JPH04345365A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To identify a calling station which transmits the preliminarily known information without providing an additional equipment such as a tone detector. CONSTITUTION:A calling station facsimile equipment is equipped with a changeover switch 11 for switching a CNG in a facsimile standard transmitting operation procedure (CCITT) to a CED or a signal which can be identified from the CNG.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine capable of selecting transmission signals.

0002

2. Description of the Related Art Conventional facsimile machines do not have a function of selecting the recipient of information, accepting some information and rejecting others. All information is accepted, and sometimes unnecessary direct mail is also received, leading to problems such as wasting operating time and preventing necessary reception. If the reception facsimile is a small type that is manually operated, it is necessary to perform the reception operation each time in addition to the operating time, so improvements are desired.

A conventional standard facsimile transmission/reception procedure will be explained with reference to the drawings. Figure 1 shows CCITT T. 3
In the figure, the calling station device detects a dial tone (step 1) and dials a predetermined number (step 2). The time at which a CNG signal (calling tone) is detected, the transmission path, to clearly inform the operator of the called station that it is connected to a facsimile machine, or to a regular telephone subscriber that it has been misconnected. (Step 3). Meanwhile, a call rings at the called station device (step 4), and the operator picks up the receiver and answers the call (step 5). The operator listens to the CNG signal on the handset (step 6) and connects the facsimile machine to the transmission line (step 7). (CED may be sent as an option). After both the calling station and the called station are connected using this operating method, facsimile communication begins.

[0004] The above is the CCITT T. Although the operating method is specified in the 30 Recommendation, there is, for example, Japanese Patent Application Laid-Open No. 62-64164 as a prior art that achieves the same effect as the present invention. The operation in FIG. 3 is performed instead of the operation in FIG. 1 in which the calling station transmits CNG (step 3) and the called station listens to the CNG (step 6). After receiving a call (step 21) [an operation corresponding to responding (step 5) in Figure 1], the called station makes a sound (step 22), the calling station listens to the sound, and in the following operation (step 23) Send a dial pulse or multitone to the called station. The called station identifies the dial pulse or multitone, and if it does not want to receive it, it sends a voice that cannot be received to the calling station (step 2).
4) Hang up the phone (line disconnection). However, although this procedure prevents unnecessary reception, it requires equipment for sending the identification label request and checking the sent dial pulse or multitone, and requires additional steps.

[0005] As another example, there is an example in which a tone detector is provided on the receiving side and is used for the purpose of separating telephone reception. However, this also requires a tone detector on the receiving side, and is not suitable for manually operated facsimile machines where it is desired to eliminate as much extra equipment as possible.

[0006]

[Problems to be Solved by the Invention] Conventional facsimile machines are configured as described above, and simple types either receive all information or are equipped with a tone detector, etc., making the device complex and, in some cases, also required extra operations. The present invention was made to solve the above problems, and does not require complicated additional circuits.
Moreover, the purpose is to make it possible to identify the calling station.

[0007]

[Means for Solving the Problems] A facsimile apparatus according to the present invention is provided with a changeover switch on the calling station side for transmitting the provided CED signal or a signal in place of this in place of the CNG signal.

[0008]

【Example】

Example 1. Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram showing an embodiment of the present invention, and in the figure, 11 is a changeover switch. Normally, it is on the CNG signal generation side, but when transmitting information to a manually operated receiving facsimile, it is switched to an identification signal known to the receiving side in advance.

[0009] In this embodiment, in the standard operating procedure shown in FIG.
It will be sent out. Therefore, is it CNG detection in step 6 on the receiving side? Is it [ ] CED detection? becomes. In the case of CNG transmission, the timing is determined by CCITT T. 30 Recommendation stipulates that a 1100 Hz tone be output for 0.5 seconds on and 3 seconds off. The called station operator uses this tone to recognize that the calling station is a facsimile machine, but in this embodiment CCITT is used instead of CNG.
T. The automatically operated called station specified in the 30 Recommendation sends out a CED signal to be output as the called station identification. C.E.D.
The signal is CCITT T. Since the 30 Recommendation stipulates that the 2100 Hz tone be transmitted for 2.6 seconds or more and 4.0 seconds or less, the operator of the called station can clearly recognize the tone as different from CNG. Therefore, by agreeing on the operation of the present invention between the calling station and the called station in advance, the operator of the called station can identify the calling station even if it is a manually operated terminal that is not equipped with a special receiving additional circuit. becomes.

Example 2. Note that although the above embodiment shows an example in which CED is sent out instead of CNG, the same effect can be achieved by changing the interval between the ON time and OFF time of CNG.

[0011]

[Effects of the Invention] As described above, according to the present invention, by simply adding a few switching circuits to the standard circuit provided in a facsimile machine, a facsimile terminal whose operation is known in advance can be This has the effect of making it possible to selectively receive information.

[Brief explanation of drawings]

FIG. 1 is a flow diagram of standard facsimile transmission and reception procedures based on international conventions.

FIG. 2 is a circuit configuration diagram showing an embodiment of the present invention.

FIG. 3 is a flow diagram of a conventional identification procedure for information selection.

[Explanation of symbols]

11 Changeover switch

Claims (1)

[Claims] Claim 1: A called station identification signal (CED signal) or CN signal is installed in the calling station facsimile device in place of the calling tone (CNG signal) in the facsimile standard transmission operation procedure.
A facsimile machine equipped with a changeover switch for sending a signal that can be identified as a G signal.