A light emitting module and method for shaping a beam via a beam shaping window and an optical pickup apparatus employing the same. A third chamber is formed between end walls of the cylinders and communicates with said second chamber via at least one opening formed in the jacket wall of the first cylinder. The film is oriented to impart exceptional tear and burst strength characteristics to the resultant waterproof product. Included are methods and apparatus for digital thermal throttle control in an integrated circuit. Three entries of the MCS table are reserved for implicit modulation order signaling or implicit redundancy version signaling. The method comprises the steps of derotating the signal whereby the frequency band of the derotated signal overlaps zero frequency; and splitting the derotated signal into two parts, a first signal part consisting substantially of positive frequency signal components and a second signal part consisting substantially of negative frequency signal components.