JPH0759158A - Data transmission/reception system - Google Patents

Abstract

PURPOSE:To obtain a data transmission/reception system improved in reliability by which transmission/reception of data is surely executed. CONSTITUTION:A data transmitter-receiver transferring data between a 1st terminal equipment 1 and a 2nd terminal equipment 2 is provided with a liquid crystal display device 3 provided in the 2nd terminal equipment 2 and turning on/off a predetermined picture element depending on data to be sent, light emitting elements 15, 17 provided in the 1st terminal equipment 1 and emitting the light to a predetermined picture element position, a light receiving element 16 receiving a light reflected in the picture element position, and a decoding means of data sent from the 2nd terminal equipment 2 based on an output of the light receiving element 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transmission / reception system capable of transferring data between a portable telephone and an individual calling device (hereinafter referred to as a pager) which can be mounted on the portable telephone, for example, between these devices. It is a thing.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view showing a conventional data transmission / reception system for transmitting / receiving data between a portable telephone and a pager mounted on the portable telephone. In the figure, 1 is a mobile phone, 2 is a pager mounted on the mobile phone 1, 3 is a liquid crystal display unit of the pager 2, and 4 is a number displayed on the liquid crystal display unit 3. Reference numeral 5 is a switch for detecting whether or not the pager 2 is attached to the mobile phone 1, 6 is a connector provided on the mobile phone 1, and when the pager 2 is attached to the mobile phone 1, The pin 6a of the connector 6 is inserted into the connector pin insertion terminal formed on the side surface of the second terminal 2, and data is transferred between the mobile phone 1 and the pager 2.

[0003]

In the conventional data transmission / reception system, a switch or a connector mechanically connected detects whether the pager 2 is attached to the portable telephone 1 or transfers data. Therefore, there is a problem in that the connector pins may become dirty, resulting in poor electrical contact or damage to the connector pins or switches.

The present invention has been made to solve the above problems, and an object thereof is to obtain a data transmission / reception system capable of improving reliability and reliably transmitting / receiving data.

[0005]

A data transmission / reception system according to the present invention is a data transmission / reception system for transferring data between a first terminal device and a second terminal device, and is provided in the second terminal device. A liquid crystal display for turning on / off a predetermined pixel according to the transmitted data, and a light emitting element provided in the first terminal device for irradiating light to the predetermined pixel position,
It is characterized by comprising a light receiving element for receiving the light reflected at the pixel position, and a data restoring means for restoring the data transmitted by the second terminal device based on the output of the light receiving element. .

[0006]

According to the data transmission / reception system of the present invention, the predetermined pixels of the liquid crystal display provided in the second terminal device are turned on / off in accordance with the data to be transmitted, and the light emission provided in the first terminal device is performed. Data is transmitted and received between the first terminal device and the second terminal device by detecting ON / OFF of the pixel based on a change in reflected light amount when light is emitted from an element to the predetermined pixel position. Therefore, the data transfer between the first terminal device and the second terminal device is performed in a contactless manner, and highly reliable data transfer can be performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a mobile phone and a pager in which the data transmission / reception system of this embodiment is used.
In FIG. 6, parts that are the same as or equivalent to those in FIG. In the figure, 11 is a display device of the mobile phone 1 (first terminal device), 12 is an operation button such as a numeric keypad, 13 is an insertion portion for mounting the pager 2 (second terminal device), and 14 is a mobile phone. It is a pager-side light receiving element for receiving data transmitted as a light blinking pattern from the model telephone 1 to the pager 2.

FIG. 2 is an explanatory view when the pager is mounted on the portable telephone, and FIG. 5 is an explanatory view showing a light path between the light emitting element and the light receiving element when the pager is mounted. . The same or corresponding parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In the figure, 15 is a liquid crystal display unit 3.
The first light emitting element for irradiating light to the position of the predetermined segment 4a of the numeral 4 displayed on
A light receiving element for receiving the light reflected and returned at the position a, 1
Reference numeral 7 is a second light emitting element provided in the mobile phone 1 for transmitting predetermined pattern data to the pager 2 via the pager side light receiving element 14, and 18 is a data transmitted based on the output of the light receiving element 16. It is a data restoration unit (data restoration means) that performs restoration.

FIG. 3 is a timing chart for explaining the data restoration performed by the data restoration unit 18, and FIG. 3A shows whether the predetermined segment 4a of the liquid crystal display unit 3 of the pager 2 is turned on or off. A waveform is shown, and the same figure (b) has shown the light emission pattern of the light emitting element 15 for detecting ON / OFF of the said segment 4a, and the light emitting element 15 is blinking by a fixed period. FIG. 11C shows the detection signal output from the light receiving element 16 according to the ON / OFF of the segment 4a.

Next, the operation will be described with reference to the flowchart shown in FIG. FIG. 4 is a flowchart showing a data receiving operation when the mobile phone 1 receives data sent from the pager 2. Mobile phone 1
The first light-emitting element 15 and the second light-emitting element 17 are controlled so as to always operate when the mobile phone 1 is in operation, and the first light-emitting element 15 blinks at a constant cycle. The second light emitting element 17 blinks in a predetermined pattern for setting the pager 2 in the data transfer mode (step S0).

