place where a large number of telephones are used at the same time, it becomes easy to identify the telephone that is calling.

[0008]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is a block diagram of a telephone calling device of the embodiment. Reference numeral 1 denotes a rewritable semiconductor memory for recording voice data, in which a telephone ringing tone (simple tone, musical sound, voice, etc.) is recorded as data. Reference numeral 2 is an input amplifier for amplifying an external input audio signal to be recorded in the semiconductor memory 1. Reference numeral 3 is for converting an output signal of the input amplifier 2 from an analog signal into a digital signal of a predetermined number of bits A.
It is a / D converter. Reference numeral 4 is a D / for converting the audio data read from the semiconductor memory 1 into an analog signal.
An A converter, 5 is an output amplifier for amplifying a sound signal output from the D / A converter 4, and 6 is a speaker for reproducing sound. Reference numeral 7 denotes a synchronizing circuit, which reads voice data from the semiconductor memory 1 in synchronization with a call signal (a 16 Hz signal that is normally sent for 1 second and repeatedly interrupted for 2 seconds as described above) input from the telephone line 8. Is to start. Here, of the configurations described above, the synchronization circuit 7
Other parts (parts denoted by reference numerals 1 to 6) other than the part of the telephone line 8 constitute a recording / reproducing device. It should be noted that the CPU and the like are naturally also constituent elements, but they are omitted here as only essential parts.

When a calling signal arrives at the telephone line 8, a synchronizing signal is output from the synchronizing circuit 7 in synchronization with the start of sending the calling signal, and the reading of the head of the voice data in the semiconductor memory 1 is started. Before the completion of one cycle (3 seconds) of the calling signal, the reading of the audio data from the semiconductor memory 1 is also completed. The time (length) of the voice reproduced at this time is an arbitrary time (within 3 seconds) recorded.

On the other hand, when a telephone ringing tone longer than one cycle of the ringing signal from the exchange is generated, the synchronizing circuit 7 is provided with a function of detecting whether or not the ringing tone is generated, and the synchronizing circuit 7 synchronizes during the tone generation. Avoid sending signals. At this time as well, the time (length) of the reproduced sound is any recorded time (3 seconds or more).

In this embodiment, a semiconductor memory 1 having a large capacity is used to record a plurality of different types of calling sounds, and an arbitrary one of them can be selected as a calling sound. It is possible. Further, in addition to the rewritable semiconductor memory 1 as described above, it is possible to generate a ready-made ringing tone by adding a non-rewritable semiconductor memory in which a ringing tone is recorded in advance.

Although such a telephone calling device can be constructed by using individual parts, it is preferable to construct it by one or a plurality of integrated circuits from the viewpoint of miniaturization.

This telephone calling device can be attached to the telephone line as a device independent of the telephone, or can be incorporated in the telephone and used in place of the conventional ringing tone generator (bell, etc.). In particular, in a telephone having a function capable of responding to an absence, it is possible to share a signal from the telephone line with a device other than the synchronizing circuit 7 (that is, a recording / reproducing portion, particularly an A / D, D / A converting portion). Therefore, this device can be realized at extremely low cost.

[0014]

As described above, according to the present invention, any voice can be used as a telephone ringing tone, and even when a plurality of telephones are used at the same place, the telephone receiving the call can be easily handled. There is an advantage that it can be specified. Further, since the calling sound for a longer time (3 seconds or more) than the calling signal can be generated, it is possible to generate a sound having a specific meaning (information) in addition to the musical sound.

[Brief description of drawings]

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

[Explanation of symbols]

1: rewritable semiconductor memory, 2: input amplifier,
3: A / D converter, 4: D / A converter, 5: output amplifier, 6: speaker, 7: synchronous circuit, 8: telephone line.

Claims (2)

[Claims] 1. A recording / reproducing device for recording / reproducing a ringing tone, and a synchronizing circuit for synchronizing with a ringing signal from a telephone line. The synchronizing circuit reproduces the ringing tone from the recording / reproducing device. And a telephone calling device. 2. The telephone calling device according to claim 1, wherein a reproduction time of the ringing tone is longer than a cycle of the calling signal.