![]() The shift register, which allows parallel input (data is given separately to each flip flop and in a simultaneous manner) and produces a serial output is known as Parallel-In Serial-Out shift register. Parallel-In Serial-Out Shift Register (PISO) – They are used in communication lines where demultiplexing of a data line into several parallel lines is required because the main use of the SIPO register is to convert serial data into parallel data. The above circuit is an example of shift right register, taking the serial data input from the left side of the flip flop and producing a parallel output. All these flip-flops are synchronous with each other since the same clock signal is applied to each flip flop. ![]() The output of the first flip flop is connected to the input of the next flip flop and so on. The clear (CLR) signal is connected in addition to the clock signal to all the 4 flip flops in order to RESET them. The circuit consists of four D flip-flops which are connected. The logic circuit given below shows a serial-in-parallel-out shift register. The shift register, which allows serial input (one bit after the other through a single data line) and produces a parallel output is known as Serial-In Parallel-Out shift register. Serial-In Parallel-Out shift Register (SIPO) – The main use of a SISO is to act as a delay element. The above circuit is an example of shift right register, taking the serial data input from the left side of the flip flop. The circuit consists of four D flip-flops which are connected in a serial manner. The logic circuit given below shows a serial-in serial-out shift register. ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.The experimental results prove the feasibility of the decoding method. The interlaced encoding pixels of the first group of the encoded images can be decoded through applying inverse Hadamard transform to the corresponding pixels of the second group of the encoded images. The interlaced encoding pixels of the first group of the encoded images turned into the normal Hadamard encoding pixels of the second group of the encoded images. The interlaced encoding pixels could be distinguished easily by observing the number of non-zero constants and zero elements in a column vector which is made up of the gray values of a pixel of the encoded images in sequence. ![]() Then we recorded two groups of the encoded images of the target by changing the positions of all the encoding channels on the DMD. In our experiment, we first directed a beam of laser into our HTSI to fill the field of view and labeled the positions of the interlaced encoding pixels. To improve the quality of the recovered spectral images, a positioning method and a decoding method for the interlaced encoding pixels were proposed. on Hadamard transform therefore they should be processed specially in spectrum recovery. These interlaced encoding pixels were not encoded based. An interlaced encoding phenomenon caused by the application of DMD to our HTSI was investigated and analyzed. However, it brings some new problems for us to solve synchronously. The key innovation in Hadamard transform spectral imager (HTSI) introduced recently is the use of digital micro-mirror device (DMD) to encode spectral information.
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