JP4239686B2 - Electronic device package with display function and transmission device equipped with the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device package with a display function and a transmission apparatus equipped with the same.
[0002]
[Prior art]
For example, an electronic device package such as an optical transceiver that can be inserted / removed from / from a transmission apparatus does not have a display function for a communication state or permission / non-permission of removal. Some devices have built-in LEDs such as RJ-45 electrical connectors (Ethernet “registered trademark” connectors), but the LED lead wires are just outside the optical transceiver. The LED is driven by a driver outside the optical transceiver (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 05-307984
[Problems to be solved by the invention]
In the above-described prior art, since there is no display function such as communication status, whether or not the optical connector can be inserted / removed, and whether or not the optical transceiver can be removed from the transmission apparatus, the display function is prepared on the transmission apparatus side. There was a need. In addition, since most optical transceivers are standardized (standardized) with respect to the number of pins and pin arrangement of the electrical interface, it is not possible to increase the number of connector pins or to arbitrarily change the size of the housing.
[0005]
For this reason, it is conceivable to arrange the display functions in a location apart from each optical transceiver in the transmission apparatus, or to arrange the display functions in the vicinity of each optical transceiver in the transmission apparatus. There is a problem in that the space for arranging the members having to be secured must be ensured, resulting in an increase in the size of the entire transmission device and a reduction in mounting density. In addition, when they are collectively arranged at other locations, the locations are separated, so that it is difficult to immediately grasp the communication state of a specific port.
[0006]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electronic device package with a display function that solves the above-described problems and prevents erroneous extraction from a transmission device by displaying a communication state, and a transmission device equipped with the same. .
[0007]
[Means for Solving the Problems]
To achieve the above object, the invention of claim 1, I Oh in electronics package mounted to the transmission device, a light emitting element of the display by entering a freely rewritten from the transmission device, from the transmission device A memory having a specific address area in which data corresponding to the communication state is written, and the light emitting element is controlled to a display state for displaying the communication state in accordance with the data written in the specific address area of the memory. And an electronic device package with a display function.
[0008]
In addition to the configuration described in claim 1, the invention of claim 2 may include a receptacle capable of inserting or removing an electrical or optical connector at one end of the electronic device package with a display function.
[0009]
According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the electronic device package with a display function includes an electrical interface connector and a lock mechanism, which can be freely attached to and removed from the transmission device. A pluggable type may also be used.
[0010]
According to a fourth aspect of the invention, in addition to the configuration of the third aspect, the electronic device package with a display function has at least one printed wiring board, and a part of the end portion forms an electrical interface connector. It may be.
[0011]
According to a fifth aspect of the present invention, in addition to the structure according to any one of the first to fourth aspects, the light emitting element is mounted on a printed wiring board and has a light guide path that transmits display light of the light emitting element to the outside of the package. Good.
[0012]
According to a sixth aspect of the present invention, in addition to the configuration according to any one of the first to fifth aspects, the memory may be rewritable from the transmission device by a two-wire serial interface.
[0016]
The invention of claim 7, the display function-equipped electronic apparatus package according to any one of claims 1 to 6 is inserted and removed capable mounted one or more light emission realm of a specific address of each display function electronics package It is a transmission device equipped with an electronic device package with a display function having a control means for writing data for turning on and off the element.
[0027]
According to the present invention, a display light-emitting element such as an LED and a memory rewritable from the transmission device are provided in the housing, and the light-emitting element can be controlled on and off from the transmission device side according to a specific address state of the memory. As a result, it is easy to check the communication state, and it is easy to determine whether the optical connector can be inserted / removed and whether the optical transceiver itself can be inserted / removed from the transmission device. When an electronic device package with a display function is to be removed from the device, permission / non-permission of removal can be grasped visually by observing the blinking state of the light emitting element, and erroneous insertion / removal can be prevented.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0029]
FIG. 1A is an external perspective view showing an embodiment of an electronic device package with a display function according to the present invention, and FIG. 1B transmits the electronic device package with a display function shown in FIG. It is the 1B-1B sectional view taken on the line when it equips with an apparatus. FIG. 2 is a block diagram of the electronic device package with a display function shown in FIG.
[0030]
In the present embodiment, the case where the electronic device package with a display function is an optical transceiver with a display function will be described.
[0031]
An optical transceiver with a display function (hereinafter referred to as “optical transceiver”) 100 shown in FIGS. 1A and 1B is an electronic device package that is detachably mounted on a transmission device 115, and includes an LED 107 in a housing 104. And a memory 109 that can be rewritten from the transmission device 115, and enables on / off control of the LED 107 from the transmission device 115 side according to data of a specific address in the memory 109.
