JPH06291848A - Lamp on/off system for digital multi-function telephone set - Google Patents

Abstract

PURPOSE:To shorten execution processing time by ANDing prescribed data read from a lamp pattern table and a bit location exchange table storage part and turning on/off of a lamp according to the result. CONSTITUTION:An MPU 20 extracts the data of the contents of the lamp pattern table within a lamp pattern table storage part 21 or the extraction painter and stores it in a memory 22. The MPU extracts the data showing a lamp pattern NO from a bit location conversion table storage part 23 and stores it in an accumulator 24. The contents stored in the accumulator 24 and the memory 22 is ANDed every bit, and the result is stored in the accumulator 24. Next, the contents of the accumulator 24 is checked, and a lamp 11 is turned off if the check is '0' and the lamp 11 is turned on if it is not '0'. As a result, the on/off instruction of the lamp 11 corresponding to the pattern NO can be obtained by a comparison arithmetic operation and a high speed processing can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp on / off system for a digital multifunction telephone. In addition to the general telephone function (call by handset) connected to a digital exchange, a hands-free function that allows you to talk without holding the handset,
2. Description of the Related Art Dedicated digital multi-function telephones having a function of making a one-touch dial by registering the other party's number, a lamp display function of displaying an incoming call, and a liquid crystal display function of displaying a destination etc. have come to be used. In recent years, the number of dedicated digital multi-function telephones manufactured has been increasing due to the increase in the capacity of digital exchanges. Therefore, it is required to reduce the hardware cost by reducing the memory capacity of the program and shortening the execution processing time.

[0002]

2. Description of the Related Art FIG. 6 is a conceptual diagram of the configuration of a conventional system. In the figure, 1 is a digital exchange and 10 is a line 2.
It is a digital multi-function telephone connected to the digital exchange 1 via the. In the digital multi-function telephone 10, 11 is a lamp for displaying the state of the telephone, and 20 is a microprocessor (MPU) for controlling the overall operation. As the lamp 11, for example, an LED is used, and M
The PU 20 controls its on / off. Reference numeral 21 is a lamp pattern table storage unit that stores a lamp pattern table, and 22 is a memory that temporarily holds data.

In the system thus constructed,
If the incoming call is on the digital multi-function telephone 10, MP
U20 receives the lamp control instruction data (lamp pattern NO) for displaying the incoming call pattern from the digital exchange 1, and controls the lamp 11 to display the incoming call. Here, there are several types of lamp pattern NO, including the display of incoming calls.

FIG. 7 shows a lamp pattern table storage unit 21.
It is a figure which shows the structural example of the lamp pattern table memorize | stored in FIG. In the figure, the data is from MSB to LSB 8
It has a bit structure and addresses XX0 to XXB, respectively.
It is adapted to be accessed by (lamp pattern table extraction pointer) (X indicates arbitrary). And
"1" corresponds to lamp on, and "0" corresponds to lamp off.

FIG. 8 is an explanatory view of the reading direction of the lamp pattern. Fold down the pattern table shown in FIG.
Reading is performed in the horizontal direction as shown in the figure. As a result, the lamp display pattern is as shown on the right side of the figure. For example, for the lamp pattern NO "0", the lamp is always off with all "0". Lamp pattern NO
For "1", the lamp is always on with all "1". For the lamp pattern NO "2", the lamp is alternately turned on and off repeatedly in a fast cycle. The same applies hereinafter.

FIG. 9 is a flowchart showing a conventional lamp lighting method. The MPU 20 extracts the data of the address indicated by the contents of the lamp pattern table extraction pointer (which is updated periodically) and stores it in the memory 22 (S
1). As the data to be extracted, for example, as shown in the example of FIG. 7, when the ramp pattern table extraction pointer is 2, the data is 11010110 (binary number; the same applies hereinafter).

Next, the MPU 20 determines the lamp pattern NO.
It is checked whether is "0" (S2). "0"
If not, a sequence S3 for checking whether the lamp pattern NO is "1" is entered. If the pattern pattern NO is not the corresponding pattern NO, the lamp pattern N is finally checked.
Go to the sequence to check if O is "6".

On the other hand, in step S2, the pattern N
If O is "0", it is checked whether the bit "0" of the data held in the memory 22 is "0" (S9). In the case of "0", the lamp 11 is turned off, and in the case of "1", the lamp 12 is turned on and the process ends. If the pattern NO is not "0", the process goes to the step of checking whether the lamp NO of step S8 is "6" as described above.

