JPS6386626A - Envelope transmission system - Google Patents

Abstract

PURPOSE:To improve the transmission efficiency while maintaining the matching with a conventional equipment by transmitting a status information by means of the violation conversion of frame bits, and transmitting a subchannel information with conventional status bit. CONSTITUTION:On the transmission side, in an envelope forming circuit 2, a data IN1 inputted through the main channel is made into data bits, the information IN2 inputted through the subchannel is made into status bits, and an envelope signal is assembled with these bits and the frame bits generated in a frame pattern generating circuit 1. In the meantime, in accordance with the status of the status information input IN3, a violation control circuit 3 outputs a control information for the violation conversion of the frame bits. In a unipolar/bipolar conversion circuit 4, the unipolar signal of envelope constitution is converted to a bipolar signal, and at the same time the violation conversion is executed under the control signal, and the result is outputted as a transmission output OUT4.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention makes it possible to transmit state information and also transmit subchannel information by bipolar violation of the envelope signal during baseband envelope transmission. This paper relates to an envelope transmission method.

[Conventional technology]

Conventionally, baseband envelope transmission has been performed using an envelope configuration consisting of frame bits, main channel data focus, and status bits for transmitting status information.

[Problem that the invention seeks to solve]

In the conventional envelope transmission method described above, the status information corresponding to the status bit has the property of maintaining the same status for a very long time, whether it is in a data communication status or not, and therefore the information speed is low. However, since the transmission rate is determined by envelope transmission, it is generally unnecessarily high (and there is a disadvantage that data transmission efficiency is low due to status bit transmission. Also, the information rate of sub-channel information is Although the speed is lower than that of the main channel data, the transmission speed must be increased for this purpose, which has disadvantages such as limited transmission distance and lack of compatibility with conventional devices.

An object of the present invention is to provide an envelope transmission method that solves these problems.

[Means for solving problems]

The envelope transmission method of the present invention includes, on the transmitting side, a frame pattern generation circuit, an envelope assembly circuit that inputs the output of the frame pattern generation circuit, main channel data, and subchannel information to assemble an envelope signal, and status information. a violation control circuit that inputs and controls biorage conversion of the envelope signal;
a unipolar/bipolar conversion circuit that converts an envelope-configured unipolar signal into a bipolar signal and at the same time performs violation conversion based on control by the violation control circuit; a bipolar/unipolar conversion circuit for converting into and a violation detection circuit that detects and outputs status information.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, and FIG. 2 shows an example of an envelope signal according to this embodiment.

In FIG. 1, the transmitting side includes a frame pattern generation circuit 1, an envelope assembly circuit 2, a violation control circuit 3, and a unipolar-bipolar conversion circuit 4, and the receiving side includes a bipolar-unipolar conversion circuit 5 and a frame synchronization circuit. It includes a circuit 6, an envelope decomposition circuit 7, and a violation detection circuit 8.

In the transmitting circuit, INI is the data input of the main channel, IN2 is the information input of the secondary channel, IN3 is the status information input, and 0UT4 is the transmission output.In the receiving circuit,
IN4 is the receiving power, 0UT1 is the data output of the main channel, 0UT2 is the information output of the subchannel, and 0UT3 is the status information output.

Next, the operation of this embodiment will be explained. The envelope signal according to this embodiment consists of frame bit 9, data bit 10, and status bit 11, as shown in FIG.

The presence/absence of a frame bit violation is defined in correspondence to ON/OFF of state M and jfJ information.

On the transmitting side, an envelope assembly circuit 2 assembles an envelope signal using the data input INI of the main channel as a data bit, the information input IN2 of the subchannel as a status bit, and the frame bits generated by the frame pattern generation circuit 1. - On the other hand, the violation control jB circuit 3 outputs control information for violation conversion of frame bits according to the state of the state information input IN3. The unipolar/bipolar conversion circuit 4 converts the envelope-configured unipolar signal into a bipolar signal, and at the same time performs violation conversion based on the control information and outputs it as a transmission output 0UT4.

On the receiving side, the input bipolar signal at the receiving input IN4 is converted into a unipolar signal by a bipolar/unipolar conversion circuit 5. From this output, a frame synchronization circuit 6 synchronizes with the frame pattern of the envelope signal, and an envelope decomposition circuit 7 decomposes the envelope signal and converts the data bit into the data output 0UTI of the main channel and obtains the information of the sub channel from the status bit. Output as 0UT2. Furthermore, the violation detection circuit 8 reproduces state information in accordance with the presence or absence of a violation of the frame bits and outputs it as a state information output 0UT3.

〔Effect of the invention〕

As explained above, according to the present invention, status information is transmitted by violation conversion of frame bits, and subchannel information is transmitted using conventional status bits, thereby achieving compatibility with conventional devices. However, it has the effect of increasing transmission efficiency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a timing diagram showing an example of an envelope signal according to the embodiment of FIG. 1... Frame pattern generation circuit 2... Envelope m-vertical I circuit 3... Violation control circuit 4... Unipolar/bipolar conversion circuit 5...
Bipolar/unipolar conversion circuit 6... Frame synchronization circuit 7... Envelope decomposition circuit 8... Violation detection circuit 9... Frame bit 10... Data bit 11... Status bit

Claims (1)

[Claims] (1) On the transmitting side, there is a frame pattern generation circuit, an envelope assembly circuit that inputs the output of this frame pattern generation circuit, main channel data, and sub-channel information to assemble an envelope signal, and an envelope assembly circuit that inputs status information and assembles an envelope signal. and a unipolar-bipolar conversion circuit that converts an envelope-configured unipolar signal into a bipolar signal and simultaneously performs violation conversion based on control by the violation control circuit. , on the receiving side, a bipolar-unipolar conversion circuit that converts an envelope-configured bipolar signal into a unipolar signal, a frame synchronization circuit that synchronizes using the frame pattern of the envelope signal, and a frame synchronization circuit that decomposes the envelope signal and converts it into main channel data and sub-channel data. An envelope transmission method that includes an envelope decomposition circuit that outputs channel information and a violation detection circuit that detects violations and outputs status information.