The AN6262N and the AN6263N are the pause detection integrated circuits which select the program on the cassette tape. In the ordinal method, tape speed is different depending on the PLAY and FF/REW, and also nonsignal time between the programs is different. Therefore, two time constant circuit has been applied in order to detect each time. The AN6262N and the AN6263N are proud of detecting the program by making the time corresponding to each non signal time logically in the one time constant circuit. Furthermore, signal can be detected in this time constant circuit and beginning of the program is recognized when sound signal pulse increase more than specified numbers.