In the meantime, if the answer is NO, the same processing (lamp on / off processing) as shown in steps S9 to S11 is performed. In step S8, if the lamp NO is not "6", only the remaining lamp NO "7" remains. Then, it is checked whether the content of bit 7 of the memory 22 is "0" (S20). If it is “0”, the lamp 11
Is turned off, and if it is "1", the lamp 11 is turned on. By repeating such a lamp lighting process a predetermined number of times, a specific pattern as shown in FIG. 8 can be displayed.

[0010]

In the above-described conventional system, the content of each lamp pattern NO is determined and the lamp ON / OFF control is performed for each content. Therefore, as the number of types of lamp pattern NO increases. However, there is a problem that the program memory capacity increases. Further, there is a problem that the execution processing time increases as the lamp pattern NO increases.

The present invention has been made in view of the above problems, and a lamp on / off of a digital multi-function telephone capable of shortening the execution processing time of the on / off control of the lamp without increasing the program memory capacity. The purpose is to provide a system.

[0012]

FIG. 1 is a block diagram showing the principle of the present invention. The same parts as those in FIG. 6 are designated by the same reference numerals. The system shown in the figure is a system in which a digital exchange 1 and a digital multi-function telephone 10 are connected, and a lamp 11 provided on the digital multi-function telephone 10 is display-controlled (on / off control) by a lamp pattern NO signal from the exchange 1. The lamp on / off system of the digital multi-function telephone is configured as described above.

Reference numeral 20 is an MPU provided in the digital multi-function telephone 10 for performing overall control operation, 21 is a lamp pattern table storage unit for storing a lamp pattern table, and 23 is bit data corresponding to the lamp pattern NO. 3 is a bit position conversion table storage unit that stores a bit position conversion table. Lamp pattern table storage unit 21 and bit position conversion table storage unit 23
Are provided in the MPU 20.

[0014]

The MPU 20 is the lamp NO from the exchange 1.
When the signal is received, a logical product operation of the ramp pattern data read from the ramp pattern table storage unit 21 and the bit position conversion data read from the bit position conversion table storage unit 23 is performed, and on / off control of the lamp is performed according to the result. To do. With such a configuration, the execution processing time of the lamp on / off control can be shortened without increasing the program memory capacity.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 2 is a configuration block diagram showing an embodiment of the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals. In the figure, 11 is a lamp for displaying the operating state of the multi-function telephone 10, 12 is a liquid crystal display for displaying various information, 13 is a ringer IC for outputting a ringer, 14 is a handset, a speaker and a microphone (not shown). Connected,
It is a call circuit for controlling a call.

Reference numeral 15 is a codec for performing mutual conversion between an analog signal and a digital signal, 16 is a line terminating device (CT) connected to the line 2, 17 is a transmission terminating device (LT) connected to the exchange side, and 18 is The hook switch 19 is a key composed of a numeric keypad and the like.

In the MPU 20, reference numeral 21 is a lamp pattern table storage unit for storing a lamp pattern table. The structure of the lamp pattern table stored in the lamp pattern table 21 is the same as that of the conventional example shown in FIG. Reference numeral 22 is a memory used for temporarily storing data, 23 is a bit position conversion table storage unit for storing a bit position conversion table, and 24 is an accumulator (AC).
C).

FIG. 3 shows the bit position conversion table storage unit 23.
It is a figure which shows the structural example of the bit position conversion table memorize | stored in FIG. The data is composed of 8 bits, and 8 types of data are stored corresponding to the lamp patterns NO0 to 7. A feature of this bit position conversion table data is that each data is "1" for a specific one bit and all other bits are "0" as shown in the figure. For example, in the case of the lamp pattern NO6, the data is 01000000, and the 7th bit is "1". The operation of the system thus configured will be described with reference to the flowchart of FIG.
It is as follows.

First, the MPU 20 extracts the data of the address indicated by the contents of the lamp pattern table extraction pointer from the lamp pattern table in the lamp pattern table storage unit 21 and stores it in the memory 22 (S1). For example,
If the lamp pattern table extraction pointer is 2, the data 11010110 at the address indicated by the pointer 2 in FIG. 7 is extracted and stored in the memory 22.

