KR850006804A - Data synchronization device and detection method - Google Patents

Abstract

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Description

Data synchronization device and detection method

As this is a public information case, the full text was not included.

2 is a block diagram showing the present synchronization device.

* Explanation of symbols for main parts of the drawings

10: receiver 11: signal conditioner

12: bit registration circuit 13: comparator

14: memory circuit 15: word counter

16: Synchronization word position indicator 18: Synchronization output gate

21: decode circuit

Claims (17)

An apparatus for synchronizing a data message having a synchronization word transmitted several times in a message, said apparatus comprising: a) input means for receiving said transmitted synchronization word; b) means for storing the defined registration word; c) means for generating a first signal coupled to the input means, the first equalizing word being responsive to the received synchronization word in correspondence with the received synchronization word in correspondence with the stored synchronization word; d) generate a synchronization signal in response to one of the first signals, and generate a signal in response to at least two of the first signals during the next four comparisons of the next received synchronization word with the stored synchronization word; And an output means coupled to said comparing means. 2. The data synchronizing apparatus according to claim 1, wherein said transmitted synchronization words are spaced at uniform intervals during said message, so that said comparing means makes said next four comparisons at said uniform intervals. 3. The data synchronizing apparatus according to claim 2, wherein said transmitted synchronization words are spaced at defined intervals during said message, and said comparing means performs said next four comparisons at said prescribed intervals. A synchronization device for a communication system having a minimized transmitter at a first position and a receiver at a second position for receiving a digital message from the transmitter, said apparatus comprising: a) coupled to said receiver for deriving a digital message; Means; each digital message obtained with a plurality of synchronization words is generated in an array spaced at defined intervals within said message; b) means coupled to said inducing means for generating a synchronization signal in response to each synchronization word derived with a defined sequence of digital values; c) means coupled to said derivation means for counting said synchronization word arrangement, and coupled to said generating means for counting said synchronization signal, and d) following generation of a first synchronization signal in a digital message; And means coupled to said counting means for generating a number of coefficients in response to at least two synchronization signals in synchronization word arrangement. 5. The data synchronizing apparatus according to claim 4, wherein said digital message has a plurality of identical synchronizing words which occur in a predetermined value arranged in intervals spaced apart. A method of detecting a digital synchronization word consisting of a series of digital signals having a defined characteristic, said predetermined time interval being shown in a digital message, said method comprising the steps of: a) comparing said sequence of digital signals with a stored digital word and storing said memory; Generating a second detected word signal in response to a first sequence of digital signals in a message such as a digital word; b) after the first detected word signal is generated, the sequence of the digital signal is compared with the stored digital word at the prescribed number of times, and in each sequence of the digital signal in a continuous defined time as the stored digital word. In response, generating a second detected word signal; c) counting the second detected word following the first detected word signal; d) generating a synchronization signal in response to the generation of at least two detected word signals during said next four consecutive predetermined time periods. 7. The method of claim 6, wherein, if at least two word signals are not detected during the next four consecutive defined times, the sequence of the digital signals is compared with the stored digital words until the first detected word signal is generated. A data synchronization detection method, characterized in that for comparison. 7. The method of claim 6, wherein during the four consecutive defined times, if there are no at least two word signals, resetting the coefficient of the detected word signal to zero and the digital signal until the first detected word signal is generated. And comparing said sequence with the stored digital word. An apparatus for synchronizing a message having a series of bits forming a synchronization word transmitted several times during said message, said apparatus comprising: a) input means for receiving said transmitted synchronization word; b) means for storing a defined synchronization word; c) means coupled to said input means, coupled to said storage means for comparing a received series of bits with said stored synchronization word, generating an initial signal in response to an initial comparison and performing a series of A bit corresponds to the stored synchronization word, each series of bits generating a good word signal in response to each sequential comparison corresponding to the stored synchronization word, and d) synchronizing the group among the series of bits to the stored synchronization. And output means coupled to said comparing means for generating a synchronization signal in response to at least two of said good word signals during subsequent four consecutive comparisons with a word. 10. The apparatus of claim 9, wherein the comparison is performed every time a new bit is received. 10. A data synchronization device as claimed in claim 9, wherein each successive comparison is made in response to a synchronization word position indication. 11. The apparatus of claim 10, wherein each successive comparison is made in response to a synchronization word position indication. 10. The apparatus of claim 9, comprising means for reinitiating the initial comparison following the next four comparisons of the group. The apparatus of claim 10, comprising means for resuming the initial comparison following the next four comparisons of the group. 12. The data synchronization device of claim 11, comprising means for resuming the initial comparison following the next four comparisons of the group. 13. The apparatus of claim 12, comprising means for resuming the initial comparison following the next four comparisons of the group. A digital synchronization word detection method comprising a series of digital signals having a predetermined characteristic appearing at a time interval defined in a digital message, the method comprising: 1) storing the sequence of digital signals each time a new signal is generated in the sequence; Initially comparing the digital word, and generating an initial signal in response to a first sequence of digital signals in a message such as the stored digital word; 2) comparing said sequence of digital signals with said stored digital words at said prescribed time on the basis of a time position following generation of said initial signal, and each of said digital signals at said prescribed time equal to said stored digital word; Generating a second signal in response to the sequence; 3) counting the second signal after the initial signal; 4) generating a synchronization signal in response to at least two occurrences of said second signal during said next four consecutive defined times; 5) starting said initial comparison after said four defined times. ※ Note: The disclosure is based on the initial application.