JPS5927665A - Facsimile device - Google Patents

Abstract

PURPOSE:To attain ease of the detection of a failure on the spot and a shipping inspection at manufacturing by incorporating the function of adjustment and the test to the titled device in advance, and switching the function with the conventional facsimile communication function with a simple operation. CONSTITUTION:An operating panel for adjustment and test is provided at the back side of the device in addition to an operation panel for facsimile communication. At the adjustment and test, a telephone set hooks on with the operation of a telephone key 4 on the panel 1 to close the test switch so as to attain the adjustment and test state. In the state of the adjustment and test, the transmitting and receiving state of the test signals including various tonal signals and 3-minute and 6-minute mode phase signals is repeated alternately under the preset test condition and an operating display lamp (transmission display lamp 8 and receiving display lamp 9 and the like) is lighted or turned off in response to the transmission/interruption and receiving state of each signal.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facsimile apparatus, and more particularly, to a facsimile apparatus having an operation test function for a modulation/demodulation circuit, that is, a so-called modem, which is essential for facsimile communication.

Conventionally, when manufacturing facsimile machines at a factory, TFI4 settings and operation checks are carried out in the same way as other general equipment, and the modulation and demodulation circuits essential to this facsimile machine are tested.
That is, so-called modems were also adjusted and checked for operation at the time of manufacture. Specifically, the adjustment of the sending level of the output signal of the modem circuit and the automatic gain control (AGC) during the reception operation of the modem circuit are performed.
) circuit gain adjustment, etc. Therefore, in order to adjust such a modem circuit, a test function is added to the modem circuit by replacing the read-on memory with a dedicated program written therein with a control circuit board exclusively for adjustment, which is pre-installed. In response to switch operations on the operation panel, signals used for facsimile communication were sent or received.

However, when using the method of adjusting the modem circuit and checking its operation, it is necessary to use a large number of control circuit boards dedicated for adjustment tests for models that are produced in large numbers (ffl). Furthermore, when the service provider tests the modem circuit at the location where the facsimile machine is installed and used, it is necessary to carry a dedicated control circuit board. Furthermore, in order to check for deviations in the transmitted image, a test chart for image inspection was sent electronically, but even in such cases, it is difficult to check the function of the modem circuit itself. There was a drawback.

An object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to operate the switches provided on the operation panel as necessary.
By making it possible to utilize the modem test function, and by making the switch on the operation panel have a different effect during actual facsimile communication than during the adjustment test,
To provide a facsimile device which generates a signal used for facsimile communication from a modem circuit, puts the modem circuit into a receiving state, and is further useful for maintenance services at the place of use.

The present invention will be described in detail below with reference to the drawings.

First, FIG. 1 shows an example of the configuration and arrangement of the operation panel in the facsimile machine of the present invention. In the illustrated configuration, during normal facsimile communication, - Operation panel l
By repeatedly pressing the upper mode key 3, the mode display lamp 6 is lit, and the transmission indicator g1, the reception indicator 9, and the copy indicator 10 are sequentially lit depending on the presence or absence of a document to be transmitted. The device can be activated by sequentially switching between the operating states of transmission, reception, and copying of transmitted and received originals, and by pressing the telephone key to light up the telephone display lamp and switching the telephone to the 7-tsuku-7 and hook-on states. After setting the operating conditions, each operation is started by pressing the start key, and the operation is stopped by pressing the stop key 3.

In addition to the above-mentioned operation panel for facsimile communication, the facsimile apparatus of the present invention is provided with an operation panel for use in adjustment tests at a location that is not normally touched by the operator, such as the back of the main body of the apparatus. The modem circuit adjustment test function of the device of the present invention is activated by closing a test switch provided on the test operation panel.

Next, an example of the modem circuit adjustment test process carried out by operating each adjustment key on the two adjustment test operation panels in the facsimile apparatus of the present invention is shown in the form of a schematic flowchart in FIG.

