Circuit arrangement for removing stuff bits
First Claim
1. Circuit arrangement for removing stuff bits from a frame-structured signal, which is available as sequences of n bits supplied in parallel, comprisinga) a memory circuit (2) for storing the n bits supplied in parallel,b) a controllable selection circuit (3) having n outputs and coupled to the output of the memory circuit (2) , andc) a control circuit (9) having a control signal for determining a switching state of the selection circuit (3), the switching state determining which of the bits stored in the memory circuit (2) are applied to the n outputs of the selection circuit, characterized in thatd) the memory circuit comprises n delay elements for delaying each of the n bits supplied in parallel for a duration of one bit,e) at predetermined intervals, the control circuit blocks acceptance of new bits in up to p-1 delay elements out of the n delay elements, where p represents a maximum number of stuff bits that can occur simultaneously among the n bits supplied in parallel, and p≦
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3 Assignments
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Accused Products
Abstract
The described circuit arrangement for removing stuff bits from a frame-structured signal which is available in n parallel bits, comprises a memory circuit (2) which is supplied with the parallel bits (1b). The memory circuit (2) is followed by a controllable selection circuit (3) having n outputs (3a). A control circuit (9) produces control signals (9b, 9c), which determine which bits stored in the memory circuit are transported to the n outputs (3a) of the selection circuit (3). The memory circuit (2) comprises only n delay elements by which each of the n parallel bits (1b) is delayed for the duration of one bit. So as to provide that n delay elements will be sufficient, the control circuit (9) is to block at predetermined time intervals the acceptance of new bits in one or a plurality of delay elements.
14 Citations
2 Claims
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1. Circuit arrangement for removing stuff bits from a frame-structured signal, which is available as sequences of n bits supplied in parallel, comprising
a) a memory circuit (2) for storing the n bits supplied in parallel, b) a controllable selection circuit (3) having n outputs and coupled to the output of the memory circuit (2) , and c) a control circuit (9) having a control signal for determining a switching state of the selection circuit (3), the switching state determining which of the bits stored in the memory circuit (2) are applied to the n outputs of the selection circuit, characterized in that d) the memory circuit comprises n delay elements for delaying each of the n bits supplied in parallel for a duration of one bit, e) at predetermined intervals, the control circuit blocks acceptance of new bits in up to p-1 delay elements out of the n delay elements, where p represents a maximum number of stuff bits that can occur simultaneously among the n bits supplied in parallel, and p≦
Specification