JPH0243390B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone device having a redial function.

[Conventional technology]

Telephone devices such as functional telephones and pushbutton telephones are generally equipped with a redial function that sequentially updates the dialed number that was dialed just before and automatically re-dials the same dialed number in response to the operation of a specific key. Since the last dialed number is always stored in the redial memory, there is a risk that the dialed number that you do not want a third party to know can be easily detected.

As a countermeasure against this, for example, as disclosed in Japanese Patent Publication No. 60-247356, a method has been proposed in which a special prohibition key is provided and re-dialing by redialing is prohibited by operating the key.

[Problem that the invention seeks to solve]

However, if a special prohibition key or switch is provided, the number of parts required will increase, the cost will increase, and the space required for the operation surface will increase, resulting in an increase in size.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention is constructed by the following means.

In other words, we focused on the fact that modern telephone devices generally have an on-hook dialing function that allows dialing while in an on-hook state, and we assume that the telephone device has both this function and a redial function. a dialing mode determining means for determining between an on-hook dial mode and a normal off-hook dialing mode based on the above, and a dial key operation only in accordance with one of the modes based on the determination result of the calling mode determining means. A write control means is provided for updating and storing the dial number according to the redial memory in the redial memory.

[Function] Therefore, for example, when dialing is made in off-hook dialing mode, this dialed number is updated and stored in the redial memory, and a re-dialing is performed based on the contents, whereas on-hook dialing When a call is made by dialing in dial mode, the dialed number is not stored and confidentiality of the dialed number is maintained.

〔Example〕

Hereinafter, details of the present invention will be explained with reference to figures showing examples.

FIG. 1 is a block diagram of a functional telephone, in which a line terminal 2 to which a telephone line (hereinafter referred to as line) 1 is connected is shown.
The switch HS ¹ and relay SP contact sp
Communication circuit (hereinafter referred to as TKC) 3 via a parallel circuit with
is connected, and a dial signal sending circuit (hereinafter referred to as DSS) 4 and a monitor speaker circuit (hereinafter referred to as SPC) 5 are connected in parallel, and when an off-hook is performed, TKC3 is connected to line 1. As a result, the DC loop is closed and the line 1 is captured, so that the DSS 4 can freely send a dial signal, and in response to a response from the other party, a call is made using the handset 6. .

In addition, a processor (hereinafter referred to as CPU) 7 such as a microprocessor is provided, and this is equipped with a fixed memory (hereinafter referred to as ROM) 8 and a variable memory (hereinafter referred to as RAM) 9, as well as a dial key (hereinafter referred to as RAM). DK) 10, a redial key (RDK) 11 used as a specific key, a speaker key (SPK) 12, and a switch HS ² are provided, and the CPU 7 is activated according to these outputs. Execute the instructions in ROM8,
Control decisions are made while accessing predetermined data to the RAM 8, and control of the dial signal generation circuit (hereinafter referred to as DSG) 13, SPC 5, and relay SP,
It also controls lighting of the speaker indicator light (hereinafter referred to as SPL) 14 when the SPC 5 is in an operating state.

Therefore, after performing off-hook, DK1
If you operate 0, CPU7 will switch to DSG1 accordingly.
3, a dial signal in the form of a composite audio frequency signal or a pulse signal is sent via the DSS 4, and manual dialing is performed in off-hook dial mode. CPU depending on
7 reads the stored dial number from the redial memory in RAM 9, which is updated sequentially according to the manual dial call, and based on this, DSG1
3, and redial calls are made in off-hook dial mode.

On the other hand, SPK1 without off-hook
If you operate 2, CPU 7 will relay accordingly.
In order to drive the SP, put the SPC 5 into the operating state, and turn on the SPL 14, a DC loop is closed via the contact sp, enabling on-hook monitoring by the speaker 15, and setting the on-hook dial mode. Manual dialing using the DK 10 is performed in the same manner as described above.

However, in this case, the dial number for manual dialing is not stored in the redial memory.
When the RDK 11 is operated, dialing is performed using the dial number used when manually dialing in the off-hook dialing mode.

Figure 2 is a flowchart of the control situation by the CPU 7, and "SPK operation?" 101 is N (NO).
If so, the "Off-hook?" step 102 is determined according to the output of the foot switch HS ² , whereas if step 101 is Y (YES), the "On-hook dial mode setting" 102 sets the on-hook dial mode flag. is set, and
The relay SP is driven, the operating state of the SPC 5 is set, and the SPL 14 is turned on.

Next, "DK operation?" 111 is checked, and if this is N, "RDK operation?" 112 is checked.
becomes Y, redial memory “RDM
121. Then, based on this, the ``redial call processing'' 122 is performed.
On the other hand, if step 111 is Y, "On-hook dial mode?" 131 is determined corresponding to step 103, and when this is Y, only "manual dialing process" 132 is performed, while step 131 is When is N, it is off-hook dialing mode, and "manual dialing process/
Dial outgoing and redial memory RDM according to DK10 by "Update memory to RDM" 133
Update storage is performed for each digit of the dial number.

Next, if the other party responds in accordance with any of steps 122, 132, and 133, the on-hook monitoring state is switched to an off-hook call through "call processing" 141, and then the on-hook call is switched off by ending the call. do or do again
When the SPK 12 is operated and "Call ended?" 142 becomes Y, each part is restored to the initial state by "Recovery processing" 143.

Therefore, if you perform off-hook without operating SPK12, it will become off-hook dial mode,
In response to the operation of the DK 10, step 111 becomes Y and step 131 becomes N, and the dial number is updated and stored in the redial memory RDM along with manual dialing, and redialing using the same dial number is performed by operating the RDK 11.