Next, the MPU 20 extracts the data of the address indicated by the ramp pattern NO from the bit position conversion table storage unit 23 and stores it in the accumulator 24 (S).
2). For example, if the lamp pattern NO is 6, the extracted data will be 01000000 from FIG.

Next, the MPU 20 has an accumulator 24.
The bit-wise logical product of the contents stored in the memory 22 and the contents stored in the memory 22 is stored, and the result is stored in the accumulator 24 (S3). FIG. 5 is a diagram showing a state of a logical product operation. Contents of the memory 22 11010110
And the content 01000000 of the accumulator 24 are bitwise ANDed. As a result, the logical product becomes "1" only when both bits are "1", and the other becomes "0". As a result, the obtained calculation result is 01,000,000 as shown in the figure.

Next, the MPU 20 checks whether the content of the accumulator 24 is "0" (S4). If so, the lamp 11 is turned off (S
5). When the content of the accumulator 24 is not "0", the lamp 11 is turned on (S6). In this way, the on / off control (display control) of the lamp 11 is performed.
As described above, according to the present invention, since the ON / OFF instruction of the lamp 11 corresponding to the lamp pattern NO can be obtained by one comparison calculation operation, the processing speed becomes high. Further, it is not necessary to increase the program memory capacity. By repeating such an operation a predetermined number of times, a lamp display sequence as shown in FIG. 8 is obtained.

In the above embodiment, the case where the number of bits of data is 8 bits is taken as an example, but the present invention is not limited to this, and data of any number of bits can be used. As the number of display modes of the lamp pattern table increases, the advantage of speeding up the processing, which is a feature of the present invention, comes out.

[0024]

As described above in detail, according to the present invention, there is provided a lamp on / off system for a digital multi-function telephone capable of shortening the execution processing time of the lamp on / off control without increasing the program memory capacity. It can be provided and has a great practical effect.

[Brief description of drawings]

FIG. 1 is a principle block diagram of the present invention.

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

FIG. 3 is a diagram showing a configuration example of a bit position conversion table.

FIG. 4 is a flowchart showing the operation of the present invention.

FIG. 5 is a diagram showing how an AND operation is performed.

FIG. 6 is a conceptual diagram of a configuration of a conventional system.

FIG. 7 is a diagram showing a configuration example of a lamp pattern table.

FIG. 8 is an explanatory diagram of a lamp pattern reading direction.

FIG. 9 is a flowchart showing a conventional lamp lighting method.

[Explanation of symbols]

 1 Digital Switch 10 Digital Multifunctional Telephone 11 Lamp 20 MPU 21 Lamp Pattern Table Storage 23 Bit Position Conversion Table Storage

Claims (3)

[Claims] 1. A system in which a digital exchange (1) and a digital multifunction telephone (10) are connected, and a lamp (11) provided in the digital multifunction telephone (10).
In a lamp on / off system for a digital multi-function telephone, the display of which is controlled by a lamp pattern NO signal from the digital exchange (1), an MPU (20) for performing the entire control operation in the digital multi-function telephone (10). And a lamp pattern table storage unit (21) for storing the lamp pattern table, and a bit position conversion table storage unit (23) for storing a bit position conversion table in which bit data corresponding to the lamp pattern NO is stored. A lamp on / off system for a digital multi-function telephone characterized by the above. 2. When the MPU (20) receives a lamp pattern NO signal from the digital exchange (1), the lamp pattern data read from the lamp pattern table storage unit (21) and a bit position conversion table storage unit (21). 23. The lamp of a digital multi-function telephone according to claim 1, wherein a logical product operation is performed with the bit position conversion data read from 23), and ON / OFF control of the lamp is performed according to the result. On-off system. 3. The MPU (20) is provided with a memory (22) for temporarily storing data and an accumulator (24) to indicate the contents of a lamp pattern table extraction pointer from a lamp pattern table storage unit (21). The address data is extracted and stored in the memory (22), and then the address data indicated by the content of the ramp pattern NO is extracted from the bit position conversion table storage unit (23) and stored in the accumulator (24). The bit-wise logical product of the contents of the memory (22) and the contents of the accumulator (24) is stored, and the result is stored in the accumulator (24). When the accumulator (24) is "0", the lamp is turned off,
3. The lamp on / off system for a digital multi-function telephone according to claim 2, wherein the lamp on / off system is controlled when the accumulator (24) is not "0".