[0032]
An optical receptacle 103 is provided at one end (the left end in the figure) of the housing 104. The optical receptacle 103 has openings 101 and 102 having a convex cross-sectional shape for inserting / removing an optical connector for transmission and an optical connector for reception (not shown). A display window 114 is provided in the vicinity of the openings 101 and 102 of the optical receptacle 103.
[0033]
As shown in FIG. 1B, the optical transceiver 100 is mounted between a cage (insertion guide slot of the optical transceiver 100) 110 provided on the device front panel 105 of the transmission device 115 and the device motherboard 111. The optical receptacle 103 of the optical transceiver 100 is provided with an optical subassembly 116 incorporating a photodiode (not shown) and an optical subassembly incorporating a laser diode (not shown). These photodiodes and laser diodes are connected to one end (the left end in the figure) of the printed wiring board 118 arranged in the housing 104 by a lead wire 117. On one main surface (in this case, the upper surface) of the printed wiring board 118, an LED 107, a control circuit 108, and a memory 109 are arranged. The LED 107 is arranged such that its light emitting surface is in the same direction (in this case, upward) as one main surface of the printed wiring board 118. A light guide (for example, a plastic optical fiber) 106 is disposed from the light emitting surface of the LED 107 to the window 114 of the optical receptacle 103. An electrical interface connector 112 (not shown) is formed at the other end of the printed wiring board 118, and this electrical interface connector 112 is disposed at the end of the optical transceiver 100 in the cage 110 (in this case, the right end). The electrical interface connector 113 is connected. Since the housing 104 is provided with the electrical interface connector 113 and a lock mechanism (not shown), the optical transceiver 100 is a pluggable type that can be inserted into and removed from the transmission device 115.
[0034]
Such an optical transceiver 100 is detachably mounted in a cage 110 arranged vertically and horizontally toward the device front panel 105 of the transmission device 115.
[0035]
In addition, the transmission apparatus 115 includes control means (not shown) for writing data at a specific address in the memory 109 of each optical transceiver 100 so that each optical transceiver 100 controls the on / off of the LED 107.
[0036]
As shown in FIG. 2, the optical transceiver 100 displays a communication state such as a link state constituted by a plurality of optical transceivers 100 mainly by blinking and permission / non-permission of insertion / removal of the electrical interface connector 112 or an optical connector (not shown). Read out the data written to the writable area of the memory 109, the memory 109 having the LED 107 to be rewritten, the data area where rewriting is prohibited, and the data area where rewriting is free (data area of a specific address) The control circuit 108 is a sequencer for controlling on / off of the LED 107 in accordance with the contents of data. The optical transceiver 100 has a two-wire serial interface (not shown), and this two-wire interface is connected to the transmission device 115 by a clock signal line 203 and a data signal line 204. The clock signal line 203 and the data signal line 204 share some of the pins of the standardized electrical interface connector of the optical transceiver 100.
[0037]
Note that FIG. 2 shows only the portion related to the display function and includes elements, circuits, signal lines and the like for performing normal transmission, although not actually shown.
[0038]
As the memory 109, for example, a nonvolatile memory such as an EEPROM is used. The data area in which rewriting of the memory 109 is prohibited includes, for example, a sequence program area in which a sequence program is written, and module identity data (what kind of optical transceiver the optical transceiver 100 in which the memory 109 is mounted) is. For example, the module identity data area in which the manufacturer name, factory name, transmission distance, transmission capacity, signal light wavelength, serial number, and manufacturing date) are written, and the data area that can be rewritten is optical It has a flag area for storing that some data has been written in the memory 109 of the transceiver 100, and an area (data area of a specific address) where the transmission device 115 (see FIG. 1) reads and writes data. The module identity data is written in advance at the factory when the optical fiber transceiver 100 is manufactured.
[0039]
The LED 107 preferably has an illuminance at which an optical connector (not shown) can be easily inserted and removed from the optical transceiver 100 or the optical receptacle 103 even if the illuminance of the room where the transmission device 115 is disposed is low. Further, the number of LEDs 107 is one in the present embodiment, but the present invention is not limited to this and may be plural.
[0040]
The control circuit 108 exchanges data between the optical transceiver 100 and the transmission device 115 (see FIG. 1B). Also, for example, by writing data from the transmission device 115 to an empty area of the memory 109 (the above-mentioned write-free area), the flag area data used as a flag for a part of the empty area of the memory 109 is set to “1”. The LED 107 emits light. When the data in the flag area is rewritten from “1” to “0” from the transmission device 115, the control circuit 108 turns off the light emission of the LED 107. However, it goes without saying that data writing to the memory 109 of the optical transceiver 100 is performed with the optical transceiver 100 inserted into the transmission device 115.