On the other hand, if you operate SPK12 before off-hook, it will become on-hook dial mode, and DK
10 steps 11 and 131
becomes Y, only manual dialing is performed, the redial memory RDM does not memorize it, and the dial number in off-hook dial mode is retained as it is, so RDK11
Even if you operate , a redial call will be made to the destination you dialed in off-hook dial mode, and a third party will not be able to detect the dialed number you dialed in on-hook dial mode.

FIG. 3 is a functional block diagram that realizes the above operation, and the CPU 7 includes a switch input detection means (hereinafter referred to as HSD) 31, a speaker key input detection means (hereinafter referred to as SKD) 32, a redial key input Reading control means (hereinafter referred to as "MCC") forming detection means (hereinafter referred to as "RKD") 33, dial key input detection means (hereinafter referred to as "DKD") 34, transmission mode determination means (hereinafter referred to as DMJ) 35, and memory control means (hereinafter referred to as MCC) 36. MRC) 36a, write control means (hereinafter referred to as MWC) 36b, and dial drive means (hereinafter referred to as DDR) 37 are configured, and turn on the hook switch HS ² by off-hook or operate the SPK 12 on the HSD 31 or SKD.
32 is detected, the DMJ 35 determines the off-hook dial mode according to the detection output of the HSD 31, and similarly determines the on-hook dial mode for the detection output of the SKD 32, and sends this determination result to the MCC 36. , sends a control signal SC to each part that requires it.

Next, if you operate DK10, this will become DKD3.
4, and according to this detection output
The DDR37 drives the DSG13 and performs manual dialing, as well as the detection output and
In response to the signal indicating the determination result from DMJ35, if it is in off-hook dial mode, MWC36b
causes the redial memory RDM to perform update storage, thereby storing the dialed number.

However, if you are in on-foot dial mode,
MWC36b does not respond, redial memory
Update storage using RDM is not performed.

Also, if you operate RDK11, this will be RKD3
Detected by MRC36 according to the detection output.
a reads the redial memory RDM,
In order to send this to the DDR 37, the DDR 37 drives the DSG 13 in accordance with this and performs a redial call.

FIG. 4 is a main part flowchart similar to FIG. 2 showing another embodiment, and in FIG. 4, "On-hook dial mode?"
13 is added, the same judgment as step 131 is made, and only when the result is N, the process moves to steps 121 and subsequent steps, and redialing is permitted.
If step 113 is Y, steps 111 and subsequent steps are repeated to prohibit redialing.

In this case, DMJ35 in Figure 3
The dotted line between and MRC36a is a solid line, and RDK1
When 1 is operated, the detection output of RDK33 and
In response to the signal indicating the judgment result from DMJ35,
MRC36a in on-hook dial mode
It is sufficient if the caller does not respond and does not make a redial call.

Therefore, when making a dial call using the on-hook dial mode, the dial number is not stored in the redial memory, the dial number is kept confidential, there is no need to provide a prohibition key, etc., and the configuration is simple and inexpensive. can be achieved.

Although a dedicated RDK11 is provided as a specific key, the "#" key on the DK10 or its repeated operation may also be used. The same is true if only the data is stored, and update storage may be performed in accordance with one of the two modes, and storage may not be performed in accordance with the other mode.

Also, if you want to erase the redial memory, in any mode, press DK for a certain period of time.
The redial memory may be cleared when the operation No. 10 is not performed, or under specific timing conditions such as a call termination operation or the next call origination operation.

In addition, an integrated circuit for a dial circuit having a redial memory may be used without providing a redial memory in the RAM 9. In an integrated circuit having a speed dial memory, this memory may be used in the same way; In addition to using SPK12, the dial mode can be set by selecting a method according to the conditions, and can be modified in various ways, such as being applicable not only to function telephones but also to various telephone devices such as key telephone devices. .

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, leakage of the confidentiality of the destination dial number by the dial number in the redial memory is prevented without particularly providing new keys, switches, etc. There is no increase in the required space, and the invention can be manufactured inexpensively and compactly, providing remarkable effects in various telephone devices.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, Fig. 1 is a block diagram, Fig. 2 is a flowchart of the control situation, Fig. 3 is a functional block diagram, and Fig. 4 is a main part flowchart showing another embodiment. It is. 1...Line (telephone line), 3...TKC (telephone circuit), 4...DSS (dial signal sending circuit), 5...
...SPC (speaker circuit), 7...CPU (processor), 8...ROM (fixed memory), 9...RAM
(variable memory), 10...DK (dial key), 1
1...RDK (redial key), 12...SPK (speaker key), 13...DSG (dial signal generation circuit), 31...HSD (foot switch input detection means), 32...SKD (speaker key input detection means) , 33...RKD (redial key input detection means), 34...DKD (dial key input detection means), 35...DMJ (call mode determination means), 36
b...MWC (write control means), 37...DDR
(dial driving means), RDM...redial memory.

Claims (1)

[Claims] 1. Equipped with an on-hook dialing function that performs dialing depending on the on-hook state, and re-dialing operation based on the latest dial number that is sequentially updated and stored by a single redial memory in response to a specific key operation of the telephone line capture degree. The telephone device includes a calling mode determining means for determining between an on-hook dialing mode based on the on-hook dialing function and a normal off-hook dialing mode, and a dialing mode determining means for determining between an on-hook dialing mode based on the on-hook dialing function and a normal off-hook dialing mode, and a dialing mode determining means for determining which of the above-mentioned modes based on the determination result of the calling mode determining means. 1. A redial telephone device, comprising write control means for updating and storing a dial number according to an operation of a dial key in the redial memory only in response to either one of the dial keys.