That is, during an adjustment test of the device of the present invention, the telephone (not shown) is put into the hook-on state by operating the telephone key bar on the facsimile communication operation panel l shown in FIG. When the test switch 1 is closed to enter the adjustment test state, and the start key on the operation panel l shown in the first figure is pressed, the adjustment test process shown in the first figure is started. After entering the adjustment test process in this way, you can alternately switch between the operation spring shown in the figure and the stop and receive states based on the test conditions set in advance by operating the keys on the rear operation panel. can. At this time, the operation indicator lamps shown in parentheses in the chart 70 in FIG. 1 are turned on and off, respectively, corresponding to the sending, stopping, and receiving states of each test signal.

Next, an example of the process of transmitting a test image signal during an adjustment test of the facsimile apparatus of the present invention is shown in the form of a schematic flowchart in FIG. In other words, when transmitting a test image signal, close the test switch on the rear operation panel by operating the same key as described above with reference to FIG. When the user presses the telephone button on the operation panel l and presses the start key while the telephone is in the hook-off state, the test image signal sending process shown in FIG. 3 is started. At that time, if the reception key on the facsimile machine of the other party is pressed, follow the pre-communication procedure for 3-minute mode or 4-minute mode depending on the setting of mode key 3 on the operation panel l shown in Figure 1. A test pattern is transmitted. If the operation panel/upper mode key 3 shown in the first figure is pressed while transmitting the test pattern, the image content P of the transmission pattern can be transmitted while being sequentially changed in the order shown in the third figure. If the test manuscript is extracted after such test pattern transmission process, after normal post-communication procedures,
This will end the facsimile transmission.

Note that the test pattern transmitted during the adjustment test is a vertical striped image, and it is possible to easily and reliably detect image disturbances due to malfunction of the modem circuit. In addition, the test pattern itself to be transmitted shall be used primarily for testing purposes to facilitate the detection of such image holes, but the pre-communication and post-communication procedures shall be carried out in exactly the same way as in actual facsimile communication. It is also possible to display the progress of such pre- and post-communication procedures using a combination of display lamps. Specifically, when performing pre- and post-communication procedures, the transmitted signal and received signal are displayed as a code by a combination of flashing display lamps, and in that case, whether or not a test manuscript is inserted is displayed as a code. The procedure before and after communication will be displayed while operating the transmitter by switching the letter of transmittal and reception status accordingly.

In the facsimile machine of the present invention, by providing the adjustment test ItQ function as described above, it is possible to determine at a glance the progress status of the signal processing process by the modem circuit and the control circuit, and it is possible to check for failures at the place where the device is used. Of course, it can also be effectively utilized for shipping inspections during -1 manufacturing.

As is clear from the above explanation, according to the present invention, the adjustment test function can be pre-built into the 7Axim') device and can be switched to the normal facsimile communication function with a simple key operation. It can be extremely effectively utilized for modem circuit adjustment tests at equipment manufacturing plants and for failure inspections at the location where the equipment is used.

[Brief explanation of the drawing]

FIG. 1 is a top view showing an example of the configuration and arrangement of the operation panel in the facsimile apparatus of the present invention, and FIGS. 2 and 3 are flowcharts schematically showing example P of the adjustment test process. /...Operation panel, K...Start key, 3...Mode key, Da...Telephone key, ! ...Stop key, 6...Mode indicator lamp, 7...Telephone indicator lamp, g...Send indicator light, 9...Receive indicator light, 10...Copy indicator light. Patent applicant: Canon Co., Ltd. (indication sent to public prosecutor)

Claims (1)

[Claims] l) A test function and a transmission function and a reception function of modulating and demodulating signals used for facsimile communication can be selectively given to the modulation/demodulation circuit by operations on the operation panel. facsimile machine. h) The facsimile apparatus according to claim 1, wherein a test pattern signal can be sent out during facsimile communication by operating the operation panel to provide the test function.