[0041]
As described above, the optical transceiver 100 can control the blinking of the LED 107 using the empty area of the memory 109. This is only to change the software on the transmission device 115 side without changing the number of pins of the electrical connector 112.
[0042]
Here, the change of the software on the transmission apparatus 115 side means that the communication state of the optical transceiver 100 depends on the data necessary for the empty area of the memory 109 of the optical transceiver 100, for example, the communication state of the apparatus (link OK / NG etc.). This is a change for writing flag data indicating permission / non-permission of extraction from the transmission device 115.
[0043]
If the write area of the memory 109 is to be increased, it can be realized by connecting other memories 200 in parallel using a daisy chain. For this parallel connection, for example, an interface called I ² C may be used. This I ² C can read and write data by connecting two lines, that is, a clock signal line 201 and a data signal line 202 to a clock signal line 203 and a data signal line 204, respectively. It is.
[0044]
As described above, according to the present embodiment, it is possible to grasp at a glance what communication state the optical transceiver 100 inserted into the transmission apparatus 115 is in. Alternatively, whether the optical transceiver 100 is disconnected or whether the optical connector 100 is connected or disconnected from the optical transceiver 100 is indicated by blinking of the LED 107 depending on the communication state of the optical transceiver 100 and the communication state (link OK / NG, etc.) from the transmission device 115. As a result, it is possible to prevent an operator from accidentally pulling out the optical transceiver 100 from the transmission device 115 or removing and inserting the optical connector from the optical transceiver 100. Further, if the number of LEDs is increased, both of the above functions can be provided, or more functions can be realized.
[0045]
In this embodiment, the electronic device package with a display function is described as an optical transceiver. However, the present invention is not limited to this, and has an optical connector and an electrical connector and is detachably mounted on other devices. Any device that can do this is applicable (eg, an optical transmitter or receiver, or even an electrical transceiver). In this embodiment, the case where the package with a display function is detachably mounted on the transmission device 115 has been described. However, the present invention is not limited to this, and the package with a display function is the device of the transmission device 115. It may be an optical transceiver that is mounted on the mother board 111 by soldering.
[0046]
【The invention's effect】
In short, according to the present invention, an electronic device package with a display function for displaying a communication state (link OK / NG, etc.) in an easy-to-see manner and preventing accidental extraction from the transmission device, and a transmission device equipped with the same are provided. Can be realized.
[Brief description of the drawings]
FIG. 1A is an external perspective view showing an embodiment of an electronic device package with a display function according to the present invention, and FIG. 1B is an electronic device package with a display function shown in FIG. It is a 1B-1B line sectional view when wearing.
FIG. 2 is a block diagram of the electronic device package with a display function shown in FIG.
[Explanation of symbols]
100 Optical transceiver (electronic device package with display function)
DESCRIPTION OF SYMBOLS 101,102 Opening part 103 Optical receptacle 104 Case 105 Apparatus front panel 106 Light guide path 107 LED (Light emitting element for a display)
108 control circuit 109 memory 110 cage (insertion guide slot of optical transceiver 100)
111 Device Motherboard 112, 113 Electrical Interface Connector 114 Display Window 115 Transmission Device 116 Optical Subassembly 117 Lead Wire 118 Printed Wiring Board

Claims (7)

I Oh in the electronics package to be mounted on the transmission apparatus,
And a light-emitting element of the display by entering,
A memory that is rewritable from the transmission device and has a specific address area in which data corresponding to a communication state is written from the transmission device ;
A control circuit for controlling the light emitting element to a display state for displaying the communication state in accordance with data written in the area of the specific address of the memory ;
Display function electronics package, characterized in that it comprises a. 2. The electronic device package with a display function according to claim 1, further comprising a receptacle capable of inserting and removing an electrical or optical connector at one end of the electronic device package with a display function. The display function electronics package is provided with an electrical interface connector and locking mechanism, these by attachment to the transmission device, removal of Claim 1 or 2, characterized in that the pluggable type that allows freely Electronic device package with display function. 4. The display function according to claim 3, wherein the electronic device package with a display function includes at least one printed wiring board, and a part of an end thereof forms the electrical interface connector. With electronics package.   5. The electronic device package with a display function according to claim 1, wherein the light emitting element is mounted on a printed wiring board and has a light guide path that transmits display light of the light emitting element to the outside of the package. 6. The electronic device package with a display function according to claim 1, wherein the memory is rewritable from the transmission device with a two-wire serial interface. Display function-equipped electronic apparatus package according to any one of claims 1 to 6 is inserted and removed capable mounted one or more, for turning on and off the light emitting element to the realm of the specific address of each display function electronics package A transmission apparatus equipped with an electronic device package with a display function, characterized by comprising control means for writing the data.

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