Next, in step S1, it is determined whether or not the pager 2 is attached to the mobile phone 1 (step S1). This determination has a layout relationship as shown in FIGS. 2 and 5 when the pager 2 is mounted on the mobile phone 1. Therefore, the pager-side light receiving element 14 of the pager 2 and the second light emitting element of the mobile phone 1 are arranged. 17 will face each other.
As a result, the pager-side light receiving element 14 receives a predetermined blinking pattern for setting the pager 2 output from the second light emitting element 17 of the mobile phone 1 to the data transfer mode, and the pager 2 is portable. You will know that it has been attached to the telephone 1. That is, the pager-side light receiving element 14
The second light emitting element on the side of the mobile phone 1 constitutes a detecting means for detecting whether or not the pager 2 is correctly mounted at a predetermined mounting position of the phone 1. This is because sufficient accuracy can be obtained if the size of the light receiving element 14 (or the size of the opening window for receiving light) is made sufficiently small.

Further, in the pager 2, the operation mode is set to the data transfer mode by the pager side light receiving element 14 receiving a predetermined blinking pattern for setting the data transfer mode (step S2). That is, the pager 2 turns on / off the predetermined segment 4a of the liquid crystal display 3 with a signal corresponding to incoming data stored in a memory (not shown). In the mobile phone 1, the ON / OFF of the segment 4a is detected and read by the light receiving element 4, and the data is stored in the memory (step S3). In this case, reading of the data sent from the pager 2 is sequentially performed by the method shown in the timing chart of FIG. That is, at every light emission timing shown in FIG. 3B, as shown in FIG.
It is output as a data string of level or'L 'level. For example, when reflected by the segment 4a of the liquid crystal display, the level becomes "H", and when not reflected, the level becomes "L". This data is sequentially stored in the memory one by one.

Then, the data is read, and it is determined whether the pager 2 has been removed before reading the next data (step S4). That is, if the light-receiving element 14 does not include the predetermined blinking pattern, it is determined that the pager is removed, and the process returns to step S1.

As described above, according to the present embodiment, the incoming data received by the pager 2 is contactlessly turned on / off by turning on / off a predetermined segment of the liquid crystal display provided in the pager 2. Therefore, the reliability in data transfer is improved as compared with the case where the pager 2 and the mobile phone 1 are connected using a switch or a connector to transfer data.

Further, in the embodiment described above, the pager 2
The data transfer between the mobile phone 1 and
The data transfer is not limited to the pager and the mobile phone, for example, data transfer between a portable calculator provided with a liquid crystal display device and a data processing device to which the calculator can be attached, and a portable type device provided with a liquid crystal display device. It may be used for data transfer between the measuring device and the data processing device to which the measuring device can be attached.

Further, in the embodiment described above, data is transferred from the pager 2 to the portable telephone 1 by turning on / off the predetermined segment 4a of the liquid crystal display 3 of the pager 2. It goes without saying that this segment does not have to be one and may be plural. Furthermore, the liquid crystal display device 3 is a two-dimensionally arranged display system, and data may be transferred using at least one predetermined dot therein.

[0017]

As described above, according to the present invention, data can be transferred in a contactless manner by turning on / off a predetermined pixel of the liquid crystal display, so that reliability in data transfer is improved. There is an effect that can be made. Further, since the conventional connector is not necessary, the first terminal device (mobile phone) can be more easily downsized and the weight can be reduced. Since the existing liquid crystal display unit is used instead of providing another member to omit the connector, the structure on the second terminal device (pager) side can be further simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mobile phone and a pager using a data transmission / reception method according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a positional relationship between a light emitting element and a light receiving element on the telephone side and a liquid crystal display section and a light receiving element on the pager side when the pager is attached to a portable telephone in a data transmission / reception system according to an embodiment of the present invention. It is a figure.

FIG. 3 is a timing chart for explaining identification of data sent from a pager to a mobile phone in a data transmission / reception method according to an embodiment of the present invention.

FIG. 4 is a flowchart showing a data receiving operation when a mobile phone receives data sent from a pager in a data transmitting / receiving system according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram of a light path between a light emitting element and a light receiving element when the pager of the present invention is mounted.

FIG. 6 is a perspective view showing a conventional data transmission / reception type portable telephone and a pager.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Portable telephone (1st terminal device) 2 Pager (2nd terminal device) 3 Liquid crystal display 4a segment 14 Pager side light receiving element 15 1st light emitting element 16 Portable telephone side light receiving element 17 2nd light emitting element 18 segment detector (segment detector)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04B 10/22 9372-5K H04B 9/00 R

Claims (1)

[Claims] 1. A data transmission / reception system for transferring data between a first terminal device and a second terminal device, comprising:
Liquid crystal display provided in the terminal device for turning on / off a predetermined pixel according to data to be transmitted, a light emitting element provided in the first terminal device for irradiating light to the predetermined pixel position, and the pixel A light receiving element for receiving the light reflected at the position,
A data transmission / reception system, comprising: a data restoration means for restoring the data sent from the second terminal device based on the output of the light receiving element.