More recently, so-called odd parity rotating magnetic fields have been used to preserve the closed topology of the FRC.
12.
The lower 15 bits of each memory word held AGC instructions or data, with each word being protected by a 16th odd parity bit.
13.
Odd parity is more useful than even, since it ensures that at least one state transition occurs in each character, which makes it more reliable.
14.
It is possible to consider these in isolation and when that is done an even combined quarter turn parity will involve a number of odd parity elements.
15.
As with the other warning field, most of the assigned 6-bit codes have odd parity, providing a Hamming distance of 2 from each other.
16.
The first digit from the left group is always encoded with odd parity, and the last digit of the right group is always encoded with even parity.
17.
Practically each word could be considered as a 20-bit word : 3 bit for sync, 16 bit for payload and 1 bit for odd parity control.
18.
Eleven of these are encoded as 5-bit codes with odd parity, providing single-bit error detection ( a minimum Hamming distance of 2 between any two valid codes ).
19.
For cubes of even size if the scrambling permutation relative to the previous set state is odd, then any permutation to solve the cube must also have odd parity and vice versa.
20.
When the total number of transmitted bits, including the parity bit, is even, odd parity has the advantage that the all-zeros and all-ones patterns are both detected as errors.
